Patent application number | Description | Published |
20100320962 | INFORMATION PROCESSING APPARATUS, PROGRAM, AND INFORMATION PROCESSING SYSTEM - An information processing apparatus includes an antenna having a variable Q value, the antenna being used for performing communication with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging a battery in a noncontact manner by using the carrier, an obtaining unit configured to obtain information about charging of the battery, a determining unit configured to determine whether charging of the battery is to be performed or not on the basis of the information obtained by the obtaining unit, and a setting unit configured to selectively set the Q value of the antenna to a first value or a second value in accordance with a determination result generated by the determining unit, the second value being larger than the first value. | 12-23-2010 |
20130043837 | INFORMATION PROCESSING APPARATUS, PROGRAM, AND INFORMATION PROCESSING SYSTEM - An information processing apparatus includes an antenna having a variable Q value, the antenna being used for performing communication with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging a battery in a noncontact manner by using the carrier, an obtaining unit configured to obtain information about charging of the battery, a determining unit configured to determine whether charging of the battery is to be performed or not on the basis of the information obtained by the obtaining unit, and a setting unit configured to selectively set the Q value of the antenna to a first value or a second value in accordance with a determination result generated by the determining unit, the second value being larger than the first value. | 02-21-2013 |
20140247008 | INFORMATION PROCESSING APPARATUS, PROGRAM, AND INFORMATION PROCESSING SYSTEM - An information processing apparatus is provided. The information processing apparatus includes a communication circuitry with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging an external battery in a noncontact manner; and a control circuitry configured to control a characteristic of at least one of communication and charging. | 09-04-2014 |
Patent application number | Description | Published |
20090147571 | SELF-BOOSTING SYSTEM WITH SUPPRESSION OF HIGH LATERAL ELECTRIC FIELDS - In an improved EASB programming scheme for a flash device (e.g. a NAND flash device), the number of word lines separating a selected word line (to which a program voltage is applied) and an isolation word line (to which an isolation voltage is applied) is adjusted as a function (e.g. inverse function) of distance of the selected word line from the drain side select gate to reduce program disturb due to high vertical and lateral electric fields at or near the isolation transistor when programming word lines closer to the drain side select gate. The selected and isolation word lines are preferably separated by two or more word lines to which intermediate voltage(s) are applied. | 06-11-2009 |
20110242899 | EXTRA DUMMY ERASE PULSES AFTER SHALLOW ERASE-VERIFY TO AVOID SENSING DEEP ERASED THRESHOLD VOLTAGE - An erase operation for non-volatile memory includes first and second phases. The first phase applies a series of voltage pulses to a substrate, where each erase pulse is followed by a verify operation. The verify operation uses a verify level which is offset higher from a final desired threshold voltage level. The erase pulses step up in amplitude until a maximum level is reached, at which point additional erase pulses at the maximum level are applied. The first phase ends when the verify operation passes. The second phase applies one or more extra erase pulses which are higher in amplitude than the last erase pulse in the first phase and which are not followed by a verify operation. This avoids the need to perform a verify operation at deep, negative threshold voltages levels, which can cause charge trapping which reduces write-erase endurance, while still achieving the desired deep erase. | 10-06-2011 |
20120243323 | Nonvolatile Memory and Method for Improved Programming With Reduced Verify - A group of memory cells of a nonvolatile memory is programmed in parallel in a programming pass with a minimum of verify steps from an erased state to respective target states by a staircase waveform. The memory states are demarcated by a set of increasing demarcation threshold values (V | 09-27-2012 |
20130155769 | Non-Volatile Memory And Method With Improved First Pass Programming - A nonvolatile memory with a multi-pass programming scheme enables a page of multi-level memory cells to be programmed with reduced floating-gate to floating-gate perturbations (Yuping effect). The memory cells operate within a common threshold voltage range or window, which is partitioned into multiple bands to denote a series of increasingly programmed states. The series is divided into two halves, a lower set and a higher set. The memory cells are programmed in a first, coarse programming pass such that the memory cells of the page with target states from the higher set are programmed to a staging area near midway in the threshold window. In particular, they are programmed closer to their targeted destinations than previous schemes, without incurring much performance penalty. Subsequent passes will then complete the programming more quickly. Yuping effect is reduced since the threshold voltage change in subsequent passes are reduced. | 06-20-2013 |
20130279263 | NONVOLATILE MEMORY AND METHOD FOR IMPROVED PROGRAMMING WITH REDUCED VERIFY - A group of memory cells of a nonvolatile memory is programmed in parallel in a programming pass with a minimum of verify steps from an erased state to respective target states by a staircase waveform. The memory states are demarcated by a set of increasing demarcation threshold values (V | 10-24-2013 |
20140003147 | Optimized Erase Operation For Non-Volatile Memory With Partially Programmed Block | 01-02-2014 |
20140119126 | Dynamic Bit Line Bias For Programming Non-Volatile Memory - A program operation for a set of non-volatile storage elements. A count is maintained of a number of program pulses which are applied to an individual storage element in a slow programming mode, and an associated bit line voltage is adjusted based on the count. Different bit line voltages can be used, having a common step size or different steps sizes. As a result, the change in threshold voltage of the storage element within the slow programming mode, with each program pulse can be made uniform, resulting in improved programming accuracy. Latches maintain the count of program pulses experienced by the associated storage element, while in the slow programming mode. The storage element is in a fast programming mode when its threshold voltage is below a lower verify level, and in the slow programming mode when its threshold voltage is between the lower verify level and a higher verify level. | 05-01-2014 |
20140185382 | ERASE FOR NON-VOLATILE STORAGE - Techniques are disclosed herein for erasing non-volatile storage elements. A sequence of increasing erase voltages may be applied to a substrate. The select line may be floated and many of the word lines may be held at a low voltage (e.g., close to 0V). However, the voltage applied to an edge word may be increased in magnitude relative to a previous voltage applied to the edge word line for at least a portion of the sequence of erase voltages. The edge word line could be the word line that is immediately adjacent to the select line. The increasing voltage applied to the edge word line may prevent or reduce damage to oxides between the select line and edge word line. It may also help to regulate the e-field across a tunnel oxide of memory cells on the edge word line. | 07-03-2014 |
20140211568 | BIT LINE CURRENT TRIP POINT MODULATION FOR READING NONVOLATILE STORAGE ELEMENTS - Upon selecting non-volatile storage elements to be sensed, the system obtains information about the position of these non-volatile storage elements, determines sensing parameters based at least in part on this information, pre-charges a charge storage device and, while maintaining the voltage level of the bit lines of these memory cells at a constant value, applies a reference signal to these non-volatile storage elements for a certain duration of time, afterwards determining whether, for the certain duration of time, the current conducted by these non-volatile storage elements exceeds a predetermined value. | 07-31-2014 |
20140219027 | Programming Select Gate Transistors And Memory Cells Using Dynamic Verify Level - Programming accuracy is increased for select gate transistors and memory cells by using a dynamic verify voltage which increases from an initial level to a final level during a programming operation. Faster-programming transistors are locked out from programming before slower-programming transistors, but experience program disturb which increases their threshold voltage to a common level with the slower-programming transistors at the conclusion of the programming operation. For programming of memory cells to different target data states, an offset between the initial and final verify levels can be different for each data state. In one approach, the offset is greater for lower target data states. The increases in the dynamic verify voltage can be progressively smaller with each subsequent program-verify iteration of the programming operation. The start of the increase can be adapted to the programming progress or can be at a predetermined program-verify iteration. | 08-07-2014 |
20140247666 | DYNAMIC ERASE DEPTH FOR IMPROVED ENDURANCE OF NON-VOLATILE MEMORY - Improving endurance for non-volatile memory by dynamic erase depth is disclosed. A group of memory cells are erased. Then, at least some of the erased memory cells are programmed. Programming the memory cells typically impacts the erase threshold distribution of those memory cells that were intended to stay erased. The erase depth of the next erase can be adjusted based on how the program operation affects the erase threshold distribution. As one example, the upper tail of the erase distribution is measured after programming. The higher the upper tail, the shallower the next erase, in one embodiment. This helps to improve endurance. In one embodiment, the erase depth is adjusted by determining a suitable erase verify level. Rather than (or in addition to) adjusting the erase verify level, the number of erase pulses that are performed after erase verify passes can be adjusted to adjust the erase depth. | 09-04-2014 |
20140247667 | PARTITIONED ERASE AND ERASE VERIFICATION IN NON-VOLATILE MEMORY - A set of memory cells can be erased by individually erasing portions of the set in order to normalize the erase behavior of each memory cell and provide more consistent erase rates. An erase voltage pulse can be applied to the set of memory cells with a first group of cells biased for erase and a second group biased to inhibit erase. The erase depth is made shallower as the device is cycled more. | 09-04-2014 |
20140254283 | Programming Select Gate Transistors And Memory Cells Using Dynamic Verify Level - Programming accuracy is increased for select gate transistors and memory cells by using a dynamic verify voltage which increases from an initial level to a final level during a programming operation. Faster-programming transistors are locked out from programming before slower-programming transistors, but experience program disturb which increases their threshold voltage to a common level with the slower-programming transistors at the conclusion of the programming operation. For programming of memory cells to different target data states, an offset between the initial and final verify levels can be different for each data state. In one approach, the offset is greater for lower target data states. The increases in the dynamic verify voltage can be progressively smaller with each subsequent program-verify iteration of the programming operation. The start of the increase can be adapted to the programming progress or can be at a predetermined program-verify iteration. | 09-11-2014 |
20140269083 | BIT LINE CURRENT TRIP POINT MODULATION FOR READING NONVOLATILE STORAGE ELEMENTS - Upon selecting non-volatile storage elements to be sensed, the system obtains information about the position of these non-volatile storage elements, determines sensing parameters based at least in part on this information, pre-charges a charge storage device and, while maintaining the voltage level of the bit lines of these memory cells at a constant value, applies a reference signal to these non-volatile storage elements for a certain duration of time, afterwards determining whether, for the certain duration of time, the current conducted by these non-volatile storage elements exceeds a predetermined value. | 09-18-2014 |
20150092496 | Dynamic Bit Line Bias For Programming Non-Volatile Memory - A program operation for a set of non-volatile storage elements. A count is maintained of a number of program pulses which are applied to an individual storage element in a slow programming mode, and an associated bit line voltage is adjusted based on the count. Different bit line voltages can be used, having a common step size or different steps sizes. As a result, the change in threshold voltage of the storage element within the slow programming mode, with each program pulse can be made uniform, resulting in improved programming accuracy. Latches maintain the count of program pulses experienced by the associated storage element, while in the slow programming mode. The storage element is in a fast programming mode when its threshold voltage is below a lower verify level, and in the slow programming mode when its threshold voltage is between the lower verify level and a higher verify level. | 04-02-2015 |
Patent application number | Description | Published |
20130014386 | MOUNTING APPARATUS, COATING APPARATUS, MOUNTING METHOD, COATING METHOD, AND PROGRAMAANM Baba; HiroshiAACI SaitamaAACO JPAAGP Baba; Hiroshi Saitama JPAANM Oowada; KenichiAACI SaitamaAACO JPAAGP Oowada; Kenichi Saitama JP - A mounting apparatus including: a holding portion capable of holding and releasing an electronic component including a plurality of electrodes; a movement mechanism configured to move the holding portion; a coating portion in which a coating object to be applied onto the plurality of electrodes is set; and a controller configured to control the holding portion to hold the electronic component, control the movement mechanism to move the holding portion to a position above the coating portion, control the holding portion to release the electronic component above the coating portion so that the coating object is applied onto the electrodes, control the holding portion to hold the released electronic component again, control the movement mechanism to move the holding portion to a position above one of a substrate and another electronic component, and control the electronic component to be mounted on one of the substrate and the another electronic component. | 01-17-2013 |
20140047966 | DISCHARGE MECHANISM, SUBSTITUTE ROUTE MEMBER, PART SUPPLY MECHANISM, AND METHOD OF MANUFACTURING SUBSTRATE - A discharge mechanism includes a discharge route, a cutting unit, and a substitute route member. Through the discharge route, a waste tape, which is a carrier tape generated after an electronic component is taken out therefrom, passes. The cutting unit has a cutting portion which cuts the waste tape which passes through the discharge route, forms a part of the discharge route, and is capable of being attached to and detached from the discharge route. The substitute route member is configured to substitute a gap of the discharge route which is generated when the cutting unit is detached from the discharge route. | 02-20-2014 |
Patent application number | Description | Published |
20110090247 | PARTICLE IMAGE ANALYSIS METHOD AND APPARATUS - A particle image analyzing method is adapted so that while raising image-reviewing efficiency at a cropped image level of particle components in a sample, the entire sample can be observed without significantly changing a related apparatus configuration. Prior to image reviewing of an imaging region, cropped images thereof are reviewed and, with reference to the images arranged for each kind of particle component, if the operator judges any particles to have been falsely identified, the operator uses an operating unit to modify positions of the particles to those of correct component items. An overall image of the imaging region is displayed and if any components to be added (overlooked components) appear, the kinds of these components are identified and quantitative data on each kind of component is registered. Upon completion of the registration, the concentration of the sample is recalculated and a comment is entered in a comment field. | 04-21-2011 |
20120076349 | FLOW TYPE PARTICLE IMAGE ANALYSIS METHOD AND DEVICE - At each of mutually different multiple focal positions, focal adjustment parameter values are obtained from images of standard particles made of the same substance. Each focal adjustment parameter value is figured out as any one of the ratio between the density value around the center of the standard particle image and the density value around the outline, the difference therebetween, and the density value around the center. The in-focus position is adjusted on the basis of the relationship between the obtained focal adjustment parameter values and the focal positions. Moreover, on the basis of the relationship between the focal adjustment parameter values and the focal positions, the parameter values are converted into focal positions, and the focal positions and dispersion thereof are used to check the displacement of the in-focus position and the thickness of the sample liquid. | 03-29-2012 |
20120134559 | PARTICLE IMAGE ANALYSIS APPARATUS - The particle analysis apparatus includes means that perform processes upon image processing of images ( | 05-31-2012 |
Patent application number | Description | Published |
20130257411 | POSITION DETECTION DEVICE - In a position detection device, an amplitude modulation is executed for AC excitation signals Sc using modulation wave signals. Differential amplifiers execute a voltage conversion of the modulated wave signal Sin, Cos to digital data SIN, COS and transmit them to a microcomputer. The microcomputer multiplies the modulated wave signals SIN, COS with parameters cos φ, sin φ, and executes a subtraction of the multiplied value to obtain an error-correlation value ε. An angle calculations section in the microcomputer receives a detected value εc obtained by multiplying the error-correlation value ε with a binary detection signal Rd. The binary detection signal Rd corresponds to a positive sign or a negative sign of the signal Sc. It is adjusted that the sampling number of samples of the signal Rd corresponding to a positive value is equal to that corresponding to a negative value during one period of the signal Sc. | 10-03-2013 |
20150054431 | CONTROL DEVICE OF AC MOTOR - A control device of a three-phase AC motor includes: an inverter that drives the AC motor; a current sensor that senses a current flowing in a sensor phase of the AC motor as a sensor phase current; and a controller that switches on and off a switching element of the inverter to control a current flowing through the AC motor. The controller includes: a current estimation device that estimates d-axis and q-axis current estimated values based on the sensor phase current and an electric angle of the AC motor; and a zero-crossing interpolation device that interpolates a command value relating to a voltage of the AC motor when the sensor phase current is in a zero cross range, which includes a zero point. When the sensor phase current is in the zero cross range, the zero-crossing interpolation device interpolates the command value with a continuous variable value. | 02-26-2015 |
20150054432 | CONTROL DEVICE OF AC MOTOR - A control device of a three-phase AC motor includes: an inverter for driving the motor; a current sensor for sensing a sensor phase current of the motor; and a controller for controlling the motor. The controller includes: a current estimation device for estimating d-axis and q-axis current estimated values based on the sensor phase current and an electric angle of the motor; and a zero-crossing interpolation device for interpolating the d-axis and q-axis current estimated values by fixing the d-axis and q-axis current estimated values when the sensor phase current is in a zero cross range, which includes a zero point, so that the sensor phase current crosses the zero point, and for outputting interpolated d-axis and q-axis current estimated values as fixed d-axis and q-axis values, which are used for a feedback control relating to current flowing through the motor. | 02-26-2015 |
20150054438 | CONTROL DEVICE OF AC MOTOR - A control device of a three-phase AC motor includes: an inverter; a current sensor for a sensor phase current; and a controller switching a switching element of each phase of the inverter and having a current estimation device, which calculates a sensor-phase-standard current phase according to α and β axis currents and a current estimated value of another phase. The current estimation device calculates the α axis current at every switching and intermediate timings, calculates a first differential value of the α axis current at every switch timing, calculates the β axis current according to the first differential value, calculates a second differential value of the α axis current at every intermediate timing, and calculates the β axis current according to the second differential value. The intermediate timing is set to have an unequal interval between two adjacent switch timings. | 02-26-2015 |
20150311821 | SWITCHING CONTROL APPARATUS - A switching control apparatus is applied to a load drive system that includes a DC voltage converter having a reactor and at least one switching element, and a power transducer including multiple switching element pairs. The switching control apparatus controls a switching timing of the switching element in the DC voltage converter and the switching element pairs in the power transducer. The switching control apparatus includes a DC voltage converter control circuit, a DC voltage converter drive circuit, a power transducer control circuit, a power transducer drive circuit, a switching prohibition period calculation portion, and a switching correction portion. | 10-29-2015 |
Patent application number | Description | Published |
20110181292 | SYSTEM FOR DIAGNOSING SENSORS TO FIND OUT ABNORMALITY THEREIN - In an abnormality diagnosing system for first and second current sensors for measuring a current, an obtaining unit obtains at least one pair of measured values of the first and second current sensors. The at least one pair of measured values is measured by the first and second current sensors at a substantially same timing. A diagnosing unit diagnoses whether there is an abnormality in at least one of the first and second current sensors based on a function defining a relationship between the at least one pair of measured values of the first and second current sensors. | 07-28-2011 |
20110210687 | CONTROL APPARATUS FOR ELECTRIC ROTATING MACHINE - A control apparatus for use with an electric power conversion system which is equipped with a dc/ac converter connected to an electric rotating machine and a capacitor joined to input terminals of the dc/ac converter. The control apparatus stores an angle of rotation (i.e., start angle θ | 09-01-2011 |
20110295530 | FAULT DIAGNOSIS DEVICE FOR AMPLITUDE MODULATION DEVICE - The fault diagnosis device is for diagnosing presence of a fault in an amplitude modulation device which modulates an amplitude of a carrier wave signal to generate a modulated wave signal, comprising. The fault diagnosis device includes a sampling means to perform sampling of at least one of the carrier wave signal and the modulated wave signal at a period different from a period of the carrier wave signal, and a diagnosis means to perform diagnosis of presence of a fault in the amplitude modulation device based on sampled values outputted from the sampling means. | 12-01-2011 |
20120143520 | ABNORMALITY DETERMINATION APPARATUS FOR ANGLE DETECTION DEVICE - The abnormality determination apparatus, which is for determining presence of an abnormality in an angle detection device configured to output an output signal having a value equivalent to a rotational angle of a rotating body, includes a smoothing means configured to receive the output signal of the angle detection device to smooth a dependent variable of a function whose independent variable is the rotational angle equivalent value, and a parameter calculation means for calculating an abnormality determination parameter based on the dependent variable smoothed by the smoothing means. The function is such that an integrated value of the rotational angle equivalent value over a predetermined time section is always positive or negative, and is configured to vary the dependent variable continuously in accordance with continuous variation of the independent variable in at least a part of the predetermined time section. | 06-07-2012 |
20130262009 | POSITION DETECTION DEVICE - In a position detection device, an amplitude modulation is executed for AC excitation signals Sc using modulation wave signals. Differential amplifiers execute a voltage conversion of the modulated wave signal Sin, Cos to digital data SIN, COS and transmit them to a microcomputer. The microcomputer multiplies the modulated wave signals SIN, COS with parameters cos φ, sin φ, and executes a subtraction of the multiplied value to obtain an error-correlation value ε. An angle calculations section in the microcomputer receives a detected value εc obtained by multiplying the error-correlation value ε with a binary detection signal Rd. The binary detection signal Rd corresponds to a positive sign or a negative sign of the signal Sc. The sampling time of the AC excitation signal Sc is set to a time at which an absolute value of the AC excitation signal Sc exceeds a regulated value. | 10-03-2013 |
20150123577 | CONTROL APPARATUS FOR AC MOTOR - A control apparatus controls an AC motor by detecting current passing through one phase. The apparatus includes an upper controller which includes a torque command calculation section, and a torque monitoring section monitoring torque to determine whether the torque is within a range, and a lower controller which controls current supply to an inverter based on a torque command value to control the motor, and which acquires information on a current-supply state and a rotation state of the motor and transmits information on a control state to the upper controller. At least one of the controllers estimates a current estimate value of an estimated phase or a d-q axis current estimate value based on a current detection value of the one phase and an electrical angle, and calculates information for monitoring torque based on the current estimate value. The torque monitoring section monitors the torque based on the information. | 05-07-2015 |
20150123580 | CONTROL APPARATUS FOR AC MOTOR - According to a control apparatus for an AC motor, a switching section selects a two-phase control current value as a current fixing value, when a first current detection value of a first phase of the AC motor and a second current detection value of a second phase of the AC motor are normal. The switching section selects an one-phase control current value, which is calculated based on a normal phase current detection value, which is a value of a normal phase and is one of the first and second current detection values, as the current fixing value, when an abnormality is detected in part of the first and second current detection values, and a predetermined period has elapsed from the detection of the abnormality. | 05-07-2015 |
20150123581 | CONTROL APPARATUS FOR AC MOTOR - According to a control apparatus for an AC motor, a switching section selects a two-phase control current value as a current fixing value, when a first current detection value of a first phase of the AC motor and a second current detection value of a second phase of the AC motor are normal. The switching section selects an one-phase control current value, which is calculated based on a normal phase current detection value, which is a value of the normal phase and is one of the first and the second current detection values, as the current fixing value, when it is determined that the current supplied to the AC motor has been stabilized after an abnormality is detected in part of the first and second detection values. | 05-07-2015 |
20150229247 | APPARATUS FOR CONTROLLING AC MOTOR - In an apparatus, a controller performs, as a calculation of d- and q-axis values of a current vector, a first task and a second task. The first task expands one of a measured first phase current and another phase current into Fourier series of the corresponding phase current as a function of an electric rotational angle of an AC motor. The first task extracts a first-order component from the Fourier series to obtain first and second Fourier coefficients of the first-order component. The second task calculates the d-axis value as a first sum of the first and second Fourier coefficients to which temporally-invariant constants of a first pair have been multiplied, and the q-axis value as a second sum of the first and second Fourier coefficients to which temporally-invariant constants of a second pair have been multiplied. | 08-13-2015 |
20150311851 | SWITCHING CONTROL DEVICE - A switching control device is applied to a motor generator drive system equipped with a boost converter and an inverter. In order to avoid generation of a superimposed surge voltage, the switching control device corrects a switching timing tsw of the booster converter so that a switching timing of the booster converter is not overlapped with a switching timing of the inverter. A booster converter switching correction means corrects the switching timing tsw of the correction target to bring forward and before a start timing tpa of the switching inhibition period Pp. This makes it possible to suppress fluctuation in output of a load due to deterioration in controllability of the electric power converter, for example, suppress fluctuation in output torque of a motor generator. | 10-29-2015 |
Patent application number | Description | Published |
20100316411 | IMAGE FORMING APPARATUS - An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): | 12-16-2010 |
20100316412 | IMAGE FORMING APPARATUS - An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): | 12-16-2010 |
20120039630 | IMAGE FORMING APPARATUS - An image forming apparatus containing an electrophotographic photoreceptor and a toner for developing an electrostatic charge image, where the electrophotographic photoreceptor has an electroconductive substrate with a surface roughness Ra of from 0.01 μm to 0.3 μm; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies formula (1): | 02-16-2012 |
20120045246 | IMAGE FORMING APPARATUS - An image forming apparatus containing an electrophotographic photoreceptor and a toner for developing an electrostatic charge image, where the electrophotographic photoreceptor has an undercoat layer containing metal oxide particles; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): | 02-23-2012 |
20130059250 | IMAGE FORMING APPARATUS - A method of forming an image on a substrate with an electrophotographic photoreceptor and a toner, wherein the electrophotographic photoreceptor has an electroconductive substrate; the electroconductive substrate has a surface roughness Ra of from 0.01 μm to 0.3 μm; the toner contains toner matrix particles formed in an aqueous medium, has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies: Dns≦0.233EXP(17.3/Dv50) (1) where Dv50 is the volume median diameter (μm) of the toner, and Dns is the percentage in number of toner particles having a particle diameter of from 2.00 μm to 3.56 μm. | 03-07-2013 |
20130143156 | IMAGE FORMING APPARATUS - A method of forming an image on a substrate with an electrophotographic photoreceptor and a toner, a photosensitive layer of the electrophotographic photoreceptor contains a resin having a structural unit represented by the following formula (A) | 06-06-2013 |
Patent application number | Description | Published |
20090041500 | IMAGE FORMING APPARATUS - To provide an image forming apparatus which is capable of suppressing soiling of image white parts, residual images (ghosts), fading, etc. due to non-uniformity in the particle size distribution of a toner or mismatching between a toner and a photoreceptor and which is able to improve image quality, provides good fixing properties and cleaning properties with little fogging or dot missing, presents good reproducibility of fine lines, and even when a high speed printing machine is used, can reduce a problem of e.g. soiling in a long-term use and presents excellent image stability. | 02-12-2009 |
20090053634 | Image Forming Apparatus - To provide a toner excellent in the image stability, whereby the image quality can be improved while suppressing soiling of image white parts, residual images (ghosts), fading (blotted image follow-up properties), etc., cleaning properties are good, and even when a high speed printing machine is used, it is possible to reduce a problem of soiling, etc. | 02-26-2009 |
20090291379 | TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT - To provide toner which is capable of suppressing consuming amount of toner and preventing cleaning failure, and even when a high speed printing machine is used, can reduce a problem of e.g. fogging in a long-term use and is excellent in image stability. | 11-26-2009 |