Patent application number | Description | Published |
20090002458 | INK JET PRINT HEAD SUBSTRATE AND INK JET PRINT HEAD - An ink jet print head substrate is provided which can prevent voltage drop variations during driving, no matter in what way the ejection energy generation elements are driven, and which can also apply a stable energy to the ejection energy generation elements at all times. The ink jet print head substrate of this invention has a plurality of kinds of ejection energy generation elements to generate different magnitudes of ink ejection energy and wiring portions. The print head substrate also has a plurality of wiring layers arranged to at least partly overlap one another. The wiring portions connected to the different kinds of ejection energy generation elements are provided at least partly in different wiring portions. | 01-01-2009 |
20090091594 | HEAD SUBSTRATE, PRINTHEAD, HEAD CARTRIDGE, AND PRINTING APPARATUS - This invention is directed to: a printhead substrate which employs a constant current driving method and can suppress power consumption in a standby state, prevent an increase in printhead temperature, and stably discharge ink; a printhead using the printhead substrate; a head cartridge incorporating the printhead; and a printing apparatus using the printhead. The head substrate includes a plurality of printing elements; a plurality of driving elements which are provided in correspondence with the plurality of printing elements and drive the plurality of printing elements; a reference voltage generation circuit which generates a reference voltage; a reference current generation circuit which generates a first reference current on the basis of the generated reference voltage; a plurality of constant current sources, each of which generates a constant current to drive the plurality of printing elements on the basis of the generated first reference current; and a switch which controls supply of the first reference current in accordance with a printing operation. | 04-09-2009 |
20090122097 | PRINTHEAD AND PRINTING APPARATUS - A printhead in which the voltage fluctuation absorption range of a MOS transistor serving as a constant current source is narrowed according to constant current driving. The printhead includes a controller which controls voltage fluctuations to adjust a current supplied to a plurality of printing elements. The printhead also includes a DC/DC converter which outputs a voltage of a voltage value to be applied to a plurality of printing elements from outside a printing element substrate. | 05-14-2009 |
20090135229 | ELEMENT SUBSTRATE, PRINTHEAD, AND HEAD CARTRIDGE - This invention provides an element substrate having a heater selection circuit normally operable even in the use of voltage conversion circuits, which are arranged along the nozzle arrayed direction, each having a small-area in order to reduce the area of the element substrate. The element substrate according to this invention includes a heater selection circuit, which receives a signal output from a voltage conversion circuit, a block selection signal, and a print data signal, and generates and outputs a signal for performing switching by a switching element. | 05-28-2009 |
20090174753 | HEAD SUBSTRATE, PRINTHEAD, HEAD CARTRIDGE, AND PRINTING APPARATUS - The objective of this invention is to provide a head substrate capable of integrating driver transistors while keeping the size small even at high nozzle density, and integrating a functional circuit such as a temperature sensor or energy adjustment circuit. To achieve this, an ink supply port, a heater array which is arrayed along the longitudinal direction of the ink supply port and includes a plurality of heaters, a transistor array which is arrayed along the arrayed direction of the heater array and includes a plurality of transistors for driving a plurality of heaters, and a logic circuit which drives the transistor array are arranged on a head substrate. The logic circuit is arranged between the heater array and the transistor array. | 07-09-2009 |
20090262167 | INKJET RECORDING HEAD SUBSTRATE AND DRIVE CONTROL METHOD, INKJET RECORDING HEAD, INKJET RECORDING HEAD CARTRIDGE AND INKJET RECORDING APPARATUS - An inkjet recording head substrate having an electrothermal transducer for generating thermal energy used to discharge ink and a drive element for driving the electrothermal transducer mounted thereon includes a first circuit portion for outputting selection signals for selecting the electrothermal transducer to be driven at a amplitude level of a second voltage higher than a first voltage based on an input signal of the amplitude level of the first voltage, a second circuit portion for inputting the selection signals from the first circuit portion and controlling the drive element corresponding to the electrothermal transducer to be driven based on the selection signals subject to the second voltage, and a plurality of signal lines for transmitting the selection signals between the first and second circuit portions. | 10-22-2009 |
20100097418 | RECORDING HEAD AND RECORDING APPARATUS USING RECORDING HEAD - A recording head having a plurality of recording elements that are grouped into a plurality of blocks and ejecting ink by driving the recording elements in a time-divisional manner includes driving units configured to drive the recording elements, an input unit configured to receive an enable signal that defines a period during which the driving of the recording elements is enabled at one ink ejection, and a control unit configured to control the time-divisional driving by the driving units on the basis of pulses detected during the period defined by the enable signal received by the input unit. | 04-22-2010 |
20100118074 | RECODING ELEMENT SUBSTRATE, RECORDING HEAD EQUIPPED WITH THE SAME, RECORDING HEAD CARTRIDGE, AND RECORDING APPARATUS - A recording element substrate which is provided with a first recording element group and a second recording element group, each group including a plurality of recording elements. The recording element substrate includes a first terminal configured to input a data signal, a second terminal configured to input a latch signal, a shift register configured to receive the data signal input from the first terminal, a first latch circuit configured to latch data stored in the shift register based on the latch signal of a first pulse width input from the second terminal, a second latch circuit configured to latch the data stored in the shift register based on the latch signal of a second pulse width which is shorter than the first pulse width of the latch signal input from the second terminal, a first driving circuit configured to control driving of the recording elements included in the first recording element group based on a signal output from the first latch circuit, and a second driving circuit configured to control driving of the recording elements included in the second recording element group based on a signal output from the second latch circuit. | 05-13-2010 |
20100123971 | RECORDING ELEMENT SUBSTRATE AND RECORDING HEAD INCLUDING RECORDING ELEMENT SUBSTRATE - A recording element substrate includes a recording element array including a plurality of recording elements, a drive circuit configured to drive the recording elements, and a heater located to surround the recording element array as viewed in a direction perpendicular to a surface of the recording element substrate and located above or below a capacitive element or a resistive element included in the drive circuit as viewed on a cross section of the recording element substrate. | 05-20-2010 |
20100134543 | RECORDING ELEMENT SUBSTRATE AND RECORDING HEAD HAVING THE SAME - A recording element substrate includes a recording element, a first voltage conversion circuit configured to receive a first control signal and to output the first control signal with an increased amplitude, a second voltage conversion circuit configured to receive a second control signal and to output the second control signal with an increased amplitude, a PMOS transistor connected to one end of the recording element, and an NMOS transistor connected to the other end of the recording element, wherein the PMOS transistor has a gate connected to an output of the first voltage conversion circuit, and the NMOS transistor has a gate connected to an output of the second voltage conversion circuit. | 06-03-2010 |
20100283819 | LIQUID EJECTION HEAD - A print head is provided that well preserves ink characteristics upon printing by way of performing effective ink preliminary heating. The print head has heaters, and ejection openings formed at locations corresponding to the heaters. Viewed from the side from which ink is ejected, a sub-heater is established in the print head between the ink supply port and the print elements such as to surround the ink supply port. | 11-11-2010 |
20110012950 | ELEMENT BOARD FOR PRINTHEAD, AND PRINTHEAD HAVING THE SAME - In a printhead element board including a plurality of printing elements which align in a predetermined direction, driving circuits which drive the printing elements, and an element selection circuit which selects printing elements within each group for each group having a predetermined number of adjacent printing elements, a plurality of element selection circuits are laid out adjacent to the driving circuits of the respective groups. With this layout, even if the number of printing elements increases, only the length in the printing element array direction increases without increasing the length in a direction perpendicular to the printing element array direction. | 01-20-2011 |
20110102512 | SUBSTRATE FOR LIQUID DISCHARGING HEAD AND LIQUID DISCHARGING HEAD - In a liquid-discharging-head substrate including a plurality of ink supply ports, if lines are provided on the substrate between adjacent elements, energy generating elements cannot be arranged in high density. A liquid-discharging-head substrate according to the present invention includes an element array in which a plurality of elements configured to generate energy for discharging liquid are arranged, a first common line, a second common line, first individual lines configured to connect the elements and the first common line, and second individual lines configured to connect the elements and the second common line. The element array is provided between the first common line and the second common line, the first individual lines are provided in an area between the element array and the first common line, and the second individual lines are provided in an area between the element array and the second common line. | 05-05-2011 |
20110122181 | PRINTHEAD SUBSTRATE, PRINTHEAD AND PRINTING APPARATUS - A printhead substrate comprises: a plurality of printing elements arrayed in a predetermined direction; first logic circuits arranged in correspondence with respective groups each assigned to a predetermined number of adjacent printing elements, and configured to select a printing element to be driven from the printing elements belonging to each of the groups; driving circuits configured to drive the printing elements based on signals output from the first logic circuits; second logic circuits configured to supply externally input printing data to the first logic circuits corresponding to the respective groups; and electricity storage units arranged in the respective groups, connected to a power supply line for supplying power to at least one of the first logic circuits, the second logic circuits, and the driving circuits, and configured to store charges in accordance with a voltage applied through the power supply line. | 05-26-2011 |
20110134192 | INK JET PRINT HEAD SUBSTRATE AND INK JET PRINT HEAD - An ink jet print head substrate is provided which can prevent voltage drop variations during driving, no matter in what way the ejection energy generation elements are driven, and which can also apply a stable energy to the ejection energy generation elements at all times. The ink jet print head substrate of this invention has a plurality of kinds of ejection energy generation elements to generate different magnitudes of ink ejection energy and wiring portions. The print head substrate also has a plurality of wiring layers arranged to at least partly overlap one another. The wiring portions connected to the different kinds of ejection energy generation elements are provided at least partly in different wiring portions. | 06-09-2011 |
20110273498 | DRIVING DEVICE, RECORDING HEAD, AND APPARATUS USING THE SAME - According to an aspect of the present invention, a high-resolution, small-size, low-cost driving device includes a clock signal generating unit configured to receive a first clock signal of a differential signaling system and generate a second clock signal, an input unit configured to input a data signal which includes first information and second information, a first timing generating unit configured to select an edge of the second clock signal based on the first information and to generate a first signal by counting occurrences of the selected edge a second timing generating unit configured to select edge of the second clock signal based on the second information and to generate a second signal by counting occurrences of the selected edge, a logical circuit configured to generate a pulse signal based on the first and second signals, and a driving element configured to drive a driven element using the pulse signal. | 11-10-2011 |
20110273507 | PRINTHEAD AND PRINTING APPARATUS - This invention is directed to real time detection of occurrence of a transfer error and feedback of the detection result to a printing apparatus in consideration of a possible risk that a signal transfer error occurs on a transfer path that becomes longer as the printhead is elongated. To accomplish this, in a printhead configured by cascade-connecting a plurality of element substrates, information of a transfer error detected in real time in each element substrate during transfer of a print data signal is output to an element substrate on the next stage by taking account of information input from an element substrate on the preceding stage. Information containing pieces of information from all element substrates is output from an element substrate on the final stage. | 11-10-2011 |
20110274213 | RECEPTION DEVICE AND APPARATUS HAVING THE SAME - Data transfer is realized to support a high-speed and complex driving control of the driving element. A driving device includes a driving unit configured to supply a driving element with a pulse signal that determines a driving period to drive the driving element, an input unit configured to receive, in synchronization with a trigger signal, a data signal containing first information, second information, a first flag and a second flag that determine a waveform of the pulse signal, a first setting unit configured to set in the driving unit the first information that is input to the input unit, a retaining unit configured to read and retain the second information on the basis of the first flag, and a second setting unit configured to set in the driving unit the second information that is retained in the retaining unit on the basis of the second flag. | 11-10-2011 |
20110279511 | RECORDING ELEMENT SUBSTRATE - A substrate includes a first and a second element arrays in each of which a plurality of elements is arrayed along a first direction of the substrate, a first and a second pad arrays in which a plurality of pads is arrayed along respective two opposite sides extending along a second direction of the substrate, a reception circuit configured to receive data for driving the elements, a data circuit configured to generate data corresponding to the first and the second element array, respectively based on the received data, a signal generation circuit configured to generate a period signal for determining a drive period of the elements based on the generated data, and an output circuit configured to output information related to the substrate. | 11-17-2011 |
20110285788 | LIQUID DISCHARGE HEAD AND CIRCUIT BOARD - A liquid discharge head includes a liquid discharge head substrate including a discharge port through which a liquid is discharged, and a plurality of energy generating elements that generate energy for discharging the liquid from the discharge port, and a circuit board having flexibility including a pair of differential transmission lines for transmitting differential transmission signals used as logical signals for driving the energy generating elements, to the liquid discharge head substrate, and a voltage supply line for supplying a voltage applied to the energy generating elements to obtain the energy, to the liquid discharge head substrate, wherein the pair of differential transmission lines is provided on one surface of the circuit board, and the voltage supply line is provided on the other surface of the circuit board, which is on a reverse side of the one surface. | 11-24-2011 |
20110292154 | ELEMENT SUBSTRATE, PRINTHEAD, AND HEAD CARTRIDGE - This invention provides an element substrate having a heater selection circuit normally operable even in the use of voltage conversion circuits, which are arranged along the nozzle arrayed direction, each having a small-area in order to reduce the area of the element substrate. The element substrate according to this invention includes a heater selection circuit, which receives a signal output from a voltage conversion circuit, a block selection signal, and a print data signal, and generates and outputs a signal for performing switching by a switching element. | 12-01-2011 |
20110310210 | DEVICE AND APPARATUS FOR CONTROLLING SAME - A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal. | 12-22-2011 |
20120162317 | PRINTING ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTHEAD MANUFACTURING METHOD - A printhead manufacturing method comprises preparing a printing element substrate including a receiver including a first terminal and second terminal, a first input pad connected to the first terminal, a second input pad connected to the second terminal, and a plurality of selection pads connected to the second terminal via at least two resistive elements out of a plurality of printing elements to obtain combined resistances different from each other; preparing a head substrate including a first transmission line, and a second transmission line; selects one of the plurality of selection pads to be connected to the first transmission line in accordance with values of the combined resistances; and connecting at least one of the plurality of the selected selection pads and the first transmission line, connecting the first input pad and the first transmission line, and connecting the second input pad and the second transmission line. | 06-28-2012 |
20120306953 | PRINTING APPARATUS AND DISCHARGE INSPECTION METHOD - A printing apparatus includes a control unit configured to perform control so as to apply a first driving voltage to a heat generation element to discharge ink from an orifice and then apply a second driving voltage to the heat generation element so as not to cause bubbling or discharging of ink. In this case, the control unit performs control to apply the second driving voltage before detection of a feature point on the waveform of a signal representing temperatures in a temperature drop process detected by the temperature detection element after application of the first driving voltage and along with the application of the first driving voltage based on a temperature detected by a temperature detection element. | 12-06-2012 |
20130057609 | RECORDING HEAD AND RECORDING APPARATUS USING RECORDING HEAD - A recording head having a plurality of recording elements that are grouped into a plurality of blocks and ejecting ink by driving the recording elements in a time-divisional manner includes driving units configured to drive the recording elements, an input unit configured to receive an enable signal that defines a period during which the driving of the recording elements is enabled at one ink ejection, and a control unit configured to control the time-divisional driving by the driving units on the basis of pulses detected during the period defined by the enable signal received by the input unit. | 03-07-2013 |
20130093808 | ELEMENT SUBSTRATE, PRINTHEAD AND PRINTING APPARATUS - An element substrate, comprising a first resistance element and second resistance element each of which includes a first terminal and a second terminal and is arranged in a predetermined direction, wherein the first terminals are connected to a first line for commonly supplying a current, and the second terminals are connected to a second line for commonly supplying a current, and a detection unit configured to detect a voltage of the first terminal of the first resistance element and a voltage of the first terminal of the second resistance element while power is supplied to the first resistance element and is not supplied to the second resistance element. | 04-18-2013 |
20130155165 | DEVICE AND APPARATUS FOR CONTROLLING SAME - A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal. | 06-20-2013 |
20130208037 | PRINT ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS - This invention provides a print element substrate having a plurality of printing elements. The print element substrate includes a detection circuit configured to detect substrate information of the print element substrate, a shift register configured to serially input print signals for performing driving control of the printing elements, serial-parallel convert the print signals, and parallelly output the print signals, a latch circuit configured to latch the print signals parallelly output from the shift register, and a driving circuit configured to drive the plurality of printing elements based on the print signals latched by the latch circuit. Detection signals based on the substrate information are parallelly input from the detection circuit to the shift register until serial input of next print signals starts after parallelly outputting the print signals from the shift register to the latch circuit. | 08-15-2013 |
20130300789 | DEVICE AND APPARATUS FOR CONTROLLING SAME - A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal. | 11-14-2013 |
20130314464 | PRINTHEAD SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS - A printing element substrate, comprising a plurality of printing elements which form a plurality of groups, a first generating unit configured to generate a threshold signal set for each of the plurality of groups and a ramp signal, based on an externally received digital signal, and second generating units, which are arranged in correspondence with the respective groups, configured to generate, based on the ramp signal and the threshold signal, enable signals for setting a period during which the printing element is driven. | 11-28-2013 |
20130342609 | PRINTHEAD SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS - A printhead substrate, comprising a plurality of printing elements which are assigned to a plurality of groups, a plurality of driving circuits which are arranged in correspondence with the respective groups and drive the printing elements, a first current source configured to generate currents of a plurality of current amounts corresponding to the respective groups, second current sources which are arranged in correspondence with the respective driving circuits and configured to generate currents to be supplied to the printing elements, and setting units configured to generate voltages in accordance with currents generated by the first current source and set currents to be generated by the second current sources based on the voltages. | 12-26-2013 |
20140035977 | RECEPTION DEVICE AND APPARATUS HAVING THE SAME - Data transfer is realized to support a high-speed and complex driving control of the driving element. A driving device includes a driving unit configured to supply a driving element with a pulse signal that determines a driving period to drive the driving element, an input unit configured to receive, in synchronization with a trigger signal, a data signal containing first information, second information, a first flag and a second flag that determine a waveform of the pulse signal, a first setting unit configured to set in the driving unit the first information that is input to the input unit, a retaining unit configured to read and retain the second information on the basis of the first flag, and a second setting unit configured to set in the driving unit the second information that is retained in the retaining unit on the basis of the second flag. | 02-06-2014 |
20140063128 | LIQUID DISCHARGE HEAD - A liquid discharge head includes a first unit configured to supply power, and a second unit including an input unit to which the power is input, a plurality of heaters connected to the input unit via a common power source line and configured to discharge liquid, an energization unit configured to energize the plurality of heaters, and a selection unit configured to select a target heater from the heaters for discharging liquid to be energized in turn by the energization unit for a period corresponding to a time interval at which liquid is discharged, wherein the selection unit further selects non-target heaters from the heaters to be energized different from the heater targeted for use for discharging liquid before and after the target heater is energized. | 03-06-2014 |
20140300660 | LIQUID EJECTION HEAD SUBSTRATE AND LIQUID EJECTION HEAD - A liquid ejection head substrate includes:
| 10-09-2014 |
20140327717 | PRINTHEAD AND PRINTING APPARATUS - A printhead according to an embodiment of this invention in which a plurality of element substrates each including a plurality of printing elements are arranged in the arrayed direction of the printing elements has the following arrangement. Each element substrate includes a temperature detection element for detecting the temperature of the element substrate. The printhead includes a head control IC connected to each element substrate and configured to control driving of the printing elements integrated on the element substrates. The head control IC and the element substrates are connected via a head terminal by a signal wire for transferring a signal between the head control IC and each element substrate. A temperature detection signal output from the temperature detection element and an image data signal are multiplexed on part of the signal wires. | 11-06-2014 |
20140354720 | ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS - A recent inkjet printing apparatus includes a large-capacitance capacitor to stabilize a heater power supply. The presence of this capacitor requires a long time to drop the heater voltage at the time of power shutdown or the like. For this reason, an unwanted heater current may flow during the drop. To solve this problem, in this embodiment, a high voltage logic circuit is provided near a printing element, and a terminal is provided so that a signal can directly be input to this circuit. Heater driving control is performed via the terminal. This makes it possible to reliably control the heater regardless of the logic power supply state even if the logic voltage abruptly drops at the time of power shutdown or the like. | 12-04-2014 |
20150015632 | LIQUID EJECTION HEAD AND SUBSTRATE - A liquid ejection head includes an ejection port for ejecting liquid, a liquid chamber communicating with the ejection port, and a substrate having a heat generating resistor arranged in the liquid chamber at a position corresponding to the ejection port and a bubble detecting device arranged on the heat generating resistor for controlling driving of the heat generating resistor by detecting a bubble produced by the heat generated by the heat generating resistor. The bubble detecting device has two electrodes arranged in the liquid chamber and, as viewed in the direction perpendicular to the substrate, one of the two electrodes is arranged at a position overlapping the heat generating resistor whereas the other one of the two electrodes is arranged at a position not overlapping the heat generating resistor. | 01-15-2015 |
20150029267 | LIQUID EJECTING HEAD, SUBSTRATE FOR LIQUID EJECTING HEAD, AND PRINTING APPARATUS - A print head includes upper protective members located at positions corresponding to heat generating resistor elements to protect the heat generating resistor elements, and further, a part of the protective member being eluted to ink when a current flows inside in a state in which the ink is reserved in the pressure chambers. The print head includes a drive element and a logic circuit capable of allowing a current to independently flow in each of the upper protective layers so as to elute a part of the upper protective layer, in which the current flows, to the ink. | 01-29-2015 |
20150062212 | ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS - An element substrate capable of suppressing occurrence of electromagnetic noise upon driving printing elements on an element substrate with long wiring lengths, preventing an operation error, and printing a high-quality image is provided. In the element substrate, plural element substrates each including printing elements are arrayed in an arrayed direction of the printing elements. Each element substrate including a wiring for supplying a driving power to drive the printing elements, and a ground wiring from the printing elements is configured as follows. Each element substrate includes a delay circuit for delaying a heat enable signal to drive the printing elements and supplying it to each printing element, and a switchover circuit for switching over, in accordance with a control signal, a delay sequence when supplying the heat enable signal to each printing element. | 03-05-2015 |