Patent application number | Description | Published |
20110103848 | DEVELOPMENT AGENT SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A development agent supply device is provided, which includes a development agent holding member configured to rotate around an axis parallel to a first direction such that a development agent holding surface, which faces an intended device to be supplied with development agent in a first position, moves in a second direction perpendicular to the first direction, a transfer board configured to charge and transfer development agent thereon to a second position to face the development agent holding surface, and a facing member disposed to face the development agent holding surface in a position between the first position and the second position in the second direction, the facing member being configured to charge development agent held on the development agent holding surface under an alternating electric field generated between the facing member and the development agent holding member. | 05-05-2011 |
20110236078 | Developer Supply Device and Image Forming Apparatus Having the Same - A developer supply device includes a developer-carrying body having a developer-carrying surface that faces an intended device in a first position and moves in a moving direction, a first transfer board that faces the developer-carrying surface in a second position upstream relative to the first position in the moving direction and transfers the developer to the second position in a direction opposite to the moving direction in the second position, an electrification member facing the developer-carrying surface in a third position downstream relative to the second position and upstream relative to the first position in the moving direction, and a second transfer board that faces the developer-carrying surface in a fourth position downstream relative to the first position and upstream relative to the second position in the moving direction and transfers the developer to a developer storage section in a direction identical to the moving direction in the fourth position. | 09-29-2011 |
20110293335 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes a developer retrieving member disposed to face a developer holding surface of a developer holding member across a predetermined distance in a position downstream relative to a developer supply position where the developer holding member faces an intended device to be supplied with development agent in a direction perpendicular to a main scanning direction parallel to an axial direction of the developer holding member. The developer retrieving member is driven to rotate around an axis parallel to the main scanning direction and configured to retrieve the development agent from the developer holding surface under a retrieving electric field that is generated when a retrieving voltage is applied between the developer retrieving member and the developer holding member. | 12-01-2011 |
20120076552 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device configured to supply charged development agent to an intended device, includes a carrying assist member disposed, apart from a developer transfer path, to face a developer carrying surface of a developer carrying member at an upstream side relative to a developer carrying position, in which a transfer board is opposite and in closest proximity to the developer carrying surface, in a direction in which the developer carrying surface moves when the developer carrying member is driven to rotate. The carrying assist member is configured to, when a predetermined voltage is applied thereto, generate an electric field, under which the charged development agent heads for the developer carrying surface, between the carrying assist member and the developer carrying member. | 03-29-2012 |
Patent application number | Description | Published |
20090237277 | KEYBOARD DEVICE AND METHOD OF IDENTIFYING A KEY OPERATION - A keyboard device includes multiple key switches, a scan memory that temporarily stores a result obtained by scanning keyboard as scan data, a confirmed data memory that stores a confirmed key input, a first determination mechanism that determines whether the scan data stored in the scan memory indicates that multiple keys on a single scan line are on, a readout mechanism that reads out a data of a scan line immediately preceding the scan line that is currently scanned from the data memory, a second determination mechanism that compares the data stored in the scan memory with the readout data from the readout mechanism and determines whether a single detection line includes two keys that are on, and a key confirmation mechanism that determines a current sneak when the second mechanism detects that the single scan line includes two key switches that are on and confirms the key input. | 09-24-2009 |
20110018500 | CHARGING DEVICE, ELECTRONIC EQUIPMENT INCLUDING SAME, AND CONTROL METHOD OF CHARGING DEVICE - A charging device to charge a secondary battery that includes a DC/DC circuit to generate a charging current supplied to the secondary battery, an impedance measurement circuit to measure an impedance of the secondary battery, a first control circuit to output a duty-cycle decrease signal in accordance with the measured impedance, a charging-current monitor circuit to detect the charging current outputted from the DC/DC circuit when the duty cycle of the pulses generated by the DC/DC circuit is decreased by the duty-cycle decrease signal, and, a second control circuit to compare the charging current detected by the charging-current monitor circuit and a charging-current threshold and to output to the DC/DC circuit a frequency change signal that increases a switching operation frequency in the DC/DC circuit. | 01-27-2011 |
20130038128 | ELECTRONIC CIRCUIT AND MOBILE TERMINAL DEVICE USING THE SAME - An electronic circuit includes a first digital circuit, a second digital circuit, a first detection part to detect a first voltage value which is an operation voltage of the first digital circuit, a second detection part to detect a second voltage value which is an operation voltage of the second digital circuit, a comparison part to compare the first voltage value and the second voltage value, and a connection/disconnection part to perform connection and disconnection between the first digital circuit and the second digital circuit depending on a comparison result acquired by the comparison part. | 02-14-2013 |
Patent application number | Description | Published |
20120201576 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes a casing including a developer storage section at a bottom portion therein and an opening formed at an end thereof away from the developer storage section, development agent chargeable with a predetermined polarity, stored in the developer storage section, and a transfer board that is disposed in the casing and configured to transfer the development agent stored in the developer storage section when a multi-phase alternating-current voltage is applied to transfer electrodes of the transfer board. The development agent includes a mother particle having, around an outer surface thereof, an electrically insulating layer without a polar group having a charge polarity identical to the predetermined polarity, and an external additive, absorbed to around the mother particle in an easily desorbable manner, which is an electrically insulating fine particle having a charge polarity identical to the predetermined polarity. | 08-09-2012 |
20120219332 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device configured to supply charged development agent to an intended device is provided, the developer supply device including a developer storage section storing the development agent, an electric-field transfer board that includes transfer electrodes arranged along a developer transfer path in parallel with each other, and transfers the development agent stored in the developer storage section along the developer transfer path when the transfer electrodes are supplied with a multi-phase alternating-current voltage, and a brush roller that is disposed to face the intended device in a predetermined developer supply position and face the electric-field transfer board in a predetermined developer carrying position, and configured to receive the development agent from the electric-field transfer board in the predetermined developer carrying position and carry the received development agent to the predetermined developer supply position where the development agent is supplied to the intended device. | 08-30-2012 |
20130188995 | DEVELOPER SUPPLY DEVICE - A developer supply device configured to supply developer is provided. The developer supply device includes a rotatable developer carrying body configured to carry the developer, a casing configured to rotatably support the developer carrying body, and a restricting member configured to contact the developer carrying body to remove a part of the developer. The casing has a collecting side developer storage room configured to store the developer removed by the restricting member and a supplying side developer storage room configured to store the developer to be supplied to the brush layer. A supplying side developer storage level, which is a storage level of the developer in the supplying side developer storage room, is higher than a collecting side developer storage level, which is a storage level of the developer in the collecting side developer storage room. | 07-25-2013 |
Patent application number | Description | Published |
20130164024 | Developer Supplying Apparatus - A developer supplying apparatus includes a developer carrying member, a casing, and a side seal. The developer carrying member includes a roller body and a brush part having fibrous members disposed on the peripheral surface. The developer carrying member is configured to carry a developer at the brush part. The casing includes a developer storing portion configured to store the developer, and has an opening formed along a rotation axis of the developer carrying member. The casing is configured to support the developer carrying member rotatably such that the brush layer is exposed outside from the opening. The side seal is disposed in an end of the opening in a direction along the rotation axis of the developer carrying member such that the side seal protrudes toward the brush layer to press the brush layer toward the rotation axis. | 06-27-2013 |
20140308056 | Developer Supply Device Having Developer Regulation Portion to Regulate Amount of Developer on Brush Layer - In a developer supply device, a developer carrying portion has a roller main body and a brush layer having flexible fibrous members. A casing includes a developer reservoir portion therein and is formed with an opening portion. The casing rotatably supports the developer carrying portion while the brush layer is exposed to exterior at the opening portion and opposes a supply target. The developer regulation portion regulates an amount of the developer on the brush layer. The developer regulation portion includes a main part and a regulation part. The main part is fixed to the casing, has a plate portion, and extends from one end to another end in an extending direction. The regulation part is connected to the another end. The regulation part enters into the brush layer toward the central rotational axis. The prescribed rotational direction at the regulation part is substantially opposite to the extending direction. | 10-16-2014 |
20150050042 | Image Forming Apparatus - There is provided an image forming apparatus including a casing having a cover which is moved between a closed position and an open position, a process unit which is removably mounted to the casing via an opening of the casing and includes a handle, and an interlocking mechanism which moves the process unit in interlocking with a movement of the cover between the closed position and the open position to cause the process unit to locate at an internal position when the cover is located at the closed position and cause the process unit to locate at an extraction position when the cover is located at the open position. The handle is moved in interlocking with a movement of the process unit between an accommodation position when the process unit is located at the internal position and an ejection position when the process unit is located at the extraction position. | 02-19-2015 |
20150050045 | Image Forming Apparatus - An image forming apparatus includes: a process unit having a photosensitive body extending in a first direction; a first roller disposed on one side in a second direction of the process unit, which is substantially perpendicular to a vertical direction and the first direction; an exposure unit; a fixing unit disposed on the other side in the second direction of the process unit; and a second roller disposed on an upper side of the fixing unit and on the other side in the second direction of the first roller and configured to transport the recording medium passed through the fixing unit to an outside of a casing. The casing includes a guide portion configured to guide the process unit into the casing, and the exposure unit is disposed on the one side in the second direction of the process unit and the guide portion. | 02-19-2015 |
20150050059 | Image Forming Apparatus - There is provided an image forming apparatus including a casing which includes one side wall extending in a vertical direction and has a first opening; and a discharge portion which receives a recording medium having a developer image formed thereon, and a cassette which accommodates recording media and is removably mounted to the casing. The casing further includes a tray which is disposed near the one side wall and receives a recording medium to be transported into the casing through the first opening. The tray is rotatable between a first position where the tray is bent so as to cover at least part of the one side wall and the discharge portion and a second position where the tray extends so as to be separated from the one side wall and receives a recording medium to be supplied into the casing through the first opening. | 02-19-2015 |
20150086248 | Developing Device Having Communication Portion and Conveying Member to Convey Developing Agent - A developing device includes a housing, a developing roller, a supply roller, a first regulating member, a second regulating member, a communication portion, and a conveying member. The second regulating member contacts with the supply roller. The housing has a first part and a second part. The first part is downstream of the second regulating member in a rotating direction of the supply roller, and a second part is upstream of the second regulating member in the rotating direction. The communication portion provides communication between the first part and the second part. The conveying member is in the first part and configured to convey the developing agent in the first part to the communication portion. | 03-26-2015 |