Patent application number | Description | Published |
20080239868 | Developer Container - A developer container is provided. The developer container includes a first housing comprising an agitating member; and a second housing covering the first housing and being rotatable around the agitating member relative to the first housing. The first housing comprises a first cylinder portion that has a first opening; and a first end portion that extends substantially perpendicular to the shaft. The second housing includes a first cover member that covers a part of the first housing; and a second cover member that is separated from the first cover member and covers a remaining part of the first housing. The first cover member includes a first cover cylinder portion that has a second opening corresponding to the first opening; and a first cover end portion provided at each end. The second cover member includes a second cover cylinder portion; and a second cover end portion provided at each end. | 10-02-2008 |
20080267658 | TONER CARTRIDGE AND DEVELOPING APPARATUS - A toner cartridge is described. The toner cartridge may include: a first frame storing a developing agent and having a first opening for passing the developing agent therethrough; a second frame relatively movable with respect to the first frame in a direction orthogonal to a direction of passage of the developing agent through the first opening, and opening/closing the first opening; and a seal member provided on either one of the first frame and the second frame for coming into contact with the other frame to prevent leakage of the developing agent from the first opening. A first edge of the seal member and an edge of the other frame, coming into contact with each other when the second frame opens/closes the first opening, intersect with each other as viewed from the direction of passage. | 10-30-2008 |
20080298838 | Image Forming Apparatus and Developing Cartridge - In a developing cartridge, the contact plate of the electrode member is disposed to contact the developing bias terminal within a plane of projection when a driven coupling part is projected in a first direction. A first axis line, which is an axis of the developing roller shaft, and a second axis line, which is an axis of the input gear, are disposed in parallel and equidistant in the front-rear direction. A part of the contact plate is disposed on the second axis line. A first line connecting an axis about which the input gear rotates and the developing roller shaft and a second line connecting the contact plate and the developing roller shaft are disposed parallel to each other. The distance between the first axis line and the second axis line equals the distance between the first axis line and the contact plate. | 12-04-2008 |
20080317501 | Developer Cartridge and Developing Device - A developer cartridge and developing device are provided. The developer cartridge is attachable to and detachable from a developing housing, the developing housing comprising a drive gear for transmitting a driving force to the developer cartridge. The developer cartridge includes a cartridge housing that is configured to accommodate developer; a first passage portion provided in the cartridge housing to allow a passage of a detection light for detecting an amount of the developer accommodated in the cartridge housing; an agitator provided in the cartridge housing and configured to agitate the developer by the driving force; a transmission gear configured to mesh with the drive gear to transmit the driving force to the agitator, the transmission gear meshing with the drive gear when the developer cartridge is installed in the developing housing; and a second passage portion provided in the transmission gear to allow the passage of the detection light. | 12-25-2008 |
20080317511 | Developer Cartridge and Method of Recycling the Developer Cartridge - A developing cartridge and method of recycling a developing cartridge are provided. The developing cartridge includes a cartridge housing that is configured to accommodate developer. The cartridge housing includes a first opening for discharging the developer from the cartridge housing; and a second opening for accommodating the developer into the cartridge housing. The developing cartridge further includes a deflector that is configured to generate a swirling flow of air in the cartridge housing. The method of recycling the developing cartridge includes injecting air into the second opening such that the air is deflected by the deflector and refilling the developing cartridge with developer. | 12-25-2008 |
20080317512 | Developer Cartridge and Developing Device - A developer cartridge and developing device are provided. The developer cartridge is attachable to and detachable from a developing housing, the developing housing supporting a developer carrier and comprising a drive gear for transmitting a driving force to the developer cartridge. The developer cartridge includes a cartridge housing that is configured to accommodate developer, an agitator that is provided in the cartridge housing and is configured to agitate the developer by the driving force, a transmission gear that is configured to mesh with the agitation gear, the transmission gear meshing with the drive gear when the developer cartridge is installed in the developing housing, and a supporting member that is configured to support the transmission gear movably with respect to the agitation gear while the transmission gear meshes with the agitation gear. | 12-25-2008 |
20090000423 | Cartridge - A cartridge includes; a first gear rotatably provided at the casing; a second gear including a toothed portion and a toothless portion; and a storing portion configured to store the second gear. The second gear includes an arm that is flexible and extends substantially along a peripheral direction of the second gear. An inner peripheral surface of the storing portion includes a bulging portion that bulges inward in a radial direction. The bulging portion has a peak portion closest to a rotation center of the second gear. The arm is deflected while the arm contacts the bulging portion. The deflection of the arm is changed from an increasing tendency to a decreasing tendency at the peak portion as a base point. The toothed portion of the second gear is separated from the first gear when the end portion of the arm has crossed over the peak portion. | 01-01-2009 |
20090087226 | Developer Cartridge, Developing Device, Process Cartridge and Image Forming Apparatus - A developer cartridge includes a housing attachable to and detachable from a developing device and accommodating developer and an agitator agitating the developer in the housing and supplying the developer to the developing device through a supply opening of the housing. The agitator includes a rotation shaft, a support plate, a delivery agitation blade supported by the support plate and passing through a position opposing the supply opening along an inner surface of the housing by rotation of the rotation shaft, an entire width of a first end portion of the delivery agitation blade being supported by a distal end portion of the support plate, and an oblique agitation blade erected from a surface of the support plate and oblique to the rotation shaft in order to move the developer in an axial direction of the rotation shaft toward the supply opening. | 04-02-2009 |
20090087227 | Developer Cartridge, Developing Device, and Process Cartridge - A developer cartridge includes a housing for accommodating developer, a rotation shaft rotatably supported by the housing and passing across an inside of the housing, a supply opening formed in a wall of the housing opposite in a diameter direction of the rotation shaft, a return opening formed in a wall of the housing at a position displaced from the supply opening in an axial direction of the rotation shaft, a first agitation blade supported by the rotation shaft and passing through a position opposite the return opening along an inner surface of the housing from an above to a below of the position opposite the return opening along with a rotation of the rotation shaft, and a second agitation blade supported by the rotation shaft and passing through a position opposite the supply opening along an inner surface of the housing. | 04-02-2009 |
20100239305 | Developer Cartridge for Image-Forming Device - A developer cartridge provided in an image-forming device has a developer side casing that includes a toner-accommodating chamber and a developing chamber; and a plate wall disposed in the developing chamber for partitioning a thickness-regulating blade from the toner-accommodating chamber. When a thickness-regulating blade scrapes excess charged toner off the developing roller, the plate wall prevents this charged toner from returning to the toner-accommodating chamber. A flexible wiper for cleaning toner detection windows is attached to an agitator for stirring toner in the toner-accommodating chamber via a fixing member. The fixing member includes a support plate and a gripping plate disposed opposite each other with a slit formed therebetween. The wiper is inserted into the slit and is fixed to the fixing member when a boss protruding from a restricting plate becomes inserted into a through-hole formed in the wiper. | 09-23-2010 |
20100296833 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 11-25-2010 |
20110150527 | DEVELOPER CARTRIDGE FOR IMAGE-FORMING DEVICE - A developer cartridge provided in an image-forming device has a developer side casing that includes a toner-accommodating chamber and a developing chamber; and a plate wall disposed in the developing chamber for partitioning a thickness-regulating blade from the toner-accommodating chamber. When a thickness-regulating blade scrapes excess charged toner off the developing roller, the plate wall prevents this charged toner from returning to the toner-accommodating chamber. A flexible wiper for cleaning toner detection windows is attached to an agitator for stirring toner in the toner-accommodating chamber via a fixing member. The fixing member includes a support plate and a gripping plate disposed opposite each other with a slit formed therebetween. The wiper is inserted into the slit and is fixed to the fixing member when a boss protruding from a restricting plate becomes inserted into a through-hole formed in the wiper. | 06-23-2011 |
20110158682 | PROCESS CARTRIDGE, DEVELOPING CARTRIDGE AND IMAGE FORMING APPARATUS - A developing cartridge includes: a housing that rotatably supports a developing roller; and a plurality of conveyance guide members, which are arranged along an axial direction of the developing roller and parallel to each other on an outer side of the housing, and which guide a recording medium along a conveyance path. The conveyance guide members include: conveyance ribs extend in a conveyance direction of the recording medium orthogonal to the axial direction of the developing roller so as to protrude from the housing toward the conveyance path of the recording medium; and end ribs, which are provided at both end portions in the axial direction of the developing roller, which are inclined outward with respect to the axial direction of the developing roller toward a downstream side in the conveyance direction, and which protrude further from the housing into the conveyance path side than the conveyance ribs. | 06-30-2011 |
20110158685 | DEVELOPING CARTRIDGE - A developing cartridge includes: a housing including a developing chamber and a developer accommodating chamber; a developing roller including a developing roller shaft; a supply roller including a supply roller shaft; a developing electrode, which is provided on an outer side of one sidewall of the housing, which is electrically connected to the developing roller shaft, and which includes a developing protrusion protruding parallel to the developing roller shaft at a position different from the developing roller shaft; and a supply electrode, which is provided on the outer side of the one sidewall, which is electrically connected to the supply roller shaft, and which includes a supply protrusion protruding parallel to the supply roller shaft at a position different from the supply roller shaft. The developing protrusion and the supply protrusion are arranged in an arrangement direction of the developing chamber and the developer accommodating chamber. | 06-30-2011 |
20110158704 | DEVELOPING CARTRIDGE - A developing cartridge includes: a developing roller that is rotatable about a developing roller axis line, which extends in a predetermined direction; a supply roller, which is rotatable about a supply roller axis line, which extends in the predetermined direction, and which supplies developer to the developing roller; a developing roller driving gear that is connected to the developing roller; a supply roller driving gear that is connected to the supply roller; and a driving force transmission gear, which is rotatable about a gear axis line extending in the predetermined direction, and which includes: a first gear part meshed with the developing roller driving gear; and a second gear part meshed with the supply roller driving gear. The driving force transmission gear transmits driving force to the developing roller driving gear and the supply roller driving gear. | 06-30-2011 |
20110236060 | PROCESS CARTRIDGE - A process cartridge includes: a drum cartridge; a developing cartridge, which holds a developing roller at a first end portion thereof, and which is detachably mounted to the drum cartridge; a lock member, which is provided to the drum cartridge, and which is displaceable between a lock position and a lock release position; an operation member that displaces the lock member to the lock release position; a lifting member that lifts a second end portion of the developing cartridge from the drum cartridge as the lock member is displaced to the lock release position; a developing-side holding part that extends in a direction orthogonal to the lifting direction of the second end portion from the drum cartridge; and a drum-side holding part that extends in parallel with the developing-side holding part while being opposed to the developing-side holding part in the lifting direction when the developing cartridge is mounted. | 09-29-2011 |
20110236062 | DEVELOPING CARTRIDGE - A developing cartridge is provided. The developing cartridge includes a housing which accommodates developer therein, a receiving member provided which couples with a force output member of an image forming apparatus to receive a driving force, a developing roller which rotates by the driving force received by the receiving member; a detectable rotary member having a first detectable portion and a second detectable portion and rotates by the driving force from a first rotational position where the first detectable portion is detected by a detection member provided in the image forming apparatus to a second rotational position where the second detectable portion is detected by the detection member, and a cut-off mechanism which cuts off a transmission of the driving force from the receiving member to the detectable rotary member in a state where the detectable rotary member is positioned in the second rational position. | 09-29-2011 |
20110236065 | DEVELOPING CARTRIDGE - A developing cartridge includes a receiving member which receives a driving force from outside; a first rotary member which rotates by the driving force; a second rotary member which takes a driven position where the second rotary member rotates by the driving force from the first rotary member and a non-driven position where transmission of the driving force from the first rotary member is cut off; a detectable member which moves as the rotation of the second rotary member, and a first portion which rotates by the driving force. The second rotary member includes a second portion. When the second rotary member is in the non-driven position, the second portion is provided on a rotating locus drawn by the first portion. The first portion engages with the second portion as the first portion rotates, so that the second rotary member rotates from the non-driven position to the driven position. | 09-29-2011 |
20110236066 | DEVELOPING CARTRIDGE - A developing cartridge is provided. The developing cartridge includes a housing which accommodates developer therein, a receiving member which receives a driving force output member provided in an image forming apparatus, a developing roller which rotates by the driving force received by the receiving member, and a detectable rotary member including a detectable portion, which is a detection target to be detected by a detection member provided in the image forming apparatus, and a contact portion which is provided away from the detectable portion. The detectable rotary member rotates from a retreat position to an initial position where the detectable rotary member is rotated by the driving force received by the receiving member, by the contact portion contacting an interference member fixed in the image forming apparatus in a process of mounting the developing cartridge into the image forming apparatus. | 09-29-2011 |
20110299875 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 12-08-2011 |
20110311270 | Drum Unit - A drum unit is provided. The drum unit includes a frame, a photosensitive drum that is rotatably supported by the frame, a contact member that is held to the frame and that contacts a circumferential surface of the photosensitive drum. The circumferential surface of the photosensitive drum has an image forming area on which an electrostatic latent image is formed and a non-image forming area that is adjacent to the image forming area. The contact member is in surface-contact with the non-image forming area and is not contacting with the image forming area. | 12-22-2011 |
20120251187 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 10-04-2012 |
20130287425 | Developer Cartridge - A developer cartridge includes a case, a developer carrying member, a developer supplying member, a cap, an electrode, and a fixing member. The case has a first side wall formed with a toner fill-hole and a second side wall facing the first side wall in a particular direction. The cap is configured to seal the toner fill-hole. The electrode is configured to supply a bias voltage to at least one of the developer carrying member and the developer supplying member. The fixing member is configured to fix the electrode to the cap such that the electrode is disposed in superposed relation to the cap in the particular direction. | 10-31-2013 |
20140037319 | DEVELOPING CARTRIDGE - A developing cartridge includes: a housing including a developing chamber and a developer accommodating chamber; a developing roller including a developing roller shaft; a supply roller including a supply roller shaft; a developing electrode, which is provided on an outer side of one sidewall of the housing, which is electrically connected to the developing roller shaft, and which includes a developing protrusion protruding parallel to the developing roller shaft at a position different from the developing roller shaft; and a supply electrode, which is provided on the outer side of the one sidewall, which is electrically connected to the supply roller shaft, and which includes a supply protrusion protruding parallel to the supply roller shaft at a position different from the supply roller shaft. The developing protrusion and the supply protrusion are arranged in an arrangement direction of the developing chamber and the developer accommodating chamber. | 02-06-2014 |
20140037334 | DEVELOPING CARTRIDGE - A developing cartridge is provided. The developing cartridge includes a housing which accommodates developer therein, a receiving member provided which couples with a force output member of an image forming apparatus to receive a driving force, a developing roller which rotates by the driving force received by the receiving member; a detectable rotary member having a first detectable portion and a second detectable portion and rotates by the driving force from a first rotational position where the first detectable portion is detected by a detection member provided in the image forming apparatus to a second rotational position where the second detectable portion is detected by the detection member, and a cut-off mechanism which cuts off a transmission of the driving force from the receiving member to the detectable rotary member in a state where the detectable rotary member is positioned in the second rational position. | 02-06-2014 |
20140044453 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 02-13-2014 |
20140044454 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 02-13-2014 |
20140044455 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 02-13-2014 |
20140050508 | Image Forming Apparatus and Developing Cartridge - A developing cartridge includes a case having a first sidewall and a second sidewall opposite to the first sidewall, and a developing roller disposed between the first sidewall and second sidewall. The developing roller can include a developing roller shaft and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft. Also, the developing cartridge can include an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member, and a driven coupling disposed on the second sidewall. The electrode can include, an extending portion extending in a direction away from the first sidewall. An outermost periphery of the driven coupling defines a projection plane projecting in a direction towards the electrode, wherein at least a part of the extending portion is disposed within the projection plane. | 02-20-2014 |
20140153973 | DEVELOPING CARTRIDGE - A developing cartridge includes: a developing roller that is rotatable about a developing roller axis line, which extends in a predetermined direction; a supply roller, which is rotatable about a supply roller axis line, which extends in the predetermined direction, and which supplies developer to the developing roller; a developing roller driving gear that is connected to the developing roller; a supply roller driving gear that is connected to the supply roller; and a driving force transmission gear, which is rotatable about a gear axis line extending in the predetermined direction, and which includes: a first gear part meshed with the developing roller driving gear; and a second gear part meshed with the supply roller driving gear. The driving force transmission gear transmits driving force to the developing roller driving gear and the supply roller driving gear. | 06-05-2014 |
20140212172 | DEVELOPING CARTRIDGE - A developing cartridge includes a receiving member which receives a driving force from outside; a first rotary member which rotates by the driving force; a second rotary member which takes a driven position where the second rotary member rotates by the driving force from the first rotary member and a non-driven position where transmission of the driving force from the first rotary member is cut off; a detectable member which moves as the rotation of the second rotary member, and a first portion which rotates by the driving force. The second rotary member includes a second portion. When the second rotary member is in the non-driven position, the second portion is provided on a rotating locus drawn by the first portion. The first portion engages with the second portion as the first portion rotates, so that the second rotary member rotates from the non-driven position to the driven position. | 07-31-2014 |
20140241756 | DETECTING A DEVELOPING CARTRIDGE - A developing cartridge is provided. The developing cartridge includes a housing which accommodates developer therein, a receiving member which receives a driving force output member provided in an image forming apparatus, a developing roller which rotates by the driving force received by the receiving member, and a detectable rotary member including a detectable portion, which is a detection target to be detected by a detection member provided in the image forming apparatus, and a contact portion which is provided away from the detectable portion. The detectable rotary member rotates from a retreat position to an initial position where the detectable rotary member is rotated by the driving force received by the receiving member, by the contact portion contacting an interference member fixed in the image forming apparatus in a process of mounting the developing cartridge into the image forming apparatus. | 08-28-2014 |
20150055986 | Developing Cartridge - A developing cartridge may include a housing configured to hold toner. The cartridge may further include a developing roller including a developing roller shaft, a supply roller including a supply roller shaft, a developing electrode and a supply electrode. The developing electrode and supply electrode may be configured to guide an electrical contact of an image forming apparatus in one or more directions. In some examples, the developing electrode and supply electrode may have angled surfaces that extend toward one another. | 02-26-2015 |