JP2022084803A - Developing cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a developing cartridge that does not require driving forces from both sides and is movable by a driving force received from one side.

SOLUTION: A developing cartridge 1 comprises: a housing 10 that can store developer; a developing roller 30 that is rotatable about a first axis extending in a first direction, in which one side of a peripheral surface of the developing roller 30 in a second direction is exposed to the outside of the housing 10, and the other side of the peripheral surface of the developing roller 30 in the second direction is located inside the housing 10; a shaft 61 that extends in the first direction, is movable with respect to the housing 10 and the developing roller 30 in the first direction, and is movable with the housing 10 and the developing roller 30 in the second direction; and a first inclined surface 621 that is located at one end of the shaft 61 and movable with the shaft 61, the first inclined surface 621 inclined with respect to the first direction, the first inclined surface 621 in which the distance from the shaft toward the outside in a radial direction of the shaft becomes longer from one end toward the other end.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present disclosure relates to a developing cartridge.

Conventionally, electrophotographic image forming devices such as laser printers and LED printers are known. A developing cartridge is used in the image forming apparatus. The developing cartridge has a developing roller for supplying toner. The conventional image forming apparatus is described in, for example, Patent Documents 1 and 2. The image forming apparatus of Patent Document 1 has a drawer unit. The drawer unit has a photoconductor drum. The developing cartridge is attached to the drawer unit. When the developing cartridge is attached to the drawer unit, the photoconductor drum and the developing roller come into contact with each other.

Further, the developing cartridge of Patent Document 2 is attached to the drum cartridge. The drum cartridge has a photoconductor drum. When the developing cartridge is attached to the drum cartridge, the photoconductor drum and the developing roller come into contact with each other. Then, the drum cartridge to which the developing cartridge is attached is attached to the image forming apparatus.

Japanese Unexamined Patent Publication No. 2011-59510 Japanese Unexamined Patent Publication No. 2013-54058

In the image forming apparatus of Patent Documents 1 and 2, the state where the developing roller and the photoconductor drum are in contact with each other and the state where the developing roller and the photoconductor drum are separated from each other are switched. In Patent Documents 1 and 2, parts for moving the developing cartridge in order to separate the developing roller and the photoconductor drum are provided on both sides of the drawer unit or the drum cartridge, and each of the parts on both sides is provided from the image forming apparatus. It is necessary to receive the driving force of.

An object of the present disclosure is to provide a developing cartridge that does not require driving force on both sides and can be moved by the driving force received from one side.

In order to solve the above problems, the developing cartridge of the first disclosure of the present application is a housing capable of accommodating a developing agent and a developing roller that is rotatable about a first axis extending in the first direction, and has a second direction. One side of the peripheral surface of the developing roller is exposed to the outside of the housing, and the other side of the peripheral surface of the developing roller in the second direction is in the first direction with the developing roller located inside the housing. A shaft along an extending second axis that is movable with respect to the housing and the developing roller in the first direction and with the housing and the developing roller in the second direction. A shaft and a first inclined surface that is located at one end of the shaft in the first direction and can move together with the shaft, and is inclined from the one end in the first inclined surface that is inclined with respect to the first direction. The distance between the shaft and the first inclined surface in the second direction toward the other end, that is, the distance between the shaft and the first inclined surface toward the outside in the radial direction of the shaft. It is provided with a long first inclined surface.

The second disclosure is the developing cartridge of the first disclosure, wherein the first inclined surface is inclined at an acute angle with respect to the first direction.

The third disclosure is the developing cartridge of the first disclosure or the second disclosure, wherein the first inclined surface is located on the peripheral surface of the shaft.

The fourth disclosure is a developing cartridge according to any one of the first to third disclosures, wherein the first inclined surface is inclined with respect to the shaft.

The fifth disclosure is any one of the first to fourth disclosures of the developing cartridge, wherein the first inclined surface is located on one side of the shaft in the second direction.

The sixth disclosure is the developing cartridge of the fifth disclosure, wherein one side of the shaft in the second direction is closer to the developing roller than the other side of the shaft.

The seventh disclosure is the developing cartridge of the first disclosure to the sixth disclosure, in which the angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The eighth disclosure is the developing cartridge of the first disclosure to the sixth disclosure, wherein the first inclined surface has a first slope and a second slope arranged in the first direction, and the first slope is said. The slope is arranged at a position farther from the other end of the shaft than the second slope in the first direction, and the inclination angle of the first slope with respect to the first direction is the second with respect to the first direction. Greater than the slope angle.

The ninth disclosure is the developing cartridge of the eighth disclosure, in which the angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the second slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The tenth disclosure is a second tilt of the developing cartridge of any one of the first to ninth disclosures, located at the other end of the shaft in the first direction and movable with the shaft. In the second inclined surface which is a surface and is inclined with respect to the one direction, the distance from the shaft toward the outside in the radial direction of the shaft increases as the one end portion toward the other end portion. A second inclined surface is provided.

The eleventh disclosure is the developing cartridge of the tenth disclosure, in which the second inclined surface is inclined at an acute angle with respect to the first direction.

The twelfth disclosure is the developing cartridge of the tenth disclosure or the eleventh disclosure, in which the second inclined surface is located on the peripheral surface of the shaft.

The thirteenth disclosure is a developing cartridge according to any one of the tenth to the twelfth disclosures, in which the second inclined surface is inclined with respect to the shaft.

The fourteenth disclosure is a developing cartridge of any one of the tenth to thirteenth disclosures, wherein the second inclined surface is located on one side of the shaft in the second direction.

A fifteenth disclosure is the developing cartridge of the fourteenth disclosure, wherein one side of the shaft in the second direction is closer to the developing roller than the other side of the shaft.

The sixteenth disclosure is the developing cartridge of the tenth to the fifteenth disclosure, in which the angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The seventeenth disclosure is the development cartridge of the tenth to the fifteenth disclosure, wherein the second inclined surface has a third slope and a fourth slope arranged in the first direction, and the third is said. The slope is arranged at a position closer to the first slope than the fourth slope in the first direction, and the inclination angle of the third slope with respect to the first direction is the fourth slope with respect to the first direction. Greater than the tilt angle of.

The eighteenth disclosure is the development cartridge of the seventeenth disclosure, in which the angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the fourth slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The nineteenth disclosure is a developing cartridge of any one of the first to the eighteenth disclosures, wherein the second direction intersects the peripheral surface of the developing roller exposed to the outside of the housing. The direction.

The twentieth disclosure is any one of the development cartridges of the first to the nineteenth disclosures, wherein the shaft is non-rotatable with respect to the housing with respect to the second axis.

The 21st disclosure is a developing cartridge according to any one of the 1st to 19th disclosures, wherein the shaft is rotatable with respect to the housing with respect to the 2nd axis, and the 1st disclosure is made. The inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.

The 22nd disclosure is a developing cartridge according to any one of the 10th to 18th disclosures, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the second disclosure. The inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.

The 23rd disclosure is a developing cartridge according to any one of the first disclosure to the 22nd disclosure, wherein the housing is a container capable of accommodating a developing agent and a lid covering the container. It has a lid having a through hole penetrating in the first direction, and the shaft is inserted into the through hole.

The twenty-fourth disclosure is any one of the development cartridges from the first disclosure to the twenty-third disclosure, which is used for the drum cartridge, and the shaft is the first position and the first position in the first direction. It is movable with respect to the housing between the two positions, and the housing is said to the drum cartridge when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft.

The 25th disclosure is any one of the development cartridges from the first disclosure to the 24th disclosure, which is used for a drum cartridge including a photoconductor drum, and the shaft is in the first direction. It is movable with respect to the housing between the first position and the second position, and the housing is photosensitive when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft with respect to the body drum.

The 26th disclosure is the development cartridge of the 25th disclosure, in which the first inclined surface contacts a part of the drum cartridge when the shaft moves from the first position to the second position. When the first inclined surface slides with respect to the part of the drum cartridge, the housing and the developing roller move in the second direction.

The 27th disclosure is a developing cartridge according to any one of the 10th to 18th disclosures, which is used for a drum cartridge including a photoconductor drum, and the shaft is in the first direction. It is movable with respect to the housing between the first position and the second position, and the housing is photosensitive when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft with respect to the body drum, and the first inclined surface becomes the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position. The second inclined surface comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position, and the housing and the housing and the second inclined surface come into contact with each other. When the first inclined surface slides with respect to the first receiving surface and the second inclined surface slides with respect to the second receiving surface, the developing roller moves in the second direction.

The 28th disclosure is a developing cartridge of any one of the 10th to 18th disclosures and the 27th disclosure, wherein the shaft has the second inclined surface in the first direction. When a pressing force is received from the other end of the head toward the one end, the shaft moves from the first position to the second position.

The 29th disclosure is the developing cartridge of the 28th disclosure, which is an elastic member that can be expanded and contracted in the first direction, and one end of the elastic member in the first direction is connected to the first inclined surface. Further includes an elastic member in which the other end of the elastic member in the first direction is connected to the housing.

The thirtieth disclosure is the developed cartridge of the 29th disclosure, wherein the elastic member is a coil spring, and the first length is between a first length and a second length shorter than the first length. It is telescopic in one direction and has the first length when the shaft is in the first position, the second length when the shaft is in the second position, and the shaft is the coil. When the spring has the first length, it is located at the second position, and when the coil spring has the second length, it is located at the first position.

The thirty-first disclosure is a developing cartridge according to any one of the first disclosure to the thirtieth disclosure, and the housing has a first outer surface and a second outer surface separated from each other in the first direction. The first outer surface is located at one end of the housing in the first direction, the second outer surface is located at the other end of the housing in the first direction, and the first inclined surface is located. Is located on the first outer surface and separates from the developing roller in the second direction as it goes away from the first outer surface in the first direction.

The 32nd disclosure is the development cartridge of the 31st disclosure, which is a coupling for rotating the development roller, further comprising a coupling arranged on the second outer surface.

The 33rd disclosure is the developing cartridge of the 32nd disclosure, in which the coupling is arranged in the second direction closer to the developing roller than the shaft and the first inclined surface.

The 34th disclosure is the development cartridge of the 32nd disclosure or the 33rd disclosure, in which the coupling receives a driving force and the shaft is directed from the second outer surface toward the first outer surface. Receives pressing pressure.

The 35th disclosure is a developing cartridge according to any one of the 31st to 34th disclosures, which is an electrode electrically connected to the developing roller and is an electrode located on the first outer surface. , Further prepare.

The 36th disclosure is the developing cartridge of the 35th disclosure, in which the electrode is arranged in the second direction closer to the developing roller than the shaft and the first inclined surface.

The 37th disclosure is an agitator, which is any one of the development cartridges of the first disclosure to the thirty-six, is rotatable about a third axis extending in the first direction, and agitates the developer. Further, the developing roller is separated from the agitator in the second direction.

The 38th disclosure is the developing cartridge of the 37th disclosure, in which the agitator is arranged at a position closer to the developing roller than the shaft in the second direction.

The 39th disclosure is a housing capable of accommodating a developer and a developing roller that is rotatable about a first axis extending in the first direction, and one side of the peripheral surface of the developing roller in the second direction is the housing. The other side of the peripheral surface of the developing roller exposed to the outside of the housing is the developing roller located inside the housing and the shaft along the second axis extending in the first direction. A shaft that is movable with respect to the housing and the developing roller in the first direction and is movable together with the housing and the developing roller in the second direction, and one end of the shaft in the first direction. A first inclined surface that is located at and is movable together with the shaft, and is inclined with respect to the first direction. It is provided with a first inclined surface that extends outward.

The 40th disclosure is the developing cartridge of the 39th disclosure, in which the first inclined surface is inclined at an acute angle with respect to the first direction.

The 41st disclosure is the developing cartridge of the 39th disclosure or the 40th disclosure, in which the first inclined surface is located on the peripheral surface of the shaft.

The 42nd disclosure is a developing cartridge according to any one of the 39th to 41st disclosures, in which the first inclined surface is inclined with respect to the shaft.

The 43rd disclosure is a developing cartridge of any one of the 39th to the 42nd disclosures, wherein the first inclined surface is located on one side of the shaft in the second direction.

The 44th disclosure is the developing cartridge of the 43rd disclosure, wherein one side of the shaft in the second direction is closer to the developing roller than the other side of the shaft.

The 45th disclosure is the developing cartridge of the 39th to the 44th disclosure, and the angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The 46th disclosure is the developing cartridge of the 39th to the 44th disclosure, wherein the first inclined surface has a first slope and a second slope arranged in the first direction, and the first slope is said. The slope is arranged at a position farther from the other end of the shaft than the second slope in the first direction, and the inclination angle of the first slope with respect to the first direction is the second with respect to the first direction. Greater than the slope angle.

The 47th disclosure is the development cartridge of the 46th disclosure, in which the angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the second slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The 48th disclosure is a development cartridge of any one of the 39th to 47th disclosures, which is a second tilt located at the other end of the shaft in the first direction and movable with the shaft. A second inclined surface that is inclined with respect to the first direction and includes a second inclined surface that extends outward in the radial direction of the shaft from one end to the other end. ..

The 49th disclosure is the developing cartridge of the 48th disclosure, in which the second inclined surface is inclined at an acute angle with respect to the first direction.

The 50th disclosure is the developing cartridge of the 48th disclosure or the 49th disclosure, in which the second inclined surface is located on the peripheral surface of the shaft.

The 51st disclosure is a developing cartridge of any one of the 48th to the 50th disclosures, wherein the second inclined surface is inclined with respect to the shaft.

The 52nd disclosure is a developing cartridge according to any one of the 48th to 51st disclosures, wherein the second inclined surface is located on one side of the shaft in the second direction.

The 53rd disclosure is a developing cartridge according to any one of the 48th to 52nd disclosures, wherein one side of the shaft in the second direction is more than the other side of the shaft. Located near.

The 54th disclosure is the developing cartridge of the 48th to 53rd disclosures, in which the angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The 55th disclosure is the development cartridge of the 48th to 53rd disclosures, wherein the second inclined surface has a third slope and a fourth slope arranged in the first direction, and the third slope is said. The slope is arranged at a position closer to the first slope than the fourth slope in the first direction, and the inclination angle of the third slope with respect to the first direction is the fourth slope with respect to the first direction. Greater than the tilt angle of.

The 56th disclosure is the development cartridge of the 55th disclosure, in which the angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the fourth slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The 57th disclosure is a developing cartridge according to any one of the 39th to 56th disclosures, in which the second direction intersects the peripheral surface of the developing roller exposed to the outside of the housing. Is.

The 58th disclosure is a developing cartridge according to any one of the 39th to 57th disclosures, wherein the shaft is non-rotatable with respect to the housing with respect to the second axis.

The 59th disclosure is a developing cartridge according to any one of the 39th to 57th disclosures, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the first. The inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.

The 60th disclosure is a developing cartridge according to any one of the 48th to 56th disclosures, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the second. The inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.

The 61st disclosure is a developing cartridge according to any one of the 39th to 60th disclosures, wherein the housing is a container capable of containing a developing agent and a lid covering the container. It has a lid having a through hole penetrating in the first direction, and the shaft is inserted into the through hole.

The 62nd disclosure is any one of the development cartridges of the 39th to the 61st disclosures, which is used for the drum cartridge, and the shaft is the first position and the first position in the first direction. It is movable with respect to the housing between the two positions, and the housing is relative to the photoconductor drum when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft.

The 63rd disclosure is a developing cartridge according to any one of the 39th to 62nd disclosures, which is used for a drum cartridge including a photoconductor drum, and the shaft is in the first direction. It is movable with respect to the housing between the first position and the second position, and the housing is photosensitive when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft with respect to the body drum.

The 64th disclosure is the developing cartridge of the 63rd disclosure, in which the first inclined surface contacts a part of the drum cartridge when the shaft moves from the first position to the second position. When the first inclined surface slides with respect to the part of the drum cartridge, the housing and the developing roller move in the second direction.

The 65th disclosure is a developing cartridge according to any one of the 48th to 56th disclosures, which is used for a drum cartridge including a photoconductor drum, and the shaft is in the first direction. It is movable with respect to the housing between the first position and the second position, and the housing is photosensitive when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft with respect to the body drum, and the first inclined surface becomes the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position. The second inclined surface comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position, and the housing and the housing and the second inclined surface come into contact with each other. When the first inclined surface slides with respect to the first receiving surface and the second inclined surface slides with respect to the second receiving surface, the developing roller moves in the second direction.

The 66th disclosure is a developing cartridge of any one of the 48th to 56th disclosures and the 65th disclosure, wherein the shaft has the second inclined surface in the first direction. When a pressing force is received from the other end of the head toward the one end, the shaft moves from the first position to the second position.

The 67th disclosure is the developing cartridge of the 66th disclosure, which is an elastic member that can be expanded and contracted in the first direction, and one end of the elastic member in the first direction is connected to the first inclined surface. Further includes an elastic member in which the other end of the elastic member in the first direction is connected to the housing.

The 68th disclosure is the developed cartridge of the 67th disclosure, wherein the elastic member is a coil spring, the first length and the second length shorter than the first length. It is telescopic in one direction and has the first length when the shaft is in the first position, the second length when the shaft is in the second position, and the shaft is the coil. When the spring has the first length, it is located at the second position, and when the coil spring has the second length, it is located at the first position.

The 69th disclosure is a developing cartridge according to any one of the 39th to 68th disclosures, and the housing has a first outer surface and a second outer surface separated from each other in the first direction. The first outer surface is located at one end of the housing in the first direction, the second outer surface is located at the other end of the housing in the first direction, and the first inclined surface is located. Is located on the first outer surface and separates from the developing roller in the second direction as it goes away from the first outer surface in the first direction.

The 70th disclosure is the development cartridge of the 69th disclosure, which is a coupling for rotating the development roller, further comprising a coupling arranged on the second outer surface.

The 71st disclosure is the developing cartridge of the 70th disclosure, in which the coupling is arranged in the second direction closer to the developing roller than the shaft and the first inclined surface.

The 72nd disclosure is the development cartridge of the 70th disclosure or the 71st disclosure, in which the coupling receives a driving force and the shaft is directed from the second outer surface toward the first outer surface. Receives pressing pressure.

The 73rd disclosure is a developing cartridge according to any one of the 70th to 72nd disclosures, which is an electrode electrically connected to the developing roller and is an electrode located on the first outer surface. , Further prepare.

The 74th disclosure is the developing cartridge of the 73rd disclosure, in which the electrode is arranged in the second direction closer to the developing roller than the shaft and the first inclined surface.

The 75th disclosure is an agitator, which is any one of the development cartridges of the 39th to the 74th disclosures, which is rotatable about a third axis extending in the first direction and agitates the developer. Further, the developing roller is separated from the agitator in the second direction.

The 76th disclosure is the development cartridge of the 75th disclosure, in which the agitator is arranged at a position closer to the developing roller than the shaft in the second direction.

The 77th disclosure is a housing capable of accommodating a developer and a developing roller that is rotatable about a first axis extending in the first direction, and one side of the peripheral surface of the developing roller in the second direction is the housing. The other side of the peripheral surface of the developing roller exposed to the outside of the body in the second direction is the developing roller located inside the housing and the shaft along the second axis extending in the first direction. A shaft that is movable with respect to the housing and the developing roller in the first direction and is movable with the housing and the developing roller in the second direction, and one end of the shaft in the first direction. A first inclined surface that is located in a portion and is movable together with the shaft, and is inclined with respect to the first direction. It includes a first inclined surface that moves away from the developing roller in the second direction.

The 78th disclosure is the developing cartridge of the 77th disclosure, in which the first inclined surface is inclined at an acute angle with respect to the first direction.

The 79th disclosure is the development cartridge according to the 77th disclosure or the 78th, wherein the first inclined surface is located on the peripheral surface of the shaft.

The 80th disclosure is a developing cartridge according to any one of the 77th to 79th disclosures, in which the first inclined surface is inclined with respect to the shaft.

The 81st disclosure is any one of the 77th to 80th disclosures, wherein the first inclined surface is located on one side of the shaft in the second direction.

The 82nd disclosure is the developing cartridge of the 82nd disclosure, wherein one side of the shaft in the second direction is closer to the developing roller than the other side of the shaft.

The 83rd disclosure is the developing cartridge of the 77th to the 82nd disclosure, and the angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The 84th disclosure is a developing cartridge according to the 77th to the 82nd disclosure, wherein the first inclined surface has a first slope and a second slope arranged in the first direction, and the first inclined surface is described. The slope is arranged at a position farther from the other end of the shaft than the second slope in the first direction, and the inclination angle of the first slope with respect to the first direction is the second with respect to the first direction. Greater than the slope angle.

The 85th disclosure is the development cartridge of the 84th disclosure, in which the angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the second slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The 86th disclosure is a development cartridge of any one of the 77th to the 85th disclosures, which is a second tilt located at the other end of the shaft in the first direction and movable with the shaft. A second inclined surface that approaches the developing roller in the second direction as the surface moves away from the housing in the first direction in the second inclined surface that is inclined with respect to the first direction. , Further prepare.

The 87th disclosure is the developing cartridge according to the 86, in which the second inclined surface is inclined at an acute angle with respect to the first direction.

The 88th disclosure is the developing cartridge of the 86th disclosure or the 87th disclosure, in which the second inclined surface is located on the peripheral surface of the shaft.

The 89th disclosure is a developing cartridge according to any one of the 86th to 88th disclosures, in which the second inclined surface is inclined with respect to the shaft.

The 90th disclosure is a developing cartridge according to any one of the 86th to 89th disclosures, wherein the second inclined surface is located on one side of the shaft in the second direction.

The 91st disclosure is the developing cartridge of the 90th disclosure, wherein one side of the shaft in the second direction is closer to the developing roller than the other side of the shaft.

The 92nd disclosure is the developing cartridge of the 86th to the 91st disclosures, in which the angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The 93rd disclosure is the development cartridge of the 86th to 91st disclosures, wherein the second inclined surface has a third slope and a fourth slope arranged in the first direction, and the third slope is said. The slope is arranged at a position closer to the first slope than the fourth slope in the first direction, and the inclination angle of the third slope with respect to the first direction is the fourth slope with respect to the first direction. Greater than the tilt angle of.

The 94th disclosure is the development cartridge of the 93rd disclosure, in which the angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the fourth slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The 95th disclosure is a developing cartridge according to any one of the 77th to 94th disclosures, in which the second direction intersects the peripheral surface of the developing roller exposed to the outside of the housing. The direction.

The 96th disclosure is any one of the development cartridges of the 77th to the 95th disclosures, wherein the shaft is non-rotatable with respect to the housing with respect to the second axis.

The 97th disclosure is any one of the development cartridges of the 77th to 96th disclosures, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the first. The inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.

The 98th disclosure is a developing cartridge according to any one of the 86th to 94th disclosures, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the second. The inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.

The 99th disclosure is a developing cartridge according to any one of the 77th to 98th disclosures, wherein the housing is a container capable of containing a developer and a lid covering the container. It has a lid having a through hole penetrating in the first direction, and the shaft is inserted into the through hole.

The 100th disclosure is any one of the development cartridges of the 77th to the 99th disclosures, which is used for the drum cartridge, and the shaft is the first position and the first position in the first direction. It is movable with respect to the housing between the two positions, and the housing is said to the drum cartridge when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft.

The 101st disclosure is a developing cartridge according to any one of the 77th to 100th disclosures, which is used for a drum cartridge including a photoconductor drum, and the shaft is in the first direction. It is movable with respect to the housing between the first position and the second position, and the housing is photosensitive when the shaft moves from the disclosure of the first position to the second position. It moves in the second direction together with the shaft with respect to the body drum.

The 102nd disclosure is the developing cartridge of the 101st disclosure, wherein the first inclined surface contacts a part of the drum cartridge when the shaft moves from the first position to the second position. When the first inclined surface slides with respect to the part of the drum cartridge, the housing and the developing roller move in the second direction.

The 103rd disclosure is a developing cartridge according to any one of the 86th to 94th disclosures, which is used for a drum cartridge including a photoconductor drum, and the shaft is in the first direction. It is movable with respect to the housing between the first position and the second position, and the housing is photosensitive when the shaft moves from the disclosure of the first position to the second position. The first inclined surface moves in the second direction together with the shaft with respect to the body drum, and the first inclined surface is the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position. The second inclined surface comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position, and the housing. And the developing roller moves in the second direction when the first inclined surface slides with respect to the first receiving surface and the second inclined surface slides with respect to the second receiving surface.

The 104th disclosure is a developing cartridge of any one of the 86th to 94th disclosures and the 103rd disclosure, wherein the shaft has the second inclined surface in the first direction. When a pressing force is received from the other end of the head toward the one end, the shaft moves from the first position to the second position.

The 105th disclosure is the developing cartridge of the 104th disclosure, which is an elastic member that can be expanded and contracted in the first direction, and one end of the elastic member in the first direction is connected to the first inclined surface. Further includes an elastic member in which the other end of the elastic member in the first direction is connected to the housing.

The 106th disclosure is the development cartridge of the 105th disclosure, wherein the elastic member is a coil spring, the first length between the first length and the second length shorter than the first length. It is telescopic in one direction and has the first length when the shaft is in the first position, the second length when the shaft is in the second position, and the shaft is the coil. When the spring has the first length, it is located at the second position, and when the coil spring has the second length, it is located at the first position.

The 107th disclosure is a developing cartridge according to any one of the 77th disclosure to the 106th disclosure, and the housing has a first outer surface and a second outer surface separated from each other in the first direction. The first outer surface is located at one end of the housing in the first direction, the second outer surface is located at the other end of the housing in the first direction, and the first inclined surface is located. Is located on the first outer surface and separates from the developing roller in the second direction as it goes away from the first outer surface in the second direction.

The 108th disclosure is the development cartridge of the 107th disclosure, which is a coupling for rotating the development roller, further comprising a coupling arranged on the second outer surface.

The 109th disclosure is the developing cartridge of the 108th disclosure, wherein the coupling is arranged in the second direction closer to the developing roller than the shaft and the first inclined surface.

The 110th disclosure is the development cartridge of the 108th disclosure or the 109th disclosure, in which the coupling receives a driving force and the shaft is directed from the second outer surface toward the first outer surface. Receives pressing pressure.

The 111th disclosure is a developing cartridge which is any one of the 107th to 110th disclosures, is an electrode electrically connected to the developing roller, and is an electrode located on the first outer surface. , Further prepare.

The 112th disclosure is the developing cartridge of the 111th disclosure, wherein the electrode is arranged in the second direction closer to the developing roller than the shaft and the first inclined surface.

The 113th disclosure is an agitator, which is any one of the development cartridges of the 77th to the 112th disclosures, which is rotatable about a third axis extending in the first direction and agitates the developer. Further, the developing roller is separated from the agitator in the second direction.

The 114th disclosure is the developing cartridge of the 113th disclosure, wherein the agitator is arranged at a position closer to the developing roller than the shaft in the second direction.

The 115th disclosure is a developing cartridge used for a drum cartridge including a photoconductor drum, which is a housing capable of accommodating a developing agent and a developing roller rotatable about a first axis extending in the first direction. One side of the peripheral surface of the developing roller in the second direction is exposed to the outside of the housing, and the other side of the peripheral surface of the developing roller in the second direction is the developing roller located inside the housing. A shaft along a second axis extending in the first direction, which is movable with respect to the housing and the developing roller in the first direction, and is movable with respect to the housing and the developing roller in the second direction. A shaft that can move with the shaft and a first cam that is provided at one end of the shaft in the first direction and can move with the shaft, and the first cam moves with the shaft in the first direction. If so, in the second direction, the shaft and the housing are moved with respect to the photoconductor drum.

The 116th disclosure is the developing cartridge of the 115th disclosure, wherein the first cam is a first inclined surface inclined with respect to the first direction, and as it goes from one end to the other. It has a first inclined surface, which increases the distance from the shaft toward the outside in the radial direction of the shaft.

The 117th disclosure is the developing cartridge of the 116th disclosure, in which the first inclined surface is inclined at an acute angle with respect to the first direction.

The 118th disclosure is the developing cartridge of the 116th disclosure or the 117th disclosure, and the angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The 119th disclosure is a developing cartridge according to the 116th disclosure or the 117th disclosure, wherein the first inclined surface has a first slope and a second slope arranged in the first direction, and the first inclined surface is described. The slope is arranged at a position farther from the other end of the shaft than the second slope in the first direction, and the inclination angle of the first slope with respect to the first direction is the second with respect to the first direction. Greater than the slope angle.

The 120th disclosure is the developing cartridge of the 119th disclosure, in which the angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the second slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The 121st disclosure is a developing cartridge according to any one of the 115th to the 120th disclosures, the second cam provided at the other end of the shaft in the axial direction and movable with the shaft. ,
When the first cam and the second cam move in the first direction together with the shaft, the shaft and the housing are moved with respect to the photoconductor drum in the second direction.

The 122nd disclosure is the development cartridge of the 121st disclosure, wherein the second cam is inclined with respect to the first direction, and the shaft is directed from the other end to the one end of the shaft. It has a second inclined surface, which shortens the distance toward the outside in the radial direction of the shaft.

The 123rd disclosure is the developing cartridge of the 122nd disclosure, in which the second inclined surface is inclined at an acute angle with respect to the first direction.

The 124th disclosure is the developing cartridge of the 122nd disclosure or the 123rd disclosure, and the angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.

The 125th disclosure is the development cartridge of the 122nd disclosure or the 123rd disclosure, wherein the second inclined surface has a third slope and a fourth slope arranged in the first direction, and the third slope is said. The slope is arranged at a position closer to the first slope than the fourth slope in the first direction, and the inclination angle of the third slope with respect to the first direction is the fourth slope with respect to the first direction. Greater than the tilt angle of.

The 126th disclosure is the development cartridge of the 125th disclosure, in which the angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less, and the angle of the fourth slope with respect to the first direction is 43 degrees or more and 47 degrees or less. The angle is 12 degrees or more and 17 degrees or less.

The 127th disclosure is a developing cartridge of any one of the 115th to the 126th disclosures, wherein the second direction intersects the peripheral surface of the developing roller exposed to the outside of the housing. The direction.

The 128th disclosure is any one of the development cartridges from the 115th disclosure to the 127th disclosure, in which the shaft is non-rotatable with respect to the housing with respect to the second axis.

The 129th disclosure is any one of the development cartridges from the 115th disclosure to the 127th disclosure, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the first. The cam is rotatable about the second axis with respect to the housing together with the shaft, and has a conical or polygonal pyramid shape with the second axis as a central axis.

The 130th disclosure is any one of the development cartridges from the 115th disclosure to the 127th disclosure, wherein the shaft is rotatable with respect to the housing with respect to the second axis, and the second. The cam is rotatable about the second axis with respect to the housing together with the shaft, and has a conical or polygonal pyramid shape with the second axis as a central axis.

The 131st disclosure is a developing cartridge according to any one of the 115th to the 130th disclosures, wherein the housing is a container capable of accommodating a developing agent and a lid covering the container. It has a lid having a through hole penetrating in the first direction, and the shaft is inserted into the through hole.

The 132nd disclosure is a developing cartridge of any one of the 115th to the 131st disclosures, wherein the shaft is located between the first position and the second position in the first direction. The housing is movable with respect to the body, and the housing moves in the second direction together with the shaft with respect to the drum cartridge when the shaft moves from the disclosure of the first position to the second position. do.

The 133rd disclosure is a developing cartridge of any one of the 115th to the 132nd disclosures, wherein the shaft is located between the first position and the second position in the first direction. The housing is movable with respect to the body, and when the shaft moves from the disclosure of the first position to the second position, the housing is moved in the second direction together with the shaft with respect to the photoconductor drum. Moving.

The 134th disclosure is the developing cartridge of the 133rd disclosure, wherein the first cam comes into contact with a part of the drum cartridge when the shaft moves from the first position to the second position. The housing and the developing roller move in the second direction when the first cam slides with respect to the part of the drum cartridge.

The 135th disclosure is a developing cartridge of any one of the 121st to the 126th disclosures, wherein the shaft is located between the first position and the second position in the first direction. The housing is movable with respect to the body, and when the shaft moves from the disclosure of the first position to the second position, the housing is in the second direction together with the shaft with respect to the photoconductor drum. The first cam moves and the first cam contacts the first receiving surface of the drum cartridge when the shaft moves from the first position to the second position, and the second cam has the shaft of the second cam. When moving from the first position to the second position, the drum cartridge comes into contact with a second receiving surface different from the first receiving surface, and the housing and the developing roller have the first cam as the first receiving surface. When the second cam slides with respect to the surface and the second cam slides with respect to the second receiving surface, it moves in the second direction.

The 136th disclosure is a developing cartridge of any one of the 121st to the 126th and 135th disclosures, wherein the shaft has the second cam in the first direction of the shaft. When a pressing force is received from the other end portion toward the one end portion, the product moves from the first position to the second position.

The 137th disclosure is the developing cartridge of the 136th disclosure, which is an elastic member that can be expanded and contracted in the first direction, and one end of the elastic member in the first direction is connected to the first inclined surface. Further includes an elastic member in which the other end of the elastic member in the first direction is connected to the housing.

The 138th disclosure is the development cartridge of the 137th disclosure, wherein the elastic member is a coil spring, the first length between the first length and the second length shorter than the first length. It is telescopic in one direction and has the first length when the shaft is in the first position, the second length when the shaft is in the second position, and the shaft is the coil. When the spring has the first length, it is located at the second position, and when the coil spring has the second length, it is located at the first position.

The 139th disclosure is a developing cartridge according to any one of the 115th disclosure to the 138th disclosure, and the housing has a first outer surface and a second outer surface separated from each other in the first direction. The first outer surface is located at one end of the housing in the first direction, the second outer surface is located at the other end of the housing in the first direction, and the first cam is located. , Located on the first outer surface and away from the developing roller in the second direction as it moves away from the first outer surface in the first direction.

The 140th disclosure is the development cartridge of the 139th disclosure, which is a coupling for rotating the development roller, further comprising a coupling arranged on the second outer surface.

The 141st disclosure is the developing cartridge of the 140th disclosure, wherein the coupling is arranged in the second direction closer to the developing roller than the shaft and the first cam.

The 142nd disclosure is the developing cartridge of the 140th disclosure or the 141st disclosure, wherein the coupling receives a driving force and the shaft is directed from the second outer surface toward the first outer surface. Receives pressing pressure.

The 143rd disclosure is a developing cartridge according to any one of the 140th to 142nd disclosures, which is an electrode electrically connected to the developing roller and is an electrode located on the first outer surface. , Further prepare.

The 144th disclosure is the developing cartridge of the 143rd disclosure, wherein the electrode is arranged in the second direction closer to the developing roller than the shaft and the first cam.

The 145th disclosure is an agitator, which is any one of the development cartridges of the 115th to 144th disclosures, which is rotatable about a third axis extending in the first direction and agitates the developer. Further, the developing roller is separated from the agitator in the second direction.

The 146th disclosure is the developing cartridge of the 145th disclosure, in which the agitator is arranged at a position closer to the developing roller than the shaft in the second direction.

According to the present disclosure, the shaft moves in the first direction with respect to the housing and the developing roller according to the driving force in the first direction. With the movement of the shaft in the first direction, when the first inclined surface comes into contact with another part, the first inclined surface moves in the second direction along the other part. As the first inclined surface moves in the second direction, the housing and the developing roller also move in the second direction. As a result, the driving force on both sides is not required, and the developing cartridge can be moved in the second direction by the driving force in the first direction. Further, since the developing cartridge includes the first inclined surface and the shaft, the shaft attaches and detaches the developing cartridge when attaching and detaching the developing cartridge to and from the drum cartridge, as compared with the case where the drum cartridge includes the shaft. It can be prevented from hindering.

According to the eighth disclosure, the 46th disclosure, the 84th disclosure, and the 119th disclosure, since the first slope first contacts another part, the shaft is initially moved in the first direction. The amount of movement in the second direction can be increased. As a result, the developing roller can be moved in the second direction with a small amount of movement of the shaft in the first direction. Further, when the second slope whose inclination angle with respect to the first direction is gentler than that of the first slope comes into contact with another component, the shaft moves in the first direction while being suppressed from moving in the second direction. This makes it possible to reduce the pressing load that presses the shaft.

According to the 17th disclosure, the 55th disclosure, the 93rd disclosure, and the 125th disclosure, since the third slope first contacts another part, the shaft is initially moved in the first direction. The amount of movement in the second direction can be increased. As a result, the developing roller can be moved in the second direction with a small amount of movement of the shaft in the first direction. Further, when the fourth slope whose inclination angle with respect to the first direction is gentler than that of the third slope comes into contact with another component, the shaft moves in the first direction while being suppressed from moving in the second direction. This makes it possible to reduce the pressing load that presses the shaft.

According to the tenth disclosure, the forty-eighth disclosure, and the 86th disclosure, the housing and the developing roller are provided with a first inclined surface at one end in the first direction and a second inclined surface at the other end. It can move stably without tilting in the second direction. Further, according to the 103rd disclosure, since the first cam is provided at one end in the first direction and the second cam is provided at the other end, the housing and the developing roller are stably not tilted in the second direction. You can move.

According to the 21st Disclosure, the 22nd Disclosure, the 59th Disclosure, the 60th Disclosure, the 97th Disclosure, the 98th Disclosure, the 129th Disclosure, and the 130th Disclosure, even if the shaft rotates. , The housing and the developing roller can be moved in the second direction.

According to the 23rd disclosure, the 61st disclosure, the 98th disclosure and the 131st disclosure, the shaft can be easily provided to the developing cartridge in order to hold the shaft on the lid.

According to the 25th Disclosure, the 27th Disclosure, the 62nd Disclosure, the 65th Disclosure, the 101st Disclosure, the 103rd Disclosure, the 133rd Disclosure and the 135th Disclosure, the shaft is moved in the first direction. By doing so, the developing roller can be separated from the photoconductor drum.

According to the 29th, 67th, 105th and 137th disclosures, the shaft is moved with respect to the housing and the developing roller in the first direction by the elastic force of the elastic member. As a result, when the driving force in the first direction is lost, the developing cartridge can be moved in the second direction by the elastic force.

According to the 34th disclosure, the 72nd disclosure, the 110th disclosure, and the 142nd disclosure, the drive source of the image forming apparatus can be aggregated in one direction in the first direction of the developing cartridge.

It is a conceptual diagram of an image forming apparatus. It is a perspective view of the development cartridge. It is a perspective view of the development cartridge. It is a top view of the development cartridge seen from the 1st direction. It is a top view of the development cartridge seen from the 1st direction. It is an exploded perspective view of a separating member. It is an enlarged view which disassembled the shaft of the separating member and the 1st cam. It is a figure for demonstrating the separating member which moves with respect to a housing and a developing roller in a 1st direction. It is a figure for demonstrating the separating member which moves with respect to a housing and a developing roller in a 1st direction. It is a top view of the development cartridge seen from the 3rd direction. It is a perspective view of a drawer. It is a top view of the drawer seen from the 3rd direction. It is a perspective view of the state which the development cartridge is attached to the slot of a drawer. FIG. 3 is a plan view of a state in which a developing cartridge is mounted in a slot of a drawer as viewed from a third direction. FIG. 3 is a plan view of a state in which a developing cartridge is mounted in a slot of a drawer as viewed from the first direction. It is a figure for demonstrating the separation operation by the separation member. It is a perspective view of the development cartridge in a contact state. It is a perspective view of the development cartridge in a separated state. It is a top view of the development cartridge of Embodiment 2 seen from the 3rd direction. It is a figure for demonstrating the separation operation by the separation member.

Hereinafter, preferred embodiments of the present disclosure will be described with reference to the drawings.

<1. Embodiment 1>
<1.1. Configuration of image forming device>
FIG. 1 is a conceptual diagram of the image forming apparatus 100. The image forming apparatus 100 is an electrophotographic printer. Examples of the image forming apparatus 100 include a laser printer or an LED printer.

The image forming apparatus 100 includes four developing cartridges 1, a drawer 2, a main body frame 101, and a control unit 102.

The developing cartridge 1 is attached to the drawer 2. The drawer 2 is a drum cartridge into which the developing cartridge 1 is mounted, and includes four slots 2A. Each of the plurality of developing cartridges 1 is mounted in the slot 2A of the drawer 2. Then, the developing cartridge 1 is mounted in the main body frame 101 in a state of being mounted in the slot 2A of the drawer 2. The four developing cartridges 1 contain developing agents (eg, toner) of different colors (eg, cyan, magenta, yellow, and black). However, the plurality of developing cartridges 1 may contain developing agents of the same color. Further, the number of the developing cartridges 1 may be 1 to 3, or 5 or more.

The image forming apparatus 100 forms an image on printing paper by the developing agents supplied from the four developing cartridges 1.

Each of the four developing cartridges 1 has an IC chip 51. The IC chip 51 is a storage medium capable of reading and writing information. Examples of the storage medium include flash ROM and EPPROM. When the developing cartridge 1 is mounted in the main body frame 101 with the developing cartridge 1 mounted in the slot 2A of the drawer 2, the IC chip 51 of each developing cartridge 1 and the control unit 102 are electrically connected to each other. The control unit 102 is composed of, for example, a circuit board. The control unit 102 has a processor such as a CPU and various types of memory. The processor of the control unit 102 executes various processes in the image forming apparatus 100 by operating according to the program.

<1.2. About developing cartridges>
2 and 3 are perspective views of the developing cartridge 1. 4 and 5 are plan views of the developing cartridge 1 as viewed from the first direction.

In the following description, the direction in which the rotation axis (first axis) of the developing roller 30 extends is referred to as a "first direction". This first direction is also the axial direction in which the drum axis of the photoconductor drum, which will be described later, of the drawer 2 extends. Further, the direction in which one side of the peripheral surface of the developing roller 30 exposed to the outside of the housing 10 and the other side of the peripheral surface of the developing roller 30 located inside the housing 10 are lined up is referred to as "second direction". Refer to. The second direction is also a direction that intersects the peripheral surface of the developing roller 30 exposed on the outside of the housing 10 of the developing cartridge 1. Further, the second direction is also a "separation direction" in which the developing roller 30 is separated from the surface of the photoconductor drum described later.

The developing cartridge 1 has a housing 10. The housing 10 has a first outer surface 11 separated from the first direction and a second outer surface 12. The first outer surface 11 is located at one end of the housing 10 in the first direction. The second outer surface 12 is located at the other end of the housing 10 in the first direction.

Further, the housing 10 has a container 10A and a lid 10B. The container 10A contains the developer. The lid 10B covers the container 10A. The container 10A and the lid 10B are arranged between the first outer surface 11 and the second outer surface 12 in the first direction.

Further, the housing 10 extends in a predetermined direction. Hereinafter, the direction in which the housing 10 extends is referred to as a "third direction". The third direction is a direction that intersects (more preferably, orthogonally) with the first direction. The third direction is also the insertion direction of the developing cartridge 1 into the slot 2A (see FIG. 1) of the drawer 2. The housing 10 has an opening 10C. The opening 10C is located at one end of the housing 10 in the third direction. The container 10A and the outside communicate with each other through the opening 10C.

The developing cartridge 1 has an agitator 20. The agitator 20 is rotatable about an axis extending in the first direction (third axis). The agitator 20 is a member that agitates the toner in the container 10A. The agitator 20 has a shaft extending in the first direction and a stirring blade extending radially outward from the shaft. When the agitator 20 rotates about its shaft, the developer in the container 10A is stirred by the stirring blades.

The developing cartridge 1 has a developing roller 30. The developing roller 30 is located away from the agitator 20 in the second direction. The developing roller 30 is located at the opening 10C at one end of the housing 10 in the third direction. The developing roller 30 is a roller that is rotatably supported by the housing 10 with respect to the first axis extending in the first direction.

The developing roller 30 has a developing roller main body 31 and a developing roller shaft 32. The developing roller body 31 is a cylindrical member extending in the first direction. For example, elastic rubber is used as the material of the developing roller main body 31. The developing roller shaft 32 is a columnar member that penetrates the developing roller main body 31 in the first direction. As the material of the developing roller shaft 32, a metal or a resin having conductivity is used. The developing roller body 31 is fixed to the developing roller shaft 32 so as not to rotate. That is, the developing roller body 31 can rotate together with the developing roller shaft 32. One side of the peripheral surface of the developing roller main body 31 in the second direction is exposed to the outside of the housing 10 via the opening 10C. Further, the other side of the peripheral surface of the developing roller main body 31 in the second direction is located inside the housing 10. That is, the other side of the peripheral surface of the developing roller main body 31 in the second direction is not exposed from the housing 10.

The developing cartridge 1 further has a developing electrode 33. The developing electrode 33 is located at one end of the developing roller shaft 32 in the first direction. Specifically, the developing roller shaft 32 is rotatably mounted on a bearing (not shown) of the housing 10, and the bearing on which the developing roller shaft 32 having the developing electrode 33 is mounted is integrally with the housing 10. It may be present or it may be a separate body. The developing electrode 33 is located on the first outer surface. The developing electrode 33 is electrically connected to the developing roller shaft 32. The developing electrode 33 is an electrode for applying a developing bias to the developing roller 30. The developing electrode 33 is arranged in the second direction at a position closer to the developing roller 30 than the shaft 61 and the first cam 62 of the separating member 60 described later. In the present embodiment, the developing electrode 33 is provided at the end of the developing roller shaft 32 of the developing roller 30.

A developing roller gear (not shown) is attached to the other end of the developing roller shaft 32 in the first direction. The developing roller gear is located on the second outer surface 12. The developing roller shaft 32 is fixed to the developing roller gear so as not to rotate. When the developing roller gear rotates, the developing roller shaft 32 also rotates, and the developing roller main body 31 also rotates together with the developing roller shaft 32.

The developing roller shaft 32 does not have to penetrate the developing roller main body 31 in the first direction. For example, the developing roller shaft 32 may extend in the first direction from both ends of the developing roller main body 31 in the first direction.

Further, the developing cartridge 1 has a supply roller (not shown). The supply roller is located in the container 10A and is located between the developing roller 30 and the agitator 20. Further, the supply roller is rotatable about a rotation axis extending in the first direction. When the developing cartridge 1 receives the driving force, the developing agent is supplied from the container 10A in the housing 10 to the outer peripheral surface of the developing roller 30 via the supply roller. At that time, the developer is triboelectrically charged between the supply roller and the developing roller 30. On the other hand, a development bias is applied to the development roller shaft 32 of the development roller 30. Therefore, the developing agent is attracted to the outer peripheral surface of the developing roller main body 31 by the electrostatic force between the developing roller shaft 32 and the developing agent.

Further, the developing cartridge 1 has a layer thickness regulating blade (not shown). The layer thickness regulating blade forms the developer supplied to the outer peripheral surface of the developing roller main body 31 to a constant thickness. After that, the developer on the outer peripheral surface of the developing roller main body 31 is supplied to the photoconductor drum 21 (see FIG. 11) described later in the drawer 2. At this time, the developer moves from the developing roller main body 31 to the photoconductor drum 21 according to the electrostatic latent image formed on the outer peripheral surface of the photoconductor drum 21. As a result, the electrostatic latent image is visualized on the outer peripheral surface of the photoconductor drum 21.

As shown in FIGS. 3 and 4, the developing cartridge 1 has a gear portion 40. The gear portion 40 is located on the second outer surface 12 of the housing 10. The gear portion 40 includes a coupling 41, a developing roller gear (not shown), and the like.

The coupling 41 is a gear that receives a driving force supplied from the image forming apparatus 100. The coupling 41 can rotate about a rotation axis extending in the first direction. The coupling 41 is arranged in the second direction at a position closer to the developing roller 30 than the shaft 61, the first cam 62, and the second cam 63 of the separating member 60 described later. The coupling 41 has a fastening hole 411 recessed in the first direction. When the developing cartridge 1 mounted in the slot 2A of the drawer 2 is mounted in the image forming apparatus 100, the drive shaft of the image forming apparatus 100 is inserted into the fastening hole 411. As a result, the drive shaft and the coupling 41 are connected so as not to rotate relative to each other. Therefore, when the drive shaft rotates, the coupling 41 rotates. When the coupling 41 rotates, the supply shaft connected to the supply roller (not shown) and the developing roller gear rotate. Then, the supply roller rotates together with the supply shaft, and the developing roller 30 also rotates together with the developing roller gear. Further, when the coupling 41 rotates, the agitator 20 also rotates via a gear (not shown).

The developing cartridge 1 has a separating member 60. The image forming apparatus 100 has a contact state and a separated state. The contact state is a state in which the developing roller 30 and the photoconductor drum 21 of the drawer 2 are in contact with each other when the developing cartridge 1 is mounted in the slot 2A of the drawer 2. Further, the separated state is a state in which the developing roller 30 and the photoconductor drum 21 of the drawer 2 are separated from each other. When the developing cartridge 1 is mounted in the slot 2A of the drawer 2, the image forming apparatus 100 is in a contact state. The separation member 60 is a member for switching the image forming apparatus 100 into a contact state or a separation state. In the present embodiment, the developing roller 30 is separated from the photoconductor drum 21 in the second direction, which is the separation direction, when the contact state is changed to the separation state.

The separating member 60 is provided on the lid 10B. The separating member 60 is movable with respect to the housing 10 and the developing roller 30 in the first direction. Further, the separating member 60 can move together with the housing 10 and the developing roller 30 in the second direction.

FIG. 6 is an exploded perspective view of the separating member 60. In FIG. 6, only the lid 10B of the housing 10 provided with the separating member 60 is shown. FIG. 7 is an enlarged view of the shaft 61 of the separating member 60 and the first cam 62 in an exploded manner. 8 and 9 are views for explaining the separating member 60 that moves with respect to the housing 10 and the developing roller 30 in the first direction. FIG. 10 is a plan view of the developing cartridge 1 as viewed from the third direction. Hereinafter, the separating member 60 will be described with reference to FIGS. 2 to 10.

The separating member 60 has a shaft 61 along an axis (second axis) extending in the first direction. The shaft 61 is columnar. However, the shaft 61 may be prismatic. The lid 10B has a hole 10B1 that penetrates in the first direction. The diameter of the hole 10B1 is larger than the diameter of the shaft 61. The shaft 61 is inserted into the hole 10B1. The diameter of the hole 10B1 is larger than the diameter of the shaft 61. The shaft 61 is inserted into the hole 10B1. The shaft 61 inserted into the hole 10B1 is located between the first position (position shown in FIG. 8) and the second position (position shown in FIG. 9) with respect to the lid 10B of the housing 10 in the first direction. It is movable. The second position is a position closer to the first outer surface 11 than the first position in the first direction. Further, in the present embodiment, the shaft 61 inserted into the hole 10B1 is rotatable with respect to the lid 10B with respect to the second shaft extending in the first direction.

The shaft 61 is preferably made of a rigid member. For example, the shaft 61 is made of iron. Further, the shaft 61 may be made of resin.

In this embodiment, the lid 10B has a ring 10B2 and a ring 10B3. The ring 10B2 is arranged at one end of the lid 10B in the first direction. The ring 10B3 is arranged at the other end of the lid 10B in the first direction. Further, the hole 10B along the first direction is exposed between the ring 10B2 and the ring 10B3. That is, the shaft 61 inserted into the hole 10B is exposed from the lid 10B between the ring 10B2 and the ring 10B3. Since the shaft 61 has rigidity, the exposed portion does not bend in the second direction or the third direction.

However, an additional ring may be further provided between the ring 10B2 and the ring 10B3. Further, in the lid 10B, the shaft 61 is exposed between the ring 10B2 and the ring 10B3 in the first direction, but the lid 10B may not be exposed. That is, the shaft 61 may be housed inside the lid 10B.

By holding the shaft 61 movably in the first direction with the lid 10B, the shaft 61 can be easily provided with respect to the housing 10 of the developing cartridge 1.

A first cam 62 is provided at one end of the shaft 61 in the first direction. The first cam 62 is made of rubber, resin, or the like. As shown in FIG. 7, the first cam 62 is provided with a hole 62A penetrating in the first direction. One end 61A of the shaft 61 has a smaller diameter than the other and is inserted into the hole 62A. When the one end 61A of the shaft 61 is inserted into the hole 62A, the tip of the one end 61A is exposed from the first cam 62 in the first direction. The first cam 62 is fixed to the one end portion 61A of the shaft 61 by fitting the retaining ring 61B to the tip of the exposed one end portion 61A. However, the first cam 62 may be fixed to the shaft 61 by adhesion.

The first cam 62 has a first inclined surface 621. As shown in FIG. 5, in the present embodiment, the first inclined surface 621 is provided on a part of the peripheral surface of the shaft 61. The first cam 62 has a contact surface 622 facing the lid 10B. The contact surface 622 is provided on a peripheral surface different from a part of the peripheral surface of the shaft 61 on which the first inclined surface 621 is provided. In other words, the contact surface 622 faces the housing 10, that is, the outer surface of the housing 10. Since the contact surface 622 and the lid 10B face each other, even if the first cam 62 tries to rotate with respect to the shaft 61, the contact surface 622 and the lid 10B come into contact with each other, and the first cam 62 cannot rotate. In the present embodiment, the first inclined surface 621 is provided on a part of the peripheral surface of the shaft 61, but the first inclined surface 621 may be provided on the entire peripheral surface of the shaft 61.

The first inclined surface 621 is inclined with respect to the shaft 61 extending in the first direction. The angle of the first inclined surface 621 with respect to the first direction is 43 degrees or more and 47 degrees or less. More preferably, the angle of the first inclined surface 621 with respect to the first direction is about 45 degrees. The first cam 62, that is, the first inclined surface 621 is located on the first outer surface 11 of the housing 10. The first inclined surface 621 separates from the developing roller 30 in the second direction as it goes away from the first outer surface 11 in the first direction. In other words, the distance of the first inclined surface 621 from the shaft 61 toward the outer side in the radial direction of the shaft 61 increases from one end to the other end in the first direction. Further, the first inclined surface 621 is inclined at an acute angle with respect to the shaft 61. The first cam 62 is a shape obtained by dividing a conical shape having the second axis as a central axis into two. In other words, the first cam 62 has a first inclined surface 621 that is part of a conical surface.

The first cam 62 may have a polygonal pyramid shape instead of a conical shape. In this case, the first inclined surface 621 is a part of the polygonal pyramid surface. Further, although the first inclined surface 621 is a surface that is gently inclined, unevenness such as a step may be provided in the middle of the inclination. Further, the first inclined surface 621 may have a curved surface shape.

A second cam 63 is provided at the other end of the shaft 61 in the first direction. The second cam 63 is made of rubber, resin, or the like. As described with reference to FIG. 7, the second cam 63 is fixed to the other end of the shaft 61 in the first direction, similarly to the first cam 62.

The second cam 63 has a second inclined surface 631. As shown in FIG. 4, in the present embodiment, the second inclined surface 631 is provided on the entire circumference of the peripheral surface of the shaft 61. In the present embodiment, the second inclined surface 631 is provided on the entire circumference of the peripheral surface of the shaft 61, but the second inclined surface 631 may be provided on a part of the peripheral surface of the shaft 61. ..

The second inclined surface 631 is inclined with respect to the shaft 61 extending in the first direction. The angle of the second inclined surface 631 with respect to the first direction is 43 degrees or more and 47 degrees or less. More preferably, the angle of the second inclined surface 631 with respect to the first direction is about 45 degrees. The distance of the second inclined surface 631 from the shaft 61 toward the outer side in the radial direction of the shaft 61 increases from one end to the other end of the shaft 61 in the first direction. Further, the second inclined surface 631 is inclined at an acute angle with respect to the shaft 61. That is, the first inclined surface 621 of the first cam 62 and the second inclined surface 631 of the second cam 63 are inclined in the same direction with respect to the first direction. The second cam 63 has a conical shape with the second axis as the central axis. In other words, the second cam 63 has a second inclined surface 631 that is a part of the conical surface.

The second cam 63 may have a polygonal pyramid shape instead of a conical shape. In this case, the second inclined surface 631 is a part of the polygonal pyramid surface. Further, although the second inclined surface 631 is a surface that is gently inclined, unevenness such as a step may be provided in the middle of the inclination. Further, the second inclined surface 631 may have a curved surface shape.

The first cam 62 and the second cam 63 can move in the first direction together with the shaft 61 as shown in FIGS. 8 and 9. When the shaft 61 moves from the first position to the second position in the first direction, the second cam 63 approaches the lid 10B and the first cam 62 moves away from the lid 10B. When the shaft 61 moves from the second position to the first position in the first direction, the second cam 63 moves away from the lid 10B, and the first cam 62 approaches the lid 10B. In other words, when the shaft 61 moves from the first position to the second position in the first direction, the second cam 63 approaches the housing 10 and the first cam 62 moves away from the housing 10. Further, when the shaft 61 moves from the second position to the first position in the first direction, the second cam 63 moves away from the housing 10 and the first cam 62 approaches the housing 10.

Further, the shaft 61 inserted into the pair of holes 10B1 cannot rotate with respect to the lid 10B of the housing 10 with respect to the second shaft extending in the first direction. However, the shaft 61 may be rotatable with respect to the lid 10B with respect to the second shaft. In this case, the first cam 62 and the second cam 63 are provided on the shaft 61 so as not to rotate about the second axis with respect to the housing 10B. That is, only the shaft 63 rotates about the second axis, and the first cam 62 and the second cam 63 do not rotate.

The separating member 60 has a coil spring 64. The coil spring 64 is provided at the other end of the shaft 61 in the first direction. Specifically, the shaft 61 is inserted into the coil spring 64. The coil spring 64 is located between the second cam 63 and the lid 10B in the first direction. One end of the coil spring 64 in the first direction comes into contact with the lid 10B, for example, via a washer 65. Further, the other end of the coil spring 64 in the first direction comes into contact with the second cam 63. The coil spring 64 is covered with the cover 66 in the circumferential direction around the shaft 61. Although the coil spring 64 is connected to the shaft 61 via the second cam 63, it may be directly connected to the shaft 61.

The coil spring 64 is an elastic member (elastic member) that can expand and contract in the first direction between the first length and the second length shorter than the first length. As will be described in detail later, the second cam 63 is pushed by a pressing force from the other end of the shaft 61 toward one end in the first direction. Then, the shaft 61, the first cam 62, and the second cam 63 move from the first position shown in FIG. 8 to the second position shown in FIG. When moving from the first position to the second position, the coil spring 64 contracts from the first length to the second length. When the pressing force on the second cam 63 disappears, the shaft 61, the first cam 62, and the second cam 63 are moved from the second position to the second position due to the restoring force of the coil spring 64 that returns from the second length to the first length. It is pushed back to the 1st position. In this way, the shaft 61, the first cam 62, and the second cam 63 move in the first direction with respect to the housing 10 due to the pressing force in the first direction and the elastic force of the coil spring 64.

When the developing cartridge 1 having the above configuration is mounted on the drawer 2, the developing roller 30 of the developing cartridge 1 comes into contact with the photoconductor drum 21. In this state, the first inclined surface 621 of the first cam 62 comes into contact with the first receiving surface 22 (see FIG. 11) of the drawer 2 described later. Further, the second inclined surface 631 of the second cam 63 comes into contact with the second receiving surface 23 (see FIG. 11). Specifically, when the developing cartridge 1 is mounted on the drawer 2, the first inclined surface 621 and the first receiving surface 22 are not in contact with each other, and the second inclined surface 631 and the second receiving surface 23 are not in contact with each other. Is. When the developing cartridge 1 moves in the first direction by a certain amount, the first inclined surface 621 and the first receiving surface 22 come into contact with each other, and the second inclined surface 631 and the second receiving surface 23 come into contact with each other. .. When the developing cartridge 1 is mounted on the drawer 2, the first inclined surface 621 may come into contact with the first receiving surface 22. Further, when the developing cartridge 1 is mounted on the drawer 2, the second inclined surface 631 may come into contact with the second receiving surface 23.

When the developing roller 30 is separated from the photoconductor drum 21, the separating member 60 is pressed in the direction from the second cam 63 to the first cam 62 in the first direction. As a result, the shaft 61, the first cam 62, and the second cam 63 move in the first direction with respect to the housing 10 and the developing roller 30.

At this time, the first inclined surface 621 of the first cam 62 moves in the first direction while being in contact with the first receiving surface 22. As described above, the first inclined surface 621 extends radially outward of the shaft 61 from the first cam 62 toward the second cam 63. Therefore, when the first cam 62 moves in the first direction, the position of the first inclined surface 621 that the first receiving surface 22 comes into contact with becomes far from the shaft 61 in the radial direction of the shaft 61. The first inclined surface 621 and the first receiving surface 22 face each other in the second direction. That is, when the first inclined surface 621 moves in the first direction, it also moves in the second direction away from the first receiving surface 22.

Similarly, the second inclined surface 631 of the second cam 63 moves in the first direction while being in contact with the second receiving surface 23. As described above, the second inclined surface 631 extends radially outward of the shaft 61 from the first cam 62 toward the second cam 63. Therefore, when the second cam 63 moves in the first direction, the position of the second inclined surface 631 with which the second receiving surface 23 comes into contact becomes far from the shaft 61 in the radial direction of the shaft 61. The second inclined surface 631 and the second receiving surface 23 face each other in the second direction. That is, when the second inclined surface 631 moves in the first direction, it also moves in the direction away from the second receiving surface 23 in the second direction.

As the first cam 62 and the second cam 63 move in the second direction while moving in the first direction, the shaft 61 also moves in the same manner. When the shaft 61, the first cam 62, and the second cam 63 move in the second direction, the housing 10 and the developing roller 30 also move in the second direction. As a result, as shown in FIG. 17, the developing roller 30 is separated from the photoconductor drum 21 in the second direction.

The coil spring 64 expands and contracts as the shaft 61, the first cam 62, and the second cam 63 move in the first direction. The coil spring 64 has a first length when the shaft 61, the first cam 62, and the second cam 63 are in the first position shown in FIG. Further, the coil spring 64 has a second length shorter than the first length when the shaft 61, the first cam 62, and the second cam 63 are in the second position shown in FIG. The coil spring 64 contracted from the first length to the second length extends from the second length to the first length when the pressing force on the separating member 60 is removed.

When the shaft 61, the first cam 62 and the second cam 63 move from the second position to the first position, the first inclined surface 621 of the first cam 62 becomes the first in the second direction due to the reverse action of the above. It moves in the direction approaching the receiving surface 22. Further, the second inclined surface 631 of the second cam 63 moves in the direction approaching the second receiving surface 23 in the second direction. Along with this, the housing 10 and the developing roller 30 move in the second direction, and the developing roller 30 approaches the photoconductor drum 21 in the second direction. Then, the surface of the developing roller 30 comes into contact with the surface of the photoconductor drum 21.

<1.3. About the drawer>
FIG. 11 is a perspective view of the drawer 2. FIG. 12 is a plan view of the drawer 2 as viewed from the third direction. FIG. 13 is a perspective view showing a state in which the developing cartridge 1 is mounted in the slot 2A of the drawer 2. FIG. 14 is a plan view of a state in which the developing cartridge 1 is mounted in the slot 2A of the drawer 2 as viewed from a third direction. FIG. 15 is a plan view of the state in which the developing cartridge 1 is mounted in the slot 2A of the drawer 2 as viewed from the first direction.

The drawer 2 has a frame 200. The frame 200 has four slots 2A. A developing cartridge 1 is mounted in each of the four slots 2A. The drawer 2 has a photoconductor drum 21. The photoconductor drum 21 is arranged for each of the four slots 2A. The photoconductor drum 21 is rotatable about a rotation axis (drum axis) extending in the first direction. The developing cartridge 1 is mounted in the slot 2A of the drawer 2 with the surface of the developing roller 30 facing the surface of the photoconductor drum 21. The drawer 2 is mounted on the main body frame 101 (see FIG. 1) with the developing cartridge 1 mounted in the slot 2A.

The frame 200 of the drawer 2 has a first side frame 201 and a second side frame 202. The first side frame 201 and the second side frame 202 are located apart from each other in the first direction. A photoconductor drum 21 is provided between the first side frame 201 in the first direction and the second side frame. When the developing cartridge 1 is mounted in the slot 2A of the drawer 2, the developing cartridge 1 is mounted between the first side frame 201 and the second side frame 202 in the first direction. Then, in the first direction, the first outer surface 11 of the developing cartridge 1 and the first side frame 201 face each other. Further, when the developing cartridge 1 is mounted in the slot 2A of the drawer 2, the second outer surface 12 of the developing cartridge 1 and the second side frame 202 face each other in the first direction.

The first side frame 201 is provided with a first recess 201A that penetrates in the first direction and is recessed in the third direction. The first recess 201A is provided for each of the four slots 2A. When the developing cartridge 1 is mounted in the slot 2A of the drawer 2, as shown in FIGS. 13 and 14, the IC chip 51 covered with the cover 45 of the developing cartridge 1 is located in the first recess 201A.

The second side frame 202 is a hole that penetrates in the first direction and exposes a part of the developing cartridge 1 to the outside, and is opened in the third direction toward the direction away from the photoconductor drum 21. The recess 202A is provided. The second recess 202A is also provided for each of the four slots 2A, similarly to the second recess 201A. When the developing cartridge 1 is mounted in the slot 2A of the drawer 2, the second cam 63 of the developing cartridge 1 is located in the second recess 202A as shown in FIGS. 13 to 15.

Further, the second side frame 202 has a through hole 202B penetrating in the first direction. Through holes 202B are provided for each of the four slots 2A. When the developing cartridge 1 is mounted in the slot 2A of the drawer 2, the fastening hole 411 of the coupling 41 of the developing cartridge 1 is exposed from the through hole 202B as shown in FIGS. 13 to 15. The drive shaft of the image forming apparatus 100 is inserted into the fastening hole 411 via the through hole 202B. Then, the drive shaft and the coupling 41 are connected so as not to rotate relative to each other.

Further, the drawer 2 has a first receiving surface 22 and a second receiving surface 23. The first receiving surface 22 is located away from the second receiving surface 23 in the first direction. That is, the first receiving surface 22 is arranged at one end of the slot 2A in the first direction. Further, the second receiving surface 23 is arranged at the other end of the slot 2A in the first direction.

The first receiving surface 22 is provided on the surface of the first side frame 201 facing the second side frame 202 in the first direction. The first receiving surface 22 is inclined with respect to the first direction. More specifically, the first receiving surface 22 is arranged at a position facing the first cam 62 of the developing cartridge 1 mounted in the slot 2A of the drawer 2 in the second direction. Then, as shown in FIG. 14, the first receiving surface 22 comes into contact with the first inclined surface 621 of the first cam 62. The distance of the first receiving surface 22 from the developing cartridge 1 in the second direction increases from the first side frame 201 to the second side frame 202 in the first direction.

The second receiving surface 23 is provided in the second recess 202A of the second side frame 202. The second receiving surface 23 is inclined in the same direction as the first receiving surface 22 with respect to the first direction. More specifically, the second receiving surface 23 is arranged at a position facing the second cam 63 of the developing cartridge 1 mounted in the slot 2A of the drawer 2 in the second direction. Then, as shown in FIG. 14, the second receiving surface 23 comes into contact with the second inclined surface 631 of the second cam 63. The distance of the second receiving surface 23 from the developing cartridge 1 in the second direction increases as the second receiving surface 23 moves away from the first side frame 201 in the first direction.

<1.4. Separation operation by the separation member 60>
Next, the movement at the time of switching between the contact state and the separated state in the image forming apparatus 100 will be described.

FIG. 16 is a diagram for explaining a separation operation by the separation member 60. Note that FIG. 16A shows a state in which the developing roller 30 and the photoconductor drum 21 are in contact with each other, and FIG. 16B shows a state in which the developing roller 30 and the photoconductor drum 21 are separated from each other. FIG. 17 is a perspective view of the developing cartridge 1 in a contact state. FIG. 18 is a perspective view of the developing cartridge 1 in a separated state.

When the developing cartridge 1 is mounted in the slot 2A of the drawer 2, the developing roller 30 of the developing cartridge 1 and the photoconductor drum 21 come into contact with each other, as shown in FIG. In this contact state, as shown in FIG. 16A, the first inclined surface 621 of the first cam 62 comes into contact with the first receiving surface 22. Further, the second inclined surface 631 of the second cam 63 comes into contact with the second receiving surface 23. Specifically, when the developing cartridge 1 is mounted on the drawer 2, the first inclined surface 621 and the first receiving surface 22 are not in contact with each other, and the second inclined surface 631 and the second receiving surface 23 are not in contact with each other. Is. When the developing cartridge 1 moves in the first direction by a certain amount, the first inclined surface 621 and the first receiving surface 22 come into contact with each other, and the second inclined surface 631 and the second receiving surface 23 come into contact with each other. .. When the developing cartridge 1 is mounted on the drawer 2, the first inclined surface 621 may come into contact with the first receiving surface 22. Further, when the developing cartridge 1 is mounted on the drawer 2, the second inclined surface 631 and the second receiving surface 23 may come into contact with each other.

More specifically, the first inclined surface 621 expands outward in the radial direction of the shaft 61 from the first cam 62 to the second cam 63 in the first direction. Then, the first receiving surface 22 comes into contact with the position of the first inclined surface 621, which has a short distance from the shaft 61 in the radial direction of the shaft 61. Similarly, the second inclined surface 631 expands outward in the radial direction of the shaft 61 from the first cam 62 in the first direction toward the second cam 63. Then, the second receiving surface 23 comes into contact with the position of the second inclined surface 631 which is a short distance from the shaft 61 in the radial direction of the shaft 61.

Since each of the first cam 62 and the second cam 63 has a conical shape, even if the shaft 61 rotates about the second axis, the first inclined surface 621 and the second inclined surface 631 still have the first receiving surface 22 and the first inclined surface 631. It comes into contact with each of the second receiving surfaces 23.

The image forming apparatus 100 has a driving unit 103. The drive unit 103 is, for example, a motor that moves the pressing member 104 along the first direction. The pressing member 104 is a cylinder or prism extending along the first direction. The pressing member 104 moves in the first direction between a contact position in contact with the second cam 63 of the developing cartridge 1 mounted in the slot 2A of the drawer 2 and a non-contact position in contact with the second cam 63. ..

When the developing roller 30 is separated from the photoconductor drum 21, the driving unit 103 moves the pressing member 104 in the direction from the second cam 63 to the first cam 62 in the first direction. As a result, the second cam 63 is pressed in the first direction by the pressing member 104. When the second cam 63 is pressed, the shaft 61, the first cam 62 and the second cam 63 move in the first direction with respect to the housing 10 and the developing roller 30.

At this time, the first inclined surface 621 of the first cam 62 moves in the first direction while being in contact with the first receiving surface 22. As described above, the first inclined surface 621 extends radially outward of the shaft 61 from the first cam 62 toward the second cam 63. Therefore, when the first cam 62 moves in the first direction, the position of the first inclined surface 621 that the first receiving surface 22 comes into contact with becomes far from the shaft 61 in the radial direction of the shaft 61. The first inclined surface 621 and the first receiving surface 22 face each other in the second direction. That is, when the first inclined surface 621 moves in the first direction, as shown in FIG. 16B, the first inclined surface 621 also moves in the direction away from the first receiving surface 22 in the second direction.

Similarly, the second inclined surface 631 of the second cam 63 moves in the first direction while being in contact with the second receiving surface 23. As described above, the second inclined surface 631 extends radially outward of the shaft 61 from the first cam 62 toward the second cam 63. Therefore, when the second cam 63 moves in the first direction, the position of the second inclined surface 631 with which the second receiving surface 23 comes into contact becomes far from the shaft 61 in the radial direction of the shaft 61. The second inclined surface 631 and the second receiving surface 23 face each other in the second direction. That is, when the second inclined surface 631 moves in the first direction, as shown in FIG. 16B, the second inclined surface 631 also moves in the direction away from the second receiving surface 23 in the second direction.

As the first cam 62 and the second cam 63 move in the second direction while moving in the first direction, the shaft 61 also moves in the same manner. When the shaft 61, the first cam 62, and the second cam 63 move in the second direction, as shown in FIG. 16B, the housing 10 and the developing roller 30 also move in the second direction. As a result, as shown in FIG. 18, the developing roller 30 is separated from the photoconductor drum 21 in the second direction. Then, the image forming apparatus 100 is in a separated state.

The coil spring 64 expands and contracts as the shaft 61, the first cam 62, and the second cam 63 move in the first direction. The coil spring 64 has a first length when the shaft 61, the first cam 62, and the second cam 63 are in the first position shown in FIG. Further, the coil spring 64 has a second length shorter than the first length when the shaft 61, the first cam 62, and the second cam 63 are in the second position shown in FIG. The coil spring 64 contracted from the first length to the second length extends from the second length to the first length when the pressing force by the pressing member 104 is removed.

When the shaft 61, the first cam 62 and the second cam 63 move from the second position to the first position, the first inclined surface 621 of the first cam 62 becomes the first in the second direction due to the reverse action of the above. It moves in the direction approaching the receiving surface 22. Further, the second inclined surface 631 of the second cam 63 moves in the direction approaching the second receiving surface 23 in the second direction. Along with this, the housing 10 and the developing roller 30 move in the second direction, and the developing roller 30 approaches the photoconductor drum 21 in the second direction. Then, the image forming apparatus 100 is in a contact state.

By providing the first cam 62 and the second cam 63 at both ends of the shaft 61 in the first direction, the housing 10 and the developing roller 30 are provided when the image forming apparatus 100 shifts between the separated state and the contact state. Both ends in the first direction of the above can be prevented from tilting.

As described above, the shaft 61 moves in the first direction with respect to the housing 10 and the developing roller 30 according to the driving force in the first direction. When the first inclined surface 621 comes into contact with the first receiving surface 22 due to the movement of the shaft 61 in the first direction, the first inclined surface 621 is in the second direction along the first receiving surface 22. Move to. Along with the movement of the first inclined surface 621 in the second direction, the housing 10 and the developing roller 30 also move in the second direction. As a result, the driving force on both sides is not required, and the developing cartridge 1 can be moved in the second direction by the driving force in the first direction. Further, since the developing cartridge 1 includes the first inclined surface 621 and the shaft 61, the shaft 61 is attached to and detached from the drum cartridge as compared with the case where the drum cartridge is provided with the shaft. , It is possible to prevent the development cartridge 1 from being attached or detached.

Further, when moving the shaft 61 in the first direction, it is not necessary to apply a driving force to both sides of the shaft 61 in the first direction, and if the driving force is applied from one side of the shaft 61 in the first direction, the developing cartridge can be used. Can be moved.

Further, the image forming apparatus 100 has a drive source for rotationally driving the developing roller 30, the photoconductor drum 21, and the like on one side of the developing cartridge 1 and the drawer 2 in the first direction. A drive unit 103, which is a drive source for moving the pressing member 104 in the first direction, can be arranged in the vicinity of the drive source. That is, since the drive sources included in the image forming apparatus 100 can be integrated in one direction of the developing cartridge 1 and the drawer 2, the image forming apparatus 100 can be downsized. Further, it is not necessary to provide parts for moving the developing cartridge on both sides of the drawer 2 in the first direction, and the drawer 2 can be simplified or downsized.

<2. Embodiment 2>
In the first embodiment, the first inclined surface 621 and the second inclined surface 631 are formed to be inclined at a constant angle. On the other hand, in the second embodiment, the first inclined surface 621 and the second inclined surface 631 have at least two inclined surfaces inclined at different angles. The differences will be described below.

FIG. 19 is a plan view of the developing cartridge 1 of the second embodiment as viewed from the third direction.

The first inclined surface 621 of the first cam 62 has an inclined surface 621A and an inclined surface 621B. The slope 621A and the slope 621B are aligned in the first direction. The slope 621A is arranged at a position farther from the second cam 63 than the slope 621B in the first direction. Further, the slope 621A is a steeper slope than the slope 621B with respect to the first direction. Specifically, the slope 621A is inclined at an acute angle with respect to the first direction. Further, the slope 621B is also inclined at an acute angle with respect to the first direction. The inclination angle of the slope 621A with respect to the first direction is larger than the inclination angle of the slope 621B with respect to the first direction. The angle of the slope 621A with respect to the first direction is 43 degrees or more and 47 degrees or less. More preferably, the angle of the slope 621A with respect to the first direction is 45 degrees. The angle of the slope 621B with respect to the first direction is 12 degrees or more and 17 degrees or less. Preferably, the angle of the slope 621B with respect to the first direction is 14 degrees or more and 15 degrees or less. More preferably, the angle of the slope 621B is 14 degrees or 15 degrees. The slope 621A is an example of the "first slope" of the present disclosure. The slope 621B is an example of the "second slope" of the present disclosure. For example, the ratio of the length of the slope 621A in the first direction to the length of the shaft 61 on the slope 621A in the radial direction (in other words, the second direction) is 1: 1. Further, for example, the ratio of the length in the first direction on the slope 621B to the length in the radial direction (in other words, the second direction) of the shaft 61 on the slope 621B is 4: 1.

The second inclined surface 631 of the second cam 63 has an inclined surface 631A and an inclined surface 631B. The slope 631A and the slope 631B are arranged in the first direction. The slope 631A is arranged at a position closer to the first cam 62 than the slope 631B in the first direction. Further, the slope 631A is a steeper slope than the slope 631B with respect to the first direction. Specifically, the slope 631A is inclined at an acute angle with respect to the first direction. Further, the slope 631B is also inclined at an acute angle with respect to the first direction. The inclination angle of the slope 631A with respect to the first direction is larger than the inclination angle of the slope 631B with respect to the first direction. The angle of the slope 631A with respect to the first direction is 43 degrees or more and 47 degrees or less. More preferably, the angle of the slope 631A with respect to the first direction is 45 degrees. The angle of the slope 631B with respect to the first direction is 12 degrees or more and 17 degrees or less. Preferably, the angle of the slope 631B with respect to the first direction is 14 degrees or more and 15 degrees or less. More preferably, the angle of the slope 631B is 14 degrees or 15 degrees. Slope 631A is an example of the "third slope" of the present disclosure. Slope 631B is an example of the "fourth slope" of the present disclosure. For example, the ratio of the length of the slope 631A in the first direction to the length of the shaft 61 on the slope 631A in the radial direction (in other words, the second direction) is 1: 1. Further, for example, the ratio of the length in the first direction on the slope 631B to the length in the radial direction (in other words, the second direction) of the shaft 61 on the slope 631B is 4: 1.

Preferably, the slope 621A and the slope 631A are inclined at the same angle with respect to the first direction. Further, preferably, the slope 621B and the slope 631B are inclined at the same angle with respect to the first direction.

<2.1. Separation operation by the separation member 60>
Next, the movement at the time of switching between the contact state and the separated state in the image forming apparatus 100 will be described.

FIG. 20 is a diagram for explaining a separation operation by the separation member 60. Note that FIG. 20A shows a state in which the developing roller 30 and the photoconductor drum 21 are in contact with each other, and FIG. 20B shows a state in which the developing roller 30 and the photoconductor drum 21 are separated from each other.

In a contact state where the developing roller 30 of the developing cartridge 1 and the photoconductor drum 21 are in contact with each other, the slope 621A of the first inclined surface 621 is in contact with the first receiving surface 22 as shown in FIG. 20 (A). Further, the slope 631A of the second inclined surface 631 comes into contact with the second receiving surface 23. Specifically, when the developing cartridge 1 is mounted on the drawer 2, the first inclined surface 621 and the first receiving surface 22 are not in contact with each other, and the second inclined surface 631 and the second receiving surface 23 are not in contact with each other. Is. When the developing cartridge 1 moves in the first direction by a certain amount, the first inclined surface 621 and the first receiving surface 22 come into contact with each other, and the second inclined surface 631 and the second receiving surface 23 come into contact with each other. .. When the developing cartridge 1 is mounted on the drawer 2, the first inclined surface 621 may come into contact with the first receiving surface 22. Further, when the developing cartridge 1 is mounted on the drawer 2, the second inclined surface 631 and the second receiving surface 23 may come into contact with each other.

When the second cam 63 is pressed in the first direction by the pressing member 104, the shaft 61, the first cam 62 and the second cam 63 move in the first direction with respect to the housing 10 and the developing roller 30. At this time, the slope 621A of the first inclined surface 621 moves in the first direction while being in contact with the first receiving surface 22. Further, the slope 631A of the second inclined surface 631 moves in the first direction while being in contact with the second receiving surface 23. As a result, as shown in FIG. 20B, the first inclined surface 621 also moves in the direction away from the first receiving surface 22 in the second direction. Further, as shown in FIG. 20B, the second inclined surface 631 also moves in the direction away from the second receiving surface 23 in the second direction. Then, the developing roller 30 separates from the photoconductor drum 21 in the second direction (see FIG. 18).

When the shaft 61 further moves in the first direction, the slope 621B of the first inclined surface 621 moves in the first direction while being in contact with the first receiving surface 22. Further, the slope 631B of the second inclined surface 631 moves in the first direction while being in contact with the second receiving surface 23.

When moving in the first direction, the slope 621A of the first inclined surface 621, which first hits the first receiving surface 22, is a steeper slope than the slope 621B. Further, the slope 631A of the second inclined surface 631 which first hits the second receiving surface 23 when moving in the first direction is a steeper slope than the slope 631B. Therefore, at the beginning of the movement of the separating member 60 in the first direction, the amount of movement of the separating member 60 in the second direction can be increased. As a result, the developing roller 30 can be separated from the photoconductor drum 21 with a small amount of movement of the separating member 60 in the first direction.

Further, the slope 621B having a gentler inclination angle with respect to the first direction than the slope 621A comes into contact with the first receiving surface 22, and the slope 631B having a gentler inclination angle than the slope 631A comes into contact with the second receiving surface 23. 60 moves in the first direction while suppressing the movement in the second direction. As a result, the drive load of the pressing member 104 can be reduced.

When the shaft 61, the first cam 62 and the second cam 63 move from the second position to the first position, the first inclined surface 621 of the first cam 62 becomes the first in the second direction due to the reverse action of the above. It moves in the direction approaching the receiving surface 22. Further, the second inclined surface 631 of the second cam 63 moves in the direction approaching the second receiving surface 23 in the second direction. Along with this, the housing 10 and the developing roller 30 move in the second direction, and the developing roller 30 approaches the photoconductor drum 21 in the second direction. Then, the image forming apparatus 100 is in a contact state.

As described above, the shaft 61 moves in the first direction with respect to the housing 10 and the developing roller 30 according to the driving force in the first direction. When the first inclined surface 621 comes into contact with the first receiving surface 22 due to the movement of the shaft 61 in the first direction, the first inclined surface 621 is in the second direction along the first receiving surface 22. Move to. Along with the movement of the first inclined surface 621 in the second direction, the housing 10 and the developing roller 30 also move in the second direction. As a result, the driving force on both sides is not required, and the developing cartridge 1 can be moved in the second direction by the driving force in the first direction. Further, since the developing cartridge 1 includes the first inclined surface 621 and the shaft 61, the shaft 61 is attached to and detached from the drum cartridge as compared with the case where the drum cartridge is provided with the shaft. , It is possible to prevent the development cartridge 1 from being attached or detached.

Further, when moving the shaft 61 in the first direction, it is not necessary to apply a driving force to both sides of the shaft 61 in the first direction, and if the driving force is applied from one side of the shaft 61 in the first direction, the developing cartridge can be used. Can be moved.

Further, the image forming apparatus 100 has a drive source for rotationally driving the developing roller 30, the photoconductor drum 21, and the like on one side of the developing cartridge 1 and the drawer 2 in the first direction. A drive unit 103, which is a drive source for moving the pressing member 104 in the first direction, can be arranged in the vicinity of the drive source. That is, since the drive sources included in the image forming apparatus 100 can be integrated in one direction of the developing cartridge 1 and the drawer 2, the image forming apparatus 100 can be miniaturized. Further, it is not necessary to provide parts for moving the developing cartridge on both sides of the drawer 2 in the first direction, and the drawer 2 can be simplified or downsized.

<3. Modification example>
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments.

In the above embodiment, the separating member 60 has a first cam 62 and a second cam 63. However, the separating member 60 may have at least one of the first cam 62 and the second cam 63. Further, the separating member 60 may have at least one of the first inclined surface 621 and the second inclined surface 631. Further, for example, without providing the first cam 62 and the second cam 63, the shaft 61 is machined to incline the peripheral surface of the end portion of the shaft 61 in the first direction, so that the first inclined surface 621 and the second can be used. The inclined surface 631 may be configured.

In the above embodiment, the coil spring 64 has been described as an example of the elastic member, but the present invention is not limited to this. The elastic member may be a member having an elastic force such as a leaf spring, a torsion spring, rubber, or a sponge.

Further, the elements appearing in the above-described embodiments and modifications may be appropriately combined as long as there is no contradiction.

1: Development cartridge 2: Drawer 2A: Slot 10: Housing 10A: Container 10B: Lid 10B 1: Hole 10C: Opening 11: First outer surface 12: Second outer surface 20: Agitator 21: Photoreceptor drum 22: No. 1 receiving surface 23: 2nd receiving surface 30: developing roller 31: developing roller body 32: developing roller shaft 33: developing electrode 40: gear portion 41: coupling 45: cover 51: IC chip 60: separating member 61: shaft 62 : 1st cam 63: 2nd cam 64: Coil spring 65: Washer 66: Cover 100: Image forming apparatus 101: Main body frame 102: Control unit 103: Drive unit 104: Pressing member 200: Frame 201: 1st side frame 201A : First concave portion 202: Second side frame 202A: Second concave portion 202B: Through hole 411: Fastening hole 621: First inclined surface 631: Second inclined surface

Claims (146)

A housing that can accommodate the developer and
A developing roller that is rotatable about the first axis extending in the first direction, and one side of the peripheral surface of the developing roller in the second direction is exposed to the outside of the housing, and the circumference of the developing roller in the second direction is exposed. The other side of the surface is a developing roller located inside the housing, and
A shaft along a second axis extending in the first direction, which is movable with respect to the housing and the developing roller in the first direction, and is movable with respect to the housing and the developing roller in the second direction. A shaft that can move with the rollers,
A first inclined surface located at one end of the shaft in the first direction and movable together with the shaft, and the first inclined surface inclined with respect to the first direction, from the one end to the other end. The distance between the shaft and the first inclined surface in the second direction, that is, the distance between the shaft and the first inclined surface toward the outside in the radial direction of the shaft becomes longer. 1 slope and
A developing cartridge characterized by being equipped with. The developing cartridge according to claim 1.
The first inclined surface is inclined at an acute angle with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 1 or 2.
The first inclined surface is located on the peripheral surface of the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 3.
The first inclined surface is inclined with respect to the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 4.
The first inclined surface is located on one side of the shaft in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 5.
One side of the shaft in the second direction is located closer to the developing roller than the other side of the shaft.
A developing cartridge characterized by that. The developing cartridge according to claim 1 to claim 6.
The angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 1 to claim 6.
The first inclined surface is
It has a first slope and a second slope arranged in the first direction.
The first slope is
In the first direction, it is arranged at a position far from the other end of the shaft from the second slope.
The inclination angle of the first slope with respect to the first direction is larger than the inclination angle of the second slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 8.
The angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the second slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 9.
A second inclined surface located at the other end of the shaft in the first direction and movable together with the shaft, and the second inclined surface inclined with respect to the one direction, from the one end to the other end. A second inclined surface, the distance from the shaft to the outside in the radial direction of the shaft increases toward the portion.
A developing cartridge characterized by being equipped with. The developing cartridge according to claim 10.
The second inclined surface is inclined at an acute angle with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 10 or 11.
The second inclined surface is located on the peripheral surface of the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 10 to 12.
The second inclined surface is inclined with respect to the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 10 to 13.
The second inclined surface is located on one side of the shaft in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 14.
One side of the shaft in the second direction is located closer to the developing roller than the other side of the shaft.
A developing cartridge characterized by that. The developing cartridge according to claim 10 to 15.
The angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 10 to 15.
The second inclined surface is
It has a third slope and a fourth slope arranged in the first direction.
The third slope is
In the first direction, it is arranged at a position closer to the first slope than the fourth slope.
The inclination angle of the third slope with respect to the first direction is larger than the inclination angle of the fourth slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 17.
The angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the fourth slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 18.
The second direction is a direction that intersects the peripheral surface of the developing roller exposed to the outside of the housing.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 19.
The shaft is non-rotatable with respect to the housing with respect to the second axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 19.
The shaft is rotatable with respect to the housing with respect to the second axis.
The first inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 10 to 18.
The shaft is rotatable with respect to the housing with respect to the second axis.
The second inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 22.
The housing is
A container that can accommodate the developer and
A lid that covers the container and has a through hole that penetrates in the first direction.
Have,
The shaft is inserted into the through hole.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 23.
It is used for drum cartridges and
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the drum cartridge.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 24.
It is used for drum cartridges including photoconductor drums.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
A developing cartridge characterized by that. 25. The developing cartridge according to claim 25.
The first inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with a part of the drum cartridge.
The housing and the developing roller
When the first inclined surface slides with respect to the part of the drum cartridge, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 10 to 18.
It is used for drum cartridges including photoconductor drums.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
The first inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with the first receiving surface of the drum cartridge.
The second inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge.
The housing and the developing roller
When the first inclined surface slides with respect to the first receiving surface and the second inclined surface slides with respect to the second receiving surface, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 10 to 18 and 27.
The shaft
When the second inclined surface receives a pressing force from the other end of the shaft toward the one end in the first direction, the second inclined surface moves from the first position to the second position.
A developing cartridge characterized by that. 28. The developing cartridge according to claim 28.
An elastic member that can be expanded and contracted in the first direction, one end of the elastic member in the first direction is connected to the first inclined surface, and the other end of the elastic member in the first direction is attached to the housing. Elastic members to be connected,
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 29.
The elastic member is a coil spring, which can expand and contract in the first direction between a first length and a second length shorter than the first length, and when the shaft is in the first position. The first length, and the second length when the shaft is in the second position.
The shaft is located at the second position when the coil spring has the first length, and is located at the first position when the coil spring has the second length.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 30.
The housing is
It has a first outer surface and a second outer surface separated from each other in the first direction, the first outer surface is located at one end of the housing in the first direction, and the second outer surface is the casing. Located at the other end of the body in the first direction,
The first inclined surface is
It is located on the first outer surface and separates from the developing roller in the second direction as it moves away from the first outer surface in the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 31.
A coupling for rotating the developing roller, further comprising a coupling arranged on the second outer surface.
A developing cartridge characterized by that. The developing cartridge according to claim 32.
The coupling is
In the second direction, it is arranged closer to the developing roller than the shaft and the first inclined surface.
A developing cartridge characterized by that. The developing cartridge according to claim 32 or 33.
The coupling receives a driving force
The shaft receives a pressing force in a direction from the second outer surface toward the first outer surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 31 to 34.
An electrode electrically connected to the developing roller and located on the first outer surface.
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 35.
The electrode is
In the second direction, it is arranged closer to the developing roller than the shaft and the first inclined surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 1 to 36.
An agitator that is rotatable about a third axis extending in the first direction and agitates the developer.
Further prepare
The developing roller
A developing cartridge characterized by being away from the agitator in the second direction. The developing cartridge according to claim 37.
The agitator is
In the second direction, it is arranged closer to the developing roller than the shaft.
A developing cartridge characterized by that. A housing that can accommodate the developer and
A developing roller that is rotatable about the first axis extending in the first direction, and one side of the peripheral surface of the developing roller in the second direction is exposed to the outside of the housing, and the peripheral surface of the developing roller in the second direction is exposed. The other side of the is a developing roller located inside the housing, and
A shaft along a second axis extending in the first direction, which is movable with respect to the housing and the developing roller in the first direction, and is movable with respect to the housing and the developing roller in the second direction. A shaft that can move with the rollers,
A first inclined surface located at one end of the shaft in the first direction and movable with the shaft, and the first inclined surface inclined with respect to the first direction, from the one end to the other end. A first inclined surface extending outward in the radial direction of the shaft toward
A developing cartridge characterized by being equipped with. The developing cartridge according to claim 39.
The first inclined surface is inclined at an acute angle with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 39 or 40.
The first inclined surface is located on the peripheral surface of the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 41.
The first inclined surface is inclined with respect to the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 42.
The first inclined surface is located on one side of the shaft in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 43.
One side of the shaft in the second direction is located closer to the developing roller than the other side of the shaft.
A developing cartridge characterized by that. The developing cartridge according to claim 39 to 44.
The angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 39 to 44.
The first inclined surface is
It has a first slope and a second slope arranged in the first direction.
The first slope is
In the first direction, it is arranged at a position far from the other end of the shaft from the second slope.
The inclination angle of the first slope with respect to the first direction is larger than the inclination angle of the second slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 46.
The angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the second slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 47.
A second inclined surface located at the other end of the shaft in the first direction and movable together with the shaft, and the second inclined surface inclined with respect to the first direction, from the one end to the other. A second inclined surface, which extends outward in the radial direction of the shaft toward the end.
A developing cartridge characterized by being equipped with. The developing cartridge according to claim 48.
The second inclined surface is inclined at an acute angle with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 48 or 49.
The second inclined surface is located on the peripheral surface of the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 48 to 50.
The second inclined surface is inclined with respect to the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 48 to 51.
The second inclined surface is located on one side of the shaft in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 48 to 52.
One side of the shaft in the second direction is located closer to the developing roller than the other side of the shaft.
A developing cartridge characterized by that. The developing cartridge according to claim 48 to 53.
The angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 48 to 53.
The second inclined surface is
It has a third slope and a fourth slope arranged in the first direction.
The third slope is
In the first direction, it is arranged at a position closer to the first slope than the fourth slope.
The inclination angle of the third slope with respect to the first direction is larger than the inclination angle of the fourth slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 55.
The angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the fourth slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 56.
The second direction is a direction that intersects the peripheral surface of the developing roller exposed on the outside of the housing.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 57.
The shaft is non-rotatable with respect to the housing with respect to the second axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 57.
The shaft is rotatable with respect to the housing with respect to the second axis.
The first inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 48 to 56.
The shaft is rotatable with respect to the housing with respect to the second axis.
The second inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 60.
The housing is
A container that can accommodate the developer and
A lid that covers the container and has a through hole that penetrates in the first direction.
Have,
The shaft is inserted into the through hole.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 61.
It is used for drum cartridges and
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 62.
It is used for drum cartridges including photoconductor drums.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
A developing cartridge characterized by that. The developing cartridge according to claim 63.
The first inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with a part of the drum cartridge.
The housing and the developing roller
When the first inclined surface slides with respect to the part of the drum cartridge, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 48 to 56.
It is used for drum cartridges including photoconductor drums.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
The first inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with the first receiving surface of the drum cartridge.
The second inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge.
The housing and the developing roller
When the first inclined surface slides with respect to the first receiving surface and the second inclined surface slides with respect to the second receiving surface, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 48 to 56 and 65.
The shaft
When the second inclined surface receives a pressing force from the other end of the shaft toward the one end in the first direction, the second inclined surface moves from the first position to the second position.
A developing cartridge characterized by that. The developing cartridge according to claim 66.
An elastic member that can be expanded and contracted in the first direction, one end of the elastic member in the first direction is connected to the first inclined surface, and the other end of the elastic member in the first direction is attached to the housing. Elastic members to be connected,
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 67.
The elastic member is a coil spring, which can expand and contract in the first direction between a first length and a second length shorter than the first length, and when the shaft is in the first position. The first length, and the second length when the shaft is in the second position.
The shaft is located at the second position when the coil spring has the first length, and is located at the first position when the coil spring has the second length.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 68.
The housing is
It has a first outer surface and a second outer surface separated from each other in the first direction, the first outer surface is located at one end of the housing in the first direction, and the second outer surface is the casing. Located at the other end of the body in the first direction,
The first inclined surface is
It is located on the first outer surface and separates from the developing roller in the second direction as it moves away from the first outer surface in the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 69.
A coupling for rotating the developing roller, further comprising a coupling arranged on the second outer surface.
A developing cartridge characterized by that. The developing cartridge according to claim 70.
The coupling is
In the second direction, it is arranged closer to the developing roller than the shaft and the first inclined surface.
A developing cartridge characterized by that. The developing cartridge according to claim 70 or 71.
The coupling receives a driving force
The shaft receives a pressing force in a direction from the second outer surface toward the first outer surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 70 to 72.
An electrode electrically connected to the developing roller and located on the first outer surface.
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 73.
The electrode is
In the second direction, it is arranged closer to the developing roller than the shaft and the first inclined surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 39 to 74.
An agitator that is rotatable about a third axis extending in the first direction and agitates the developer.
Further prepare
The developing roller
A developing cartridge characterized by being away from the agitator in the second direction. The developing cartridge according to claim 75.
The agitator is
In the second direction, it is arranged closer to the developing roller than the shaft.
A developing cartridge characterized by that. A housing that can accommodate the developer and
A developing roller that is rotatable about the first axis extending in the first direction, and one side of the peripheral surface of the developing roller in the second direction is exposed to the outside of the housing, and the circumference of the developing roller in the second direction is exposed. The other side of the surface is a developing roller located inside the housing, and
A shaft along a second axis extending in the first direction, which is movable with respect to the housing and the developing roller in the first direction, and is movable with respect to the housing and the developing roller in the second direction. A shaft that can move with the rollers,
A first inclined surface located at one end of the shaft in the first direction and movable together with the shaft, the first inclined surface inclined with respect to the first direction, and the casing in the first direction. A first inclined surface that moves away from the developing roller in the second direction as it moves away from the body.
A developing cartridge characterized by being equipped with. The developing cartridge according to claim 77.
The first inclined surface is inclined at an acute angle with respect to the first direction.
A developing cartridge characterized by that. The development cartridge according to claim 77 or 78.
The first inclined surface is located on the peripheral surface of the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 79.
The first inclined surface is inclined with respect to the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 80.
The first inclined surface is located on one side of the shaft in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 81.
One side of the shaft in the second direction is located closer to the developing roller than the other side of the shaft.
A developing cartridge characterized by that. The developing cartridge according to claim 77 to 82.
The angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 77 to 82.
The first inclined surface is
It has a first slope and a second slope arranged in the first direction.
The first slope is
In the first direction, it is arranged at a position far from the other end of the shaft from the second slope.
The inclination angle of the first slope with respect to the first direction is larger than the inclination angle of the second slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 84.
The angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the second slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 85.
A second inclined surface located at the other end of the shaft in the first direction and movable with the shaft, the second inclined surface inclined with respect to the first direction, said in the first direction. A second inclined surface, which approaches the developing roller in the second direction as it moves away from the housing.
A developing cartridge characterized by being further equipped with. The development cartridge according to claim 86.
A developing cartridge characterized in that the second inclined surface is inclined at an acute angle with respect to the first direction. The development cartridge according to claim 86 or 87.
The second inclined surface is located on the peripheral surface of the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 86 to 88.
The second inclined surface is inclined with respect to the shaft.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 86 to 89.
The second inclined surface is located on one side of the shaft in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 90.
One side of the shaft in the second direction is located closer to the developing roller than the other side of the shaft.
A developing cartridge characterized by that. The developing cartridge according to claim 86 to 91.
The angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 86 to 91.
The second inclined surface is
It has a third slope and a fourth slope arranged in the first direction.
The third slope is
In the first direction, it is arranged at a position closer to the first slope than the fourth slope.
The inclination angle of the third slope with respect to the first direction is larger than the inclination angle of the fourth slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 93.
The angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the fourth slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 94.
The second direction is a direction that intersects the peripheral surface of the developing roller exposed to the outside of the housing.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 95.
The shaft is non-rotatable with respect to the housing with respect to the second axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 96.
The shaft is rotatable with respect to the housing with respect to the second axis.
The first inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 86 to 94.
The shaft is rotatable with respect to the housing with respect to the second axis.
The second inclined surface is a conical surface or a polygonal pyramid surface that can rotate with the shaft with respect to the housing with respect to the second axis and has the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 98.
The housing is
A container that can accommodate the developer and
A lid that covers the container and has a through hole that penetrates in the first direction.
Have,
The shaft is inserted into the through hole.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 99.
It is used for drum cartridges and
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the drum cartridge.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 100.
It is used for drum cartridges including photoconductor drums.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
A developing cartridge characterized by that. The developing cartridge according to claim 101.
The first inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with a part of the drum cartridge.
The housing and the developing roller
When the first inclined surface slides with respect to the part of the drum cartridge, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 86 to 94.
It is used for drum cartridges including photoconductor drums.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
The first inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with the first receiving surface of the drum cartridge.
The second inclined surface is
When the shaft moves from the first position to the second position, it comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge.
The housing and the developing roller
When the first inclined surface slides with respect to the first receiving surface and the second inclined surface slides with respect to the second receiving surface, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 86 to 94 and 103.
The shaft
When the second inclined surface receives a pressing force from the other end of the shaft toward the one end in the first direction, the second inclined surface moves from the first position to the second position.
A developing cartridge characterized by that. The developing cartridge according to claim 104.
An elastic member that can be expanded and contracted in the first direction, one end of the elastic member in the first direction is connected to the first inclined surface, and the other end of the elastic member in the first direction is attached to the housing. Elastic members to be connected,
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 105.
The elastic member is a coil spring, which can expand and contract in the first direction between a first length and a second length shorter than the first length, and when the shaft is in the first position. The first length, and the second length when the shaft is in the second position.
The shaft is located at the second position when the coil spring has the first length, and is located at the first position when the coil spring has the second length.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 106.
The housing is
It has a first outer surface and a second outer surface separated from each other in the first direction, the first outer surface is located at one end of the housing in the first direction, and the second outer surface is the casing. Located at the other end of the body in the first direction,
The first inclined surface is
It is located on the first outer surface and separates from the developing roller in the second direction as it moves away from the first outer surface in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 107.
A coupling for rotating the developing roller, further comprising a coupling arranged on the second outer surface.
A developing cartridge characterized by that. The developing cartridge according to claim 108.
The coupling is
In the second direction, it is arranged closer to the developing roller than the shaft and the first inclined surface.
A developing cartridge characterized by that. The developing cartridge according to claim 108 or 109.
The coupling receives a driving force
The shaft receives a pressing force in a direction from the second outer surface toward the first outer surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 107 to 110.
An electrode electrically connected to the developing roller and located on the first outer surface.
A developing cartridge characterized by being further equipped with. The development cartridge according to claim 111.
The electrode is
In the second direction, it is arranged closer to the developing roller than the shaft and the first inclined surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 77 to 112.
An agitator that is rotatable about a third axis extending in the first direction and agitates the developer.
Further prepare
The developing roller
In the second direction, away from the agitator,
A developing cartridge characterized by that. The developing cartridge according to claim 113.
The agitator is
In the second direction, it is arranged closer to the developing roller than the shaft.
A developing cartridge characterized by that. A developing cartridge used for drum cartridges including photoconductor drums.
A housing that can accommodate the developer and
A developing roller that is rotatable about the first axis extending in the first direction, and one side of the peripheral surface of the developing roller in the second direction is exposed to the outside of the housing, and the circumference of the developing roller in the second direction is exposed. The other side of the surface is a developing roller located inside the housing, and
A shaft along a second axis extending in the first direction, which is movable with respect to the housing and the developing roller in the first direction, and is movable with respect to the housing and the developing roller in the second direction. A shaft that can move with the rollers,
A first cam provided at one end of the shaft in the first direction and movable with the shaft,
Equipped with
The first cam is
When moving in the first direction together with the shaft, the shaft and the housing are moved with respect to the photoconductor drum in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 115.
The first cam is
A first inclined surface that is inclined with respect to the first direction, and the distance from the shaft toward the outside in the radial direction of the shaft increases as the one end portion toward the other end portion. surface,
Have,
A developing cartridge characterized by that. The development cartridge according to claim 116.
The first inclined surface is inclined at an acute angle with respect to the first direction.
A developing cartridge characterized by that. The development cartridge according to claim 116 or 117.
The angle of the first inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The development cartridge according to claim 116 or 117.
The first inclined surface is
It has a first slope and a second slope arranged in the first direction.
The first slope is
In the first direction, it is arranged at a position far from the other end of the shaft from the second slope.
The inclination angle of the first slope with respect to the first direction is larger than the inclination angle of the second slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 119.
The angle of the first slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the second slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 120.
A second cam provided at the other end of the shaft in the axial direction and movable with the shaft,
Equipped with
The first cam and the second cam are
When moving together with the shaft in the first direction, the shaft and the housing are moved with respect to the photoconductor drum in the second direction.
A developing cartridge characterized by that. The developing cartridge according to claim 121.
The second cam is
A second inclined surface that is inclined with respect to the first direction, and the distance from the shaft toward the outside in the radial direction of the shaft becomes shorter as the other end of the shaft is directed toward the one end.
A developing cartridge characterized by having. The developing cartridge according to claim 122.
A developing cartridge characterized in that the second inclined surface is inclined at an acute angle with respect to the first direction. The developing cartridge according to claim 122 or 123.
The angle of the second inclined surface with respect to the first direction is 43 degrees or more and 47 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to claim 122 or 123.
The second inclined surface is
It has a third slope and a fourth slope arranged in the first direction.
The third slope is
In the first direction, it is arranged at a position closer to the first slope than the fourth slope.
The inclination angle of the third slope with respect to the first direction is larger than the inclination angle of the fourth slope with respect to the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 125.
The angle of the third slope with respect to the first direction is 43 degrees or more and 47 degrees or less.
The angle of the fourth slope with respect to the first direction is 12 degrees or more and 17 degrees or less.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 126.
The second direction is a direction that intersects the peripheral surface of the developing roller exposed to the outside of the housing.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 127.
The shaft is non-rotatable with respect to the housing with respect to the second axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 127.
The shaft is rotatable with respect to the housing with respect to the second axis.
The first cam is rotatable about the second axis with respect to the housing together with the shaft, and has a conical or polygonal pyramid shape with the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 127.
The shaft is rotatable with respect to the housing with respect to the second axis.
The second cam is rotatable about the second axis with respect to the housing together with the shaft, and has a conical or polygonal pyramid shape with the second axis as a central axis.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 130.
The housing is
A container that can accommodate the developer and
A lid that covers the container and has a through hole that penetrates in the first direction.
Have,
The shaft is inserted into the through hole.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 131.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the drum cartridge.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 132.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
A developing cartridge characterized by that. The developing cartridge according to claim 133.
The first cam is
When the shaft moves from the first position to the second position, it comes into contact with a part of the drum cartridge.
The housing and the developing roller
When the first cam slides with respect to the part of the drum cartridge, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 121 to 126.
The shaft
In the first direction, it is movable with respect to the housing between the first position and the second position.
The housing is
When the shaft moves from the first position to the second position, it moves in the second direction together with the shaft with respect to the photoconductor drum.
The first cam is
When the shaft moves from the first position to the second position, it comes into contact with the first receiving surface of the drum cartridge.
The second cam is
When the shaft moves from the first position to the second position, it comes into contact with a second receiving surface different from the first receiving surface of the drum cartridge.
The housing and the developing roller
When the first cam slides with respect to the first receiving surface and the second cam slides with respect to the second receiving surface, it moves in the second direction.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 121 to 126 and 135.
The shaft
When the second cam receives a pressing force from the other end of the shaft toward the one end in the first direction, the second cam moves from the first position to the second position.
A developing cartridge characterized by that. The developing cartridge according to claim 136.
An elastic member that can be expanded and contracted in the first direction, one end of the elastic member in the first direction is connected to the first inclined surface, and the other end of the elastic member in the first direction is attached to the housing. Elastic members to be connected,
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 137.
The elastic member is a coil spring, which can expand and contract in the first direction between a first length and a second length shorter than the first length, and when the shaft is in the first position. The first length, and the second length when the shaft is in the second position.
The shaft is located at the second position when the coil spring has the first length, and is located at the first position when the coil spring has the second length.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 138.
The housing is
It has a first outer surface and a second outer surface separated from each other in the first direction, the first outer surface is located at one end of the housing in the first direction, and the second outer surface is the casing. Located at the other end of the body in the first direction,
The first cam is
It is located on the first outer surface and separates from the developing roller in the second direction as it moves away from the first outer surface in the first direction.
A developing cartridge characterized by that. The developing cartridge according to claim 139.
A coupling for rotating the developing roller, further comprising a coupling arranged on the second outer surface.
A developing cartridge characterized by that. The developing cartridge according to claim 140.
The coupling is
In the second direction, it is arranged closer to the developing roller than the shaft and the first cam.
A developing cartridge characterized by that. The developing cartridge according to claim 140 or 141.
The coupling receives a driving force
The shaft receives a pressing force in a direction from the second outer surface toward the first outer surface.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 140 to 142.
An electrode electrically connected to the developing roller and located on the first outer surface.
A developing cartridge characterized by being further equipped with. The developing cartridge according to claim 143.
The electrode is
In the second direction, it is arranged closer to the developing roller than the shaft and the first cam.
A developing cartridge characterized by that. The developing cartridge according to any one of claims 115 to 144.
An agitator that is rotatable about a third axis extending in the first direction and agitates the developer.
Further prepare
The developing roller
A developing cartridge characterized by being away from the agitator in the second direction. The developing cartridge according to claim 145.
The agitator is
In the second direction, it is arranged closer to the developing roller than the shaft.
A developing cartridge characterized by that.

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