A process cartridge

Abstract

A process cartridge includes a photosensitive drum rotatable about a rotational axis extending in an axial direction, a developing roller contactable with or separable from the photosensitive drum, a separation force receiving member to receive a force of a separation member to move the developing roller and the photosensitive drum from a contact position in contact with each other to a separation position separated from each other, a power receiving member to receive a driving force of a power output member, the power receiving member including a plurality of movable portions, the plurality of movable portions having an open position and a closed position, the plurality of movable portions moving from the open position to the closed position when the developing roller and the photosensitive drum move from the contact position to the separation position, the plurality of movable portions receiving the driving force of the power output member in the open position, the plurality of movable portions being disconnected from the driving force of the power output member in the closed position.

Description

Technical Field

[0001] The present invention relates to the field of electronic photographic imaging, in particular to a processing box. Background Art

[0002] The prior art discloses a process cartridge that is detachably mounted in an electronic photographic imaging device. The process cartridge includes a housing for accommodating a developer, a developing roller for carrying the developer, a photosensitive drum for generating an electrostatic latent image, and a powder knife that abuts against the developing roller and controls the thickness of the developer layer delivered to the developing roller. The developing roller and the photosensitive drum are both rotatably supported on the housing. When the process cartridge is operating (i.e., during image formation), the developing roller contacts the photosensitive drum, so that the developer on the outer surface of the developing roller is delivered to the photosensitive drum to form a visible image, which is then transferred to paper, completing the printing process. When the process cartridge is not operating (i.e., during non-image formation), the developing roller is separated from the photosensitive drum. This prevents the developing roller from being deformed due to prolonged contact and compression with the photosensitive drum, and also prevents substances on the surface of the developing roller from precipitating and adhering to the photosensitive drum, thereby contaminating the photosensitive drum.

[0003] Although the developing roller and the photosensitive drum can be separated during the non-working period of the processing cartridge to avoid deformation of the developing roller and contamination of the photosensitive drum, the developing roller, the developing roller gear connected to one end of the developing roller in the length direction and other rotating parts are still rotating continuously at this time, so during the non-working period of the processing cartridge, the continuously rotating developing roller will continue to rub against the powder discharge knife, which accelerates the wear rate of the developing roller and shortens the service life of the developing roller. Summary of the Invention

[0004] To solve the above problems, the present invention provides a new process cartridge, which is mainly achieved through the following technical solutions:

[0005] A process cartridge is detachably mounted in an electronic photographic imaging device having a separation component and a power output component, comprising:

[0006] a photosensitive drum rotatable about a rotation axis extending in an axial direction;

[0007] a developing roller, capable of contacting or separating from the photosensitive drum;

[0008] a separation force receiving member capable of receiving the force of the separation member to move the developing roller and the photosensitive drum from a contact position in which they are in contact with each other to a separation position in which they are separated from each other;

[0009] a power receiving member capable of receiving the driving force of the power output member;

[0010] The power receiving member includes multiple movable parts, and the multiple movable parts have an open position and a closed position. When the developing roller and the photosensitive drum move from the contact position to the separation position, the multiple movable parts move from the open position to the closed position. In the open position, the multiple movable parts can receive the driving force of the power output member. In the closed position, the multiple movable parts are disconnected from the driving force of the power output member.

[0011] Furthermore, it also includes a first elastic component sleeved on the movable part, and the elastic force generated by the first elastic component has a tendency to force the movable part to move from the open position to the closed position.

[0012] Furthermore, the movable part has a movable part protrusion engaged with the power output member, and in the axial direction, the movable part has a first end and a second end opposite to the first end, the movable part protrusion is arranged at the first end, and the first elastic component is arranged closer to the first end relative to the second end.

[0013] Furthermore, it also includes a pushing component, which pushes the movable part to keep the movable part in the open position when the developing roller and the photosensitive drum are in the contact position; when the developing roller and the photosensitive drum are in the separation position, the pushing component does not push the movable part to allow the movable part to remain in the closed position.

[0014] Furthermore, it also includes a second elastic component. When the developing roller and the photosensitive drum move from the separation position to the contact position, the elastic force generated by the second elastic component can force the pushing component to move in the axial direction toward the side close to the movable part to push the movable part.

[0015] Furthermore, the plurality of movable portions are divided by the power receiving member in the rotation direction of the power receiving member.

[0016] Furthermore, there are three movable parts.

[0017] Furthermore, the power output member has a power output member recess, and the movable part has a movable part protrusion that can engage with the power output member recess. When the movable part is in the open position, projected along the axial direction, at least a part of the trajectory swept by the movable part protrusion after one rotation is outside the projection range of the power output member recess. When the movable part is in the closed position, projected along the axial direction, the trajectory swept by the movable part protrusion after one rotation is completely within the projection range of the power output member recess.

[0018] In the present invention, the power receiving part of the processing box is divided into multiple movable parts. Therefore, when the processing box is not in operation, the position of the developing roller and the photosensitive drum are changed, and the movable part can realize the position change between the closed position disconnected from the driving force of the power output part and the open position receiving the driving force of the power output part, so that all rotating parts supported on the first shell can stop rotating, achieving the technical effect of clutch, slowing down the wear rate of components such as the developing roller during the non-operating period of the processing box, and improving the service life of components such as the developing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an electronic photographic imaging device in the prior art;

[0020] Figure 2 This is a schematic diagram of a power output component of an electronic photographic imaging device in the prior art;

[0021] Figure 3 is a schematic diagram of a process cartridge in Example 1 of the present invention;

[0022] Figure 4 1 is an exploded schematic diagram of the process cartridge in Example 1 of the present invention;

[0023] Figure 5 In Example 1 of the present invention Figure 3 A partial enlarged schematic diagram of center C;

[0024] Figure 6 Schematic diagram of the driving end of the developing cartridge in Example 1 of the present invention;

[0025] Figure 7 1 is a schematic diagram of an exploded view of a driving end component of a developing cartridge in Example 1 of the present invention;

[0026] Figure 8 2 is a schematic diagram of another angle of decomposition of the driving end component of the developing cartridge in Example 1 of the present invention;

[0027] Figure 9 2 is a schematic diagram of another angled breakdown of the driving end component of the developing cartridge in Embodiment 1 of the present invention;

[0028] Figure 10 This is a schematic diagram of the power receiving member in Example 1 of the present invention when it is in a closed position;

[0029] Figure 11 This is a schematic diagram of the power receiving member in embodiment 1 of the present invention when it is in the open position;

[0030] Figure 12 is a schematic diagram of a covering member in Example 1 of the present invention;

[0031] Figure 13 This is a schematic diagram of the first separation cam in Example 1 of the present invention;

[0032] Figure 14 This is a schematic diagram of the second separation cam in Example 1 of the present invention;

[0033] Figure 15 Schematic diagram of the pushing component in Example 1 of the present invention;

[0034] Figure 16 is a schematic diagram of a power transmission member in Example 1 of the present invention;

[0035] Figure 17 is a schematic cross-sectional view of the process cartridge when the process cartridge is in position 1 in Example 1 of the present invention;

[0036] Figure 18 Schematic diagram of the driving connection portion when the process cartridge is in position 1 in Example 1 of the present invention;

[0037] Figure 19 is a schematic cross-sectional view of the drive connection portion when the process cartridge is in position 1 in Example 1 of the present invention;

[0038] Figure 20 Schematic diagram of the matching relationship between the power receiving member and the power output member when the process cartridge is in position 1 in Example 1 of the present invention;

[0039] Figure 21 is a schematic cross-sectional view of the process cartridge when the process cartridge is in position 2 in Example 1 of the present invention;

[0040] Figure 22 Schematic diagram of the driving connection portion when the process cartridge is in position 2 in Example 1 of the present invention;

[0041] Figure 23 is a schematic cross-sectional view of the drive connection portion when the process cartridge is in position 2 in Example 1 of the present invention;

[0042] Figure 24 Schematic diagram of the matching relationship between the power receiving member and the power output member when the process cartridge is in position 2 in Example 1 of the present invention;

[0043] Figure 25Schematic diagram of a plurality of movable parts mounted on a covering member in embodiment 2 of the present invention;

[0044] Figure 26 It is a schematic diagram of the covering component in Example 2 of the present invention.

[0045] Figure 27 It is a schematic cross-sectional view of the driving connection portion when the processing box is in position 1 in Example 3 of the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and technical effect of the embodiment of the present invention more clear, the technical solution of the process cartridge of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiment described is only a preferred embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0047] [Example 1]

[0048] In the following description, the box frame 90 supports the processing box B and is installed in the electronic photographic imaging device A along the direction from back to front. The length direction of the processing box B is the left-right direction, which is also referred to as the axial direction below. The power receiving member 111 is located at the right end of the processing box B in the left-right direction, and the end opposite to the right end is the left end, which is also referred to as the driving end, and the left end is referred to as the non-driving end.

[0049] Overall structure of an electronic photographic imaging device

[0050] like Figure 1-2 As shown, the prior art discloses an electronic photographic imaging device A, comprising: a mounting port 92; a door cover 80, having an open position not covering the mounting port 92 and a closed position covering the mounting port 92; a box rack 90, comprising four accommodating portions 91 for accommodating processing boxes B, the four accommodating portions 91 being arranged along the front-to-back direction, and the box rack 90 can be pushed forward into the electronic photographic imaging device A or pulled backward from the electronic photographic imaging device A when the door cover 80 is open; a separating component (not shown), which can move back and forth in the front-to-back direction under the control of the electronic photographic imaging device A; a power output member 50, constructed to receive and transmit rotational power from a motor (not shown) of the electronic photographic imaging device A, the power output member 50 having a power output member recess 51 constructed as a recess, and projected in the axial direction, the recess is constructed to be non-circular.

[0051] Overall structure of the process cartridge

[0052] like Figure 3-4 and Figure 17As shown, the present invention provides a processing box B, which can be detachably installed in the above-mentioned electronic photographic imaging device A. The processing box B includes: a first shell 130 and a second shell 140 that are combined with each other, the first shell 130 stores developer, and the second shell 140 is used to collect waste developer remaining after development. The developer box includes the first shell 130, and the drum box includes the second shell 140. The two are operably connected together, and the second shell 140 includes a driving end cover 140a provided at the right end of the second shell 140, a conductive end cover 140b at the left end, and a second shell provided between the driving end cover 140a and the conductive end cover 140b. The main body 140c, wherein the driving end protective cover 140a, the conductive end protective cover 140b, and the second shell body 140c are integrally formed, and optionally, the driving end protective cover 140a, the conductive end protective cover 140b, and the second shell body 140c can also be separately arranged; the photosensitive drum 102 can form an electrostatic latent image and can be rotatably supported on the second shell 140; the developing roller 101 can develop the electrostatic latent image on the photosensitive drum and can be rotatably supported on the first shell 130; when the processing box B is working, the developing roller 101 maintains close contact with the photosensitive drum 102 under the elastic force of the spring (not shown) on the processing box B. In addition, in order to prevent the developing roller 101 from being in contact with the photosensitive drum 102 for a long time when the processing box is not working, thereby causing the soft developing roller 101 surface to deform or the substances precipitated from the surface of the developing roller 101 to contaminate the photosensitive drum 102, the processing box B is also provided with a separation force receiving component (not shown), which is installed in the second shell 140. When the processing box B is not working, the separation component provided in the electronic photographic imaging device A can push the separation force receiving component to move. The moved separation force receiving component can drive the first shell 130 to move around the second shell 140 from the contact position where the developing roller 101 contacts the photosensitive drum 102 to the separation position where the developing roller 101 and the photosensitive drum 102 are separated. At this time, the developing roller 101 and the photosensitive drum 102 are separated and spaced a certain distance d apart. Therefore, when the processing box B is not working, the developing roller 101 and the photosensitive drum 102 can be separated to avoid the above-mentioned problems.

[0053] Structure of the power connection part

[0054] Next, we will refer to Figure 2-17 , to describe the structure of the power connection part, its overall layout scheme will be described first.

[0055] like Figure 7-9As shown, the power connection part is provided with the following sequence from right to left: a power receiving part 111, a first elastic part 110, a covering member 112, a first separation cam 113, a second separation cam 114, a pushing part 115, a second elastic part 116, and a power transmission part 117. The above-mentioned parts are coaxially arranged, which saves space on the right side of the processing box, makes the structure on the right side of the processing box more compact, and helps to reduce the size of the processing box. Next, the specific structure of the above-mentioned parts and the connection relationship between the parts will be introduced in detail with reference to the accompanying drawings.

[0056] like Figure 2 and Figure 10-11 As shown, the power receiving member 111 has a power receiving member convex portion 111d configured as a convex portion and a power receiving member concave portion 111e configured as a conical concave portion. The power receiving member convex portion 115d has a basic triangular structure. The power receiving member convex portion 111d can be matched with the power output member concave portion 51 of the power output member 50 to engage with the driving force from the electronic photographic imaging device A. Further, the power receiving member 111 is composed of a plurality of movable parts. Further, there are three movable parts, which have a simple structure and are stable in separation. The three movable parts are divided in the rotation direction of the power receiving member 111, that is, the second movable parts are arranged adjacent to each other. A movable portion 111a, a second movable portion 111b, and a third movable portion 111c. Optionally, the power receiving member 111 can also be divided into two movable portions or more than three movable portions, which is not limited. The convex portions on the three movable portions can constitute a power receiving member convex portion 111d. In the following description, the power receiving member convex portion 111d is also referred to as the movable portion convex portion 111d, and the power receiving member concave portion 111e is also referred to as the movable portion concave portion 111e. In the axial direction, the movable portion has a first end and a second end opposite to the first end, and the movable portion convex portion 111d is provided at the first end; wherein, Figure 10-11 The schematic diagram shows the movable parts at different positions. The first movable part 111a, the second movable part 111b and the third movable part 111c can be moved around as shown in FIG. Figure 19 The fulcrum 119 shown is at least radially outwardly directed toward the power receiving member 111 (i.e. Figure 11 P direction) moves a distance from Figure 10 The closed position in the Figure 11In the open position, the fulcrum 119 is the contact point between the first movable part 111a, the second movable part 111b, the third movable part 111c and the first separation cam 113. In this embodiment, the first movable part 111a, the second movable part 111b, and the third movable part 111c move in an outward flipping manner. The projection of the movable part convex portion 111d in the axial direction has a smaller projection range than that of the movable part in the open position. Specifically, along the axial direction, the trajectory 106 swept by the movable part convex portion 111d in the closed position after one rotation is projected (see specifically Figure 24 ) is completely within the projection range of the power output member recess 51, that is, the power receiving member 111 in this position cannot engage with the power output member 50 and cannot receive the driving force transmitted from the power output member 50, then the rotating components downstream of the power receiving member 111 will stop rotating due to the lack of power; in the open position, the first movable part 111a, the second movable part 111b, and the third movable part 111c are separated from each other at one end close to the power output member 50, and the trajectory 105 swept by the convex part 111d of the movable part after one rotation in the axial direction is projected in this open position (see for details). Figure 20 ) part is outside the projection range of the power output member recess 51, that is, the power receiving member 111 at this position can engage with the power output member 50, so that the driving force of the power output member 50 can be transmitted to the power receiving member 111, then the rotating parts downstream of the power receiving member 111 will start to rotate after receiving the power; further, the outer peripheral surface of the power receiving member 111 is also sleeved with a first elastic member 110, and the first elastic member 110 is arranged at the first end closer to the movable part protrusion 111d relative to the second end in the axial direction, and of course it can also be arranged at the second end, which is not limited to The first elastic component 110 is preferably a rubber rope that can be deformed in its own radial direction. Optionally, the first elastic component 110 can also be a component such as a spring that can be deformed in the radial direction. The elastic force generated by the first elastic component 110 has a tendency to keep the first movable part 111a, the second movable part 111b, and the third movable part 111c in the closed position. By providing the first elastic component 110, the first movable part 111a, the second movable part 111b, and the third movable part 111c can move back and forth between the closed position and the open position.

[0057] Figure 12A schematic diagram of the covering member 112 is shown. The covering member 112 is fixed to the right end of the first shell 130 and can be used to cover at least a portion of the power receiving member 111, the first separation cam 113, the second separation cam 114, the pushing member 115, the second elastic member 116, and the power transmission member 117 to support the above-mentioned components and prevent the above-mentioned components from being interfered with by external components. The covering member 112 has an inner surface 112a facing the first shell 130 and an outer surface 112b arranged opposite to the inner surface 112a. A covering member opening 112c exposing the upstream power receiving member 111 is also provided on the covering member 112 to allow the power receiving member protrusion 111d to engage with the power output member recess 51. At least one covering member protrusion 112d serving as a guide portion is formed on the inner surface 112a of the covering member 112 toward the side close to the first shell 130.

[0058] Figure 13 The schematic diagram of the first separation cam 113 is shown. The first separation cam 113 is provided with a first separation cam annular portion 113c, which has a substantially annular structure. The first separation cam 113 is also provided with a first separation cam protrusion 113a and a plurality of first separation cam protrusions 113d extending outward from the first separation cam annular portion 113c in the radial direction of the first separation cam annular portion 113c. The first separation cam protrusion 113a can extend into the control portion 140a1 configured as a recessed portion of the driving end protective cover 140a (see specifically Figure 5 ) in order to engage with the control portion 140a1; when the processing box B is not working, when viewed from the right end to the left end of the processing box B, the first shell 130 will rotate counterclockwise M around the second shell 140, causing the developing roller 101 and the photosensitive drum 102 to move from Figure 17 The contact position shown is moved to Figure 21 The phases are separated in the separation position shown, and the components supported on the first shell 130 will also rotate around the second shell 140 in the counterclockwise direction M by a certain angle, that is, they can rotate relative to the driving end cover 140a that always remains stationary, but since the first separation cam 113 is engaged with the control portion 140a1, the first separation cam 113 cannot rotate relative to the driving end cover 140a due to being restricted by the control portion 140a1, so the first separation cam 113 can only slide in the left and right directions; the first separation cam 113 also includes a first separation cam inclined portion 113b formed on the first separation cam protrusion 113d, and the first separation cam inclined portion 113b is formed to have an inclined surface facing the second separation cam 114.

[0059] Figure 14The schematic diagram of the second separation cam 114 is shown. The second separation cam 114 is provided with a second separation cam annular portion 114c, which also has a basically annular structure; a plurality of second separation cam protrusions 114a are formed on the second separation cam annular portion 114c toward the side close to the first separation cam 113, and a second separation cam protrusion 114a configured as a groove is formed between the second separation cam protrusion 114a and the first separation cam protrusion 113d in the circumferential direction of the second separation cam protrusion 114a. The second separation cam guide groove 114d is parallel to the axial direction of the wheel guide groove 114d, wherein the second separation cam guide groove 114d and the covering member protrusion 112d are parallel to the axial direction. In the processing box B, the covering member protrusion 112d as the guiding portion on the covering member 112 can be inserted into the second separation cam guide groove 114d as the guided portion and engage with it. The covering member protrusion 112d is engaged with the second separation cam guide groove 114d, so that the second separation cam 114 does not rotate relative to the covering member 112 in the circumferential direction, and ensures that the second separation cam 114 only rotates in the circumferential direction. The second separating cam inclined portion 114b is formed on the surface of the second separating cam protrusion 114a. The second separating cam inclined portion 114b is formed to have an inclined surface facing the first separating cam 113. In the process cartridge B, the second separating cam inclined portion 114b can abut against and slide relatively with the first separating cam inclined portion 113b. During the separation process of the developing roller 101 from the photosensitive drum 102, the first separating cam 113 is restricted by the driving end protective cover 140a and cannot rotate, while the second separating cam 113 is not rotated. The separation cam 114 can rotate with the first shell 130, so the second separation cam inclined portion 114b can generate a reaction force component in the axial direction toward the side close to the first shell 130 through the abutment with the first separation cam inclined portion 113b, so that in the process of separation of the developing roller 101 and the photosensitive drum 102, the second separation cam 114 can be pushed by the first separation cam 113 through the abutment and sliding of the second separation cam inclined portion 114b and the first separation cam inclined portion 113b, and move in the axial direction toward the side close to the first shell 130.

[0060] Figure 15The schematic diagram of the pushing component 115 is shown. The pushing component 115 is provided with a pushing component annular portion 115c, which also has a basically annular structure. The pushing component annular portion 115c abuts against the second separation cam annular portion 114c in the processing box B. That is, when the second separation cam 114 is pushed in the axial direction by the first separation cam 113, the pushing component 115 will overcome the elastic force generated by the second elastic component 116 abutting between the pushing component annular portion 115c and the power transmission member 117 and be pushed by the second separation cam 114 to move together in the axial direction; the pushing component 115 also includes a pushing component opening portion 115c1 provided on the pushing component annular portion 115c and penetrating the thickness direction of the pushing component annular portion 115c, and a plurality of pushing component opening portions 115c1 are arranged along the circle of the pushing component annular portion 115c Arranged at intervals in the circumferential direction; extending from the annular portion 115c of the pushing part toward the side close to the power receiving part 111, a pushing part cylindrical portion 115b and a pushing part convex portion 115a are formed, and the pushing part convex portion 115a has a basically conical convex structure, and the pushing part convex portion 115a is located in the accommodating space 115d formed by the cylindrical portion 115b of the pushing part, and there is also a certain spacing portion 115e between the two. In particular, it is noted that the power receiving part convex portion 111d at the first end of the movable part can engage with the power output part recess 51 of the power output part 50 and can receive the driving force transmitted from the power output part 50, while the movable part recess 111e provided at the second end of the movable part can be installed in the spacing portion 115e in a manner that covers at least a portion of the pushing part convex portion 115a and can transmit the driving force received by the movable part to the pushing part 115. In other words, The pushing component 115 is connected to the movable part and can receive the driving force transmitted by it; the pushing component protrusion 115a can be inserted into the movable part recess 111e and can move between pushing the movable part and not pushing the movable part. When the pushing component protrusion 115a pushes the movable part, the pushing component protrusion 115a can push the movable part to remain in the open position to receive the driving force of the power output member 50. When the pushing component protrusion 115a does not push the movable part, the pushing component protrusion 115a can allow the movable part to move from the open position to the closed position to disconnect the driving force connection with the power output member 50.

[0061] The second elastic component 116 abuts between the power transmission component 117 and the pushing component 115 in the axial direction. When the pushing component 115 moves in the axial direction toward the side close to the first shell 130, the pushing component 115 can overcome the elastic force of the second elastic component 116 and move, so that the movable part that loses the push moves from the open position to the closed position under the elastic force of the first elastic component 110. When the pushing component 115 moves in the axial direction toward the side away from the first shell 130, the elastic restoring force generated by the second elastic component 116 can force the pushing component 115 to move in the axial direction toward the side close to the movable part to push the movable part, so that the movable part remains in the open position.

[0062] Figure 16 A schematic diagram of the power transmission member 117 is shown. The power transmission member 117 has a accommodating cavity 117a with a space formed therein. In the accommodating cavity 117a, a plurality of power transmission member protrusions 117b are arranged at intervals along the circumferential direction of the power transmission member 117. The plurality of power transmission member protrusions 117b can be matched and inserted into the pushing member opening 115c1 of the pushing member 115, so that when the pushing member 115 is rotated by force, the pushing member 115 can drive the power transmission member 117 to rotate together; the power transmission member 117 also includes power transmission member gear teeth 117c arranged on the outer circumferential surface of the power transmission member 117, and the power transmission member gear teeth 117c can rotate with the developing roller gear (not shown) and other gears installed on the developing roller 101 which are also arranged at the right end of the first shell 130, and can drive the rotating parts such as the developing roller 101 to rotate, thereby realizing driving force transmission.

[0063] Power disconnect operation

[0064] Next, a description will be given of a disconnection operation of the power connection portion when the developing roller 101 and the photosensitive drum 102 are moved from the contact position where they are in contact to the separation position where they are separated.

[0065] Position 1

[0066] When the separating member of the electrophotographic image forming apparatus A and the separating force receiving member of the process cartridge B are spaced apart from each other, as shown in FIG. Figure 17 As shown, at this time, the developing roller 101 contacts the photosensitive drum 102, and this position is called "position 1" of the process cartridge B. Figure 18-20 The schematic diagram of the power connection portion when the process cartridge B is in position 1 is shown. At this time, the movable portion is in the position where it is pushed by the protruding portion 115a of the pushing member. Figure 11In the open position, the movable portion engages with the power output member 50 of the electrophotographic imaging device A and receives the driving force from the power output member 50. The movable portion then transmits the received driving force to the urging member 115 engaged with the movable portion, driving the urging member 115 to rotate. Subsequently, because the power transmission member 117 is provided with a plurality of power transmission member protrusions 117b that fit into the urging member openings 115c1 of the urging member 115, when the urging member 115 is rotated by the force, the urging member 115 drives the power transmission member 117 to rotate together with it. This, in turn, drives the development roller gear (not shown) and other gears mounted on the development roller 101 to rotate, thereby driving the development roller 101 and other rotating components to rotate. Therefore, the driving force input from the electrophotographic imaging device A to the upstream movable portion can be transmitted through the urging member 115 and the power transmission member 117 to the development roller gear and other gears, thereby driving the development roller 101 and other rotating components to rotate.

[0067] Position 2

[0068] When the process box B is not working, the electrophotographic imaging device A controls the separation component to move, such as Figure 21 As shown, the separated component after moving pushes the separation force receiving component of the processing box B to move and drives the first shell 130 to move around the second shell 140 from Figure 17 The contact position of the developing roller 101 and the photosensitive drum 102 is moved to Figure 21In the separation position where the developing roller 101 is separated from the photosensitive drum 102, during the movement of the first shell 130, the various components installed on the first shell 130 will rotate along the counterclockwise direction M with the first shell 130 relative to the stationary driving end cover 140a by a certain angle. However, since the first separation cam protrusion 113a of the first separation cam 113 in the power connection part is engaged with the control part 140a1 of the driving end cover 140a, the first separation cam 113 cannot rotate in the counterclockwise direction M of the first shell 130 and remains relatively stationary with the driving end cover 140a, and the second separation cam 114 is restricted by the covering member protrusion 112d on the covering member 112, so that it can only move in the axial direction relative to the covering member 112. Therefore, when the first shell 130 rotates, the second separation cam 114 will rotate in the counterclockwise direction M relative to the first separation cam 113 that remains stationary, so that the second separation cam inclined portion 114b of the second separation cam 114 rotates relative to the first separation cam The first separation cam inclined portion 113b of 113 slides, that is, the second separation cam 114 rotates and slides along the first separation cam inclined portion 113b of the first separation cam 113. During the rotational sliding process, the first separation cam 113 generates a reaction force in the axial direction toward the side close to the first shell 130, forcing the second separation cam 114 to move in the axial direction toward the side close to the first shell 130. As a linkage, the downstream pushing component 115 in contact with the second separation cam 114 will also be affected by the movement of the second separation cam 114 and overcome the elastic force of the second elastic component 116 and move in the axial direction toward the side close to the first shell 130; subsequently, the pushing component convex portion 115a provided on the pushing component 115 will also move a distance in the axial direction toward the side close to the first shell 130, so that the pushing component convex portion 115a and the movable part change from pushing to not pushing, and the movable part that loses the pushing will be moved under the elastic force of the first elastic component 110. Figure 11 Move the open position to Figure 10 The closed position, along the axial direction projection, the track 106 swept by the movable portion convex portion 111d after rotation in this closed position (see Figure 24 ) is completely within the projection range of the power output member recess 51, that is, the movable part at this position cannot engage with the power output member 50. Although the power output member 50 is still rotating, the unengaged movable part will not be able to receive the driving force transmitted from the power output member 50. After losing power, all rotating parts in the first shell 130 will stop rotating, achieving the technical effect of clutch, reducing the wear of components such as the developing roller, and increasing the service life of components such as the developing roller.

[0069] Power connection operation

[0070] When the process cartridge B needs to work, the electronic photographic imaging device A controls the separation component to move so that the separation component of the electronic photographic imaging device A no longer exerts force on the separation force receiving component of the process cartridge B. The first housing 130 rotates around the second housing 140 in a clockwise direction opposite to the counterclockwise direction M under the elastic restoring force of the elastic component, so that the developing roller 101 and the photosensitive drum 102 are moved from the center of the developing roller 101 to the center of the photosensitive drum 102. Figure 21 The separation position of the phase separation moves again to Figure 17 The subsequent power connection operation is opposite to the above-mentioned power disconnection operation, which will not be described here.

[0071] [Example 2]

[0072] Next, we will refer to the attached Figures 25-26 The second embodiment of the present invention will be described in detail. The parts of the process cartridge B that are the same as those in the first embodiment will not be described in detail in this second embodiment. The difference is that the movement of the first movable portion 211a, the second movable portion 211b, and the third movable portion 211c are different from those in the above embodiment. Specifically, Figures 25-26 As shown, a plurality of protrusions 212e are formed on the inner surface of the covering member opening 212c, and the protrusions 212e adjacent to each other form a plurality of covering member rail portions 212f in the circumferential direction of the covering member opening 212c. The covering member rail portion 212f is a groove structure extending in the radial direction of the covering member opening 212c. The covering member rail portion 212f allows the first movable part 211a, the second movable part 211b, and the third movable part 211c to move in the radial direction of the covering member opening 212c, so that the first movable part 211a, the second movable part 211b, and the third movable part 211c can move between an open position and a closed position.

[0073] [Example 3]

[0074] Next, we will refer to Figure 27 The third embodiment of the present invention is described in detail. The difference from the first or second embodiment is that the first movable part ( Figure 27), the movement modes of the second movable part 311b and the third movable part 311c are different from those in the above-mentioned embodiment. In this embodiment, the first movable part, the second movable part 311b and the third movable part 311c are movable between the open position and the closed position in a movable manner. Specifically, there is a sufficient gap 360 between the first movable part, the second movable part 311b and the third movable part 311c and the first separation cam 313 and the pushing part 315 in the radial direction, so that the pushing part protrusion 315a of the pushing part 315 can move the first movable part, the second movable part 311b and the third movable part 311c from the closed position to the open position by spreading the first movable part 311b and the third movable part 311c.

[0075] Beneficial effects

[0076] In the present invention, the power receiving part of the processing box is divided into multiple movable parts. Therefore, when the processing box is not in operation, the position of the developing roller and the photosensitive drum are changed, and the movable part can realize the position change between the closed position disconnected from the driving force of the power output part and the open position receiving the driving force of the power output part, so that all rotating parts supported on the first shell can stop rotating, achieving the technical effect of clutch, slowing down the wear rate of components such as the developing roller during the non-operating period of the processing box, and improving the service life of components such as the developing roller.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A process cartridge, detachably mounted in an electrophotographic imaging device having a separation component and a power output component, comprising: a photosensitive drum rotatable about a rotation axis extending in an axial direction; a developing roller, capable of contacting or separating from the photosensitive drum; a separation force receiving member capable of receiving the force of the separation member to move the developing roller and the photosensitive drum from a contact position in which they are in contact with each other to a separation position in which they are separated from each other; a power receiving member capable of receiving the driving force of the power output member; It is characterized in that the power receiving member includes multiple movable parts, and multiple movable parts have an open position and a closed position. When the developing roller and the photosensitive drum move from the contact position to the separation position, multiple movable parts move from the open position to the closed position. The processing box also includes a pushing component. In the open position, the developing roller and the photosensitive drum are in the contact position. The pushing component pushes the movable part to keep the movable part in the open position. Multiple movable parts can receive the driving force of the power output member. In the closed position, the developing roller and the photosensitive drum are in the separation position. The pushing component does not push the movable part to allow the movable part to remain in the closed position. Multiple movable parts are disconnected from the driving force of the power output member.

2. The process cartridge according to claim 1, wherein The invention also includes a first elastic component which is sleeved on the movable part, wherein the elastic force generated by the first elastic component has a tendency to force the movable part to move from the open position to the closed position.

3. The process cartridge according to claim 2, wherein: The movable part has a movable part protrusion engaged with the power output member. In the axial direction, the movable part has a first end and a second end opposite to the first end. The movable part protrusion is arranged at the first end, and the first elastic component is arranged closer to the first end relative to the second end.

4. The process cartridge according to claim 1, wherein A second elastic component is further included. When the developing roller and the photosensitive drum move from the separation position to the contact position, the elastic force generated by the second elastic component can force the urging component to move toward the side close to the movable part in the axial direction to urge the movable part.

5. The process cartridge according to claim 1, wherein The plurality of movable portions are divided from the power receiving member in a rotational direction of the power receiving member.

6. The process cartridge according to claim 1, wherein There are three movable parts.

7. The process cartridge according to claim 1, wherein The power output member has a power output member recess, and the movable part has a movable part protrusion that can engage with the power output member recess. When the movable part is in the open position, projected along the axial direction, at least a portion of the trajectory swept by the movable part protrusion after one rotation is outside the projection range of the power output member recess. When the movable part is in the closed position, projected along the axial direction, the trajectory swept by the movable part protrusion after one rotation is completely within the projection range of the power output member recess.

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