Processing box

Abstract

The present invention provides a process cartridge detachably mounted to an imaging device, the imaging device comprises a driving force output member having a retracted state and an extended state, before the process cartridge is mounted to the imaging device, the driving force output member is in the retracted state, and when the process cartridge is used for imaging, the driving force output member is converted from the retracted state to the extended state, the driving force output piece transmits driving force to the processing box; the processing box comprises a developing box, the developing box comprises an acting assembly with a first state and a second state which are different in position, and under the condition that a first driving force output part and a driving force receiving part are disengaged, when a driving force output part starts to rotate from a static state, the acting assembly forces the driving force output part to be converted from a retracted state to an extended state, in this way, the space needed when the acting piece moves can be reduced, and then the space occupied by the acting assembly is reduced.

Description

Technical Field

[0001] The present invention relates to an electronic photographic imaging technology, and in particular to a processing box that can be detachably mounted to an electronic photographic imaging device. Background Art

[0002] A processing cartridge is a consumable material that can be detachably installed to an imaging device. The processing cartridge includes a developing cartridge and a drum cartridge that are combined with each other. The drum cartridge includes a drum casing and a photosensitive drum rotatably arranged in the drum casing. The surface of the photosensitive drum is used to form an electrostatic latent image; the developing cartridge includes a developing casing, a developing roller rotatably arranged in the developing casing, and a developing roller driving gear for receiving a driving force to drive the developing roller to rotate. A powder bin for accommodating a developer is formed in the developing casing. The developing roller is used to carry the developer and transport the developer to the photosensitive drum, so that the electrostatic latent image on the surface of the photosensitive drum is developed.

[0003] The imaging device is provided with a driving force output member for outputting driving force, and the driving force output member is provided with a first driving force output part and a second driving force output part. The first driving force output part is located at the axial end of the driving force output member and is used to drive the photosensitive drum to rotate. The second driving force output part is arranged along the circumferential direction of the driving force output member, and the second driving force output part is used to engage with the developing roller driving gear to drive the developing roller to rotate.

[0004] The driving force output member has an extended state and a retracted state. Before the processing box starts working, the driving force output member is in a retracted state retracted into the interior of the imaging device. When the processing box starts working, the driving force output member is pulled out by the developing roller driving gear through the engagement of the second driving force output part with the developing roller driving gear, thereby realizing the combination of the driving force output member and the driving force receiving member in the processing box. At this time, the driving force output member is in an extended state.

[0005] In the processing box set up as above, the developing roller drive gear must be engaged with both the second driving force output part and other gears in the processing box to drive, for example, a stirring frame set in the developing shell and used to stir the developer to rotate. The developing roller drive gear set up in this way is large in size and has high precision requirements, which makes it difficult to produce. Summary of the Invention

[0006] The present invention provides a process cartridge adopting the following technical solution, and the technical solution is as follows:

[0007] A process cartridge is detachably mounted to an imaging device, the imaging device comprising a driving force output member, a main assembly, and a process cartridge accommodating space formed in the main assembly, the driving force output member comprising a first driving force output portion and a second driving force output portion coaxially arranged, the driving force output member having a retracted state and an extended state, and before the process cartridge is mounted in the process cartridge accommodating space, the driving force output member is in the retracted state retracted into the main assembly, and when the process cartridge is mounted in the process cartridge accommodating space and imaging is performed, the driving force output member changes from the retracted state to the extended state, and the driving force output member transmits driving force to the process cartridge;

[0008] The process cartridge includes:

[0009] A drum cartridge comprising a drum casing, a driving force receiving member, and a photosensitive drum rotatably disposed in the drum casing, wherein the photosensitive drum rotates about a first rotation axis and has a surface for forming an electrostatic latent image, and wherein the driving force receiving member is configured to be coupled to the first driving force output portion to receive a driving force for rotating the photosensitive drum;

[0010] A developing cartridge, coupled to the drum cartridge, comprising a developing housing and a developing roller rotatably disposed in the developing housing, the developing roller rotating about a second rotation axis, the second rotation axis being parallel to the first rotation axis, the direction parallel to the second rotation axis being the left-right direction, the developing roller being configured to carry a developer contained in the developing housing and supply the developer to the photosensitive drum to develop an electrostatic latent image;

[0011] The process cartridge further includes an action component for cooperating with the second driving force output portion and forcing the driving force output member to transition from a retracted state to an extended state;

[0012] At least a portion of the acting component has a first state and a second state with different positions. When the first driving force output part and the driving force receiving part are disengaged, when the driving force output part starts to rotate from a stationary state, the acting component engages with the second driving force output part, forcing the driving force output part to transition from a retracted state to an extended state. When the driving force output part is in the extended state, the first driving force output part and the driving force receiving part are combined with each other, and at least a portion of the acting component is in the second state.

[0013] The acting component includes an acting member body, an acting member protruding from the acting member body, and at least one retaining member, wherein the acting member is used to engage with the second driving force output portion, and the retaining member is used to force the acting member to transform toward the first state.

[0014] During the conversion process between the first state and the second state, the acting member performs linear motion or curved motion.

[0015] The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane, and the second plane is also parallel to the left-right direction, and the first plane and the second plane are both perpendicular to the third plane;

[0016] When the straight line where the moving direction of the action member is located is parallel to the first plane and perpendicular to the left and right directions,

[0017] Alternatively, when the straight line where the movement direction of the action member is located is in the first plane and is perpendicular to the left and right directions,

[0018] Alternatively, the straight line on which the movement direction of the actuating member lies is located in the third plane, and the straight line on which the movement direction of the actuating member lies also intersects the first plane;

[0019] The acting member in the second state is closer to the second rotation axis than the acting member in the first state.

[0020] The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane, and the second plane is also parallel to the left-right direction;

[0021] When the straight line of the action member and the direction of motion is parallel to the second plane and perpendicular to the left and right directions,

[0022] Alternatively, the straight line on which the movement direction of the actuating member lies is located in the second plane and is perpendicular to the left-right direction;

[0023] The acting member in the second state is further away from the first plane than the acting member in the first state.

[0024] Along the left-right direction, one end of the process cartridge provided with the driving force receiving member is the driving end, and the other end is the non-driving end;

[0025] The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane, and the second plane is also parallel to the left-right direction;

[0026] When the straight line where the moving direction of the action member is located is parallel to the first plane and parallel to the left and right directions,

[0027] Alternatively, the straight line on which the movement direction of the actuating member lies is located in the second plane and is parallel to the left-right direction;

[0028] Along the moving direction of the acting member, the acting member in the second state is farther away from the driving end or farther away from the non-driving end than the acting member in the first state.

[0029] The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane and parallel to the left and right directions, the first plane and the second plane are perpendicular to the third plane at the same time, and during the conversion of the active member between the first state and the second state, the straight line where the movement direction of the active member is located is inclined relative to the first plane, the second plane and the third plane at the same time.

[0030] When the driving force output member is in the retracted state and the acting assembly is in the first state, as the driving force output member rotates, the driving force output member changes from the retracted state to the extended state, and the acting assembly changes from the first state to the second state.

[0031] When the driving force output member is in the retracted state and the acting component is in the second state, as the driving force output member rotates, the acting component first changes from the second state to the first state, and as the driving force output member changes from the retracted state to the extended state, the acting component changes from the first state to the second state.

[0032] When the first driving force output part and the driving force receiving part are disengaged, when the driving force output part starts to rotate from a standstill, under the triggering action of the first trigger part provided in the imaging device or the first trigger part provided in the processing box, the acting part changes from the first state to the second state; when the first trigger part is provided in the processing box, the first trigger part is provided to follow the rotating part in the processing box in linkage, and the rotating part includes at least a developing roller and a photosensitive drum.

[0033] Compared with the prior art, the processing box provided by the present invention is provided with an acting component, and the imaging device is provided with a driving force output member for outputting driving force. The acting member in the acting component can engage with the second driving force output part. During the rotation of the driving force output member, the acting member does not rotate. In this way, the space required for the action member to move can be reduced, thereby reducing the space occupied by the acting component. In addition, the load of the imaging device can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional diagram of the process cartridge according to the present invention after being combined.

[0035] Figure 2 This is an exploded view of the driving force output member, the drum box of the processing box, and the developing box involved in the present invention.

[0036] Figure 3 It is a perspective view of some parts of the developing cartridge of the process cartridge according to the present invention.

[0037] Figure 4 It is a perspective view of a driving force output member of an imaging device according to the present invention.

[0038] Figure 5It is an exploded view of the driving force output member and some components of the developing box involved in the present invention.

[0039] Figure 6 It is a three-dimensional view of the functional components of the processing box involved in the present invention.

[0040] Figure 7A This is a perspective view of the processing cartridge according to the present invention when the active component is engaged with the second driving force output portion.

[0041] Figure 7B It is a plan view of the processing box according to the present invention when the active component is engaged with the second driving force output portion.

[0042] Figure 8A It is a stereoscopic view of the functional components, first end cover, transfer component, photosensitive drum and developing roller of the processing box involved in the present invention.

[0043] Figure 8B This is a plan view of the main body of the effector, the developing roller, and the photosensitive drum as viewed from right to left.

[0044] Figure 8C It is a plan view schematically showing the positional relationship between the working member of the processing box of the present invention, the developing roller and the photosensitive drum in the first state and the second state.

[0045] Figure 9 It is a three-dimensional view of the first end cover of the processing box involved in the present invention. DETAILED DESCRIPTION

[0046] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] The process cartridge 100 can be detachably mounted to an image forming apparatus, such as Figure 1 and Figure 2 As shown, the processing box 100 includes a developer box 10 and a drum box 20 that are combined with each other. The drum box 20 includes a drum shell 1 and a photosensitive drum 2 rotatably arranged in the drum shell 1. The photosensitive drum 2 rotates around a first rotation axis L1 and along a first rotation direction R1. The surface of the photosensitive drum 2 is used to form an electrostatic latent image; the developer box 10 includes a developer shell 3 and a developer roller 4 rotatably arranged in the developer shell 3. The developer roller 4 rotates around a second rotation axis L2. The first rotation axis L1 and the second rotation axis L2 are parallel to each other. A powder bin 31 for accommodating a developer is formed inside the developer shell 3. The developer roller 4 is used to carry the developer and supply the developer to the photosensitive drum 2 arranged opposite to the developer roller 4, so that the electrostatic latent image is developed. The drum shell 1 and the developer shell 3 can be regarded as at least a part of the processing box shell; for the convenience of the following description and understanding, the direction parallel to the second rotation axis L2 is defined as the left and right direction.

[0048] like Figure 2 、 Figure 4 and Figure 5 As shown, the imaging device is provided with a driving force output member 200 for outputting a driving force. The driving force output by the driving force output member 200 is at least used to directly drive the photosensitive drum 2 to rotate. The drum cartridge 20 further includes a driving force receiving member 21 and a driving force transmitting member 22 (as shown in FIG. Figure 8A As shown in FIG, the driving force receiving member 21 is used to receive the driving force from the driving force output member 200, and the driving force transmitting member 22 is used to transmit the driving force received by the driving force receiving member 21 to the developing roller 4; specifically, the driving force output member 200 includes a driving force output member main body 200a and a first driving force output portion 200b and a second driving force output portion 200c coaxially arranged on the driving force output member main body 200a, the first driving force output portion 200b is used to combine with the driving force receiving member 21, so that the photosensitive drum 2 is driven, and the second driving force output portion 200c is used to transmit the driving force received by the driving force receiving member 21 to the developing roller 4; Part 200c is used to cooperate with the following acting component 40 so that the driving force output member 200 moves toward the photosensitive drum 2; along the left and right directions, the first driving force output part 200b is arranged at the axial end of the driving force output member main body 200a, and the second driving force output part 200c is arranged in the circumferential direction of the driving force output member main body 200a, and when the processing box 100 is installed to the imaging device, compared with the second driving force output part 200c, the first driving force output part 200b is closer to the processing box 100 / driving force receiving member 21.

[0049] Along the left-right direction, one end of the process cartridge 100 provided with the driving force receiving member 21 is a driving end, and the other end is a non-driving end. The first end cover 30 described below is located at the driving end.

[0050] The imaging device also includes a main component and a processing box accommodating space formed in the main component. The driving force output member 200 has an extended state and a retracted state. Before the processing box 100 is installed in the processing box accommodating space, the driving force output member 200 is in a retracted state retracted into the main component. When the processing box 100 is installed in the processing box accommodating space and imaging is performed, the driving force output member 200 is pulled out from the inside of the imaging device by the acting component 40, or in other words, the driving force output member 200 is changed from the retracted state to the extended state, so that the driving force output member / second driving force output part 200c is combined with the driving force receiving member 21, and the driving force output member 200 transmits driving force to the processing box 100. At this time, the driving force output member 200 is in an extended state, and the driving force output member 200 can rotate along the second rotation direction R2.

[0051] In some embodiments, the second driving force output portion 200c is configured as a helical gear. The second driving force output portion 200c includes a plurality of teeth 200c1 , wherein a tooth groove 200c2 is formed between two adjacent teeth 200c1 .

[0052] like Figure 2 As shown, the developing roller 4 includes a developing roller shaft 4a and a developing roller layer 4b arranged radially outside the developing roller shaft 4a, and the developing roller layer 4b is used to carry the developer. The developing box 10 also includes a developing roller driving gear 5, which is installed on the developing roller shaft 4a, or in other words, the developing roller driving gear 5 is supported by the developing roller shaft 4a. In some embodiments, the developing roller driving gear 5 is used to receive the driving force from the driving force transmission member 22 of the drum box 20 to drive the developing roller 4 to rotate.

[0053] like Figure 3 、 Figure 5 and Figure 6 As shown, the processing box shell also includes a first end cover 30 that is detachably connected to the drum shell 1 / developing shell 3, and the processing box 100 also includes an acting component 40 at least part of which is configured to be movable relative to the processing box shell. The acting component 40 is used to cooperate with the driving force output member 200 to force the driving force output member 200 to move from a retracted state to an extended state. The driving force receiving member 21 can be combined with the driving force output member 200 / the first driving force output portion 200b to receive the driving force. In the following, the acting component 40 is described as being installed on the first end cover 30.

[0054] In some embodiments, the processing box 100 also includes a transmission component 50 for transmitting driving force and a support bracket (not shown) for at least supporting the transmission component 50. The component in the processing box 100 extending from the developing housing 3 or the drum housing 1 or the first end cover 30, or the support bracket, etc., can be regarded as a processing box housing as long as it can stably support the action component 40.

[0055] The action component 40 includes an action member body 41, an action member 42 and a retaining member 43. The action member 42 is configured to protrude from the action member body 41. The action member 42 is used to engage with the second driving force output part 200c. During the process of the second driving force output part 200c rotating as the driving force output member body 200a rotates, the action member 42 forces the driving force output member 200 to move toward the direction close to the photosensitive drum 2, that is, the action member 42 forces the driving force output member 200 to change from a retracted state to an extended state.

[0056] The action component 40 / action member 42 can move relative to the processing box housing. Specifically, the action component 40 / action member 42 has a first state and a second state with different positions. When the action member 42 is in the first state, such as Figure 7A and Figure 7B As shown, the action member 42 can engage with the second driving force output portion 200c, specifically, the action member 42 can enter the tooth groove 200c2, at this time, the action member 42 abuts against the tooth 200c1 at the abutment point S, and under the action of external force, the action member 42 can be transformed from the first state to the second state. When the action member 42 is in the second state, the driving force output member 200 is in an extended state. At this time, the driving force output member 200 is combined with the driving force receiving member 21, and the action member 42 cannot engage with the second driving force output portion 200c, specifically, the action member 42 does not interact with the tooth 200c1; the external force can come from the driving force output member 200, or the processing box housing, or a component that rotates with the photosensitive drum 2, or a component that rotates with the developing roller 4.

[0057] At least one retaining member 43 is provided, and the retaining member 43 is used to force the acting member 42 to transform toward the first state.

[0058] In some embodiments, as Figure 4 and Figure 6 As shown, the acting member 42 has an abutted portion 42a, the driving force output member 200 / driving force output member main body 200a has an abutting portion 200a1, the abutting portion 200a1 and the first driving force output portion 200b are respectively located at both ends of the second driving force output portion 200c, or in other words, the second driving force output portion 200c is located between the abutting portion 200a1 and the first driving force output portion 200b; when the driving force output member 200 is in the extended state, the abutting portion 200a1 is used to abut / squeeze the abutted portion 42a against each other, forcing the acting member 42 to change from the first state to the second state. In some specific embodiments, the abutted portion 42a is formed as a surface of the acting member 42 that faces at least upward, and the abutting portion 200a1 is set to be the radial outer surface of the driving force output member main body 200a.

[0059] In some embodiments, the abutting portion 200a1 is provided on a side of the driving force output member body 200a facing the process cartridge housing.

[0060] like Figure 7A and Figure 7BAs shown, when the driving force output member 200 and the driving force receiving member 21 are disengaged from each other, when the driving force output member 200 / driving force output member main body 200a starts to rotate, the acting member 42 abuts against the second driving force output portion 200c at the abutment point S. Since the acting member 42 does not rotate, the acting member 42 will generate a force F on the driving force output member 200 to pull the second driving force output member 200 toward the photosensitive drum 2. The force F causes the driving force output member 200 to move from the retracted state to the extended state. Figure 8A As shown, the plane passing through the first rotation axis L1 and the second rotation axis L2 is the first plane M, the first plane M is parallel to the left and right direction, the second plane N is perpendicular to the first plane M, and the second plane N is also parallel to the left and right direction, the first plane M and the second plane N are perpendicular to the third plane P at the same time, therefore, the third plane P is also perpendicular to the left and right direction.

[0061] During the conversion process of the active member 42 between the first state and the second state, the active member 42 performs linear motion, or the active member 42 performs curvilinear motion. When the active component 40 / active member 42 performs curvilinear motion relative to the processing box housing, the active member 42 does not perform circular motion; the movement direction of the active member 42 can be parallel to any one of the first plane M, the second plane N and the third plane P, or the movement direction of the active member 42 can be inclined relative to any one of the first plane M, the second plane N and the third plane P.

[0062] In some embodiments, as Figure 8B As shown, when the straight line where the movement direction of the action member 42 is located is parallel to the first plane M and perpendicular to the left and right directions, or the straight line where the movement direction of the action member 42 is located is within the first plane M and perpendicular to the left and right directions, the action member 42 in the second state will be closer to the second rotation axis L2, or farther away from the first rotation axis L1, than the action member 42 in the first state.

[0063] In some embodiments, as Figure 8CAs shown, when the straight line where the movement direction of the action member 42 is located is located in the third plane P, the straight line where the movement direction of the action member 42 is located can also intersect with the first plane M. Taking the geometric center of the action member 42 or the center of gravity of the action member 42 or the contact point S between the action member 42 and the second driving force output part 200c as a reference, the action member 42 in the first state is projected into the third plane P perpendicular to the left and right directions to obtain a first projection point A, and the action member 42 in the second state is projected into the third plane P to obtain a second projection point B. The first projection point A is then projected onto the first plane M to obtain a third projection point C, and the second projection point B is projected onto the first plane M to obtain a fourth projection point D. Compared with the third projection point C, the fourth projection point D is closer to the second rotation axis L2, or, compared with the third projection point C, the fourth projection point D is farther away from the first rotation axis L1.

[0064] In some embodiments, when the straight line on which the movement direction of the active member 42 lies is parallel to the second plane N and perpendicular to the left-right direction, or the straight line on which the movement direction of the active member 42 lies is within the second plane N and perpendicular to the left-right direction, the active member 42 in the second state is farther away from the first plane M than the active member 42 in the first state.

[0065] In some embodiments, when the straight line in which the movement direction of the active member 42 lies is parallel to the first plane M and parallel to the left-right direction, or the straight line in which the movement direction of the active member 42 lies is located in the second plane N, and the straight line in which the movement direction of the active member 42 lies is also parallel to the left-right direction, along the movement direction of the active member 42, the active member 42 in the second state is farther away from the non-driving end or farther away from the driving end than the active member 42 in the first state.

[0066] In some embodiments, when the straight line in which the movement direction of the active member 42 lies is tilted relative to the first plane M, the second plane N, and the third plane P at the same time, in this deformation mode, the two states of the active member 42 still have the above-mentioned relative positional relationship.

[0067] To sum up, when the driving force output member 200 / the first driving force output part 200b is disengaged from the driving force receiving member 21, the driving force output member 200 is in a retracted state, and the acting component 40 / the acting member 42 can be in either the first state or the second state. When the driving force output member 200 starts to rotate from a stationary state, the acting component 40 engages with the second driving force output part 200c, forcing the driving force output member 200 to transition from the retracted state to the extended state. When the driving force output member 200 is in the extended state, the first driving force output part 200b is combined with the driving force receiving member 21, and the acting component 40 is in the second state.

[0068] In some embodiments, when the driving force output member 200 is in the retracted state and the action component 40 is in the first state, as the driving force output member 200 rotates, the driving force output member 200 changes from the retracted state to the extended state, and the action component 40 changes from the first state to the second state.

[0069] In some other embodiments, when the driving force output member 200 is in a retracted state and the acting component 40 is in the second state, as the driving force output member 200 rotates, a second trigger member provided in the imaging device or the processing box forces the acting component 40 to change from the second state to the first state, and when the driving force output member 200 changes to an extended state, the acting component 40 changes from the first state to the second state again.

[0070] In some embodiments, the processing box 100 is further provided with a first triggering member for forcing the action member 42 to change from the first state to the second state. When the action member 42 is not triggered by the first triggering member, the action member 42 remains in the first state.

[0071] The first triggering member and the second triggering member can be the same component or two different components.

[0072] In some specific embodiments, the first trigger member can be, for example, the above-mentioned abutment portion 200a1, or the first trigger member is configured as a component in the processing box 100 that is linked to the developing roller drive gear 5, or the first trigger member is configured as a component in the processing box 100 that is linked to the photosensitive drum 2, that is, the first trigger member is configured as a component that is linked to the rotating member (for example: developing roller 4, photosensitive drum 2) in the processing box 100; in another embodiment, the first trigger member can also be configured as a component in the imaging device that is linked to the driving force output member 200.

[0073] In summary, the first triggering member can be a component provided in the process cartridge 100 or a component provided in the imaging device.

[0074] In some embodiments, when the first trigger member is configured to be a component that can follow the rotating member in linkage, when the imaging device does not perform an imaging action, the first trigger member no longer triggers the action member 42. Under the action of the retaining force applied by the retaining member 43 to the action member 42, the action member 42 changes from the second state to the first state. At this time, the action member 42 enters the tooth groove 200c2 of the second driving force output part 200c again, that is, the action member 42 is engaged with the second driving force output part 200c again, which is equivalent to the action member 42 jamming the driving force output member 200, thereby suppressing the slight rotation of the driving force output member 200 caused by vibration of the imaging device or other reasons, and preventing the driving force output member 200 from being disengaged from the driving force receiving member 21. In some embodiments, the retaining member 43 is configured as an elastic member, one end of the elastic member abuts against the action member body 41, and the other end of the elastic member abuts against the first end cover 30. During the process of the action member 42 changing from the first state to the second state, the retaining member 43 undergoes elastic deformation. During the process of removing the processing box 100 from the imaging device, under the action of the elastic force (a type of retaining force) of the retaining member 43, the action member 42 changes from the second state to the first state.

[0075] In some embodiments, the retaining member 43 can also be set as a magnetic member. When the processing box 100 is taken out from the imaging device, the active member 42 is transformed from the second state to the first state under the action of the magnetic force (a type of retaining force) of the retaining member 43.

[0076] In some embodiments, the acting assembly 40 / acting member 42 is located to the right of the developing roller 4 / developing roller shaft 4 a in the left-right direction.

[0077] In some embodiments, as Figure 8A and Figure 8B As shown, along the left and right directions, when the acting component 40 / acting member 42 is in the first state, at least the acting member 42 does not pass through the second rotation axis L2, and in the first plane M, the acting member 42 is located between the first rotation axis L1 and the second rotation axis L2. Through such an arrangement, during the engagement of the acting member 42 with the second driving force output portion 200c2, the developing roller 4 is less affected by vibration. At the same time, the space of the processing box 100 can be more fully utilized, and the magnitude and direction of the force F generated between the acting member 42 and the teeth 200c1 can be more easily controlled.

[0078] like Figure 5 and Figure 9As shown, the first end cover 30 is provided with a limiting portion 30a for limiting the falling off of the action component 40, and a receiving groove 30a1 for accommodating at least a part of the action component 40 is formed in the limiting portion 30a, at least the retaining member 43 is accommodated by the receiving groove 30a1, and the action member body 41 is used to interact with the limiting portion 30a and is installed on the first end cover 30. Specifically, along the rotation direction R2, the outer surface of the action member body 41 and the inner surface of the limiting portion 30a abut / press each other, so that during the rotation process of the driving force output member 200, or when the action member 42 pulls the driving force output member 200 out During the interaction, the action member 42 will not rotate, and the limiting portion 30a also includes a limiting portion 30a2 for preventing the action member body 41 from falling off from the limiting portion 30a / first end cover 30. In the up and down directions, the limiting portion 30a2 is located above the accommodating groove 30a1. During the conversion of the action member 42 between the first state, the second state, and the first state and the second state, the action member body 41 is always positioned on the first end cover 30 by the limiting portion 30a and will not fall off from the limiting portion 30a. This is conducive to the action member 42 being converted from the second state to the first state under the action of the retaining member 43.

[0079] In some embodiments, the processing box 100 can be provided with multiple acting members 42, and the multiple acting members 42 are engaged with the teeth 200c1 of the second driving force output part 200c at the same time to ensure that sufficient pulling force F is generated to pull out the driving force output member 200, or, during the rotation of the driving force output member 200, the multiple acting members 42 are engaged with the teeth 200c1 of the second driving force output part 200c in turn to ensure that the driving force output member 200 can be effectively pulled out.

[0080] In some embodiments, the position of the action member 42 in the left-right direction can be changed according to design requirements. For example, when the driving force output member 200 is to have a larger movement distance in the left-right direction, the action member 42 can be set away from the photosensitive drum 2. Because the structure of the action component 40 is simple and the action component 40 is installed on the first end cover 30, it is relatively easy to change the position of the action member 42 in the left-right direction. Such a setting can widen the scope of application of the processing box 100.

[0081] [Beneficial Effects]

[0082] Compared with the prior art, the process cartridge 100 provided by the present invention has the following beneficial effects:

[0083] In a first aspect, the process cartridge 100 is provided with an acting assembly 40, and the imaging device is provided with a driving force output member 200 for outputting a driving force. The acting member 42 in the acting assembly 40 can engage with the second driving force output portion 200c in the driving force output member 200. During the rotation of the driving force output member 200, the acting member 42 does not rotate. Specifically, the acting member 42 can perform linear motion or curved motion. The motion direction of the acting member 42 is parallel to or intersects with the first plane M. When the motion direction of the acting member 42 intersects with the first plane M, preferably, the motion direction of the acting member 42 is perpendicular to the first plane M.

[0084] Setting the action member 42 to be non-rotating can reduce the space required for the action member 42 to move, thereby reducing the space occupied by the action component 40. In addition, setting the action member 42 to be non-rotating can also reduce the load of the imaging device.

[0085] Secondly, the acting member 42 has an abutted portion 42a, and the driving force output member 200 has an abutting portion 200a. During the movement of the driving force output member 200 toward the photosensitive drum 2, the abutting portion 200a and the abutted portion 42a abut / squeeze each other, forcing the acting member 42 to change from the first state to the second state. When the driving force output member 200 / first driving force output portion 200b transmits the driving force to the driving force receiving member 21, the acting member 42 can be maintained in the second state, and the acting component 40 / acting member 42 will not affect the transmission of the driving force, and thus will not affect the normal use of the processing box 100.

[0086] In addition, the abutting portion 200 a at this time is the first triggering member, that is, there is no need to separately provide a first triggering member in the process box 100 , thereby reducing the number of components of the process box 100 .

[0087] On the third aspect, when the first trigger member is configured as a component that can follow the rotating member, when the imaging device does not perform an imaging action, the action member 42 returns from the second state to the first state. At this time, the action member 42 can enter the tooth groove 200c2 again, that is, the action member 42 is engaged with the second driving force output part 200c again, which is equivalent to restricting the rotation of the driving force output member 200, thereby preventing the driving force output member 200 from being disengaged from the driving force receiving member 21.

[0088] Fourthly, the action component 40 of the present invention can be installed on the first end cover 30, and the first end cover 30 is provided with a limiting portion 30a for limiting the falling off of the action component 40, which can simplify the assembly process of the processing box.

[0089] Fifthly, the action component 40 can be installed on the first end cover 30, which can reduce the possibility of interference between the action component 40 and other components in the processing box 100, improve the structural layout of the processing box 100 / developing box 10, and reduce the manufacturing cost of the processing box 100 / developing box 10.

Claims

1. A process cartridge detachably mounted to an imaging device, the imaging device comprising a driving force output member, a main assembly, and a process cartridge accommodating space formed in the main assembly, the driving force output member comprising a first driving force output portion and a second driving force output portion coaxially arranged, the driving force output member having a retracted state and an extended state, wherein before the process cartridge is mounted in the process cartridge accommodating space, the driving force output member is in the retracted state retracted into the main assembly, and when the process cartridge is mounted in the process cartridge accommodating space and imaging is performed, the driving force output member transitions from the retracted state to the extended state, thereby transmitting driving force to the process cartridge; It is characterized in that The process cartridge includes: A drum cartridge comprising a drum casing, a driving force receiving member, and a photosensitive drum rotatably disposed in the drum casing, wherein the photosensitive drum rotates about a first rotation axis and has a surface for forming an electrostatic latent image, and wherein the driving force receiving member is configured to be coupled to the first driving force output portion to receive a driving force for rotating the photosensitive drum; A developing cartridge, coupled to the drum cartridge, comprising a developing housing and a developing roller rotatably disposed in the developing housing, the developing roller rotating about a second rotation axis, the second rotation axis being parallel to the first rotation axis, the direction parallel to the second rotation axis being the left-right direction, the developing roller being configured to carry a developer contained in the developing housing and supply the developer to the photosensitive drum to develop an electrostatic latent image; The process cartridge further includes an action component for cooperating with the second driving force output portion and forcing the driving force output member to transition from a retracted state to an extended state; At least a portion of the acting component has a first state and a second state with different positions. When the first driving force output part and the driving force receiving part are disengaged, when the driving force output part starts to rotate from a stationary state, the acting component engages with the second driving force output part, forcing the driving force output part to transition from a retracted state to an extended state. When the driving force output part is in the extended state, the first driving force output part and the driving force receiving part are combined with each other, and at least a portion of the acting component is in the second state.

2. The process cartridge according to claim 1, wherein The acting component includes an acting member body, an acting member protruding from the acting member body, and at least one retaining member, wherein the acting member is used to engage with the second driving force output portion, and the retaining member is used to force the acting member to transform toward the first state.

3. The process cartridge according to claim 1, wherein During the conversion process between the first state and the second state, the acting member performs linear motion or curved motion.

4. The process cartridge according to claim 3, wherein: The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane, and the second plane is also parallel to the left-right direction, and the first plane and the second plane are both perpendicular to the third plane; When the straight line where the moving direction of the action member is located is parallel to the first plane and perpendicular to the left and right directions, Alternatively, when the straight line where the movement direction of the action member is located is in the first plane and is perpendicular to the left and right directions, Alternatively, the straight line on which the movement direction of the actuating member lies is located in the third plane, and the straight line on which the movement direction of the actuating member lies also intersects the first plane; The acting member in the second state is closer to the second rotation axis than the acting member in the first state.

5. The process cartridge according to claim 3, wherein: The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane, and the second plane is also parallel to the left-right direction; When the straight line of the action member and the direction of motion is parallel to the second plane and perpendicular to the left and right directions, Alternatively, the straight line on which the movement direction of the actuating member lies is located in the second plane and is perpendicular to the left-right direction; The acting member in the second state is further away from the first plane than the acting member in the first state.

6. The process cartridge according to claim 3, wherein: Along the left-right direction, one end of the process cartridge provided with the driving force receiving member is the driving end, and the other end is the non-driving end; The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane, and the second plane is also parallel to the left-right direction; When the straight line where the moving direction of the action member is located is parallel to the first plane and parallel to the left and right directions, Alternatively, the straight line on which the movement direction of the actuating member lies is located in the second plane and is parallel to the left-right direction; Along the moving direction of the acting member, the acting member in the second state is farther away from the driving end or farther away from the non-driving end than the acting member in the first state.

7. The process cartridge according to claim 3, wherein: The first plane passes through the first rotation axis and the second rotation axis, the second plane is perpendicular to the first plane and parallel to the left-right direction, and the first plane and the second plane are both perpendicular to the third plane. During the transition of the actuating member between the first state and the second state, the straight line where the movement direction of the actuating member lies is inclined relative to the first plane, the second plane and the third plane.

8. The process cartridge according to claim 1, wherein When the driving force output member is in the retracted state and the acting assembly is in the first state, as the driving force output member rotates, the driving force output member changes from the retracted state to the extended state, and the acting assembly changes from the first state to the second state.

9. The process cartridge according to claim 1, wherein When the driving force output member is in the retracted state and the acting component is in the second state, as the driving force output member rotates, the acting component first changes from the second state to the first state, and as the driving force output member changes from the retracted state to the extended state, the acting component changes from the first state to the second state.

10. The process cartridge according to any one of claims 1 to 9, wherein: When the first driving force output portion and the driving force receiving member are disengaged, and the driving force output member starts to rotate from a stationary state, the actuating member changes from the first state to the second state under the triggering action of the first triggering member provided in the imaging device or the first triggering member provided in the process cartridge; When the first triggering member is provided in the process cartridge, the first triggering member is arranged to be linked with a rotating member in the process cartridge, wherein the rotating member at least includes a developing roller and a photosensitive drum.

Images