Process cartridge

Abstract

The present application relates to a process cartridge detachably installed in an apparatus provided with a driving force output member, the driving force output member comprising a driving portion and a braking portion which are close to each other or partially overlap, the driving portion and the braking portion being rotatable in the same direction, the driving portion being capable of applying a driving force to an external member, and the braking portion being capable of applying a braking force to the external member; the process cartridge comprising a casing, a rotating member located in the casing, and a driving force receiving member located at the end of the rotating member; when the driving force receiving member is combined with the driving force output member, the driving portion or the braking portion transmits a driving force to the driving force receiving member; when the driving portion is used to transmit a driving force to the driving force receiving member, in the process of the process cartridge returning from a working state to a non-working state, the braking portion is shielded, or in other words, in the circumferential direction of the rotating member, the braking portion does not transmit a driving force to the driving force receiving member; using this technical solution can simplify at least one of the structure of the driving force receiving member used to receive a driving force from the apparatus and the structure of the apparatus.

Description

[0001] The present application claims priority to the prior application of the applicant filed on November 12, 2021 with the China Patent Office and entitled "Processing Box", with application number CN202122784760.4, the entire contents of which are incorporated herein. TECHNICAL FIELD

[0002] The present application relates to the field of electrophotographic imaging, and in particular to a processing box which is detachably installed in an electrophotographic imaging device. BACKGROUND

[0003] The processing box is a consumable used by an electrophotographic imaging device (hereinafter referred to as "device"), a developing roller and a photosensitive drum are rotatably installed therein, the surface of the photosensitive drum forms an electrostatic latent image required for development after being charged and laser irradiated, and the developing roller supplies toner to the photosensitive drum for developing the electrostatic latent image.

[0004] The photosensitive drum receives driving force from the imaging device through a driving force receiving member provided at the longitudinal end thereof, the existing imaging device is provided with a driving member which can transmit driving force to the driving force receiving member and a brake member which stops the continuous rotation of the driving force receiving member, when the processing box is working, the driving member transmits driving force to the driving force receiving member, when the processing box stops working, the continuous rotation of the driving force receiving member is stopped by the brake member.

[0005] The existing driving member and brake member are close to each other or partially overlap, the driving force receiving member is provided with a guide surface, during the installation of the processing box towards the device, the guide surface separates the driving member and the brake member, so that part of the driving force receiving member enters between the driving member and the brake member, the driving member applies driving force to the driving force receiving member, the brake member applies braking force to the driving force receiving member, when the processing box is taken out of the device, the brake member returns to the position close to or partially overlapping with the driving member again. SUMMARY

[0006] In order to enable the photosensitive drum to receive driving force, the driving force receiving member must be provided with a guide surface for separating the driving member and the brake member from each other, at the same time, the device also needs to be provided with a structure which can enable the brake member to return to the original position close to or partially overlapping with the driving member, whether it is the structure of the driving force receiving member or the structure of the device, it is too complex.

[0007] Therefore, the present application provides a processing box which simplifies at least one of the structure of the driving force receiving member for receiving driving force for the rotating member in the processing box and the structure of the device, and the specific scheme is as follows:

[0008] The processing cartridge is detachably installed in the device provided with the driving force output element, the driving force output element comprises the driving part and the braking part which are close to each other or partially overlap, the driving part and the braking part rotate in the same direction when the device works, the driving part can apply driving force to the external part, and the braking part can apply braking force to the external part; the processing cartridge comprises the shell, the rotating part rotatably installed in the shell, and the driving force receiving part located at the end of the rotating part; when the processing cartridge is installed in the device, the driving force receiving part is combined with the driving force output element, and the driving part or the braking part transmits driving force to the driving force receiving part; when the driving part transmits driving force to the driving force receiving part, the braking part is shielded during the process that the processing cartridge returns from the working state to the non-working state.

[0009] Alternatively, when the processing cartridge is installed in the device, the driving force receiving part is combined with the driving force output element, and receives driving force from the driving part or the braking part to drive the rotating part to rotate; when the driving part transmits driving force to the driving force receiving part, the braking part does not transmit force to the driving force receiving part in the circumferential direction of the rotating part during the process that the rotating part returns from the rotating state to the non-rotating state.

[0010] In some embodiments in which the braking part transmits driving force to the driving force receiving part, at this time, the driving part does not transmit force to the driving force receiving part in the circumferential direction of the rotating part; or the driving part can apply braking force to the driving force receiving part, specifically, the driving force receiving part is provided with the driving space which can simultaneously accommodate the driving part and the braking part.

[0011] In some embodiments in which the driving part transmits driving force to the driving force receiving part, the driving force receiving part is provided with the guide surface which separates the driving part and the braking part during the process that the driving force receiving part is combined with the driving force output element; on this basis, in some embodiments, the driving part can apply braking force to the driving force receiving part.

[0012] In some embodiments, at least one of the driving part and the braking part is arranged to be telescopic along the rotating axis thereof, and the driving part or the braking part is retracted into the device when the driving force receiving part is combined with the driving force output element; in actual use, the processing cartridge is installed in the direction parallel to the rotating axis of the rotating part, and the end surface of the driving force receiving part presses the driving part or the braking part in the installation direction.

[0013] In the processing cartridge adopting the technical solution, at least one of the structure of the driving force receiving part for receiving driving force from the device and the structure of the device can be simplified. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1A and Figure 1B is the perspective view of the processing cartridge.

[0015] Figure 2Ais a perspective view of a photosensitive drum having a first driving force receiving member in a process cartridge to which the present invention pertains.

[0016] Figure 2B is a perspective view of a first driving force receiving member in a process cartridge to which the present invention pertains.

[0017] Figure 2C is a side view of a first driving force receiving member in a process cartridge to which the present invention pertains, as viewed along its axis of rotation.

[0018] Figure 3A is a perspective view of a second driving force receiving member in a process cartridge to which the present invention pertains.

[0019] Figure 3B is a side view of a second driving force receiving member in a process cartridge to which the present invention pertains, as viewed along its axis of rotation.

[0020] Figure 4A is a perspective view of a third driving force receiving member in a process cartridge to which the present invention pertains.

[0021] Figure 4B is a side view of a third driving force receiving member in a process cartridge to which the present invention pertains, as viewed along its axis of rotation.

[0022] Figure 5 is a perspective view of a fourth driving force receiving member in a process cartridge to which the present invention pertains.

[0023] Figure 6A and Figure 6B is a perspective view of a fourth driving force receiving member in a process cartridge to which the present invention pertains, before and after being combined with a driving portion and a braking portion in an apparatus.

[0024] Figure 7 is a sectional view of a fourth driving force receiving member in a process cartridge to which the present invention pertains, taken along a plane perpendicular to the axis of rotation of the driving force receiving member, after being combined with a driving portion and a braking portion in an apparatus.

[0025] Figure 8A and Figure 8B is a perspective view of a fifth driving force receiving member in a process cartridge to which the present invention pertains, before and after being combined with a driving portion and a braking portion in an apparatus.

[0026] Figure 9 is an exploded view of a first separation contact mechanism in a process cartridge to which the present invention pertains, and a process cartridge housing.

[0027] Figure 10 is a side view of a first separation contact mechanism in a process cartridge to which the present invention pertains, as viewed from left to right along the left-right direction of the process cartridge, when the separation contact mechanism is mounted to a process cartridge housing.

[0028] Figure 11is a side view of the second separating and contacting mechanism when it is installed to the casing of the process cartridge as viewed from the left to the right along the left-right direction of the process cartridge according to the present application.

[0029] Figure 12 is an exploded view of the third separating and contacting mechanism and the casing of the process cartridge according to the present application.

[0030] Figures 13A-13G is a schematic view of the movement process of the third separating and contacting mechanism controlling the separation and contact of the developing roller and the photosensitive drum under the action of the separation control mechanism in the process cartridge according to the present application.

[0031] Figure 14 is an exploded view of the fourth separating and contacting mechanism and the casing of the process cartridge according to the present application.

[0032] Figure 15 is a side view of the fourth separating and contacting mechanism when it is installed to the casing of the process cartridge as viewed from the left to the right along the left-right direction of the process cartridge according to the present application.

[0033] Figure 16 is an exploded view of the fifth separating and contacting mechanism and the casing of the process cartridge according to the present application.

[0034] Figure 17 a and Figure 17 b is a side view of the fifth separating and contacting mechanism when it is installed to the casing of the process cartridge as viewed from the left to the right along the left-right direction of the process cartridge according to the present application. DETAILED DESCRIPTION

[0035] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] Figure 1A and Figure 1B is a perspective view of the process cartridge according to the present application. The process cartridge C includes a first unit 100 and a second unit 200 combined with each other and first and second end covers 300 and 400 located at the two longitudinal ends of the process cartridge, the first and second units 100 and 200 can be combined with each other through the first and second end covers 300 and 400 or through other means such as pins, buckles, etc., the first and second end covers 300 and 400 can be either a part of the first or second unit 100 or 200 or a component independent of the first or second unit 100 or 200 as long as they can combine the first and second units 100 and 200. A developing roller 11 is rotatably installed in a casing 1 of the first unit 100, and a photosensitive drum 21 is rotatably installed in a casing 2 of the second unit 200, when the process cartridge C is in operation, the photosensitive drum 21 contacts the developing roller 11, and the developing roller 11 supplies toner to the photosensitive drum 21.

[0037] For the convenience of the following description, it is defined herein that the side of the process cartridge C in which the photosensitive drum 21 and the developing roller 11 are installed is directed to the upper side, the side opposite to the upper side is the lower side, the direction in which the first unit 100 is directed to the second unit 200 is the front side, the side opposite to the front side is the rear side, the side receiving the driving force is the left side, the side opposite to the left side is the right side, the process cartridge C is installed to the device from the upper side to the lower side in the up-down direction, the left side can also be referred to as the driving end C1, the right side can also be referred to as the non-driving end C2, the first end cover 300 is installed at the driving end C1, the second end cover 400 is installed at the non-driving end C2, the first driving force receiving member 3 for receiving the driving force for the developing roller 11 and the second driving force receiving member 4 for receiving the driving force for the photosensitive drum 21 are both exposed from the first end cover 300.

[0038] As shown in Figure 1B The process cartridge C further comprises a separation receiving mechanism 5 located therein, when the process cartridge C does not need to work in the device, the separation receiving mechanism 5 receives a separation force from the device to force the developing roller 11 and the photosensitive drum 21 to separate from each other, the surface of the photosensitive drum 21 is contaminated or the surface deformation of the developing roller 11 is inhibited. Wherein, the separation receiving mechanism 5 is arranged close to the longitudinal end of the process cartridge, the number thereof can be one or two.

[0039] The first driving force receiving member 3 and the second driving force receiving member 4 are respectively used to receive the driving force from the device, and the driving force is respectively transmitted to the developing roller 11 and the photosensitive drum 21 through direct or indirect means, further, the process cartridge C is further provided with a charging roller for charging the surface of the photosensitive drum 21, a powder feeding roller for supplying carbon powder to the developing roller 11, a stirring member for stirring the carbon powder, etc., when the process cartridge C works, these components all need to be driven to rotate, therefore, these components can be collectively referred to as rotating members, hereinafter, the second driving force receiving member 4 is directly installed at the end of the photosensitive drum 21 as an example for description.

[0040] [Second driving force receiving member]

[0041] Embodiment one

[0042] Figure 2A is a perspective view of the photosensitive drum with the first driving force receiving member in the process cartridge to which the present application relates; Figure 2B is a perspective view of the first driving force receiving member in the process cartridge to which the present application relates; Figure 2C is a side view of the first driving force receiving member in the process cartridge to which the present application relates when viewed along its rotation axis.

[0043] The photosensitive drum 21 has a rotation axis L21, and the second driving force receiving member 4 comprises a connecting portion 41 (as Figure 2BThe connecting portion 41, the chassis 42, the base 43 and the coupling portion 44 are arranged in sequence along the rotation axis L21, the connecting portion 42 connects the second driving force receiving member 4 and the photosensitive drum 21 by embedding into the photosensitive drum 21, the chassis 42 abuts against the photosensitive drum 21 to position the second driving force receiving member 4 relative to the photosensitive drum 21, the base 43 extends from the chassis 42, and the coupling portion 44 extends from the base 43 away from the chassis 42. As a simplified structure, the chassis 42 can be omitted, and the base 43 directly extends from the connecting portion 41. As a further simplified structure, the base 43 can also be omitted, and the coupling portion 44 extends from the connecting portion 41. The structure of the coupling portion 44 will be described below, and other structures of the second driving force receiving member 4 are not limited herein.

[0044] The coupling portion 44 includes a center column 45 and driving force receiving portions 46 extending radially outward from the center column 45, the rotation axis L21 passes through the center column 45, and two driving force receiving portions 46 are arranged radially opposite at the periphery of the center column 45. As shown in Figure 2A and Figure 2B Each driving force receiving portion 46 includes a base portion 461 connected with the center column 45 and a protrusion 462 extending from the base portion 461, a guide surface 463 extends from the base portion 461 toward the protrusion 462, the protrusion 462 has a first surface 464 and a second surface 465 adjacent to the guide surface 463, and the first surface 464 and the second surface 465 are both parallel to the rotation axis L21.

[0045] The device is provided with a driving force output member that outputs driving force outward, the driving force output member includes a driving portion 91 and a braking portion 92 that rotate in the same direction, before the process cartridge C is installed to the device, the driving portion 91 and the braking portion 92 are close to each other, or the driving portion 91 and the braking portion 92 partially overlap (as shown in Figure 4B Along the rotation direction, the braking portion 92 is located downstream of the driving portion 91. As the process cartridge C is installed to the predetermined position of the device, the guide surface 463 guides the braking portion 92 to move relative to the driving portion 91, so that the driving force receiving portion 46 reaches between the driving portion 91 and the braking portion 92, the driving portion 91 abuts against the first surface 464, and the second surface 465 is spaced apart from the braking portion 92, when the driving portion 91 rotates along the rotation direction r1, the driving force is transmitted to the coupling portion 44 through the first surface 464, and then the photosensitive drum 21 is driven to rotate around the rotation axis L21.

[0046] Since the second surface 465 is spaced apart from the braking portion 92, that is, the second driving force receiving member 4 does not need to be braked any more when it is stopped, the braking portion 92 does not apply force / braking force to the driving force receiving member along the circumferential direction of the photosensitive drum 21 during the process of returning the processing cartridge C from the working state to the non-working state or the process of returning the photosensitive drum 21 from the rotating state to the non-rotating state, which is equivalent to the braking portion 92 being shielded, which is beneficial to reduce the wear of the second driving force receiving member 4 when it is working. Further, after the second driving force receiving member 4 related to the embodiment is adopted, the braking portion 92 in the device no longer needs to return to the position close to or partially overlapped with the driving portion 91, which is beneficial to simplify the structure of the device. For the driving portion 91 and the braking portion 92 that are already in the separated state, the second driving force receiving member 4 of the next processing cartridge can not need to be provided with the guide surface 463, and the structure of the processing cartridge C can also be simplified.

[0047] Embodiment Two

[0048] Figure 3A is a perspective view of the second driving force receiving member in the processing cartridge related to the present application; Figure 3B is a side view of the second driving force receiving member in the processing cartridge related to the present application when viewed along its rotation axis. For the convenience of understanding, the same structure as the first driving force receiving member 4 described above will adopt the same numbering.

[0049] The second driving force receiving member in the embodiment has the same basic structure as the second driving force receiving member in the above-mentioned embodiment, but the structure of the driving force receiving portion 46 is different. As shown in the figure, the driving force receiving portion 46 in the embodiment is formed as at least one pair of mutually spaced protrusions 46a / 46b, which extend from the center column 45 in a direction away from the rotation axis L21, and form a driving space 46c therebetween. Each protrusion has a first surface 464 and a second surface 465, as shown in Figure 3B the second surface 465 of the protrusion 46a and the first surface 464 of the protrusion 46b form the edges of the driving space 46c, when the processing cartridge C is installed, the driving portion 91 enters the driving space 46c, and the braking portion 92 is located outside the driving space 46c, and when the processing cartridge C is working, the driving portion 91 abuts against the first surface 464 of the protrusion 46b, and the braking portion 92 is away from the second surface 465 of the protrusion 46b, the second driving force receiving member 4 rotates around the rotation axis L21 in the direction indicated by r1 under the driving action of the driving portion 91.

[0050] Different from the first embodiment, the second driving force receiving member 4 in this embodiment has a braking function. Specifically, when the driving portion 91 stops applying driving force to the first surface 464 of the protrusion 46b, the photosensitive drum 21 / second driving force receiving member 4 can continue to rotate in the direction indicated by r1 under the action of inertia. At this time, the second surface 465 of the protrusion 46a will abut against the driving portion 91. Since the driving portion 91 has stopped rotating, the second driving force receiving member 4 is braked under the braking action of the driving portion 91, that is, during the process in which the process cartridge C returns from the working state to the non-working state or the process in which the photosensitive drum 21 returns from the rotating state to the non-rotating state, the braking portion 92 does not apply force / braking force to the driving force receiving member in the circumferential direction of the photosensitive drum 21, which is equivalent to the braking portion 92 being shielded, and the braking of the driving force receiving member 4 is completed by the driving portion 91.

[0051] Similarly, after the second driving force receiving member 4 in this embodiment is adopted, the braking portion 92 in the device no longer needs to return to the position in which it is close to or partially overlaps the driving portion 91, which is conducive to simplifying the structure of the device. For the driving portion 91 and the braking portion 92 that are already in the separated state, the second driving force receiving member 4 of the next process cartridge can not need to be provided with the guide surface 463, and the structure of the process cartridge C can also be simplified.

[0052] For the sake of distinction, the protrusion 46a can be referred to as the first protrusion, and the protrusion 46b can be referred to as the second protrusion. In the rotating direction r1 of the photosensitive drum 21 / second driving force receiving member 4, the first protrusion 46a is located upstream of the second protrusion 46b. It can be understood that, when the process cartridge C is working in the device, the minimum distance between the second surface of the first protrusion 46a and the driving portion 91 is smaller than the minimum distance between the second surface of the second protrusion 46b and the braking portion 92, so as to ensure that, during the braking of the second driving force receiving member 4, the first protrusion 46a abuts against the driving portion 91, while the second protrusion 46b does not abut against the braking portion 92.

[0053] Embodiment Three

[0054] Figure 4A is a perspective view of the third driving force receiving member in the process cartridge according to the present application; Figure 4B is a side view of the third driving force receiving member in the process cartridge according to the present application, as viewed along the rotating axis thereof. For the sake of understanding, the same structures as those in the first driving force receiving member 4 described above will be provided with the same reference numerals.

[0055] The second driving force receiving member in this embodiment has the same basic structure as the second driving force receiving member in the above-described embodiments, but the structure of the driving force receiving portion 46 is different. As shown in Figure 4AAs shown, in this embodiment, the driving force receiving part 46 is simplified to at least one independent protrusion 462, which also has opposite first and second surfaces 464 and 465, the first surface 464 is located upstream of the second surface 465 along the rotation direction r1, when the process cartridge C is installed to the predetermined position of the device, the first surface 464 reaches downstream of the braking part 92, at this time, the first surface 464 is opposite to the braking part 92.

[0056] When the process cartridge C starts to work, the braking part 92 rotates together with the driving part 91, at this time, the braking part 92 abuts against the first surface 464, and drives the second driving force receiving part 4 to rotate along the rotation direction r1, as in the first embodiment, the second driving force receiving part 4 in this embodiment also does not need to be braked when it stops working, which is beneficial to reduce the wear of the second driving force receiving part 4 when it works; during the process that the process cartridge C returns from the working state to the non-working state or the process that the photosensitive drum 21 returns from the rotating state to the non-rotating state, the driving part 91 does not apply force / braking force to the driving force receiving part along the circumferential direction of the photosensitive drum 21, which is equivalent to that the driving part 91 is shielded.

[0057] In contrast to the above embodiments, the process cartridge C using the second driving force receiving part 4 involved in this embodiment does not need to separate the driving part 91 and the braking part 92 in the device during the working process, both of them will always keep close to or partially overlap with each other, for the process cartridge C, the second driving force receiving part 4 no longer needs to be provided with the guide surface 463, so that the structure is simplified, for the device, the driving part 91 is no longer in action, the driving part 91 and the braking part 92 are equivalent to a component for driving the second driving force receiving part 4 to rotate, and the device no longer needs to be provided with the device for returning the braking part 92 to close to or partially overlap with the driving part 91, so that the structure is simplified.

[0058] Embodiment Four

[0059] Figure 5 is a perspective view of the fourth driving force receiving part in the process cartridge involved in the present application; Figure 6A and Figure 6B is a schematic view of the fourth driving force receiving part in the process cartridge involved in the present application before and after being combined with the driving part and the braking part in the device; Figure 7 is a sectional view of the fourth driving force receiving part in the process cartridge involved in the present application after being combined with the driving part and the braking part in the device, which is perpendicular to the plane along the rotation axis of the driving force receiving part.

[0060] In this embodiment, the second driving force receiver 4 still includes a connecting part 41, a chassis 42, a base 43, and a connecting part 44. The connecting part 41 is connected to the photosensitive drum, the chassis 42 abuts against the photosensitive drum, the second driving force receiver 4 is fixed on the photosensitive drum 21, the base 43 extends from the chassis 42, and the connecting part 44 extends from the base 43 in a direction away from the chassis 42. As in the first embodiment, at least one of the chassis 42 and the base 43 may be omitted. The connecting part 44 includes a central column 45 and a driving force receiving part 46 extending radially outward from the central column 43. The rotation axis L21 passes through the central column 45. The two driving force receiving parts 46 are arranged radially opposite to each other on the periphery of the central column 45. When a base 43 is provided, preferably, the driving force receiving part 46 is integrally formed with the base 43. Along the circumferential direction of the second driving force receiving member 4, two driving spaces 46c are formed between the two driving force receiving parts 46. Each driving space 46c can simultaneously accommodate the driving part 91 and the braking part 92 in the device. When the driving part 91 and the braking part 92 do not overlap along the rotation direction r1, the arc corresponding to each driving space 46c is not less than the sum of the arc corresponding to the driving part 91 and the arc corresponding to the braking part 92. When the driving part 91 and the braking part 92 overlap along the rotation direction r1, the arc corresponding to each driving space 46c will be not less than the difference between the sum of the arc corresponding to the driving part 91 and the arc corresponding to the braking part 92 and the arc corresponding to the overlapping part.

[0061] like Figure 6A As shown, the photosensitive drum 21, on which the second driving force receiver 4 is installed, is installed to the left along the left-right direction with the processing box C. The end face / driving force receiving part 46 of the second driving force receiver 4 has an end face 47 located at the end of the installation direction. During the process of installing the processing box C toward the driving part 91 / braking part 92, if the driving part 91 and the braking part 92 are exactly opposite to the driving space 46c, then the driving part 91 and the braking part 92 will directly enter the driving space 46c. If the driving part 91 and the braking part 92 cannot be completely opposite to the driving space 46c, as the driving part 91 / braking part 92 rotates, the driving part 91 and the braking part 92 can eventually enter the driving space 46c.

[0062] In the direction of rotation r1, the brake portion 92 transmits the driving force to the driving force receiving portion 46, and further drives the second driving force receiving member 4 to rotate. When the brake portion 92 stops transmitting the driving force to the driving force receiving portion 46, the driving portion 91 brakes the second driving force receiving member 4 that continues to rotate, that is, when the process cartridge C adopts the second driving force receiving member 4 related to the embodiment, the functions of the driving portion 91 and the brake portion 92 in the apparatus are interchanged, that is, during the operation of the process cartridge C, the brake portion 92 in the apparatus functions as a driving portion, and during the process cartridge C needs to return to the non-operation state or the photosensitive drum 21 returns from the rotating state to the non-rotating state, the driving portion 91 in the apparatus functions as a brake portion, thus, during the operation of the process cartridge C and during the process cartridge C returns from the operating state to the non-operating state or the photosensitive drum 21 returns from the rotating state to the non-rotating state, the driving portion 91 and the brake portion 92 do not need to be separated, but always remain close to or partially overlap with each other, which helps to simplify the structure of the second driving force receiving member 4 and the structure of the apparatus.

[0063] Embodiment Five

[0064] Figure 8A And Figure 8B is a schematic diagram of the fifth driving force receiving member in the process cartridge related to the embodiment before and after being combined with the driving portion and the brake portion in the apparatus.

[0065] In the embodiment, at least one of the driving portion 91 and the brake portion 92 in the apparatus is arranged to be retractable along the rotation axis thereof, and the second driving force receiving member 4 still has the driving space 46c between the two driving force receiving portions 46 thereof, when the second driving force receiving member 4 is mounted to the left with the process cartridge C, the end face 47 of the second driving force receiving member 4 will abut against one of the driving portion 91 and the brake portion 92, or the end face 47 simultaneously abuts against the driving portion 91 and the brake portion 92, thus, at least one of the driving portion 91 and the brake portion 92 is compressed and retracted into the apparatus.

[0066] As shown in Figure 8B , when the driving portion 91 or the brake portion 92 enters the driving space 46c, the driving portion 91 or the brake portion 92 will drive the second driving force receiving member 4 to rotate in the direction indicated by r1 around the rotation axis L21 with the start of the apparatus; when the driving portion 91 and the brake portion 92 are simultaneously compressed, the driving portion 91 and the brake portion 92 simultaneously start to rotate with the start of the apparatus, but the second driving force receiving member 4 is not driven until one of the driving portion 92 and the brake portion 92 enters the driving space 46c.

[0067] The second driving force receiving member 4 in the embodiment can be driven by the driving part 91 or the braking part 92. When the second driving force receiving member 4 is driven by the driving part 91, the braking part 92 is pressed by the end face 47 and retracts, which means that the braking part 92 is shielded. During the operation of the process cartridge C and the process cartridge C returning from the operating state to the non-operating state, the braking part 92 no longer functions, and the braking part 92 no longer transmits force to the driving force receiving member in the circumferential direction of the photosensitive drum 21. When the second driving force receiving member 4 is driven by the braking part 92, the driving part 91 is pressed by the end face 47 and retracts, which means that the driving part 91 is shielded. During the operation of the process cartridge C and the process cartridge C returning from the operating state to the non-operating state or the photosensitive drum 21 returning from the rotating state to the non-rotating state, the driving part 91 no longer transmits force to the driving force receiving member in the circumferential direction of the photosensitive drum 21, i.e. the driving part 91 no longer functions. Similarly, the structure of the second driving force receiving member 4 and the structure of the apparatus are simplified.

[0068] As can be seen from the above embodiment, the driving part 91 or the braking part 92 in the driving force output member can transmit driving force to the driving force receiving member 4. When the driving part 91 is used to transmit driving force to the driving force receiving member 4, during the process cartridge C returning from the operating state to the non-operating state or the photosensitive drum 21 returning from the rotating state to the non-rotating state, the braking part 92 no longer transmits force to the driving force receiving member in the circumferential direction of the photosensitive drum 21. At this time, the braking part 92 is shielded. Specifically, the shielding manner can be that the braking part 92 is away from the driving force receiving part 44 in the driving force receiving member 4, or the end face 47 of the driving force receiving member 4 can press the braking part 92 to the retracted state. Similarly, the shielding manner is also applicable to the driving part 91.

[0069] [Separation contact mechanism of developing roller and photosensitive drum]

[0070] Before describing the separation contact mechanism 5, the separation control mechanism 93 in the apparatus cooperating with the separation contact mechanism 5 will be described first. Figure 10 The separation control mechanism 93 will be described. As shown in the figure, the separation control mechanism 93 is in the shape of a "concave" as a whole and extends in the front-rear direction. The separation control mechanism 93 includes a separation force applying part 93a in the front and a restoring force applying part 93b in the rear, and an active cavity 93c is formed between the two.

[0071] When the process cartridge C reaches the predetermined position of the apparatus, at least a part of the separation contact mechanism 5 enters the active chamber 93c, but the separation contact mechanism 5 does not contact the separation control mechanism 93. When the process cartridge C does not need to work in the apparatus, the separation control mechanism 93 starts to move from front to back, the separation force applying part 93a contacts the separation contact mechanism 5 and applies a separation force to the separation contact mechanism 5, then the separation control mechanism 93 starts to move from back to front, at this time, the separation force applying part 93a is separated from the separation contact mechanism 5, until the separation control mechanism 93 is separated from the separation contact mechanism 5 again, but the developing roller 11 and the photosensitive drum 21 still keep the state of being separated from each other; when the process cartridge C needs to work in the apparatus again, the separation control mechanism 93 continues to move from back to front, the restoring force applying part 93b contacts the separation contact mechanism 5 and applies a restoring force to the separation contact mechanism 5, then the separation control mechanism 93 starts to move from front to back, at this time, the restoring force applying part 93b is separated from the separation contact mechanism 5 again, until the separation control mechanism 93 is separated from the separation contact mechanism 5 again, but the developing roller 11 and the photosensitive drum 21 return to the state of contacting each other.

[0072] That is, the separation control mechanism 93 can reciprocate along the front-back direction between the intermediate position, the separation force applying position and the restoring force applying position, wherein the separation force applying position and the restoring force applying position are respectively located on both sides of the intermediate position. Specifically, when the process cartridge C works in the apparatus, the separation control mechanism 93 is located at the intermediate position, at this time, the developing roller 11 and the photosensitive drum 21 contact each other; when the process cartridge C does not need to work in the apparatus, the separation control mechanism 93 first moves from the intermediate position to the separation force applying position, and then returns from the separation force applying position to the intermediate position, at this time, the developing roller 11 and the photosensitive drum 21 are separated from each other; when the process cartridge C needs to work in the apparatus again, the separation control mechanism 93 first moves from the intermediate position to the restoring force applying position, and then returns from the restoring force applying position to the intermediate position, at this time, the developing roller 11 and the photosensitive drum 21 return to the state of contacting each other.

[0073] Embodiment One

[0074] Figure 9 is a disassembled view of the first separation contact mechanism and the process cartridge housing according to the present application; Figure 10 is a side view of the first separation contact mechanism when being mounted to the process cartridge housing according to the present application, viewed from left to right along the left-right direction of the process cartridge.

[0075] The separation contact mechanism 5 is movably arranged at the left side and / or the right side of the process cartridge C, for example, Figure 9As shown, the separating contact mechanism 5 is a rotatable rotating rod rotatably installed in the process cartridge C, comprising an acting part 51, a main body 52 and a locking part 53, the acting part 51 is used to interact with the separating control mechanism 93, and has oppositely arranged separating force receiving part 511 and restoring force receiving part 512, wherein the separating force receiving part 511 is used to receive the separating force from the separating control mechanism 93 to separate the developing roller 11 and the photosensitive drum 21 from each other, and the restoring force receiving part 512 is used to receive the restoring force from the separating control mechanism 93 to make the developing roller 11 and the photosensitive drum 21 contact each other; when the acting part 51 receives the separating force or the restoring force, the main body 52 drives the acting part 51 and the locking part 53 to rotate, and then the locking part 53 is combined with the locked part arranged in the process cartridge C, at the same time, the rotating rod 5 forces the developing roller 11 and the photosensitive drum 21 to separate from each other.

[0076] In the embodiment, the rotating rod 5 is rotatably installed at the end of the first unit housing 1 between the first unit housing 1 and the end cover 300 / 400, as shown, the first unit housing 1 is provided with a circular arc guide track 12 at the end thereof, and the main body 52 of the rotating rod 5 is provided with a guide groove 54 matched with the guide track 12, and the guide groove 54 surrounds the guide track 12; under the action of the separating control mechanism 93, the rotating rod 5 rotates along the guide track 12, and the lower surface 541 of the guide groove 54 presses the lower surface 121 of the guide track 12, thereby driving the first unit 100 to rotate around the rotation axis L of the first power receiving member 3, at this time, the developing roller 11 and the photosensitive drum 21 are separated from each other; as shown, Figure 10 As shown, preferably, the guide groove 54 and the guide track 12 are concentrically arranged with the first driving force receiving member 3, and a straight line D is drawn through the rotation axis L along the front-rear direction of the process cartridge C, and the straight line D passes through the guide track 12 to ensure the stable rotation of the rotating rod 5, more preferably, the straight line D passes through the circular arc midpoint of the guide track 12, when the rotating rod 5 rotates, the force on the guide track 12 is more uniform in the up-down direction, which is not only beneficial to the stable rotation of the first unit 100 and the rotating rod 5, but also ensures the smoother rotation of the rotating rod 5.

[0077] On the contrary, the positions of the guide track 12 and the guide groove 54 can be interchanged, that is, the guide track 12 is arranged on the main body 52, and the guide groove 54 is arranged on the housing 1, when the rotating rod 5 rotates, the upper surface of the guide track 12 pushes the upper surface of the guide groove 54, which can also make the first unit 100 rotate to separate the developing roller 11 and the photosensitive drum 21 from each other.

[0078] The rotatable rod 5 can also be provided with a pushing part, and the first unit 100 is provided with a corresponding pushed part. When the rotatable rod 5 rotates, the pushing part pushes the pushed part, so that the first unit 100 rotates around the rotation axis L, and the developing roller 11 and the photosensitive drum 21 are separated from each other. The pushing part and the pushed part can be in contact with each other, for example, the guide groove 54 can be regarded as the pushing part, and the guide rail 12 can be regarded as the pushed part. Of course, the pushing part and the pushed part can also be magnets with magnetism, and the same polarity of the two is opposite. With the rotation of the rotatable rod 5, the repulsive force between the pushing part and the pushed part gradually increases, until the first unit 100 rotates around the rotation axis L.

[0079] According to the inventive concept of the embodiment, the guide rail 12 can also be provided on the end cover 300. The mutual separation of the developing roller 11 and the photosensitive drum 21 is realized by the interaction of the pushing part provided on the rotatable rod 5 and the pushed part provided on the first unit 100. Conversely, the mutual separation of the developing roller 11 and the photosensitive drum 21 can also be realized by rotating the second unit 200 around the rotation axis L21 of the second power receiving member 4 by rotating the rotatable rod 5. The specific mode can refer to the structure for forcing the first unit 100 to rotate, which will not be described here.

[0080] As shown in Figure 10 The locking part 53 includes a first protruding part 531 provided on the main body 52, and the locked part includes the substrate 22 provided on the first unit 100 or the second unit 200 or the end cover 300 and a second protruding part 23 protruding from the substrate 22. When the separation control mechanism 93 moves from the intermediate position to the separation force applying position, the rotatable rod 5 rotates in the direction indicated by r2, the pushing part pushes the pushed part, the developing roller 11 and the photosensitive drum 21 are separated from each other, at the same time, the first protruding part 531 passes the second protruding part 23 and reaches the front of the second protruding part 23, and then the combination of the locking part 53 and the locked part is realized. At this time, even if the separation control mechanism 93 moves from the separation force applying position to the intermediate position, the developing roller 11 and the photosensitive drum 21 still maintain the state of being separated from each other. When the separation control mechanism 93 moves from the intermediate position to the recovery force applying position, the rotatable rod 5 rotates in the opposite direction of the direction indicated by r2, the first protruding part 531 passes the second protruding part 23 again and reaches the rear of the second protruding part 23, the locking part 53 and the locked part are unlocked, and under the action of the compression spring C3 between the first unit 100 and the second unit 200, the developing roller 11 and the photosensitive drum 21 return to the state of being in contact with each other.

[0081] Preferably, one end of the substrate 22 is fixed to one of the first unit 100, the second unit 200 and the end cover 300, and the other end is in a suspended state, so that the substrate 22 has a certain elastic deformation, and the locking and unlocking are easier to realize, and the friction between the locking portion 53 and the locked portion is smaller.

[0082] Embodiment Two

[0083] Figure 11 is a side view of the second separation contact mechanism when it is installed to the housing of the process cartridge as viewed from left to right along the left-right direction of the process cartridge according to the present application.

[0084] As shown in Figure 11 the process cartridge C further includes a cover 14 installed to one end of the first unit 100, and the first driving force receiving member 3 is protected between the first unit housing 1 and the cover 14, and the cover 14 is fixedly installed to the housing 1, and the separation contact mechanism 5 is formed by extending downward from the cover 14, and the lower part of the separation contact mechanism 5 forms an acting portion 51, and a separation force receiving portion 511 and a restoring force receiving portion 512 oppositely arranged in the front-rear direction are arranged on the acting portion, so that when the separation force or the restoring force is applied to the separation contact mechanism, the separation contact mechanism 5 can drive the cover 14 to move, and then the cover 14 drives the first unit housing 1 to move, and finally the separation and contact of the developing roller 11 and the photosensitive drum 21 are realized.

[0085] The separation contact mechanism 5 and the cover 14 can be integrally formed, or can be separately formed, and further, the cover 14 can be considered as a part of the separation contact mechanism 5, for example, the cover 14 is deformed from the main body 52 of the separation contact mechanism 5. When the separation contact mechanism 5 and the cover 14 are separately formed, they can be fixedly connected or movably connected, as long as the separation contact mechanism 5 can transmit the received separation force or restoring force to the cover 14, and make the developing roller 11 and the photosensitive drum 21 separate or contact each other.

[0086] As in Embodiment One, the upper part of the cover 14 is provided with the locking portion 53, and the first unit 100 or the second unit 200 or the end cover 300 is provided with the locked portion, the locking portion 53 includes the first protrusion 531, and the locked portion includes the substrate 22 and the second protrusion 23 protruding from the substrate 22, and when the separation force receiving portion 511 receives the separation force, the locking portion 53 and the locked portion are combined with each other to make the developing roller 11 and the photosensitive drum 21 keep in the state of being separated from each other, and when the restoring force receiving portion 512 receives the restoring force, the locking between the locking portion 53 and the locked portion is released to make the developing roller 11 and the photosensitive drum 21 return to the state of contacting each other.

[0087] Embodiment Three

[0088] Figure 12 is a third disengaging contact mechanism in a process cartridge according to the present application; Figures 13A-13G is a third disengaging contact mechanism in a process cartridge according to the present application, which controls the movement process of the disengaging and engaging of the developing roller and the photosensitive drum under the action of the disengaging control mechanism.

[0089] The disengaging contact mechanism 5 is movably installed, including a main body 52 and an acting part 51 arranged on the main body, when the acting part 51 receives the disengaging force from the disengaging control mechanism 93, the acting part 51 itself or the part linked with the acting part makes the first unit 100 rotate around the rotation axis L in the direction shown by r2, the developing roller 11 and the photosensitive drum 21 are disengaged from each other, and a part of the acting part 51 is locked by abutting against the disengaging control mechanism 93, the developing roller 11 and the photosensitive drum 21 keep the state of being disengaged from each other; when the acting part 51 receives the restoring force from the disengaging control mechanism 93, the locking state of the acting part 51 will be released, the first unit 100 rotates around the rotation axis L in the opposite direction of the direction shown by r2, the developing roller 11 and the photosensitive drum 21 are engaged with each other. Specifically, the disengaging contact mechanism 5 further includes a locking assembly 6 arranged in the acting part 51, which will be described below in combination with the attached drawings. Figures 13A-13G The movement process of the locking assembly 6 is described.

[0090] The locking assembly 6 includes a first movable part 61, a second movable part 62 and a rotating part 63, wherein the first movable part 61 and the second movable part 62 both extend in the front-back direction and can move in the front-back direction after receiving the force from the disengaging control mechanism 93, the rotating part 63 is used to connect the first movable part 61 and the second movable part 62, when one of the first movable part 61 and the second movable part 62 receives the force, the rotating part 63 transmits the force to the other movable part, as a whole, the locking assembly 6 is formed as a linkage mechanism, and when the developing roller 11 and the photosensitive drum 21 are engaged with each other and the developing roller 11 and the photosensitive drum 21 are disengaged from each other, the rotating part 63 keeps locking with at least one of the first movable part 61 and the second movable part 62, hereinafter, the case that the rotating part 63 keeps locking with the first movable part 61 is taken as an example for description.

[0091] As Figure 13AAs shown, the locking assembly 6 further comprises a first elastic member 64 abutting against the first movable member 61 and a second elastic member 65 abutting against the second movable member 62, when the process cartridge C is brought to a predetermined position in the apparatus, the acting portion 51 enters the movable cavity 93c, neither the first movable member 61 nor the second movable member 62 is in contact with the separation control mechanism 93 in the apparatus, at least one of the first movable member 61 and the second movable member 62 is a rack, the rotating member 63 comprises a gear capable of engaging with the rack and a stop portion 632 directly or indirectly connected with the gear, an avoiding portion 631 is provided adjacent to the stop portion 632, the stop portion 632 is capable of rotating along with the rotation of the gear.

[0092] The first movable member 61 is provided with a toothed portion 611 and a toothless portion 612 distributed adjacently, the second movable member 62 is provided with a toothed portion 621, in Figure 13A As shown in the initial stage, the developing roller 11 and the photosensitive drum 21 are in contact with each other, the front end (first force receiving end) 6a of the first movable member 61 and the rear end (second force receiving end) 6b of the second movable member 62 are located outside the acting portion 51, in the front-rear direction, the distance between the first force receiving end 6a and the second force receiving end 6b is d1, or the dimension of the locking assembly 6 in the front-rear direction is d1; the gear of the rotating member is engaged with the first movable member toothed portion 611 and the second movable member toothed portion 621 at the same time, at least the first elastic member 64 among the first elastic member 64 and the second elastic member 65 is in an elastically deformed state, the stop portion 632 is clamped with the first movable member toothed portion 611 behind the gear of the rotating member, although the first elastic member 64 has a tendency to push the first movable member 61 forward, or the second elastic member 65 has a tendency to push the second movable member 62 backward, under the interaction of the stop portion 632 and the first movable member toothed portion 611, the locking assembly 6 as a whole is in a self-locking state and remains stationary.

[0093] When the process cartridge C is not required to work in the apparatus, the separation control mechanism 93 moves from the intermediate position to the separation force applying position, as Figure 13B As shown, the separation force applying portion 93a begins to contact the front end (first force receiving end) 6a of the first movable member 61, at this time, the developing roller 11 and the photosensitive drum 21 still maintain the state of being in contact with each other, with the separation control mechanism 93 pushing the first force receiving end 6a backward, the first movable member 61 moves backward, and the first elastic member 64 is elastically deformed. When the stop portion 632 is opposite to the toothless portion 612, the rotating member 63 rotates along the direction indicated by r3, as Figure 13C the first movable member 61 and the second movable member 62 are in contact with the separation control mechanism 93 in the apparatus, the first movable member 61 and the second movable member 62 are in the state of being separated from each other, the first elastic member 64 and the second elastic member 65 are elastically deformed, the gear of the rotating member 63 is engaged with the first movable member toothed portion 611 and the second movable member toothed portion 621 at the same time, the stop portion 632 is clamped with the first movable member toothed portion 611 behind the gear of the rotating member 63, and the first force receiving end 6a of the first movable member 61 is in contact with the separation force applying portion 93a of the separation control mechanism 93. Figure 13CAs shown, the first movable member 61 tends to move forward under the elastic force of the first elastic member 64. At the same time, the gear of the rotating member and the elastic force of the second elastic member 65 drive the second movable member 62 to move backward. The second force-bearing end 6b abuts against the abutting part 15 provided in the first unit 100. Then, the first unit 100 can rotate around the rotation axis L in the direction shown by r2. The developing roller 11 and the photosensitive drum 21 are separated from each other, forming a first gap g1 between them. Obviously, the elastic force of the second elastic member 65 is greater than the elastic force of the compression spring C3.

[0094] like Figure 13D As shown, after the separation control mechanism 93 applies a separation force to the locking assembly 6, it begins to move from the position where the separation force is applied towards the middle position. The first elastic member 64 releases its elastic force, and the first movable member 61 moves forward following the separation control mechanism 93. As the stop part 632 passes through the toothed part 612, under the reaction force of the first unit 100, the second movable member 62 moves forward slightly a distance. The developing roller 11 and the photosensitive drum 21 remain separated from each other, but the distance between them decreases to g2 until they reach... Figure 13D In the state shown, the stop part 632 engages with the toothed part 611 of the first movable part in front of the gear of the rotating part, the first force-bearing end 6a abuts against the separation force application part 93a, the first movable part 61 is locked, and correspondingly, the second movable part 62 no longer moves. At this time, the dimension of the locking component 6 in the front-back direction is d2, which satisfies d2 > d1.

[0095] When processing box C needs to restart in the device, such as Figure 13E As shown, the separation control mechanism 93 begins to move from the middle position towards the position where the restoring force is applied. At this time, the developing roller 11 and the photosensitive drum 21 remain separated from each other, and the stop part 632 is opposite to the mating groove 613 provided on the first moving part. Figure 13F As shown, the restoring force application part 93b begins to abut against the second movable member 62. Under the action of the restoring force application part 93b, the second movable member 62 drives the rotating member 63 to rotate in the direction shown by r4 in the figure. At the same time, the rotating member 63 drives the first movable member 61 to move backward, and the second elastic member 65 undergoes elastic deformation again. The first unit 100 is no longer abutted, so the developing roller 11 and the photosensitive drum 21 return to the position of mutual contact.

[0096] After the separation control mechanism 93 has moved forward a predetermined distance, it begins to move from the position where the restoring force is applied towards the intermediate position, such as... Figure 13G As shown, the second movable member 62 stops moving forward, the rotating member 63 and the first movable member 61 also stop moving synchronously, and the stop part 632 engages with the tooth part 611 of the first movable member behind the gear of the rotating member again, and the locking assembly as a whole is in a self-locking state and remains stationary.

[0097] As mentioned above, the stop portion 632 can also be engaged with the tooth portion 621 of the second movable member 62 to achieve the function of locking the second movable member 62, in which case, a tooth-missing portion needs to be provided on the second movable member 62, and when the developing roller 11 and the photosensitive drum 21 are in contact with each other, the stop portion 632 is engaged with the tooth portion 621 of the second movable member in front of the gear of the rotating member, and when the developing roller 11 and the photosensitive drum 21 are separated from each other, the stop portion 632 is engaged with the tooth portion 621 of the second movable member behind the gear of the rotating member.

[0098] Alternatively, the stop portion 632 and the avoiding portion 631 can be provided on a rotating body coaxially arranged with the gear of the rotating member, and the diameter of the rotating body is greater than that of the gear of the rotating member, or the avoiding portion 631 is not necessarily provided, the diameter of the rotating body is arranged to be smaller than that of the gear of the rotating member, and the stop portion 632 protrudes from the rotating body, as long as the stop portion 632 can be engaged with the first movable member 61 or the second movable member 62 when the developing roller 11 and the photosensitive drum 21 are in contact with each other and separated from each other, so that the locking assembly 6 is kept in the self-locking state.

[0099] Similarly, the separation and contact mechanism 5 can also be provided on the second unit 200 or the end cover 300, when the separation and contact mechanism 5 is provided on the second unit 200, the locking assembly 6 will rotate the second unit 200 around the rotation axis L21 to achieve the separation of the developing roller 11 and the photosensitive drum 21; when the separation and contact mechanism 5 is provided on the end cover 300, the locking assembly 6 can rotate both the first unit 100 around the rotation axis L and the second unit 200 around the rotation axis L21, but both can achieve the separation of the developing roller 11 and the photosensitive drum 21.

[0100] The first movable member 61 and the second movable member 62 are preferably provided with a rack, alternatively, the first movable member 61 and the second movable member 62 can also be provided with a surface such as an abrasive surface, a rubber surface, etc., and the teeth of the gear of the rotating member 63 can also be replaced by an outer surface with an abrasive surface, a rubber surface, etc., as long as the force can be transmitted between the first movable member 61 and the second movable member 62, and when the developing roller 11 and the photosensitive drum 21 are in contact with each other or separated from each other, the stop portion 632 abuts against the first movable member 61 or the second movable member 62 to keep the locking assembly 6 as a whole in the self-locking state.

[0101] Further, to prevent the separation and contact mechanism 5 from interfering with the inner wall of the device during the movement of the process cartridge C to the predetermined position of the device, the separation and contact mechanism 5 in the present embodiment is in a "retracted" state before the process cartridge C reaches the predetermined position, so that no matter whether the process cartridge C directly reaches the predetermined position downwardly or is first pre-installed downwardly and then reaches the predetermined position forwardly, the separation and contact structure 5 will not touch the inner wall of the device.

[0102] As shown in Figure 12 , the upper end of the main body 52 forms a pressed part 57, and the main body 52 is further provided with a movable slot 55 and a pushing piece (not shown) installed in the movable slot 55, the longitudinal end of the first unit shell 1 is provided with a support body 13, one end of the pushing piece abuts against the support body 13, and the other end abuts against the end of the movable slot 55, under the pushing action of the pushing piece, the separation contact mechanism 5 is pushed upward as a whole to not more than the lowermost part of the first unit 100, the second unit 200 and the end cover 300, when the process cartridge C reaches the predetermined position, the pressed part 57 is pressed by the preset pressing mechanism in the equipment, and the separation contact mechanism 57 overcomes the pushing force of the pushing piece to make the action part 51 "extend", that is, the action part 51 exceeds the lowermost part of the first unit 100, the second unit 200 and the end cover 300. It can be understood that the separation contact mechanism 5 arranged in the structure that can be extended in the up-down direction can also be applied to the separation contact mechanisms of the above-mentioned embodiment one and embodiment two.

[0103] Embodiment four

[0104] Figure 14 is a fourth kind of separation contact mechanism and a process cartridge shell involved in the present application, and is a disassembled view thereof; Figure 15 is a side view of the fourth kind of separation contact mechanism when it is installed to the process cartridge shell, viewed from left to right along the left-right direction of the process cartridge involved in the present application.

[0105] The separation contact mechanism 5 involved in the present embodiment has basically the same structure as that of the embodiment three, and the difference lies in that, in the present embodiment, the separation contact mechanism 5 is connected with the cover 14, and when the developing roller 11 and the photosensitive drum 21 need to be separated from each other, the position abutted against by the second movable piece 62 of the locking assembly 6 is different.

[0106] As shown in Figure 14 and Figure 15 , the first movable piece 61 and the second movable piece 62 both extend from the action part 51, and are respectively used to be combined with the separation force applying part 93a and the restoring force applying part 93b of the separation control mechanism 93. In the process of realizing the present embodiment, the second movable piece 62 further needs to be provided with a transmission protrusion 622 (as shown in Figures 13A-13G ), and the movement process of the locking assembly 6 in the present embodiment is the same as that of the embodiment three, so the movement process of the locking assembly 6 will not be described here, and it needs to be explained that, different from the above-mentioned embodiments, the separation force applied by the separation force applying part 93a is transmitted to the action part 51 by the transmission protrusion 622, and then the separation force is transmitted to the cover 14 by the action part 51, and finally the cover 14 drives the first unit 100 to rotate along the direction shown by r2 about the rotation axis L, so as to realize the separation of the developing roller 11 and the photosensitive drum 21 from each other.

[0107] Embodiment five

[0108] Figure 16 This is an exploded view of the fifth separation contact mechanism and the processing box housing in the processing box involved in this invention; Figure 17 a and Figure 17 b is a side view of the fifth separation contact mechanism installed on the processing box housing when viewed from left to right along the left-right direction of the processing box involved in the present invention.

[0109] In this embodiment, the separation force applied by the separation force application part 93a is still first transmitted to the cover 14 by the action part 51, and then the cover 14 drives the first unit 100 to rotate around the rotation axis L in the direction shown by r2, so as to realize the separation of the developing roller 11 and the photosensitive drum 21.

[0110] As described above, in order to prevent the separation contact mechanism 5 from interfering with the inner wall of the equipment during the installation of the processing box C toward the predetermined position of the equipment, the separation contact mechanism 5 is configured to move in the vertical direction of the processing box C. Before the processing box C is installed to the predetermined position of the equipment, the separation contact mechanism 5 is in a retracted state. When the processing box C reaches the predetermined position of the equipment and is squeezed by the inner wall of the equipment, the separation contact mechanism 5 extends, and at least the actuating part 51 enters the active cavity 93c.

[0111] like Figure 16 As shown, the main body 52 is also provided with such Figure 12 The movable groove 55 and the pressed part 57 are shown. One end of the pusher (not shown) abuts against the movable groove 55, and the other end abuts against the support body 13. The pressed part 57 is slightly longer, such as... Figure 17 a and Figure 17 As shown in b, when the pressed part 57 is subjected to downward pressure from the inner wall of the device, the pressed part 57 can abut against the rib 17 on the cover 14. When the separating force application part 93c applies a separating force to the locking assembly 6, the first movable member 61 is locked. Through the transmission protrusion 622, the separating force is transmitted to the main body 52, causing the main body 52 to rotate counterclockwise around the support body 13. At the same time, the pressed part 57 pushes the rib 17, causing the first unit 100 to rotate around the rotation axis L in the direction shown in r2, and the developing roller 11 and the photosensitive drum 21 separate from each other. Conversely, when the restoring force application part 93b applies a restoring force to the locking assembly 6, the locking of the first movable member 61 is released. Under the action of the compression spring C3, the first unit 100 rotates around the rotation axis L in the direction opposite to that shown in r2, and the developing roller 11 and the photosensitive drum 21 return to the state of mutual contact.

[0112] As described above, the separation control mechanism 93 in the apparatus returns to the intermediate position not in contact with the separation contact mechanism 5 after applying the separation force and the return force to the separation contact mechanism 5, and when the separation control mechanism 93 applies the force (including the separation force and the return force) to the separation contact mechanism 5, the stroke of the corresponding components (the separation force applying portion 93a and the return force applying portion 93b) of the separation control mechanism 93 can be shortened, which is advantageous for reducing the size of the apparatus; further, the separation contact mechanism 5 involved in the present application has a locking function, after separating the developing roller 11 and the photosensitive drum 21 from each other, the separation contact mechanism 5 is locked, and even if the apparatus is shaken by external force, the developing roller 11 and the photosensitive drum 21 can be stably maintained in the state of being separated from each other.

Claims

1. A processing cartridge removably installed in an apparatus provided with a driving force output member including a driving portion and a braking portion which are close to or partially overlap with each other, and which rotate in the same direction when the apparatus is in operation, the driving portion being capable of applying a driving force to an external member, and the braking portion being capable of applying a braking force to the external member; the processing cartridge including a housing, a rotating member rotatably installed in the housing, and a driving force receiving member provided at an end of the rotating member; characterized in that, when the processing cartridge is installed in the apparatus, the driving force receiving member is combined with the driving force output member, and the driving portion or the braking portion transmits a driving force to the driving force receiving member; and when the driving portion transmits a driving force to the driving force receiving member, the braking portion is shielded during a process in which the processing cartridge returns from an operating state to a non-operating state.

2. A processing cartridge removably installed in an apparatus provided with a driving force output member including a driving portion and a braking portion which are close to or partially overlap with each other, and which rotate in the same direction when the apparatus is in operation, the driving portion being capable of applying a driving force to an external member, and the braking portion being capable of applying a braking force to the external member; the processing cartridge including a housing, a rotating member rotatably installed in the housing, and a driving force receiving member provided at an end of the rotating member; characterized in that, when the processing cartridge is installed in the apparatus, the driving force receiving member is combined with the driving force output member, and receives a driving force from the driving portion or the braking portion to drive the rotating member to rotate; and when the driving portion transmits a driving force to the driving force receiving member, the braking portion does not transmit a force to the driving force receiving member in a circumferential direction of the rotating member during a process in which the rotating member returns from a rotating state to a non-rotating state.

3. A processing cartridge removably installed in an apparatus provided with a driving force output member including a driving portion and a braking portion which are close to or partially overlap with each other, and which rotate in the same direction when the apparatus is in operation, the driving portion being capable of applying a driving force to an external member, and the braking portion being capable of applying a braking force to the external member; the processing cartridge including a housing, a rotating member rotatably installed in the housing, and a driving force receiving member provided at an end of the rotating member; characterized in that, when the processing cartridge is installed in the apparatus, the driving force receiving member is combined with the driving force output member, and receives a driving force from the braking portion to drive the rotating member to rotate; and when the braking portion transmits a driving force to the driving force receiving member, the driving portion does not transmit a force to the driving force receiving member in a circumferential direction of the rotating member during a process in which the rotating member returns from a rotating state to a non-rotating state.

4. A processing cartridge removably installed in an apparatus provided with a driving force output member including a driving portion and a braking portion which are close to or partially overlap with each other, and which rotate in the same direction when the apparatus is in operation, the driving portion being capable of applying a driving force to an external member, and the braking portion being capable of applying a braking force to the external member; the processing cartridge including a housing, a rotating member rotatably installed in the housing, and a driving force receiving member provided at an end of the rotating member; characterized in that, when the processing cartridge is installed in the apparatus, the driving force receiving member is combined with the driving force output member, and receives a driving force from the braking portion to drive the rotating member to rotate; and when the braking portion transmits a driving force to the driving force receiving member, the driving portion is capable of applying a braking force to the driving force receiving member.

5. The processing cartridge according to any one of claims 1 to 4, wherein the driving force receiving member is provided with a driving space capable of simultaneously accommodating the driving portion and the braking portion.

6. The processing cartridge according to any one of claims 1 to 5, wherein the driving force receiving member is provided with a guide surface which separates the driving portion and the braking portion during a process in which the driving force receiving member is combined with the driving force output member.

7. The processing cartridge according to any one of claims 1 to 6, wherein the driving portion is capable of applying a braking force to the driving force receiving member.

8. The processing cartridge according to any one of claims 1 to 7, wherein at least one of the driving portion and the braking portion is provided so as to be capable of being extended and retracted along an axis of rotation thereof, and the driving portion or the braking portion is retracted into the apparatus when the driving force receiving member is combined with the driving force output member.

9. The processing cartridge according to any one of claims 1 to 8, wherein the processing cartridge is installed in a direction parallel to an axis of rotation of the rotating member, and an end surface of the driving force receiving member presses the driving portion or the braking portion in the direction of installation. ​ 3. The process cartridge according to claim 1 or 2, wherein, ​ 4. The process cartridge according to claim 1 or 2, wherein ​ 5. The process cartridge of claim 4 wherein, ​ 6. The process cartridge of claim 1 or 2, wherein ​ 7. The process cartridge of claim 6 wherein, ​ 8. The process cartridge of claim 1 or 2, wherein, ​ 9. The process cartridge of claim 8 wherein, ​

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