A separating member and a processing cartridge

Abstract

The present application discloses a processing cartridge and a separating member applicable to the processing cartridge. The separating member is detachably and elastically fastened between the approaching portions where the upper drum frame and the developing frame of the processing cartridge rotate relative to each other and partially approach, so as to generate torque between the photosensitive drum on the drum frame and the developing roller on the developing frame, and can be withdrawn from the drum frame and / or the developing frame to eliminate the torque, enabling the photosensitive drum and the developing roller to contact each other. The separating member includes: a main panel; a photosensitive positioning portion, which is disposed on the main panel at an angle and is used to resist the rotatable drum frame; a developing positioning portion, which is spaced and offset from the photosensitive positioning portion and is elastically connected to the main panel at an angle and is used to resist the rotatable developing frame. In the present invention, the separating member applicable to the processing cartridge realizes the separation and contact control between the developing roller and the photosensitive drum on the processing cartridge through a non-contact manner, has a detachable design, is simple to operate, convenient to use, has a stable structure, and will not damage the photosensitive drum and the developing roller.

Description

Technical Field

[0001] The present invention relates to the technical field of processing cartridges, and particularly to a processing cartridge and a separating member applicable to the processing cartridge. Background Art

[0002] An electrophotographic imaging device forms an image on a recording material by using electrophotographic imaging processing, including an electrophotographic copying machine, an electrophotographic printer (such as a laser printer, an LED printer), an electrofax machine, a word processor, etc. And as a main component detachably installed on the electrophotographic imaging device, the processing cartridge includes a photosensitive unit and a developing unit. When the developing unit does not perform a developing operation, the developing roller in the developing unit needs to be separated from the photosensitive drum of the photosensitive unit to prevent the developer on the developing roller from adhering to the photosensitive drum. The existing separating structure between the developing roller and the photosensitive drum adopts a way of directly or indirectly contacting the photosensitive drum or the developing roller, with a complex structure and being prone to damage the photosensitive drum and the developing roller at the same time. Summary of the Invention

[0003] (I) Objects of the Invention

[0004] In order to overcome the existing technical defects, the object of the present invention is to provide a processing cartridge and a separating member applicable to the processing cartridge, which realize the separation and contact control between the developing roller and the photosensitive drum in a non-contact manner, with a detachable design, simple operation, convenient use, and a stable structure, and will not damage the photosensitive drum and the developing roller.

[0005] (II) Technical Solutions

[0006] In order to achieve the above object, the present invention adopts the following technical solutions to provide:

[0007] A separating member is detachably and elastically fastened between the approaching parts where the drum frame and the developing frame on the processing cartridge rotate relative to each other and partially approach, so as to generate a torque between the photosensitive drum on the drum frame and the developing roller on the developing frame, and can be withdrawn from the drum frame and / or the developing frame to eliminate the torque, so that the photosensitive drum and the developing roller are in contact with each other, and is used for separating the photosensitive drum on the drum frame from the developing roller on the developing frame. The separating member includes:

[0008] A main panel; a photosensitive positioning portion, which is arranged on the main panel at an angle and is used for resisting the rotatable drum frame; a developing positioning portion, which is arranged at an interval and in a staggered manner with the photosensitive positioning portion and is elastically connected to the main panel at an angle and is used for resisting the rotatable developing frame.

[0009] In some embodiments, it includes: a stress plate, which elastically extends outward along the side surface of the main panel, and the developing positioning portion is connected at an angle at the outer edge.

[0010] In some embodiments, on a side of the developing positioning portion, there is a clamping portion facing the photosensitive positioning portion for clamping the developing frame, and the clamping portion is provided with an inclined surface.

[0011] On a side of the photosensitive positioning portion, there is an abutting portion facing the clamping portion and for abutting against the drum frame.

[0012] In some embodiments, it includes: a chip fastening portion vertically arranged on the main panel, two symmetrically arranged chip fastening portions are spaced apart and are provided with facing clamping platforms; a chip limiting portion vertically arranged on the main panel and on one side of the chip fastening portion, which can be docked with the chip fastening portion to form a chip fixing position.

[0013] In some embodiments, it includes: a pull ring angledly connected to one end of the main panel for pulling the main panel.

[0014] In some embodiments, it includes: a fixing portion elastically connected at an angle to the other end of the main panel and located between the photosensitive positioning portion and the developing positioning portion.

[0015] In some embodiments, an L-shaped clearance groove is provided at a vertex of the main panel, one side edge of the L-shaped clearance groove faces the photosensitive positioning portion, and the other side edge of the L-shaped clearance groove faces the developing positioning portion.

[0016] A processing cartridge detachably installed on an electrophotographic apparatus, includes:

[0017] A first end cap and a second end cap arranged oppositely, a drum frame and a developing frame rotatable relative to each other and connected between the first end cap and the second end cap; the drum frame is provided with a rotatable photosensitive drum; the developing frame is provided with a rotatable developing roller opposite to the photosensitive drum; a separating member detachably and elastically fastened between the approaching portions where the drum frame and the developing frame rotate relative to each other and partially approach, so as to generate a torque between the photosensitive drum and the developing roller, and can be withdrawn from the drum frame or the developing frame to eliminate the torque and make the photosensitive drum and the developing roller contact each other.

[0018] In this design solution, the drum frame on the photosensitive unit rotates along the first end cap and the second end cap simultaneously to drive the photosensitive drum on the drum frame to swing relatively, and the developing frame on the developing unit rotates along the first end cap and the second end cap simultaneously to drive the developing roller on the developing frame to swing relatively, so that the drum frame and the developing frame swing relatively until they can partially approach each other. The separating member is buckled at the approaching part of the two to limit the continuous rotation of the drum frame and the developing frame. Thus, relative to the approaching part, the photosensitive drum on the drum frame and the developing roller on the developing frame can be separated from each other non - contactingly, avoiding the deposition of the developer on the developing roller onto the photosensitive drum in the non - developing state, which affects the latent image development on the photosensitive drum; when the processing cartridge performs a developing operation, the separating member is directly pulled away from the photosensitive drum and / or the developing roller, and the separated state of the photosensitive drum and the developing roller can be released, enabling the photosensitive drum and the developing roller to contact each other, so that the developer on the developing roller can be supplied to the photosensitive drum.

[0019] In some embodiments, the drum frame is provided with a drum frame stop portion that is away from the photosensitive drum and is used to abut against one side of the separating member; the developing frame is provided with a developing stop portion that is away from the developing roller and can be docked with the drum frame stop portion to abut against the other side of the separating member, and a fastener positioning portion that is angled on the developing stop portion and is used to limit the separation of the developing stop portion from the separating member.

[0020] In some embodiments, the first end cap is provided with a chip - mounting portion for mounting a chip. The chip - mounting portion and the separating member are clamped with each other to fix the separating member, and enable the separating member to clamp the drum frame and the developing frame at the chip - mounting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a processing cartridge for installing a separating member according to an embodiment of the present invention;

[0022] Figure 2 is Figure 1 exploded structural diagram of;

[0023] Figure 3 is a schematic structural diagram of a separating member installed on a processing cartridge according to an embodiment of the present invention;

[0024] Figure 4 is a partial cross - sectional view of a separating member according to an embodiment of the present invention;

[0025] Figure 5 is a schematic structural diagram of a separating member being pulled away from a processing cartridge in a developing state according to an embodiment of the present invention;

[0026] Figure 6 is a schematic installation structure diagram of a separating member in a non - developing state according to an embodiment of the present invention;

[0027] Figure 7 is a perspective top view of a separating member according to an embodiment of the present invention;

[0028] Figure 8 is a perspective bottom view of a separating member according to an embodiment of the present invention;

[0029] Figure 9 is a bottom view of a separating member according to an embodiment of the present invention;

[0030] Figure 10 is a side view of a separating member according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1. First end cap; 11. Core loading part; 2. Second end cap; 3. Drum frame; 30. Drum frame approaching part; 31. Drum frame blocking part; 32. Drum rotation connection position; 4. Developing frame; 40. Developing frame approaching part; 41. Developing blocking part; 42. Fastener positioning part; 43. Developing rotation connection position; 5. Developing roller; 6. Photosensitive drum; 7. Separating member; 70. Clamping groove; 71. Main panel; 72. Photosensitive positioning part; 721. First positioning groove; 722. Contact part; 723. Support part; 73. Developing positioning part; 731. Second positioning groove; 732. Developing resistance part; 733. Clamping part; 734. Inclined top surface; 735. Inclined bottom surface; 74. Force-bearing plate; 75. Chip fastening part; 751. Snap table; 76. Chip limiting part; 77. Pull ring; 771. Ring support plate; 78. Fixing part; 781. Hook part; 9. L-shaped clearance groove; 8. Developing connection component. Detailed implementation manners

[0033] The following further describes the technical solutions and their beneficial effects of the present invention in combination with the drawings of the specification, making them clearer and more definite.

[0034] Separating member

[0035] Please refer to Figures 1-10A separating member 7 of the present embodiment as shown. The separating member 7 of the present embodiment is detachably and elastically fastened between the drum frame 3 and the developing frame 4 of the processing cartridge. After the two can be rotated to partially approach each other, a torque is generated between the photosensitive drum 6 on the drum frame 3 and the developing roller 5 on the developing frame 4. And the separating member 7 can be withdrawn from the drum frame 3 and / or the developing frame 4 to eliminate the torque, so that the photosensitive drum 6 and the developing roller 5 are in contact with each other. Wherein, the separating member 7 includes: a main panel 71, a photosensitive positioning portion 72, and a developing positioning portion 73. Among them, the main panel 71 is in a plate shape. When the separating member 7 is fastened between the drum frame 3 and the developing frame 4, the main panel 71 can be disposed between the drum frame 3 and the developing frame 4 to directly contact the drum frame 3 and the developing frame 4. The photosensitive positioning portion 72 is disposed on the main panel 71 at an angle and cooperates with the main panel 71 to form a first positioning groove 721 structure with an included angle, which is used to resist the rotatable drum frame 3. The developing positioning portion 73 is arranged at an interval and offset from the photosensitive positioning portion 72, and the developing positioning portion 73 is elastically connected to the main panel 71 at an angle and cooperates with the main panel 71 to form a second positioning groove 731 structure with an included angle, which is used to resist the rotatable developing frame 4.

[0036] When the separating member 7 is detachably and elastically fastened between the drum frame 3 and the developing frame 4, and a torque is generated after the two are rotated to partially approach each other, when separating the photosensitive drum 6 and the developing roller 5:

[0037] The photosensitive positioning portion 72 can abut against the drum frame stopper 31 on the drum frame 3. When the drum frame 3 and the developing frame 4 are rotated relative to each other along the first end cap 1 and the second end cap 2 to partially approach each other, that is, when the approaching portion 30 of the drum frame and the approaching portion 40 of the developing frame are relatively close to each other, the photosensitive positioning portion 72 resists on the outside of the drum frame 3 to limit the approaching portion 30 of the drum frame from rotating away from the approaching portion 40 of the developing frame, ensuring that the photosensitive drum 6 and the developing roller 5 remain separated. Similarly, the developing positioning portion 73 can abut against the developing stopper 41 on the developing frame 4. When the developing frame 4 and the drum frame 3 are rotated relative to each other along the first end cap 1 and the second end cap 2 to partially approach each other, that is, when the approaching portion 40 of the developing frame and the approaching portion 30 of the drum frame are relatively close to each other, the developing positioning portion 73 resists on the outside of the developing frame 4 to limit the approaching portion 40 of the developing frame from rotating away from the approaching portion 30 of the drum frame. Thus, under the pulling force of the main panel 71, the developing positioning portion 73 swings elastically with the connection point between the developing positioning portion 73 and the main panel 71 as the fulcrum and under the pushing force of the developing stopper 41 to tightly resist on the outside of the developing stopper 41, so that the developing positioning portion 73 and the photosensitive positioning portion 72 cooperate with each other to form a fastening groove 70 structure clamped between the drum frame stopper 31 and the developing stopper 41. This fastening groove 70 structure can relatively close the approaching portion 30 of the drum frame and the approaching portion 40 of the developing frame to each other, thereby generating a torque between the photosensitive drum 6 and the developing roller 5 to achieve the purpose of separating the photosensitive drum 6 and the developing roller 5 from each other.

[0038] When the separating member 7 can be withdrawn from the drum frame 3 and / or the developing frame 4 to eliminate the torque between the photosensitive drum 6 and the developing roller 5 and bring the photosensitive drum 6 into contact with the developing roller 5:

[0039] The separating member 7 is withdrawn from the drum frame 3 and the developing frame 4 under an external tensile force. The main panel 71 drives the photosensitive positioning portion 72 and the developing positioning portion 73 to move under the external tensile force, so that the photosensitive positioning portion 72 is separated from the drum rack blocking portion 31 of the drum frame 3, and the developing positioning portion 73 is separated from the developing blocking portion 41 of the developing frame 4. Among them, under the tensile force of the main panel 71, the developing positioning portion 73 swings elastically with the connection point between the developing positioning portion 73 and the main panel 71 as the fulcrum and under the thrust of the developing blocking portion 41, so that the developing positioning portion 73 generates an elastic displacement relative to the photosensitive positioning portion 72, causing the distance between the developing positioning portion 73 and the photosensitive positioning portion 72 to change elastically, prompting the developing blocking portion 41 to be able to separate from the developing blocking portion 41 of the developing frame 4 and the photosensitive positioning portion 72 to separate from the drum rack blocking portion 31 of the drum frame 3, completing the operation of the separating member 7 detaching from the drum frame 3 and the developing frame 4. At this time, the separating member 7 releases the rotational limitation of the drum frame 3 and the developing frame 4, and the drum frame 3 and the developing frame 4 can rotate in opposite directions along the first end cover 1 and the second end cover 2 at the same time until they are partially separated from each other, so that the approaching portion 30 of the drum frame and the approaching portion 40 of the developing frame are separated from each other in the opposite direction, thereby eliminating the torque between the photosensitive drum 6 and the developing roller 5 and bringing the photosensitive drum 6 into contact with the developing roller 5.

[0040] As Figures 7-10 shown, in this embodiment, the separating member 7 includes: a force-bearing plate 74. Among them, the force-bearing plate 74 elastically extends outward along the side surface of the main panel 71, and the thickness of the force-bearing plate 74 is smaller than the thickness of the main panel 71, so that the force-bearing plate 74 forms an elasticity with a certain support strength relative to the main panel 71, and the force-bearing plate 74 is inclined downward along the outer edge of the main panel 71. The outer edge of the force-bearing plate 74 is angularly connected with the developing positioning portion 73, and the developing positioning portion 73 is angularly arranged on the force-bearing plate 74 and cooperates with the force-bearing plate 74 to form a second positioning groove 731 structure with an included angle for resisting the drum rack blocking portion 31 of the drum frame 3, which is convenient for the separating member 7 to be fastened between the drum rack blocking portion 31 and the developing blocking portion 41, and also convenient for the separating member 7 to be removed from the drum rack blocking portion 31 and the developing blocking portion 41.

[0041] As Figures 7-10As shown, in this embodiment, the developing positioning portion 73 includes: a developing resisting portion 732 and a clamping portion 733. Among them, the developing resisting portion 732 is elastically connected to the main panel 71 at an angle and is used to resist the developing resisting portion 41 of the developing frame 4. The clamping portion 733 is disposed at an angle on the side surface of the developing resisting portion 732, and the clamping portion 733 faces the photosensitive positioning portion 72. Thus, the clamping portion 733 is used to clamp the developing resisting portion 41 of the developing frame 4 so as to be able to approach or move away from the photosensitive positioning portion 72 following the elastic deformation of the developing positioning portion 73. Specifically, the clamping portion 733 is provided with an inclined surface, and the inclined surface includes an inclined top surface 734 located on the top surface of the clamping portion 733 and facing the main panel 71, and an inclined bottom surface 735 located on the bottom surface of the clamping portion 733 and arranged in the opposite direction to the inclined top surface 734. The arrangement of the inclined surface enables the clamping portion 733 to have a buffer surface to more quickly and firmly clamp the developing resisting portion 41 of the developing frame 4, and it is also easy to disengage from the developing resisting portion 41 of the developing frame 4.

[0042] As Figures 7-10 shown, in this embodiment, the photosensitive positioning portion 72 includes: an abutting portion 722 and a supporting portion 723. Among them, the abutting portion 722 is disposed on the side surface of the photosensitive positioning portion 72 and faces the clamping portion 733. The abutting portion 722 is used to resist the drum frame 3 so that the abutting portion 722 and the clamping portion 733 cooperate to clamp the drum frame blocking portion 31 and the developing blocking portion 41. The abutting portion 722 is connected to the main panel 71 at an angle and faces the developing positioning portion 73 to cooperate with the main panel 71 to form an abutting structure that can mutually abut against and restrict the movement of the drum frame blocking portion 31 of the drum frame 3, thereby resisting the action of the approaching portion 30 of the drum frame from rotating outward and away from the approaching portion 40 of the developing frame. Furthermore, the supporting portion 723 is vertically connected to the abutting portion 722, and the supporting portion 723 is used to support the abutting portion 722 so as to provide support strength for the abutting portion 722 when the abutting portion 722 abuts against the clamping portion 733. Specifically, the photosensitive positioning portion 72 is arranged in an L-shaped structure.

[0043] As Figure 2 、 3, as shown in FIGS. 7 - 10, in this embodiment, the separating member 7 further includes: a chip fastening portion 75 and a chip limiting portion 76. Among them, the chip fastening portion 75 is vertically arranged on the main panel 71, and at least two chip fastening portions 75 are arranged on the main panel 71. The two chip fastening portions 75 are symmetrically arranged and spaced apart, so as to be able to cooperate with the chip mounting portion 11 for mounting the chip on the first end cap 1, so as to assemble the separating member 7 on the first end cap 1. At the same time, a facing catch 751 is arranged between the two chip fastening portions 75 arranged at intervals. The catch 751 can be snapped into the bottom groove of the chip mounting portion 11 on the first end cap 1, so that the chip fastening portion 75 is positioned at both ends of the chip, preventing the chip on the chip mounting portion 11 from falling off and shaking. Furthermore, the chip limiting portion 76 is vertically arranged on the main panel 71 and is located on one side of the chip fastening portion 75. The side surface of the chip limiting portion 76 can be horizontally butted against the chip fastening portion 75, so that the chip limiting portion 76 and the chip fastening portion 75 cooperate to form a chip fixing position for placing the chip.

[0044] As Figure 2 , 7 -10 shown, in this embodiment, the separating member 7 further includes: a pull ring 77. The pull ring 77 is angularly connected to one end of the main panel 71 for pulling the main panel 71. Specifically, the pull ring 77 is arranged at one end of the main panel 71 away from the photosensitive positioning portion 72 and the development positioning portion 73. This end can be arranged on the outside of the first end cap 1, facilitating the user to pull the pull ring 77 to pull out the separating member 7 from the processing cartridge. Among them, both ends of the pull ring 77 are elastically connected to the main panel 71, that is, the connection between both ends of the pull ring 77 and the main panel 71 can be set to be smaller in thickness relative to the body of the pull ring 77 and the main panel 71, facilitating the swing folding of the pull ring 77 on the separating member 7. And a ring support plate 771 is arranged between both ends of the pull ring 77. The ring support plate 771 movably connects the pull ring 77 and the main panel 71, and at the same time strengthens the elastic connection of the pull ring 77. Furthermore, the pull ring 77 is in a frame shape, facilitating manual pulling.

[0045] As Figures 7-10As shown, in this embodiment, the separating member 7 further includes a fixing portion 78. The fixing portion 78 is elastically connected at an angle to the other end of the main panel 71, and the fixing portion 78 is located between the photosensitive positioning portion 72 and the developing positioning portion 73. Among them, one end of the fixing portion 78 on the main panel 71 is the end far from the pull ring 77. The fixing portion 78 is perpendicular or inclined to the main panel 71 to form a blocking portion with an included angle, which can be inserted into the gap between the drum frame 3 and the developing frame 4 and abut against the drum frame 3 and / or the developing frame 4, preventing the separating member 7 fastened to the processing cartridge from moving outward from the processing cartridge during the transportation of the processing cartridge, and preventing phenomena such as shaking and loose fastening. Furthermore, the fixing portion 78 is provided with a hook portion 781 extending outward. The hook portion 781 can hook the drum frame 3, so as to cooperate with the fixing portion 78 to clamp the separating member 7 between the drum frame 3 and the developing frame 4.

[0046] It can be understood that in other embodiments, the hook portion 781 can hook the developing frame 4 in other embodiments, or hook the drum frame 3 and the developing frame 4 at the same time, so as to cooperate with the fixing portion 78 to clamp the separating member 7 between the drum frame 3 and the developing frame 4.

[0047] As Figures 1-3 As shown in FIGS. 7-10, in this embodiment, an L-shaped clearance groove 9 is provided at a top corner of the main panel 71. One side edge of the L-shaped clearance groove 9 faces the photosensitive positioning portion 72, and the other side edge of the L-shaped clearance groove 9 faces the developing positioning portion 73. The L-shaped clearance groove 9 is docked with the drum frame approaching portion 30 of the drum frame 3, providing a clearance position at the top corner of the drum frame approaching portion 30, so that the separating member 7 is not abruptly fastened between the drum frame 3 and the developing frame 4, the separating member 7 does not occupy extra space when installed on the processing cartridge, the overall size of the processing cartridge remains unchanged, and transportation collisions can be prevented.

[0048] Processing cartridge

[0049] Please refer to Figures 1-6The processing cartridge of the present embodiment shown is detachably mounted on an electrophotographic apparatus. The processing cartridge includes: a first end cap 1, a second end cap 2, a photosensitive unit, a developing unit, and a separating member 7. Among them, the photosensitive unit includes a drum frame 3 and a photosensitive drum 6, and the developing unit includes a developing frame 4 and a developing roller 5. Specifically: The first end cap 1 and the second end cap 2 are oppositely disposed at both ends of the processing cartridge body. The photosensitive drum 6 is disposed on the drum frame 3, and the developing roller 5 is disposed on the developing frame 4. The drum frame 3 and the developing frame 4 are oppositely disposed and connected between the first end cap 1 and the second end cap 2, and the drum frame 3 and the developing frame 4 can rotate relative to each other. A rotatable photosensitive drum 6 is disposed on one side of the bottom of the drum frame 3, and a rotatable developing roller 5 is disposed on one side of the bottom of the developing frame 4, and the developing roller 5 is disposed opposite to the photosensitive drum 6. Thus, the developing roller 5 can supply the developer stored in the developing frame 4 to the photosensitive drum 6 to develop the latent image formed on the photosensitive drum 6. The separating member 7 is detachably and elastically fastened between the approaching portions where the drum frame 3 and the developing frame 4 rotate relative to each other to a partially approaching state, so as to generate a separating torque between the photosensitive drum 6 and the developing roller 5; and the separating member 7 can be withdrawn from the drum frame 3 or the developing frame 4 to eliminate the torque and make the developing roller 5 and the photosensitive drum 6 contact each other.

[0050] When the separating member 7 is detachably and elastically fastened between the approaching portions where the drum frame 3 and the developing frame 4 rotate relative to each other to a partially approaching state, so as to generate a separating torque between the photosensitive drum 6 and the developing roller 5:

[0051] When the separating member 7 is fastened between the approaching portions where the drum frame 3 and the developing frame 4 rotate relative to each other to a partially approaching state, one side of the separating member 7 bears a first thrust force for the drum frame approaching portion 30 on the drum frame 3 approaching the developing frame 4 to rotate outward between the first end cap 1 and the second end cap 2, and the other side of the separating member 7 bears a second thrust force for the developing frame approaching portion 40 on the developing frame 4 approaching the drum frame 3 to rotate outward between the first end cap 1 and the second end cap 2. Since the drum frame 3 and the developing frame 4 are relatively movably disposed, the directions of the first thrust force and the second thrust force are opposite. The separating member 7 is clamped in a fastening manner to resist the first thrust force and the second thrust force, so that the drum frame approaching portion 30 and the developing frame approaching portion 40 remain relatively close in the fastened state of the separating member 7, prompting a separating torque to exist between the photosensitive drum 6 and the developing roller 5. Thus, under the relative rotation of the drum frame 3 and the developing frame 4, this torque is equal to the distance that the drum frame approaching portion 30 and the developing frame approaching portion 40 move relative to each other to approach.

[0052] Among them, the drum frame approaching portion 30 on the drum frame 3 is set as the portion on the drum frame 3 away from the photosensitive drum 6, and the drum frame approaching portion 30 and the photosensitive drum 6 are respectively arranged on both sides of the drum rotation connection position 32. The drum rotation connection position 32 is set as the connection position where both ends of the drum frame 3 are respectively rotationally connected to the first end cover 1 and the second end cover 2, so that the photosensitive drum 6 and the drum frame approaching portion 30 can rotate between the first end cover 1 and the second end cover 2 around the drum rotation connection position 32. Among them, both ends of the drum frame 3 can be directly connected to the first end cover 1 and the second end cover 2, or can be fixedly connected or rotationally connected to the first end cover 1 and the second end cover 2 through a photosensitive connection component (not marked in the figure).

[0053] Similarly, the developing frame approaching portion 40 on the developing frame 4 is set as the portion on the developing frame 4 away from the developing roller 5, and the developing frame approaching portion 40 and the developing roller 5 are respectively arranged on both sides of the developing rotation connection position 43. The developing rotation connection position 43 is set as the connection position where both ends of the developing frame 4 are respectively rotationally connected to the first end cover 1 and the second end cover 2, so that the developing roller 5 and the developing frame approaching portion 40 can rotate between the first end cover 1 and the second end cover 2 around the developing rotation connection position 43. Among them, both ends of the developing frame 4 can be directly connected to the first end cover 1 and the second end cover 2, or can be fixedly connected or rotationally connected to the first end cover 1 and the second end cover 2 through the developing connection component 8. Thus, the drum frame 3 and the developing frame 4 rotate respectively under the support of the first end cover 1 and the second end cover 2 to drive the drum frame approaching portion 30 and the developing frame 4 portion to approach each other, and the separating member 7 is elastically fastened between the approaching drum frame approaching portion 30 and the developing frame 4 portion to limit the rotation of the drum frame 3 and the developing frame 4, so that the photosensitive drum 6 can be separated from the developing roller 5 from each other.

[0054] When the separating member 7 can be withdrawn from the drum frame 3 or the developing frame 4 to eliminate the torque and make the developing roller 5 and the photosensitive drum 6 contact each other:[[]]END]]

[0055] Since the separating member 7 bears the first thrust force for the outward rotation of the drum frame 3 and the second thrust force for the outward rotation of the developing frame 4 in the fastened state, when the separating member 7 is pulled out from the drum frame 3 or the developing frame 4 under tension, the first thrust force and the second thrust force can be released at the moment when the separating member 7 is pulled out. After the thrust force is released, the drum frame 3 and the developing frame 4 rotate respectively under the support of the first end cap 1 and the second end cap 2, driving the approaching part 30 of the drum frame and the developing frame 4 to be able to separate from each other relative to the approaching state in the state where the thrust force is released, so as to release the rotational constraint of the drum frame 3 and the developing frame 4, separate the approaching part 30 of the drum frame and the approaching part 40 of the developing frame from each other, eliminate the torque for separating the photosensitive drum 6 and the developing roller 5, thereby achieving the purpose that the photosensitive drum 6 can be in contact with the developing roller 5. Thus, the developing roller 5 can supply the developer to the photosensitive drum 6, and the latent image on the photosensitive drum 6 is developed.

[0056] As Figure 2 , 3 , 5, and 6 show that in this embodiment, to ensure the stable structure of the fastening between the drum frame 3 and the separating member 7: a drum frame stop portion 31 is provided on the drum frame 3. The drum frame stop portion 31 is away from the photosensitive drum 6 and close to the drum frame part. The drum frame stop portion 31 is used to abut against one side of the separating member 7 so that this side of the separating member 7 can block the drum frame stop portion 31, thereby restricting the rotation of the drum frame 3. Among them, the drum frame stop portion 31 can be set as a baffle or a clamping post structure that can undergo elastic deformation, etc. The panel or the clamping plate can be made of materials with certain support strength such as plastic material or metal material.

[0057] Specifically: when the drum frame 3 and the developing frame 4 rotate to partially approach, that is, when the drum frame 3 rotates along the first end cap 1 and the second end cap 2 relative to the developing frame 4, the drum frame 3 can drive the approaching part 30 of the drum frame to rotate close to the developing frame 4. At this time, the drum frame stop portion 31 also rotates with the drum frame 3 to be arranged on one side of the developing frame 4 and is arranged opposite to the developing stop portion 41. When the drum frame stop portion 31 is blocked on the inner side of one side of the separating member 7, that is, this side of the separating member 7 abuts against the drum frame stop portion 31 on the outer side relative to the developing frame 4, the drum frame 3 can be restricted by the resistance of the separating member 7 at the position where the drum frame stop portion 31 and the separating member 7 abut. This position is also the position where the photosensitive drum 6 and the developing roller 5 are separated. Thus, the drum frame stop portion 31 can restrict the drum frame 3 by the separating member 7 at the position where the photosensitive drum 6 and the developing roller 5 are separated, preventing the developer from depositing from the developing roller 5 to the photosensitive drum 6 when the processing cartridge does not develop, and ensuring the uniformity of the developed image.

[0058] Similarly, as Figure 2 , 3As shown in FIGS. 5 and 6, in this embodiment, to ensure a stable structure for fastening the drum frame 3 and the separating member 7: a developing stop portion 41 and a fastener positioning portion 42 are provided on the developing frame 4. The developing stop portion 41 is away from the developing roller 5 and close to the approaching portion 40 of the developing frame for abutting against the other side of the separating member 7. The developing stop portion 41 can be docked with the drum frame stop portion 31 to form a clamping structure for cooperating with the separating member 7. Among them, the developing stop portion 41 can be set as a baffle or a clamping post structure capable of elastic deformation, etc. The panel or the clamping plate can be made of a material with a certain support strength such as a plastic material or a metal material.

[0059] Specifically: when the developing frame 4 and the drum frame 3 rotate to a partially approaching state, that is, when the developing frame 4 rotates along the first end cap 1 and the second end cap 2 relative to the drum frame 3, the developing frame 4 can drive the approaching portion 40 of the developing frame to rotate close to the drum frame 3. At this time, the developing stop portion 41 also rotates with the developing frame 4 to be disposed on one side of the drum frame 3 and opposite to the drum frame stop portion 31. When the developing stop portion 41 is resisted against the inner side of the other side of the separating member 7, that is, when this side of the separating member 7 abuts against the outer side of the developing stop portion 41 relative to the drum frame 3, the developing frame 4 can be restricted by the resistance of the separating member 7 at the position where the developing stop portion 41 abuts against the separating member 7. This position is also the position where the photosensitive drum 6 is separated from the developing roller 5. Thus, the developing stop portion 41 can restrict the developing frame 4 by the separating member 7 at the position where the photosensitive drum 6 is separated from the developing roller 5, preventing the developer from depositing from the developing roller 5 onto the photosensitive drum 6 when the processing cartridge is not developing, and ensuring the uniformity of the developed image.

[0060] Furthermore, the fastener positioning portion 42 is disposed at an angle on the developing stop portion 41 so that the fastener positioning portion 42 cooperates with the developing stop portion 41 to form a hook-shaped or groove-shaped structure relative to the developing stop portion 41. Thus, when the developing stop portion 41 is resisted against the inner side of the other side of the separating member 7, the fastener positioning portion 42 can fasten or clamp the separating member 7, preventing the developing stop portion 41 from detaching from the separating member 7 under the thrust of the developing frame 4 and the drum frame 3, improving the fastening force between the developing frame 4 and the separating member 7, and restricting the developing stop portion 41 from detaching from the separating member 7.

[0061] As Figure 2 、 3As shown, in this embodiment, a chip mounting portion 11 for mounting a chip is provided on the first end cap 1. The chip mounting portion 11 is tightly engaged with the separation member 7 to fix the separation member 7, and the chip mounting portion 11 enables the separation member 7 to clamp the drum frame 3 and the developing frame 4 at the chip mounting portion 11. The separation member 7 can abut against both sides of the chip mounting portion 11 and be tightly engaged with the bottom of the chip mounting portion 11, positioned at both ends of the chip, and has the function of preventing the chip from falling off and shaking during transportation. Thus, the chip mounting portion 11 can tightly engage the separation member 7 on the first end cap 1 to give the separation member 7 sufficient support strength, so that when the separation member 7 fastens the drum frame 3 and the developing frame 4, the separation member 7 is prevented from being affected by the repulsive thrust between the drum frame 3 and the developing frame 4 and disengaging from the drum frame 3 and the developing frame 4. This can not only improve the stability of the separation member 7 when fastening the drum frame 3 and the developing frame 4, but also firmly set the separation member 7 on the processing cartridge and is not easily detached from the processing cartridge.

[0062] It should be understood that the above specific embodiments of the present invention are only for illustrative or explanatory purposes of the principles of the present invention and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundary of the appended claims or equivalent forms of such scope and boundary.

Claims

1. A separating member for separating a photosensitive drum on a drum frame from a developing roller on a developing frame, characterized in that, it includes: A main panel; A photosensitive positioning part, which is arranged on the main panel at an angle and is used to resist the rotatable drum frame; A developing positioning part, which is arranged at an interval and offset from the photosensitive positioning part, and is elastically connected to the main panel at an angle and is used to resist the rotatable developing frame; A stress plate, which elastically extends outward along the side surface of the main panel, and the developing positioning part is connected at an angle at the outer edge; A pull ring, which is connected to one end of the main panel at an angle and is used to pull the main panel; A fixing part, which is elastically connected to the other end of the main panel at an angle and is located between the photosensitive positioning part and the developing positioning part; On the side surface of the developing positioning part, there is a clamping part facing the photosensitive positioning part for clamping the developing frame, and the clamping part is provided with an inclined surface; On the side surface of the photosensitive positioning part, there is an abutting part facing the clamping part and used to resist the drum frame; An L-shaped clearance groove is arranged at a vertex of the main panel, one side edge of the L-shaped clearance groove faces the photosensitive positioning part, and the other side edge of the L-shaped clearance groove faces the developing positioning part.

2. The separating member according to claim 1, characterized in that, it includes: A chip fastening part, which is vertically arranged on the main panel, and two symmetrically arranged chip fastening parts are spaced apart and are provided with opposite clamping platforms; A chip limiting part, which is vertically arranged on the main panel and is located on one side of the chip fastening part and can be docked with the chip fastening part to form a chip fixing position.

3. A processing cartridge, characterized in that, it includes the separating member according to any one of claims 1-2, wherein: A first end cap and a second end cap arranged oppositely, a drum frame and a developing frame that are connected between the first end cap and the second end cap and can rotate relative to each other; On the drum frame, a rotatable photosensitive drum is provided; On the developing frame, a rotatable developing roller opposite to the photosensitive drum is provided; The separating member is detachably and elastically fastened between the approaching parts where the drum frame and the developing frame rotate relative to each other and partially approach, so as to generate a torque between the photosensitive drum and the developing roller, and can be pulled out from the drum frame or the developing frame to eliminate the torque so that the photosensitive drum and the developing roller are in contact with each other.

4. The processing cartridge according to claim 3, characterized in that: On the drum frame, there is a drum frame blocking part that is far away from the photosensitive drum and is used to abut against one side of the separating member; On the developing frame, there is a developing blocking part that is far away from the developing roller and can be docked with the drum frame blocking part to be used to abut against the other side of the separating member, and a fastener positioning part that is arranged at an angle on the developing blocking part and is used to limit the developing blocking part from detaching from the separating member.

5. The processing cartridge according to claim 4, characterized in that: On the first end cap, there is a chip mounting part for mounting a chip, and the chip mounting part and the separating member are clamped with each other to fix the separating member, and the separating member can clamp the drum frame and the developing frame at the chip mounting part.

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