A process cartridge

Abstract

A processing cartridge is detachably installed in an image forming device, the image forming device comprising a power output head, the power output head comprising a joint part and a gear part coaxially arranged, the processing cartridge comprising a processing cartridge housing, a photosensitive drum, a magnetic roller and a power receiving part, wherein the power receiving part is arranged at one end of the photosensitive drum in the length direction of the photosensitive drum, and is engaged with the joint part to drive the photosensitive drum to rotate; the processing cartridge housing is provided with a first guide part, and the first guide part is located outside the circumferential surface of the power receiving part when viewed along the length direction of the photosensitive drum; in the process of engagement between the power receiving part and the joint part, the first guide part pushes the inner surface of the joint part to deviate towards the outer surface of the power receiving part, and guides the engagement between the power receiving part and the joint part. The processing cartridge provided by the present application has a clever structure design, so that the installation is smooth, the driving force can be stably transmitted, and the printing quality of the processing cartridge is ensured.

Description

Technical Field

[0001] This invention relates to the field of printing consumables technology, and more specifically to a processing cartridge. Background Technology

[0002] The processing cartridge is detachably installed in the electrophotographic imaging equipment. It contains developer for imaging and developing on the printing medium. When the developer is depleted, the processing cartridge must be replaced with a new one.

[0003] When the processing cartridge is installed in the imaging device, it typically needs to receive driving force from the imaging device to drive the rotatable components in the processing cartridge to rotate.

[0004] In the prior art, there is a processing box, which includes a rotatable photosensitive drum, a magnetic roller, and a stirring frame. The photosensitive drum is connected to a drive head for engaging with a meshing part of a power output head of an imaging device to receive driving force to drive the photosensitive drum to rotate. The magnetic roller is connected to a gear for engaging with a gear part on the power output head of the imaging device to receive driving force to drive the magnetic roller to rotate. The meshing part and the gear part on the power output head are coaxially arranged, and their initial state is inclined along their rotation axis and can move in their axial direction.

[0005] When the processing box is initially installed, the imaging device controls the power output head to move forward to the first position. As the power output head rotates, the gear connected to the magnetic roller acts on the gear section to drive the power output head to move closer to the photosensitive drum drive head and align the power output head to mesh with the photosensitive drum drive head and the magnetic roller gear respectively, thereby providing rotational driving force.

[0006] However, this structure requires high precision in the machining of the magnetic roller gears. During the box-packing process, the magnetic roller gears are prone to interference with the power output head gears, causing difficulties in assembly. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a novel processing box with an ingenious structural design that allows for smooth installation and stable transmission of driving force, thereby ensuring the printing quality of the processing box.

[0008] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0009] A processing box is detachably mounted in an imaging device, the imaging device including a power output head, the power output head including a coaxially arranged coupling portion and a gear portion, characterized in that: the processing box includes a processing box housing, a photosensitive drum mounted in the processing box housing and rotatable about its rotation axis; a magnetic roller mounted in the processing box housing and rotatable about its rotation axis; a power receiving portion disposed at one end of the photosensitive drum along its length direction, engaging with the coupling portion to drive the photosensitive drum to rotate; the processing box housing is provided with a first guide portion, which, viewed along the length direction of the photosensitive drum, is located outside the circumferential surface of the power receiving portion; during the installation and rotation of the power output head, the first guide portion pushes the inner surface of the coupling portion toward the outer surface of the power receiving portion, guiding the power receiving portion to engage with the coupling portion.

[0010] Furthermore, the processing box housing is provided with a limiting ring, which is arranged around the circumference of the power receiving part, and the connecting part is accommodated between the limiting ring and the power receiving part. The first guide part is disposed on the inner ring surface of the limiting ring.

[0011] Furthermore, the first guide portion is configured as a first guide inclined surface, and in the direction perpendicular to the rotation axis of the photosensitive drum, the distance X between any point on the first guide inclined surface and the rotation axis of the photosensitive drum satisfies 6mm < X < 12mm.

[0012] Furthermore, the power receiving part protrudes outward relative to the limiting ring in the length direction of the photosensitive drum, and the protrusion distance L satisfies 0mm < L < 1.5mm.

[0013] Furthermore, the first guide portion protrudes outward relative to the limiting ring in the length direction of the photosensitive drum, and the protrusion distance H satisfies 0mm < H < 3mm.

[0014] Furthermore, the first guide portion is configured as a first guide inclined surface, and the distance between the first guide inclined surface and the power receiving portion gradually decreases from the outside to the inside.

[0015] Furthermore, in the direction perpendicular to the rotation axis of the photosensitive drum, the distance X between any point on the first guide inclined surface and the rotation axis of the photosensitive drum satisfies 6mm < X < 12mm.

[0016] Furthermore, the inner ring surface of the limiting ring is also provided with a second guide portion connected to the first guide portion, and the second guide portion protrudes further outward than the first guide portion in the length direction of the photosensitive drum.

[0017] Furthermore, the inner ring surface of the limiting ring is also provided with an anti-air tilting part that is connected to the first guide part in another direction.

[0018] Furthermore, the processing box also includes a photosensitive drum gear located at the other end of the photosensitive drum along its length; the magnetic roller is connected to the magnetic roller gear, and the magnetic roller gear meshes with the photosensitive drum gear for transmission.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention provides a novel processing cartridge. During the installation of the processing cartridge into a printer, a first guide portion is provided on the cartridge housing. This first guide portion is located on the outer side of the circumferential surface of the power receiving portion, guiding the coupling portion of the power output head to engage with the power receiving portion. Specifically, as the coupling portion approaches the first guide portion, with the rotation of the power output head, the first guide portion provides a pushing force to align the power output head and further push the coupling portion closer to the power receiving portion until the engagement and transmission between the two are achieved. By setting the position of the first guide portion, the processing cartridge can be installed smoothly and the driving force can be stably transmitted, ensuring the printing quality of the processing cartridge.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the box-packing machine in Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the processing box in Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of the power output head in Embodiment 1 of the present invention;

[0025] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 5 This is a partial structural diagram of the processing box in Embodiment 1 of the present invention;

[0027] Figure 6 This is a schematic diagram of the processing box in Embodiment 2 of the present invention;

[0028] Figure 7 for Figure 6 Enlarged view at point B in the middle;

[0029] Figure 8 This is a partial structural diagram of the processing box in Embodiment 2 of the present invention;

[0030] Explanation of icon numbers:

[0031] 100-Processing box, 11-Processing box housing, 111-Limiting ring, 112-First guide part, 113-Second guide part, 114-Avoiding tilting part, 12-Photosensitive drum, 13-Magnetic roller, 14-Power receiving part, 15-Photosensitive drum gear, 16-Magnetic roller gear, 17-Stirring frame, 18-Stirring frame gear, 19-Intermediate gear, 200-Power output head, 21-Connection part, 22-Gear part, 300-Processing box, 31-Processing box housing, 311-Limiting ring, 312-First guide part, 32-Photosensitive drum, 33-Magnetic roller, 34-Power receiving part, 35-Photosensitive drum gear, 36-Magnetic roller gear, 37-Stirring frame, 38-Stirring frame gear, 39-Intermediate gear Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1:

[0034] See Figures 1-5 , Figure 1 This is a schematic diagram of the box-packing machine in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the processing box in Embodiment 1 of the present invention. Figure 3 This is a schematic diagram of the power output head in Embodiment 1 of the present invention. Figure 4 for Figure 2 Enlarged view at point A in the middle. Figure 5 This is a partial structural diagram of the processing box in Embodiment 1 of the present invention.

[0035] See Figures 1-5 The present invention provides a novel processing box 100, which has an ingenious structural design that allows for smooth installation and stable transmission of driving force, thereby ensuring the printing quality of the processing box 100.

[0036] In this embodiment, the processing box 100 is detachably installed in an imaging device (not shown), and printing can be performed by installing the processing box 100 in the imaging device.

[0037] Specifically, the imaging device includes a power output head 200, such as Figure 3As shown, the power output head 200 includes a coaxially arranged connecting portion 21 and a gear portion 22. The connecting portion 21 protrudes outward compared to the gear portion 22. The connecting portion 21 is cylindrical, and the end face of the cylinder is recessed inward to form a non-circular connecting groove, commonly a groove with a triangular cross-section, such as... Figure 3 As shown.

[0038] In this embodiment, the processing box 100 includes a processing box housing 11, a photosensitive drum 12, a magnetic roller 13, a power receiving unit 14, a photosensitive drum gear 15, a magnetic roller gear 16, a stirring frame 17, a stirring frame gear 18, and an intermediate gear 19.

[0039] In this embodiment, the photosensitive drum 12 is installed in the processing box housing 11 and can rotate about its rotation axis.

[0040] The power receiving unit 14 is provided at one end of the photosensitive drum 12 along its length, and the photosensitive drum gear 15 is provided at the other end of the photosensitive drum 12 along its length. The power receiving unit 14 is used to engage with the coupling part 21 of the power output head 200 to receive the printer driving force to drive the photosensitive drum 12 to rotate.

[0041] Specifically, the power receiving part 14 and the connecting part 21 are connected by a concave-convex fit. Furthermore, the power receiving part 14 protrudes outward from the shaft end of the photosensitive drum 12, and its cross-section is non-circular, commonly a triangular convex part, such as... Figure 2 and Figure 4 As shown.

[0042] The magnetic roller 13 is installed in the processing box housing 11 and can rotate about its axis of rotation.

[0043] See Figure 5 On the same side as the photosensitive drum gear 15, the magnetic roller 13 is connected to a magnetic roller gear 16. The magnetic roller gear 16 meshes with the photosensitive drum gear 15 for transmission. When the power output head 200 drives the photosensitive drum 12 to rotate, the photosensitive drum 12 drives the magnetic roller 13 to rotate.

[0044] The stirring rack 17 is installed in the processing box housing 11 and can rotate about its axis of rotation.

[0045] See also Figure 5 The stirring frame 17 is connected to the stirring frame gear 18 on the same side as the photosensitive drum 12. The stirring frame gear 18 is driven by the magnetic roller gear 16 through the intermediate gear 19. When the power output head 200 drives the photosensitive drum 12 to rotate, the photosensitive drum 12 drives the magnetic roller 13 to rotate, and the magnetic roller 13 drives the stirring frame 17 to rotate.

[0046] In this embodiment, one end of the photosensitive drum 12 in the length direction receives the driving force from the power output head 200, and the other end rotates by meshing with the magnetic roller 13 and the stirring frame 17 through the photosensitive drum gear 15, so as to stably transmit the driving force and ensure the printing quality of the processing box 100.

[0047] In this embodiment, as Figure 2 and Figure 4 As shown, the processing housing 11 is provided with a first guide portion 112, which is located on the outer side of the circumferential surface of the power receiving portion 14 when viewed along the length of the photosensitive drum.

[0048] The first guide portion 112 is used to guide the power receiving portion 14 to engage with the connecting portion 21. As the power output head 200 rotates, the first guide portion 112 pushes the inner surface of the connecting portion 21 toward the outer surface of the power receiving portion 14, which generates a thrust that causes the connecting portion 21 to engage with the power receiving portion 14.

[0049] Specifically, during the installation of the processing cartridge 100 into the printer, compared to the first guide portion 112 which is disposed outward on the processing cartridge housing 11, the connecting portion 21 of the power output head 200 is guided to connect with the power receiving portion 14. Specifically, when the connecting portion 21 approaches the first guide portion 112, as the power output head 200 rotates, the first guide portion 112 provides a pushing force to align the power output head 200 and further push the connecting portion 21 to move closer to the power receiving portion 14 until the connection and transmission between the two are achieved.

[0050] In this embodiment, preferably, in the length direction of the photosensitive drum, the first guide portion 112 is disposed outward compared to the power receiving portion 14, and the first guide portion 112 further guides the connecting portion 21 to smoothly connect with the power receiving portion 14.

[0051] In this embodiment, preferably, the first guide portion 112 is configured as a first guide inclined surface; specifically, see [link to documentation]. Figure 4 The distance between the first guide inclined surface and the power receiving part 14 gradually decreases from the outside to the inside. The inclined surface of the first guide part 112 is provided to facilitate the smooth connection between the guide joint 21 and the power receiving part 14.

[0052] In this embodiment, preferably, in the direction perpendicular to the rotation axis of the photosensitive drum 12, the distance X between any point on the first guide inclined surface and the rotation axis of the photosensitive drum 12 satisfies 6mm < X < 12mm. That is, the distance between the first guide inclined surface and the rotation axis of the photosensitive drum 12 is within the range of 6mm to 12mm. This deviation distance setting ensures that the first guide part 112 guides the joint 21 to smoothly combine with the power receiving part 14, avoids interference caused by too close deviation, and avoids failure to play a guiding role due to too far deviation.

[0053] In this embodiment, preferably, the processing box housing 11 is provided with a limiting ring 111. When the photosensitive drum 12 is installed into the processing box housing 11, the power receiving part 14 passes through the limiting ring 111. Then the processing box 100 is installed into the printer. The annular space between the limiting ring 111 and the power receiving part 14 accommodates the connecting part 21. The limiting ring 111 can serve as a bearing component of the power receiving part 14, playing the role of supporting the power receiving part 14.

[0054] In this embodiment, the first guide portion 112 is disposed on the inner ring surface of the limiting ring 111, and the guide engagement portion 21 is engaged with the power receiving portion 14.

[0055] In this embodiment, preferably, the first guide portion 112 protrudes outward from the limiting ring 111 in the length direction of the photosensitive drum, and the protrusion distance H satisfies 0mm < H < 3mm. This protrusion distance setting ensures that the first guide portion 112 guides the connecting portion 21 to smoothly connect with the power receiving portion 14, avoiding the protrusion being too small and thus not playing a guiding role, and avoiding the protrusion being too large and thus interfering with the connection between the connecting portion 21 and the power receiving portion 14.

[0056] In this embodiment, further, see... Figure 4 The inner ring surface of the limiting ring 111 is also provided with a second guide portion 113 connected to the first guide portion 112. The second guide portion 113 protrudes further outward than the first guide portion 112 in the length direction of the photosensitive drum. When the processing box 100 is installed in the imaging device, the second guide portion 113 is used to avoid interference between the processing box 100 and the connecting portion 21. At the same time, the second guide portion 113 is also used to guide the connecting portion 21 to connect with the power receiving portion 14, further assisting the first guide portion 112 in guiding the connecting portion 21 to connect with the power receiving portion 14.

[0057] Specifically, the second guide portion 113 is configured as a second guide inclined surface; see [link to documentation]. Figure 4 The distance between the second guide inclined surface and the power receiving part 14 gradually decreases from the outside to the inside.

[0058] In this embodiment, further, see also... Figure 4The inner ring surface of the limiting ring 111 is also provided with a clearance tilting part 114 connected to the first guide part 112 in another direction. The direction in which the clearance tilting part 114 is connected to the first guide part 112 and the direction in which the second guide part 113 is connected to the first guide part 112 intersect. Before the connecting part 21 on the power output head 200 is fully connected to the power receiving part 14, the power output head 200 has already begun to be driven to rotate. The clearance tilting part 114 is used to prevent the rotation of the power output head 200 during this period from interfering with the processing box 100.

[0059] Example 2:

[0060] See Figures 6-8 , Figure 6 This is a schematic diagram of the processing box in Embodiment 2 of the present invention. Figure 7 for Figure 6 Enlarged view at point A in the middle. Figure 8 This is a partial structural diagram of the processing box in Embodiment 2 of the present invention.

[0061] The difference between this embodiment and the above embodiments is that, as Figure 6 and Figure 7 As shown, in this embodiment, the first guide portion 312 is disposed on the inner ring surface of the limiting ring 311. In the length direction of the photosensitive drum, the first guide portion 312 does not protrude from the limiting ring 311, and there is no need to provide an auxiliary second guide portion 113 and a clearance tilting portion 114 as in Embodiment 1. The first guide portion 312 provided above can more smoothly guide the connecting portion 21 and the power receiving portion 34 to connect.

[0062] In this embodiment, the first guide portion 312 is configured as a first guide inclined surface. The inclined surface of the first guide portion 312 facilitates the smooth connection of the guide joint 21 with the power receiving portion 34. Furthermore, in the direction perpendicular to the rotation axis of the photosensitive drum 32, the distance X between any point on the first guide inclined surface and the rotation axis of the photosensitive drum 32 satisfies 6mm < X < 12mm. That is, the distance of the first guide inclined surface from the rotation axis of the photosensitive drum 32 is within the range of 6mm to 12mm. This deviation distance setting ensures that the first guide portion 312 guides the joint 21 to connect smoothly with the power receiving portion 34, avoids interference between the joint 21 and the power receiving portion 34 due to excessive deviation, and avoids failure to play a guiding role due to excessive deviation.

[0063] In this embodiment, preferably, the power receiving part 34 protrudes outward from the limiting ring 311 in the length direction of the photosensitive drum, and the protrusion distance L satisfies 0mm < L < 1.5mm, so that the engagement between the power receiving part 34 and the joint 21 of the power output head 200 is more reliable.

[0064] Further, see Figure 8 In this embodiment, the photosensitive drum gear 35 and the power receiving unit 34 are coaxially arranged and located at the same end in the length direction of the photosensitive drum. Similarly, on the same side, the photosensitive drum gear 35 meshes with the magnetic roller gear 36, and the magnetic roller gear 36 meshes with the stirring frame gear 38 through the intermediate gear 39, resulting in higher transmission efficiency.

[0065] Everything else is the same as in Embodiment 1 above, and will not be repeated here.

[0066] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A processing box detachably mounted in an imaging device, the imaging device including a power output head, the power output head including a coaxially arranged coupling portion and a gear portion, characterized in that: The processing box includes a processing box housing, and, The photosensitive drum is installed in the processing box housing and can rotate about its axis of rotation; A magnetic roller is installed in the processing box housing and can rotate about its axis of rotation; A power receiving unit is provided at one end of the photosensitive drum along its length direction and engages with the connecting part to drive the photosensitive drum to rotate. The processing box housing is provided with a first guide portion and a limiting ring. The limiting ring is arranged around the circumferential surface of the power receiving portion, and the connecting portion is accommodated between the limiting ring and the power receiving portion. The first guide portion is arranged on the inner ring surface of the limiting ring. During the engagement of the power receiving part and the connecting part, the first guiding part pushes the connecting part, causing the inner surface of the connecting part to be biased toward the outer surface of the power receiving part, thereby guiding the power receiving part to engage with the connecting part.

2. The processing box according to claim 1, characterized in that: The first guide portion is configured as a first guide inclined surface, and in the direction perpendicular to the rotation axis of the photosensitive drum, the distance X between any point on the first guide inclined surface and the rotation axis of the photosensitive drum satisfies 6mm < X < 12mm.

3. The processing box according to claim 2, characterized in that: The power receiving part protrudes outward relative to the limiting ring along the length direction of the photosensitive drum, and the protrusion distance L satisfies 0mm < L < 1.5mm.

4. The processing box according to claim 1, characterized in that: The first guide portion protrudes outward relative to the limiting ring along the length direction of the photosensitive drum, and the protrusion distance H satisfies 0mm < H < 3mm.

5. The processing box according to claim 4, characterized in that: The first guide portion is configured as a first guide inclined surface, and the distance between the first guide inclined surface and the power receiving portion gradually decreases from the outside to the inside.

6. The processing box according to claim 5, characterized in that: In the direction perpendicular to the rotation axis of the photosensitive drum, the distance X between any point on the first guide inclined surface and the rotation axis of the photosensitive drum satisfies 6mm < X < 12mm.

7. The processing box according to claim 6, characterized in that: The inner ring surface of the limiting ring is also provided with a second guide portion connected to the first guide portion, and the second guide portion protrudes further outward than the first guide portion in the length direction of the photosensitive drum.

8. The processing box according to claim 7, characterized in that: The inner ring surface of the limiting ring is also provided with an anti-air inclined part that is connected to the first guide part in another direction.

9. The processing box according to any one of claims 1-8, characterized in that: The processing box also includes a photosensitive drum gear, which is coaxially disposed at the same end of the photosensitive drum along its length direction with the power receiving unit; the magnetic roller is connected to a magnetic roller gear, and the magnetic roller gear meshes with the photosensitive drum gear for transmission.

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