CN211318999U - Processing box - Google Patents
Processing box Download PDFInfo
- Publication number
- CN211318999U CN211318999U CN202020372024.0U CN202020372024U CN211318999U CN 211318999 U CN211318999 U CN 211318999U CN 202020372024 U CN202020372024 U CN 202020372024U CN 211318999 U CN211318999 U CN 211318999U
- Authority
- CN
- China
- Prior art keywords
- developing
- gear
- member gear
- photosensitive member
- developing member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electrophotography Configuration And Component (AREA)
Abstract
The utility model relates to a processing box, which comprises a powder bin and a waste powder bin which are connected with each other, wherein the powder bin comprises a developing piece arranged therein, the waste powder bin comprises a photosensitive piece arranged therein, and the developing piece is contacted with the photosensitive piece; the process cartridge further includes a developing member gear at one end of the developing member and a photosensitive member gear at one end of the photosensitive member, the developing member gear and the photosensitive member gear being engaged with each other, the photosensitive member gear receiving a driving force from outside; the developing member gear is not mounted in the powder hopper, or both ends of the developing member are positioned by the powder hopper and the waste powder hopper, respectively, and a radial component force generated when the developing member gear is driven by the photosensitive member gear in a radial direction of the developing member gear and directed toward the rotational center of the developing member is not applied to the powder hopper any more, thereby ensuring good contact between the developing member and the photosensitive member.
Description
Technical Field
The present invention relates to an electrophotographic image forming apparatus, and more particularly to a process cartridge detachably mountable to an electrophotographic image forming apparatus such as a laser printer and a copying machine.
Background
A process cartridge is a consumable necessary for the operation of an image forming apparatus such as a laser printer, a copying machine, etc., in which a photosensitive member for forming an electrostatic latent image and a developing member for supplying toner to the surface of a photosensitive drum to develop the electrostatic latent image are rotatably mounted. To drive the photosensitive member and the developing member to rotate, the ends of the photosensitive member and the developing member are provided with a photosensitive member gear 25 ' and a developing member gear 26 ', respectively, and are engaged with each other, and when the process cartridge is mounted to the image forming apparatus, a driving force output gear preset in the image forming apparatus is engaged with the photosensitive member gear 25 ', and thus, the driving force can be transmitted from the driving force output gear to the photosensitive member gear 25 ' and the developing member gear 26 ' in turn.
To facilitate the process cartridge assembly, the conventional developing cartridge is largely divided into a powder hopper and a waste powder hopper connected to each other, a photosensitive member is mounted in the waste powder hopper together with a photosensitive member gear 25 ', a developing member is mounted in the powder hopper together with a developing member gear 26', and a surface of the developing member is in contact with a surface of the photosensitive member.
As shown in fig. 6, the driving force f applied by the photosensitive member gear 25 'to the developing member gear 26' can be resolved into a radial force f1 and a tangential force f2 in the radial direction and the tangential direction of the developing member gear, respectively, wherein the tangential force f2 pushes the developing member gear to rotate, and the radial force f1 is directed toward the center of rotation of the developing member gear. Under the action of the radial force f1, the developing gear 26 'together with the entire powder hopper may be separated from the photosensitive member gear 25' and the waste powder hopper, thereby not only causing the developing gear 26 'to be disengaged from the photosensitive member gear 25', i.e., the developing gear 26 'to "jump" on the photosensitive member gear 25', the developing member surface and the photosensitive member surface are no longer in contact, and the reaction on the image forming medium appears as a blank of the image forming area, and therefore, how to eliminate the influence of the radial force f1 on image formation needs to be considered.
SUMMERY OF THE UTILITY MODEL
The utility model provides a processing box, through improving processing box structure, make radial force f1 no longer acts on the powder storehouse, and then ensures that development spare and sensitization piece well contact, for this reason, the utility model discloses a following technical scheme:
a processing box comprises a powder bin and a waste powder bin which are connected with each other, wherein the powder bin comprises a developing piece arranged in the powder bin, the waste powder bin comprises a photosensitive piece arranged in the waste powder bin, and the developing piece is contacted with the photosensitive piece; the process cartridge further includes a developing member gear at one end of the developing member and a photosensitive member gear at one end of the photosensitive member, the developing member gear and the photosensitive member gear being engaged with each other, the photosensitive member gear receiving a driving force from outside; the developing gear is not mounted in the powder hopper, and when the photosensitive member gear transmits the driving force to the developing gear, a component force of the force applied by the photosensitive member gear to the developing gear in the radial direction of the developing gear is not applied to the powder hopper.
Preferably, the developing member gear and the photosensitive member gear are both mounted in the waste toner hopper.
Wherein, useless powder storehouse still includes useless powder storehouse frame and is located first baffle and the second baffle of two ends in useless powder storehouse frame respectively, and the sensitization piece is installed in useless powder storehouse frame, and in the length direction of handling the box, the sensitization piece is restricted by first baffle and second baffle, and development piece gear and sensitization piece gear are all fixed a position by first baffle.
The first baffle comprises a main body, a first positioning part and a second positioning part, wherein the first positioning part and the second positioning part are connected with the main body; preferably, the first baffle main body, the first positioning portion and the second positioning portion are integrally formed; further, the first baffle, the second baffle and the waste powder bin frame are integrally formed.
The developing member includes a cylindrical base, a covering layer covering a surface of the base, a magnetic core located inside the base, a distal end portion located at a distal end of the base, and a power receiving portion provided on the distal end portion, a developing member gear is mounted on the distal end portion and opposed to the power receiving portion, and a space is formed between a portion of the developing member gear opposed to the power receiving portion and the power receiving portion.
The utility model provides a still provide a processing box, including powder storehouse and waste powder storehouse connected each other, the powder storehouse includes the frame of powder storehouse and installs the developing part in the frame of powder storehouse, the waste powder storehouse includes the frame of waste powder storehouse and installs the photosensitive part in the frame of waste powder storehouse, the developing part contacts with photosensitive part; the process cartridge further includes a developing member gear at one end of the developing member and a photosensitive member gear at one end of the photosensitive member, the developing member gear and the photosensitive member gear being engaged with each other, the photosensitive member gear receiving a driving force from outside; one end of the developing member is positioned by the powder hopper frame and the other end is positioned by a developing member gear positioned on a positioning portion which is not connected to the powder hopper frame, and preferably, the positioning portion is formed integrally with the waste powder hopper frame.
As described above, the developing member gear for driving the rotation of the developing member is no longer positioned by the powder hopper together with the developing member, and therefore, the radial force f1 is no longer applied to the powder hopper, i.e., the radial force f1 no longer acts on the powder hopper, and the contact between the developing member and the photosensitive member is effectively ensured.
Drawings
Fig. 1 is a perspective view of a process cartridge according to the present invention.
Fig. 2A and 2B are perspective views of a waste toner hopper frame in a process cartridge according to the present invention.
Fig. 3 is an exploded view of a part of the components of the process cartridge according to the present invention.
Fig. 4A and 4B are perspective views of the developing gear according to the present invention.
Fig. 5 is a sectional view taken along a longitudinal direction of the developing member according to the present invention.
Fig. 6 is a sectional view of the conventional process cartridge, in which a photosensitive member gear and a developing member gear are engaged, taken along a radial direction thereof.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a perspective view of a process cartridge according to the present invention.
The process cartridge 100 is detachably mountable to an electrophotographic image forming apparatus, and includes a powder hopper 10 and a waste powder hopper 20 hinged to each other by a coupling member 30, wherein the powder hopper 10 stores toner required for operation of the process cartridge, and the waste powder hopper 20 stores waste powder generated during operation of the process cartridge. As shown in the drawing, the powder hopper 10 includes a powder hopper frame 11 and a developing member 12 mounted in the powder hopper frame 11, and the waste powder hopper 20 includes a waste powder hopper frame 21 and a photosensitive member 22 mounted in the waste powder hopper frame 21, the developing member 12 being in contact with the photosensitive member 22.
Further, the process cartridge 100 further includes a developing member gear 26 at one end of the developing member 12 and a photosensitive member gear 25 at one end of the photosensitive member 22, the developing member gear 26 and the photosensitive member gear 25 being engaged with each other; a driving force output gear (not shown) for outputting a driving force to the process cartridge 100 is provided in the electrophotographic image forming apparatus, and when the process cartridge 100 is mounted to the electrophotographic image forming apparatus, the photosensitive member gear 25 is engaged with the driving force output gear, and thus, the developing member gear 26 is driven, and finally, both the photosensitive member 22 and the developing member 12 are driven to rotate.
As shown, the waste toner hopper 20 further includes a first barrier 23 and a second barrier 24 respectively located at both ends of the waste toner hopper frame 21, and the photosensitive member 22 is restricted by the first barrier 23 and the second barrier 24 in the lengthwise direction of the process cartridge, and preferably, the first barrier 23 and the second barrier 24 are formed integrally with the waste toner hopper frame 21 to reduce unnecessary processes during the assembly of the process cartridge 100, wherein the first barrier 23, the photosensitive member gear 25, and the developing member gear 26 are located on the same side of the process cartridge.
FIGS. 2A and 2B are perspective views of a waste toner hopper frame in a process cartridge according to the present invention; fig. 3 is an exploded view of a part of the components of the process cartridge according to the present invention.
In the embodiment of the present invention, the developing gear 26 is installed in the waste powder bin 20, and when the photosensitive member gear 25 drives the developing gear 26 to rotate, the radial force f1 in the background art is not transmitted to the powder bin 10, so that the trend of separating the powder bin 10 from the waste powder bin 20 does not exist.
Specifically, the photosensitive member gear 25 and the developing member gear 26 are both positioned by the first shutter 23, and as shown in fig. 2A and 2B, the first shutter 23 includes a main body 231, a first positioning portion 232 and a second positioning portion 233 connected to the main body 231, wherein the photosensitive member gear 25 is positioned by the first positioning portion 232, and the developing member gear 26 is positioned by the second positioning portion 233, and as can be seen from fig. 1 and 6, the radial force f1 is received by the second positioning portion 233 without being applied to the powder hopper 10.
As shown in fig. 3, the process cartridge 100 further includes a supporting member 27 for supporting the developing member gear, the supporting member 27 passing through the second positioning portion 233 and entering the developing member gear 26 to position the developing member gear 26 at the second positioning portion 233; further, to prevent the developing gear 26 from directly rubbing against the developing member 12, the process cartridge 100 further includes a spacer 40 installed between the developing member 12 and the developing member gear 26, although the spacer 40 is not essential, and for example, the structure between the developing member gear and the developing member 12 may be adjusted so that the developing member gear 26 does not rub against the developing member 12.
The developing member 12 includes a cylindrical base body 121, a covering layer 122 covering the surface of the base body 121, a magnetic core 123 inside the base body 121, a tip portion 124 at the tip of the base body 121, and a power receiving portion 125 provided on the tip portion 124, the developing member gear 26 is mounted on the tip portion 124, and is opposed to the power receiving portion 125, and when the process cartridge 100 is completely assembled, one tip of the developing member 12 is positioned by the powder hopper frame 11, and the other tip is positioned by the waste powder hopper frame 21 via the developing member gear 26. When the photosensitive member gear 25 transmits the driving force to the developing member gear 26 and the radial force f1 is generated, the radial force f1 is transmitted to the second positioning portion 233 through the developing member gear 26, as described above, the second positioning portion 233 and the first positioning portion 232 are both connected to the first shutter main body 231, and the first shutter 23 is formed integrally with the waste toner hopper frame 21, and finally, the radial force f1 acts only on the waste toner hopper 20 and does not act on the toner hopper 10.
As can be seen from the above, the first shutter 23 is preferably formed integrally, and as another modified embodiment, the second positioners 233 for positioning the developer gear 26 may be separated from the second shutter main body 231 to be a separate component, in which case the second positioners 233 do not have to be connected to the powder hopper for preventing the radial force f1 from being applied to the powder hopper 10 through the second positioners 233. In general, the second positioning portion 233 for positioning the developing gear 26 is no longer connected to the powder hopper frame 11, and preferably, the second positioning portion 233 and the first positioning portion 232 for positioning the photosensitive member gear 25 are integrally formed, and more preferably, the second positioning portion 233, the first positioning portion 232 for positioning the photosensitive member gear 25 and the first shutter main body 231 are integrally formed, or the second positioning portion 233, the first positioning portion 232 for positioning the photosensitive member gear 25, the first shutter main body 231 and the waste powder hopper frame 21 are integrally formed.
When the first positioning portions 232 and the second positioning portions 233 are coupled or integrally formed, the engagement between the developing member gear 26 and the photosensitive member gear 25 can be effectively ensured without disengagement of the developing member gear 26 and the photosensitive member gear 25 even if the radial force f1 is generated therebetween.
In order to further reduce the influence of the radial force f1 on the developing gear 26, the structure of the developing gear 26 according to the present invention is further improved, and the structure of the developing gear 26 is described below with reference to fig. 4A, 4B, and 5.
Fig. 4A and 4B are perspective views of a developing gear according to the present invention; fig. 5 is a sectional view taken along a longitudinal direction of the developing member according to the present invention.
The developer gear 26 includes a rotary 261 having teeth 262 arranged on an outer surface thereof, a cavity 263 formed in the rotary 261, and a projection 264 projecting radially inward from a surface of the cavity 263, and a power transmission surface 264b and a blocking surface 264a are provided in a direction parallel to and perpendicular to a rotational axis of the developer gear 26, respectively, the power transmission surface 264b for engaging with the developer tip portion 124 to transmit a driving force to the developer 12 through the power receiving portion 125, and the blocking surface 264a for blocking the supporter 27 to prevent the supporter 27 from entering the developer gear 26 too much, resulting in that the supporter 27 is not easily taken out while preventing the supporter 27 from contacting the developer tip portion 124, thereby increasing a frictional resistance when the developer 124 rotates.
Preferably, the power receiving portion 125 is a flat surface provided on the developing member tip end portion 124, and the power receiving portion 125 is provided in two diametrically opposite, and at the same time, the power transmitting surfaces 264b in the developing member gear 26 are also provided in two diametrically opposite; when the developer gear 26 is mounted to the developer 12, the power transmitting surface 264b is opposed to the power receiving portion 125. When the photosensitive member gear 25 does not transmit the driving force to the developing member gear 26, the power transmitting surface 264b and the power receiving portion 125 are in a non-contact state, as shown in the enlarged view of part R in fig. 5, with a gap g formed between the power transmitting surface 264b and the power receiving portion 125; during the transmission of the driving force from the photosensitive member gear 25 to the developing member gear 26, the radial force f1 is applied to the developing member gear 26, particularly at the instant when the driving force output gear in the electrophotographic image forming apparatus starts to rotate, at which time the photosensitive member gear 25 applies a large instantaneous force to the developing member gear 26, and accordingly, the radial force f1 is also large, and the engagement between the developing member gear 26 and the photosensitive member gear 25 is not so tight due to the presence of the gap g, and therefore, the risk of the breakage of the teeth of the developing member gear 26 and/or the photosensitive member gear 25 due to the excessive radial force f1 is prevented.
To sum up, in the process cartridge 100 of the present invention, the developing gear 26 for driving the rotation of the developing member 12 is no longer located by the powder bin 10 together with the developing member 12, but located by the waste powder bin 20 and engaged with the photosensitive member gear 25, the radial force f1 pointing to the center of the developing member gear 26 generated in the process of transmitting the driving force from the photosensitive member gear 25 to the developing member gear 26 is no longer applied to the powder bin 10 but borne by the waste powder bin 20, that is, the radial force f1 no longer acts on the powder bin 10, and the contact between the developing member 12 and the photosensitive member 22 is effectively ensured.
Claims (10)
1. A processing box comprises a powder bin and a waste powder bin which are connected with each other, wherein the powder bin comprises a developing piece arranged in the powder bin, the waste powder bin comprises a photosensitive piece arranged in the waste powder bin, and the developing piece is contacted with the photosensitive piece;
the process cartridge further includes a developing member gear at one end of the developing member and a photosensitive member gear at one end of the photosensitive member, the developing member gear and the photosensitive member gear being engaged with each other, the photosensitive member gear receiving a driving force from outside;
it is characterized in that the developing member gear is not installed in the powder hopper.
2. A process cartridge according to claim 1, wherein when the photosensitive member gear transmits the driving force to the developing member gear, a component of the force exerted by the photosensitive member gear on the developing member gear in the radial direction of the developing member gear is not applied to the powder hopper.
3. A process cartridge according to claim 1, wherein the developing member gear and the photosensitive member gear are both mounted in the waste toner hopper.
4. A cartridge according to claim 3, wherein the waste toner hopper further comprises a waste toner hopper frame and first and second shutter plates respectively provided at both ends of the waste toner hopper frame, the photosensitive member is mounted in the waste toner hopper frame, the photosensitive member is restrained by the first and second shutter plates in a length direction of the cartridge, and the developing member gear and the photosensitive member gear are positioned by the first shutter plate.
5. A process cartridge according to claim 4, wherein the first shutter includes a main body, a first positioning portion and a second positioning portion connected to the main body, wherein the photosensitive member gear is positioned by the first positioning portion, and the developing member gear is positioned by the second positioning portion.
6. A process cartridge according to claim 5, wherein the first shutter main body, the first positioning portion and the second positioning portion are formed integrally.
7. A process cartridge according to claim 4 or 5, wherein the first shutter, the second shutter and the waste toner hopper frame are integrally formed.
8. A process cartridge according to claim 1, wherein the developing member includes a cylindrical base, a covering layer covering a surface of the base, a magnetic core located inside the base, a distal end portion located at a distal end of the base, and a power receiving portion provided on the distal end portion, the developing member gear is mounted at the distal end portion and opposed to the power receiving portion, and a portion of the developing member gear opposed to the power receiving portion is spaced from the power receiving portion.
9. A processing box comprises a powder bin and a waste powder bin which are connected with each other, wherein the powder bin comprises a powder bin frame and a developing piece arranged in the powder bin frame;
the process cartridge further includes a developing member gear at one end of the developing member and a photosensitive member gear at one end of the photosensitive member, the developing member gear and the photosensitive member gear being engaged with each other, the photosensitive member gear receiving a driving force from outside;
the developing device is characterized in that one tail end of the developing piece is positioned by the powder bin frame, the other tail end of the developing piece is positioned by the developing piece gear, and the developing piece gear is positioned on the positioning part which is not connected with the powder bin frame.
10. A process cartridge according to claim 9, wherein the positioning portion is formed integrally with the waste toner hopper frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020372024.0U CN211318999U (en) | 2020-03-21 | 2020-03-21 | Processing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020372024.0U CN211318999U (en) | 2020-03-21 | 2020-03-21 | Processing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211318999U true CN211318999U (en) | 2020-08-21 |
Family
ID=72081478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020372024.0U Active CN211318999U (en) | 2020-03-21 | 2020-03-21 | Processing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211318999U (en) |
-
2020
- 2020-03-21 CN CN202020372024.0U patent/CN211318999U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11422502B2 (en) | Drum cartridge and developing cartridge capable of suppressing variation in position of electrical contact surface | |
| JP5428846B2 (en) | cartridge | |
| KR100381601B1 (en) | coupling apparatus and process cartridge and electrophotographic printer having the same | |
| JP5273194B2 (en) | cartridge | |
| CN114114864B (en) | Developing cartridge | |
| US11899392B2 (en) | Drum cartridge and developing cartridge capable of suppressing variation in position of electrical contact surface | |
| JPH0414348B2 (en) | ||
| JP4274541B2 (en) | Image forming apparatus | |
| JP4911228B2 (en) | Cartridge and image forming apparatus | |
| JP7146410B2 (en) | Cartridge and image forming apparatus using the same | |
| JP3793457B2 (en) | Drive mechanism for image forming apparatus | |
| JP2009180984A (en) | Developing cartridge | |
| CN211318999U (en) | Processing box | |
| TW201638681A (en) | Drum cylinder unit, method for attaching coupling member, and drum unit | |
| CN110209026B (en) | Developing box | |
| CN111240170A (en) | Processing box | |
| CN216118398U (en) | Driving force transmission assembly, rotating assembly and processing box | |
| JP3623489B2 (en) | Drum holding structure | |
| JPH05297647A (en) | Process cartridge and image forming device capable of loading the same | |
| CN215416273U (en) | Developing box | |
| JP5751363B2 (en) | cartridge | |
| JP5609060B2 (en) | Power transmission device | |
| JP5494863B2 (en) | cartridge | |
| JP2017032941A (en) | Developing cartridge | |
| JP2008039903A (en) | Developing device, process cartridge, and electrophotographic image forming apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |