CN108267944B - Drum box - Google Patents
Drum box Download PDFInfo
- Publication number
- CN108267944B CN108267944B CN201810251072.1A CN201810251072A CN108267944B CN 108267944 B CN108267944 B CN 108267944B CN 201810251072 A CN201810251072 A CN 201810251072A CN 108267944 B CN108267944 B CN 108267944B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- shaft
- groove
- drum
- photosensitive drum
- 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.)
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000004140 cleaning Methods 0.000 claims abstract description 37
- 229910052742 iron Inorganic materials 0.000 claims abstract description 34
- 239000002699 waste material Substances 0.000 claims abstract description 10
- 238000010023 transfer printing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 238000007639 printing Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000002301 combined effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
- G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
Landscapes
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Configuration And Component (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
The present invention provides a drum cartridge comprising: a frame having a waste bin; a photosensitive drum rotatably supported around a rotation axis between both end walls of the frame; the transfer roller is parallel to the axis of the photosensitive drum and is arranged on the frame in a mutually abutting manner; the cleaning roller is arranged at the opening of the waste powder bin in parallel with the axis of the photosensitive drum and keeping a gap with each other; the transfer roller comprises a shaft core and a shaft sleeve, the shaft sleeve is sleeved on the shaft core, and a first groove is formed between the shaft sleeve and the shaft core; the cleaning roller comprises an iron shaft and a sleeve, the sleeve is sleeved on the iron shaft, and a second groove is formed between the sleeve and the iron shaft. The first groove is formed between the shaft sleeve and the shaft core, the second groove is formed between the sleeve and the iron shaft, and the pressure of the photosensitive drum can be effectively relieved by utilizing the groove structures of the cleaning roller and the transfer roller, the friction force to the photosensitive drum is reduced, and the service life of the photosensitive drum is prolonged. And moreover, the drum box is simple in structure, the printing effect of products is not affected, and the service life of the drum box is prolonged.
Description
Technical Field
The invention relates to the technical field of printing consumables, in particular to a drum box.
Background
In image forming apparatuses such as electrostatic copiers or digital copiers and all-in-one printers, a developing device for developing an electrostatic latent image formed on a photosensitive drum is provided, and the developing device applies toner onto the electrostatic latent image to develop it. In general, such a developing device is mainly composed of a photosensitive member unit including a photosensitive drum and a developing unit of a developing roller. In an image forming apparatus, such as a laser printer, a developing cartridge holding a developing roller is mounted to a drum assembly holding a photosensitive drum, the drum assembly having a developing cartridge receiving portion. The photosensitive drum is placed at one side of the developing cartridge accommodating section and faces the developing cartridge accommodating section. Meanwhile, the developing roller is disposed at one end portion of the developing cartridge so that it is exposed to the outside with one portion of the facing surface.
When the developing cartridge is mounted to the drum assembly, the developing cartridge is placed over the developing cartridge accommodating portion so that the developing roller contacts the photosensitive drum. When the other end portion opposite to the side of the developing cartridge where the developing roller is provided is pressed downward (toward the developing cartridge accommodating portion), the developing cartridge is accommodated in the developing cartridge accommodating portion, thereby completing the mounting of the developing cartridge to the drum assembly. When the developing cartridge is detached from the drum assembly, the other end portion of the developing cartridge is lifted up, so that the developing cartridge is pulled out from the developing cartridge housing portion, thereby detaching the developing cartridge from the drum assembly.
When printing, the developing box and the drum assembly are simultaneously installed in the printer, and the printing is realized through charging, exposure, development, transfer printing, fixation, cleaning and electricity elimination. Wherein charging, exposing, cleaning, and de-energizing are mainly accomplished on the drum assembly. In the cleaning stage, the drum component is contacted with the photosensitive drum through the cleaning roller, so that the redundant carbon powder on the photosensitive drum is cleaned into the waste powder bin after being rubbed by the cleaning roller. Typically, the cleaning roller structure is a sponge layer added outside the iron shaft. The cleaning roller is in contact with the photosensitive drum, and generally the friction force is large, particularly, the two ends of the cleaning roller are required, so that the cleaning of the photosensitive drum can be ensured, but the abrasion of the photosensitive drum is easy to cause as a result.
In the transfer stage, the drum assembly is contacted with the photosensitive drum by the transfer roller, so that the developing carbon powder passing through the photosensitive drum is transferred to the printing paper. In general, the transfer roller structure is to add a sponge layer outside the iron shaft. The transfer roller is high in contact friction with the photosensitive drum, particularly two ends of the transfer roller, so that the developing carbon powder on the photosensitive drum can be effectively transferred onto printing paper, but the abrasion of the photosensitive drum is easy to cause, particularly the two end positions of the photosensitive drum affect the printing service life of the photosensitive drum, and further the service life of a drum assembly is affected.
Disclosure of Invention
In order to achieve the main purpose of the invention, the invention provides a drum box which has a simple structure and can prolong the service life of a photosensitive drum.
In order to achieve the main object of the present invention, there is provided a drum cartridge comprising a frame having a waste toner hopper; the transfer roller is parallel to the axis of the photosensitive drum and is arranged on the frame in a mutually abutting manner; the cleaning roller is arranged at the opening of the waste powder bin in parallel with the axis of the photosensitive drum and keeping a gap with each other; the transfer roller comprises a shaft core and a shaft sleeve, wherein the shaft sleeve is sleeved on the shaft core, a first groove is formed between the shaft sleeve and the shaft core, the cleaning roller comprises an iron shaft and a sleeve, the sleeve is sleeved on the iron shaft, and a second groove is formed between the sleeve and the iron shaft.
Therefore, the first groove is formed between the shaft sleeve and the shaft core, the second groove is formed between the sleeve and the iron shaft, the pressure of the photosensitive drum can be effectively relieved by utilizing the groove structures of the cleaning roller and the transfer roller, the friction force to the photosensitive drum is reduced, and the service life of the photosensitive drum is prolonged. And moreover, the drum box is simple in structure, the printing effect of products is not affected, and the service life of the drum box is prolonged.
In a further scheme, the first groove is annularly arranged on the outer wall of the shaft core or the inner wall of the shaft sleeve.
In a further scheme, the second groove is annularly arranged on the outer wall of the iron shaft or the inner wall of the sleeve.
In a further scheme, the number of the first grooves is two, and the two first grooves are respectively adjacent to two ends of the shaft sleeve.
In a further scheme, the number of the second grooves is two, and the two second grooves are respectively adjacent to two ends of the sleeve.
In a further scheme, the length of the first groove in the axial direction of the shaft is smaller than 30 mm, and the length of the second groove in the axial direction of the iron shaft is smaller than 30 mm.
In a further scheme, when the first groove is formed on the outer wall of the shaft core in a circular ring shape, the minimum diameter of the first groove in the radial direction of the shaft core is 4 mm; when the first groove is formed on the inner wall of the shaft sleeve in a circular ring shape, the maximum diameter of the first groove in the radial direction of the shaft core is 6 mm; when the second groove is formed on the outer wall of the iron shaft in a circular ring shape, the minimum diameter of the second groove in the radial direction of the iron shaft is 4 mm; when the second groove is formed on the inner wall of the sleeve in a circular ring shape, the maximum diameter of the second groove in the radial direction of the iron shaft is 6 mm.
In a further scheme, two ends of the outer wall of the shaft sleeve are provided with first bevel angles.
Still further, the sleeve outer wall has second bevel angles at both ends.
Therefore, the two ends of the outer wall of the shaft sleeve are provided with the first oblique angles, the two ends of the outer wall of the sleeve are provided with the second oblique angles, the pressure at the two ends of the photosensitive drum can be effectively relieved by utilizing the oblique angle structure of the shaft sleeve and the sleeve, the friction force to the two ends of the photosensitive drum is reduced, and the service life of the photosensitive drum is prolonged. And moreover, the drum box is simple in structure, the printing effect of products is not affected, and the service life of the drum box is prolonged.
In a further scheme, the length of the first bevel angle in the axial direction of the shaft sleeve is smaller than 20 mm, and the height of the first bevel angle in the radial direction of the shaft sleeve is smaller than 5 mm; the length of the second bevel angle in the axial direction of the sleeve is less than 20 mm, and the height of the second bevel angle in the radial direction of the sleeve is less than 5 mm.
Drawings
Fig. 1 is a structural view of a first embodiment of the drum cartridge of the present invention.
Fig. 2 is a cross-sectional view of a first embodiment of the drum cartridge of the present invention.
Fig. 3 is a cross-sectional view of a transfer roller in a first embodiment of the drum cartridge of the present invention.
Fig. 4 is a structural view of the center shaft in the first embodiment of the drum cartridge of the present invention.
Fig. 5 is a cross-sectional view of a cleaning roller in a first embodiment of the drum cartridge of the present invention.
Fig. 6 is a structural view of the sleeve in the first embodiment of the drum cartridge of the present invention.
Fig. 7 is a structural view of the iron shaft in the second embodiment of the drum cartridge of the present invention.
Fig. 8 is a structural view of a sleeve in a second embodiment of the drum cartridge of the present invention.
Fig. 9 is a structural view of a sleeve in a third embodiment of the drum cartridge of the present invention.
Fig. 10 is a structural view of a sleeve in a third embodiment of the drum cartridge of the present invention.
Fig. 11 is a structural view of a sleeve in a fourth embodiment of the drum cartridge of the present invention.
Fig. 12 is a structural view of a sleeve in a fourth embodiment of the drum cartridge of the present invention.
The invention is further described below with reference to the drawings and examples.
Detailed Description
First embodiment of drum cartridge:
Referring to fig. 1 and 2, the drum cartridge 1 is composed of an upper frame 21 and a lower frame 22, the upper frame 21 having a receiving portion 211, a developer cartridge (not shown) being detachably mounted in the receiving portion 211, a waste toner hopper 221, a photosensitive drum 3, a transfer roller 5, and a cleaning roller 4 being provided in the lower frame 22 of the drum cartridge 1. The photosensitive drum 3 is rotatably supported around a rotation axis between both end walls of the lower frame 22, the transfer roller 5 is provided on the lower frame 22 in parallel with the axis of the photosensitive drum 3 and in contact with each other, and the cleaning roller 4 is provided on the opening of the waste bin 221 in parallel with the axis of the photosensitive drum 3 with a gap therebetween.
Referring to fig. 3 to 6, the transfer roller 5 includes a shaft core 51 and a shaft sleeve 52, the shaft sleeve 52 is sleeved on the shaft core 51, a first groove 511 is provided between the shaft sleeve 52 and the shaft core 51, and the first groove 511 is formed on the outer wall of the shaft core 51 in a ring shape. The number of the first grooves 511 in this embodiment is two, and the two first grooves 511 are adjacent to two ends of the sleeve 52, respectively. And, the minimum diameter of the first groove 511 in the radial direction of the shaft core 51 is 4 mm, the length of the first groove 511 in the axial direction of the shaft core 51 is less than 30 mm, and preferably, the length of the first groove 511 in the axial direction of the shaft core 51 is less than or equal to 10 mm.
The cleaning roller 4 comprises an iron shaft 41 and a sleeve 42, the sleeve 42 is sleeved on the iron shaft 41, a second groove 421 is arranged between the sleeve 42 and the iron shaft 41, and the second groove 421 is formed on the inner wall of the sleeve 42 in a circular ring shape. The number of the second grooves 421 in this embodiment is two, and the two second grooves 421 are adjacent to two ends of the sleeve 42. And, the maximum diameter of the second groove 421 in the radial direction of the iron shaft 41 is 6 mm, and the length of the second groove 421 in the axial direction of the iron shaft 41 is less than 30 mm, preferably, the length of the second groove 421 in the axial direction of the iron shaft 41 is less than or equal to 10 mm.
When the developer cartridge is mounted to the drum cartridge 1, the developer cartridge is mounted in the accommodating portion 211, and the developing roller of the developer cartridge is brought into contact with the photosensitive drum 3. When the developer cartridge is to be detached from the drum cartridge 1, the developer cartridge is lifted up, so that the developer cartridge is pulled out from the accommodating portion 211. When the printer starts to work, the developing roller of the developer box is contacted with the photosensitive drum 3, after the photosensitive drum 3 is exposed by a printing signal, carbon powder on the developing roller is transferred onto the photosensitive drum 3 under the combined effect of static electricity and developing bias voltage generated by contact friction of the conductive rubber layer of the developing roller and a powder discharging knife, and then the printing process is realized through charging, exposure, development, transfer printing, fixation, cleaning and power elimination. Wherein charging, exposure, cleaning, transfer printing are mainly carried out on the drum cartridge 1.
In the cleaning stage, the drum box 1 is used for enabling the excessive carbon powder on the photosensitive drum 3 to be cleaned into the waste powder bin 221 after the friction of the cleaning roller 4 by the contact friction of the cleaning roller 4 on the photosensitive drum 3. Since the cleaning roller 4 has the second groove 421 structure, the pressing pressure of the photosensitive drum 3 in contact with the cleaning roller 4 is reduced and the friction force is reduced, but the contact end of the cleaning roller 4 with the photosensitive drum 3 is still an interference fit, so that the excessive toner on the photosensitive drum 3 can be effectively cleaned.
In the transfer stage, the drum cartridge 1 is brought into contact with the photosensitive drum 3 by the transfer roller 5, and the toner developed on the photosensitive drum 3 is transferred to the printing paper. Since the transfer roller 5 has the first groove 511 structure, the pressing pressure of the photosensitive drum 3 in contact with the transfer roller 5 is reduced, and thus the friction force is reduced, it is possible to effectively ensure that the developing toner is transferred onto the printing paper without wearing the photosensitive drum 3.
The drum box 1 of the embodiment can effectively relieve the pressure of the photosensitive drum 3 by utilizing the groove structures of the cleaning roller 4 and the transfer roller 5, reduce the friction force on the photosensitive drum 3 and improve the service life of the photosensitive drum 3. In addition, the drum box 1 has a simple structure, does not influence the printing effect of products, and prolongs the service life of the drum box 1.
Second embodiment of drum cartridge:
as a description of the second embodiment of the drum cartridge of the present invention, only the differences from the first embodiment of the drum cartridge will be described below.
Referring to fig. 7 and 8, the second grooves 411 are formed in a ring shape on the outer wall of the iron shaft 41 of the cleaning roller 4, and in this embodiment, the number of the second grooves 411 is two, and the two second grooves 411 are adjacent to two ends of the sleeve 42 respectively. And, the minimum diameter of the second groove 411 in the radial direction of the iron shaft 41 is 4 mm, the length of the second groove 411 in the axial direction of the iron shaft 41 is less than 30 mm, and preferably, the length of the second groove 411 in the axial direction of the iron shaft 41 is less than or equal to 10 mm. The first grooves 521 are formed on the inner wall of the sleeve 52 of the transfer roller 5 in a ring shape, and in this embodiment, the number of the first grooves 521 is two, and the two first grooves 521 are adjacent to two ends of the sleeve 52 respectively. And, the maximum diameter of the first groove 521 in the radial direction of the shaft core 51 is 6 mm, the length of the first groove 521 in the axial direction of the shaft core 51 is less than 30 mm, and preferably, the length of the first groove 521 in the axial direction of the shaft core 51 is less than or equal to 10 mm.
The drum box 1 of the embodiment can effectively relieve the pressure of the photosensitive drum 3 by utilizing the groove structures of the cleaning roller 4 and the transfer roller 5, reduce the friction force on the photosensitive drum 3 and improve the service life of the photosensitive drum 3. In addition, the drum box 1 has a simple structure, does not influence the printing effect of products, and prolongs the service life of the drum box 1.
Third embodiment of drum cartridge:
as a description of the third embodiment of the drum cartridge of the present invention, only the differences from the first embodiment of the drum cartridge will be described below.
Referring to fig. 9, both ends of the outer wall of the sleeve 52 of the transfer roller 5 have a first bevel 522, the length of the first bevel 522 in the axial direction of the sleeve 52 is less than 20 mm, and the height of the first bevel 522 in the radial direction of the sleeve 52 is less than 5 mm. Preferably, the length of the first bevel 522 in the axial direction of the sleeve 52 is less than 10 mm, and the height of the first bevel 522 in the radial direction of the sleeve 52 is between 1 mm and 4 mm. The length of the first bevel 522 in the axial direction of the sleeve 52 in this embodiment is 3.4 mm, and the height of the first bevel 522 in the radial direction of the sleeve 52 is 1.4 mm.
Referring to fig. 10, both ends of the outer wall of the sleeve 42 of the cleaning roller 4 have second bevel angles 422, the length of the second bevel angles 422 in the axial direction of the sleeve 42 is less than 20 mm, and the height of the second bevel angles 422 in the radial direction of the sleeve 42 is less than 5 mm. Preferably, the length of the second bevel 422 in the axial direction of the sleeve 42 is less than 10 mm, and the height of the second bevel 422 in the radial direction of the sleeve 42 is between 1mm and 4 mm. The length of the second bevel 422 in the axial direction of the sleeve 42 is 3.4 mm, and the height of the second bevel 422 in the radial direction of the sleeve 42 is 1.4 mm.
The drum box 1 of the embodiment can effectively relieve the pressure at the two ends of the photosensitive drum 3 by utilizing the bevel angle structure of the shaft sleeve 52 and the sleeve 42, reduce the friction force on the two ends of the photosensitive drum 3 and prolong the service life of the photosensitive drum 3. In addition, the drum box 1 has a simple structure, does not influence the printing effect of products, and prolongs the service life of the drum box 1.
Fourth embodiment of drum cartridge:
as a description of the fourth embodiment of the drum cartridge of the present invention, only the differences from the second embodiment of the drum cartridge will be described below.
Referring to fig. 11, both ends of the outer wall of the sleeve 42 of the cleaning roller 4 have second bevel angles 422, the length of the second bevel angles 422 in the axial direction of the sleeve 42 is less than 20 mm, and the height of the second bevel angles 422 in the radial direction of the sleeve 42 is less than 5 mm. Preferably, the length of the second bevel 422 in the axial direction of the sleeve 42 is less than 10 mm, and the height of the second bevel 422 in the radial direction of the sleeve 42 is between 1 mm and 4 mm. The length of the second bevel 422 in the axial direction of the sleeve 42 is 3.4 mm, and the height of the second bevel 422 in the radial direction of the sleeve 42 is 1.4 mm.
Referring to fig. 12, both ends of the outer wall of the sleeve 52 of the transfer roller 5 have a first bevel 522, the length of the first bevel 522 in the axial direction of the sleeve 52 is less than 20 mm, and the height of the first bevel 522 in the radial direction of the sleeve 52 is less than 5 mm. Preferably, the length of the first bevel 522 in the axial direction of the sleeve 52 is less than 10 mm, and the height of the first bevel 522 in the radial direction of the sleeve 52 is between 1 mm and 4 mm. The length of the first bevel 522 in the axial direction of the sleeve 52 in this embodiment is 3.4 mm, and the height of the first bevel 522 in the radial direction of the sleeve 52 is 1.4 mm.
The drum box 1 of the embodiment can effectively relieve the pressure at the two ends of the photosensitive drum 3 by utilizing the bevel angle structure of the shaft sleeve 52 and the sleeve 42, reduce the friction force on the two ends of the photosensitive drum 3 and prolong the service life of the photosensitive drum 3. In addition, the drum box 1 has a simple structure, does not influence the printing effect of products, and prolongs the service life of the drum box 1.
The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications made according to the construction, characteristics and principles of the present invention shall be included in the scope of the present invention.
Claims (10)
1. A drum cartridge comprising:
a frame having a waste bin;
a photosensitive drum rotatably supported between both end walls of the frame about a rotation axis;
a transfer roller which is parallel to the photosensitive drum axis and is arranged on the frame in a mutually abutting manner;
A cleaning roller disposed at the waste bin opening in parallel with the photosensitive drum axis;
in a cleaning stage, the cleaning roller and the photosensitive drum are in contact with each other;
The method is characterized in that:
The transfer printing roller comprises a shaft core and a shaft sleeve, the shaft sleeve is sleeved on the shaft core, a first groove is formed between the shaft sleeve and the shaft core, and the first groove is used for reducing the compression pressure of the transfer printing roller on the photosensitive drum;
the cleaning roller comprises an iron shaft and a sleeve, wherein the sleeve is sleeved on the iron shaft, a second groove is formed between the sleeve and the iron shaft, and the second groove is used for reducing the compression pressure of the cleaning roller to the photosensitive drum.
2. Drum cartridge according to claim 1, characterized in that:
The first groove is annularly arranged on the outer wall of the shaft core or the inner wall of the shaft sleeve.
3. Drum cartridge according to claim 1 or 2, characterized in that:
The second groove is annularly arranged on the outer wall of the iron shaft or the inner wall of the sleeve.
4. A drum cartridge as claimed in claim 3, wherein:
The number of the first grooves is two, and the two first grooves are respectively adjacent to two ends of the shaft sleeve.
5. Drum cartridge according to claim 4, characterized in that:
the number of the second grooves is two, and the two second grooves are respectively adjacent to two ends of the sleeve.
6. Drum cartridge according to claim 5, characterized in that:
the length of the first groove in the axial direction of the shaft is less than 30 mm;
the length of the second groove in the axial direction of the iron shaft is less than 30 mm.
7. Drum cartridge according to claim 6, characterized in that:
When the first groove is annularly arranged on the outer wall of the shaft core, the minimum diameter of the first groove in the radial direction of the shaft core is 4 mm;
when the first groove is annularly arranged on the inner wall of the shaft sleeve, the maximum diameter of the first groove in the radial direction of the shaft core is 6 mm;
when the second groove is annularly arranged on the outer wall of the iron shaft, the minimum diameter of the second groove in the radial direction of the iron shaft is 4 mm;
When the second groove is annularly arranged on the inner wall of the sleeve, the maximum diameter of the second groove in the radial direction of the iron shaft is 6 mm.
8. Drum kit according to any one of claims 4 to 7, wherein:
the two ends of the outer wall of the shaft sleeve are provided with first oblique angles.
9. Drum cartridge according to claim 8, characterized in that:
The two ends of the outer wall of the sleeve are provided with second bevel angles.
10. Drum cartridge according to claim 9, characterized in that:
the length of the first bevel angle in the axial direction of the shaft sleeve is less than 20 mm, and the height of the first bevel angle in the radial direction of the shaft sleeve is less than 5 mm;
The length of the second bevel angle in the axial direction of the sleeve is less than 20 mm, and the height of the second bevel angle in the radial direction of the sleeve is less than 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810251072.1A CN108267944B (en) | 2018-03-26 | 2018-03-26 | Drum box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810251072.1A CN108267944B (en) | 2018-03-26 | 2018-03-26 | Drum box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108267944A CN108267944A (en) | 2018-07-10 |
| CN108267944B true CN108267944B (en) | 2024-06-28 |
Family
ID=62777463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810251072.1A Active CN108267944B (en) | 2018-03-26 | 2018-03-26 | Drum box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108267944B (en) |
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| CN206421162U (en) * | 2015-09-30 | 2017-08-18 | 兄弟工业株式会社 | Drum unit and image forming apparatus |
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2018
- 2018-03-26 CN CN201810251072.1A patent/CN108267944B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009130A (en) * | 1998-06-24 | 2000-01-11 | Kanegafuchi Chem Ind Co Ltd | Rubber roller and manufacture thereof |
| JP2004101599A (en) * | 2002-09-05 | 2004-04-02 | Ricoh Co Ltd | Image forming apparatus |
| CN102289182A (en) * | 2011-08-30 | 2011-12-21 | 珠海天威飞马打印耗材有限公司 | Processing box |
| CN207965498U (en) * | 2018-03-26 | 2018-10-12 | 珠海天威飞马打印耗材有限公司 | Drum box |
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| CN108267944A (en) | 2018-07-10 |
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