CN201689281U - Image forming unit - Google Patents
Image forming unit Download PDFInfo
- Publication number
- CN201689281U CN201689281U CN201020107062XU CN201020107062U CN201689281U CN 201689281 U CN201689281 U CN 201689281U CN 201020107062X U CN201020107062X U CN 201020107062XU CN 201020107062 U CN201020107062 U CN 201020107062U CN 201689281 U CN201689281 U CN 201689281U
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- China
- Prior art keywords
- developer roll
- photosensitive drums
- image formation
- formation unit
- eccentric wheel
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- 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.)
- Expired - Lifetime
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- Electrophotography Configuration And Component (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The utility model relates to an image forming unit, comprising a shell, a light-sensitive drum, a developing roller, a pressing locking mechanism for forcing the developing roller and the light-sensitive drum to be close and generate interference fit, and an isolating mechanism, wherein the light-sensitive drum, the developing roller and the pressing locking mechanism are positioned in the shell; the isolating mechanism leads the light-sensitive drum and the developing roller to be separated before the image forming unit is not started for use. In the long-term transportation process, the surface of the light-sensitive drum is not contacted with a rubber material on the developing roller, therefore, a coating layer on the surface of the light-sensitive drum is not polluted, and the technical problem that the existing image forming unit is extremely easy to pollute the coating layer of the surface of the light-sensitive drum in the long-term transportation process due to long-term contact of the surface of the light-sensitive drum and the rubber material on the developing roller is solved.
Description
Technical field
The utility model relates to a kind of image formation unit.
Background technology
Use a kind of image formation unit in the image processing system of prior art, include photosensitive drums and developer roll on this image formation unit at least.Be provided with charge member in the image formation unit, in the course of work of image formation unit, this charge member makes photosensitive drum surface form a layer charge; Figure forms the unit and receives the information that comes from the outside, and makes photosensitive drum surface electric charge exposure by the exposure unit in the image formation unit, and forms and the corresponding electrostatic latent image of this information; Be provided with developer in the image formation unit, in the image formation unit course of work, this developer is coated in the developer roll surface, and forms one deck developer layer; Developer roll in the image formation unit receives from the voltage on the image formation unit, and developer roll contacts with photosensitive drums, and the lip-deep developer of developer roll is passed to photosensitive drums, makes the latent electrostatic image developing of photosensitive drum surface.
The image formation unit of prior art, after producing, photosensitive drums and developer roll in the image formation unit just are in contact condition.The developer roll of prior art is to be made by elastomeric material, and elastomeric material is influenced by the humiture of environment, very easily produces chemistry or physical change.In the long period transportation process of image formation unit, photosensitive drum surface elastomeric material long-term and on the developer roll contacts, and elastomeric material is subjected to the influence that humiture changes, and very easily pollutes the photosensitive drum surface coating, make the photosensitive drums can't operate as normal, influence the operate as normal of image formation unit.
The utility model content
The utility model provides a kind of image formation unit, contacts the technical matters of very easily polluting the photosensitive drum surface coating to solve conventional images formation unit elastomeric material long-term because of photosensitive drum surface and on the developer roll in the long period transportation process.
In order to solve above technical matters, the technical scheme that the utility model is taked is:
A kind of image formation unit, comprise housing, photosensitive drums, developer roll and force described developer roll and the close locking mechanism that urges that produces interference fit of photosensitive drums, described photosensitive drums, developer roll and urge locking mechanism and be positioned at housing, it is characterized in that, also comprise interrupter, described interrupter makes described photosensitive drums separate with developer roll before described image formation unit does not open and use.
Described interrupter is the clamping plate of extracting out that are arranged between photosensitive drums and the developer roll.
Described photosensitive drums is supported on the described housing by photosensitive drum shaft, and described developer roll is supported on the described housing by the development roll shaft, and described interrupter is the wedge that can move along rotor shaft direction that is arranged between described photosensitive drum shaft and the development roll shaft.
Described photosensitive drums is supported on the described housing by photosensitive drum shaft, described developer roll is supported on the described housing by the development roll shaft, described interrupter is the eccentric wheel that is arranged at the gear of described photosensitive drum shaft end and is arranged at the developer roll shaft end, the described eccentric wheel periphery far away apart from the axle center is provided with the tooth with described gearing mesh, eccentric wheel periphery that described gear is far away in the distance axle center and the engagement of described eccentric wheel.
Described photosensitive drums is supported on the described housing by photosensitive drum shaft, described developer roll is supported on the described housing by the development roll shaft, described interrupter is the eccentric wheel that is arranged at the gear of described developer roll shaft end and is arranged at the photosensitive drum shaft end, the described eccentric wheel periphery far away apart from the axle center is provided with the tooth with described gearing mesh, eccentric wheel periphery that described gear is far away in the distance axle center and the engagement of described eccentric wheel.
Described eccentric wheel is an offset cam.
After having adopted technique scheme, owing to increased interrupter, interrupter makes photosensitive drums separate with developer roll and do not contact before image formation unit does not open and use, therefore, photosensitive drum surface can not contact with elastomeric material on the developer roll in the long period transportation process, just can not pollute the photosensitive drum surface coating, solve conventional images formation unit elastomeric material long-term because of photosensitive drum surface and on the developer roll in the long period transportation process and contacted the technical matters of very easily polluting the photosensitive drum surface coating.
Description of drawings
Fig. 1 is the structural representation of image formation unit.
Fig. 2 is the structural representation of interrupter among the utility model embodiment one.
Fig. 3 is installed to the preceding structural representation of image formation unit for interrupter among the utility model embodiment two.
Fig. 4 is installed to structural representation behind the image formation unit for interrupter among the utility model embodiment two.
Fig. 5 is installed to the preceding structural representation of image formation unit for interrupter among the utility model embodiment three.
Fig. 6 is installed to the preceding structural representation of image formation unit for interrupter among the utility model embodiment three.
Fig. 7 is the structural representation that can adopt second kind of image formation unit of the interrupter among the embodiment one to three.
Fig. 8 is the structural representation that can adopt the third image formation unit of the interrupter among the embodiment one to three.
Embodiment
Embodiment one
Be illustrated in figure 1 as the structural representation of image formation unit, this image formation unit comprises photosensitive drums storehouse 10, developer roll storehouse 20 and powder storehouse 30, and photosensitive drums storehouse 10, developer roll storehouse 20 and powder storehouse 30 form the housing of image formation unit jointly.Photosensitive drums storehouse 10 is provided with photosensitive drums 1 and charge member 3; Developer roll storehouse 20 is provided with developer roll 2; Store the developer (not shown) in the powder storehouse 30.Be provided with flexible member 4 between powder storehouse 30 and the developer roll storehouse 20, developer roll storehouse 20 powder storehouse 30 relatively moves forward and backward, and 10 relative powder storehouses 30, photosensitive drums storehouse are motionless; One end of flexible member 4 contacts with powder storehouse 30, and the other end contacts with developing chamber 20, and for developing chamber 20 provides an elastic force, developer roll 2 is closely contacted with photosensitive drums 1.Photosensitive drums 1 is provided with photosensitive drum shaft 14, and developer roll 2 is provided with development roll shaft 21, and photosensitive drums 1 is supported on the described photosensitive drums storehouse 10 by photosensitive drum shaft 14, and developer roll 2 is supported on the developer roll storehouse 20 by development roll shaft 21.Described flexible member 4 is for urging the part of locking mechanism.
In the image formation unit course of work, powder storehouse 30 makes developer roll 2 surfaces form developer layer for the developer roll 2 in the developer roll storehouse 20 provides developer; Charge member 3 in the photosensitive drums storehouse 10 is filled a layer charge with for photosensitive drums 1 surface, the photosensitive drums 1 that has an electric charge forms the corresponding electrostatic latent image of input information with image formation unit under the exposure unit effect of image formation unit, developer roll 2 contacts with photosensitive drums 1, and the developer layer on developer roll 2 surfaces makes the latent electrostatic image developing on the photosensitive drums 1.In above-mentioned image formation unit, also be provided with interrupter.Interrupter as shown in Figure 2, in the transportation of image formation unit, storage process, the clamping plate 40 that are provided with between photosensitive drums 1 and developer roll 2 make photosensitive drums 1 not contact in transportation, storage process with developer roll 2, thereby prevent developer roll 2 pollution photosensitive drums 1.
When image formation unit used, these clamping plate 40 were drawn out, and at this moment, no longer included anti-pollution element between photosensitive drums 1 and the developer roll 2, and photosensitive drums 1 contacts with developer roll 2, and operate as normal.
Clamping plate 40 shown in the figure can be arbitrarily, be arranged between photosensitive drums and the developer roll, have certain thickness interrupter, such as paper etc.
Embodiment two
The structural representation of image formation unit is identical with embodiment one, does not give unnecessary details at this; But interrupter difference wherein.The interrupter of present embodiment is as Fig. 3, the wedge 41 shown in 4, and when photosensitive drums 1 contacted with developer roll 2, the distance between photosensitive drum shaft 14 and the development roll shaft 21 was L1, the width of wedge 41 is L2, wherein L2＞L1.After wedge 41 inserted between photosensitive drum shaft 14 and the development roll shaft 21, as shown in Figure 4, because L2＞L1, photosensitive drums 1 was separated with developer roll 2, and forms gap H, and at this moment, photosensitive drums 1 does not contact with developer roll 2.
When image formation unit uses, wedge 41 is taken out along axis direction from image formation unit, photosensitive drums 1 and developer roll are promptly replied contact condition, and operate as normal, as shown in Figure 3.
Embodiment three
The structural representation of image formation unit is identical with embodiment one, does not give unnecessary details at this; But interrupter difference wherein.The interrupter of present embodiment such as Fig. 5, shown in 6, be gear that is arranged at the photosensitive drum shaft end and the eccentric wheel 42 that is arranged at the developer roll shaft end, eccentric wheel 42 periphery far away apart from the axle center is provided with the tooth 42a with gearing mesh, eccentric wheel 42 peripheries that gear is far away in the distance axle center and eccentric wheel 42 engagements.
As seen from the figure, the diameter of the part of eccentric wheel 42 also is provided with tooth 42a greater than the diameter of developer roll 2 on this part, and the diameter of the remainder of the eccentric wheel 42 all diameter than developer roll 2 is little, and is not provided with tooth.
As shown in Figure 5, when image formation unit in transportation, in the storage process, the tooth 42a on the eccentric wheel 42 and the gearing mesh on the photosensitive drums 1 because the diameter of this part is bigger than the diameter of developer roll 2, so photosensitive drums 1 do not contact with developer roll 2, and formation spacing h.
As shown in Figure 6, after image formation unit is installed on the image formation unit, gear on the photosensitive drums 1 receives the powered rotation from image formation unit, on the eccentric wheel 42 with photosensitive drums 1 cog the engagement tooth 42a rotate thereupon, the part greater than the developer roll diameter no longer is between photosensitive drums 1 and the developer roll 2 on the eccentric wheel 42 at this moment, and photosensitive drums 1 contacts with developer roll 2.Be not provided with gear owing to remainder again, eccentric wheel 42 no longer rotates, so cocoa guarantees the operate as normal of photosensitive drums 1 and developer roll 2.
Certainly, eccentric wheel 42 also can exchange with the position of gear, and promptly eccentric wheel 42 is arranged on the photosensitive drum shaft 14, and gear is arranged on the development roll shaft, eccentric wheel can with the gearing mesh on the developer roll 2, make photosensitive drums 1 not contact or contact with developer roll 2.
Be illustrated in figure 7 as the structural representation of second kind of image formation unit that the utility model adopts.This image formation unit is made up of photosensitive drums storehouse 10a and developer roll storehouse 20a.
Be provided with photosensitive drums 1a, charge member 3a, photosensitive drums storehouse housing 11a and charge member housing 12a in the 10a of photosensitive drums storehouse; Photosensitive drums 1a is supported in the housing 11a of photosensitive drums storehouse, and charge member 3a is supported in the charge member housing 12a, and charge member housing 12a supports and be fixed on the top of photosensitive drums storehouse housing 11a.Also be provided with photosensitive drum shaft 14a on the photosensitive drums 1a.Also be provided with gland 13a and flexible member 4a on the housing 11a of photosensitive drums storehouse, flexible member 4a is fixed on the gland 13a.
Include developer roll 2a and developer (not shown) in the 20a of developer roll storehouse; Developer roll 2a is supported in the 20a of developer roll storehouse, and developer is stored in the developing chamber 20a.Developer roll 2a is provided with development roll shaft 21a.
As seen from the figure, after developer roll storehouse 20a is installed on the 10a of photosensitive drums storehouse, gland 13a is fixed on the housing 11a of photosensitive drums storehouse, at this moment, flexible member 4a on the housing 11a of photosensitive drums storehouse contacts with developer roll storehouse 20a, and, the developer roll 2a in the 20a of developer roll storehouse is moved to the direction of photosensitive drums 1a, and closely contact with photosensitive drums 1a for developer roll storehouse 20a provides elastic force.
Flexible member 4a on this image formation unit also can be fixed on the 20a of developer roll storehouse.
The foregoing description one to three described interrupter all can combine respectively with this image formation unit respectively and form the image formation unit with interrupter.
Be illustrated in figure 8 as the structural representation of the third image formation unit of the utility model.Know that by figure this image formation unit is made up of photosensitive drums storehouse 10b, developer roll storehouse 20b and image formation unit housing 30b.Photosensitive drums storehouse 10b and developer roll storehouse 20b are removably mounted on the image formation unit housing 30b, and can move relative to image formation unit housing 30b.
Image formation unit housing 30b is provided with gland 31b; Photosensitive drums storehouse 10b is provided with photosensitive drums 1b, charge member 3b, photosensitive drums storehouse housing 11b and charge member housing 12b; Charge member housing 12b upper support has charge member 3b, and charge member housing 12b is supported on the housing 11b of photosensitive drums storehouse, and can move with photosensitive drums storehouse housing 11b.Developer roll storehouse 20b upper support has developer roll 2b, and developer roll 2b is provided with development roll shaft 21b.
Be provided with flexible member 4b between image formation unit housing 30b and the photosensitive drums storehouse 10b, this flexible member 4b is arranged on the housing 11b of photosensitive drums storehouse, after photosensitive drums storehouse 10b and developer roll storehouse 20b are installed on the image formation unit housing 30, gland 31b on the image formation unit housing 30b is fixed in the process of image formation unit housing 30b, gland 31b forces developer roll storehouse 20b to move to the direction of photosensitive drums 1b, under the resilient force of flexible member 4b, photosensitive drums 1b closely contacts with developer roll 2b.
Flexible member 4b on this image formation unit also can be arranged on the image formation unit housing 30b.
The foregoing description one to three described interrupter all can combine respectively with this image formation unit respectively and form the image formation unit with interrupter.
Claims (6)
1. image formation unit, comprise housing, photosensitive drums, developer roll and force described developer roll and the close locking mechanism that urges that produces interference fit of photosensitive drums, described photosensitive drums, developer roll and urge locking mechanism and be positioned at housing, it is characterized in that, also comprise interrupter, described interrupter makes described photosensitive drums separate with developer roll before described image formation unit does not open and use.
2. image formation unit as claimed in claim 1 is characterized in that, described interrupter is the clamping plate of extracting out that are arranged between photosensitive drums and the developer roll.
3. image formation unit as claimed in claim 1, it is characterized in that, described photosensitive drums is supported on the described housing by photosensitive drum shaft, described developer roll is supported on the described housing by the development roll shaft, and described interrupter is the wedge that can move along rotor shaft direction that is arranged between described photosensitive drum shaft and the development roll shaft.
4. image formation unit as claimed in claim 1, it is characterized in that, described photosensitive drums is supported on the described housing by photosensitive drum shaft, described developer roll is supported on the described housing by the development roll shaft, described interrupter is the eccentric wheel that is arranged at the gear of described photosensitive drum shaft end and is arranged at the developer roll shaft end, the described eccentric wheel periphery far away apart from the axle center is provided with the tooth with described gearing mesh, eccentric wheel periphery that described gear is far away in the distance axle center and the engagement of described eccentric wheel.
5. image formation unit as claimed in claim 1, it is characterized in that, described photosensitive drums is supported on the described housing by photosensitive drum shaft, described developer roll is supported on the described housing by the development roll shaft, described interrupter is the eccentric wheel that is arranged at the gear of described developer roll shaft end and is arranged at the photosensitive drum shaft end, the described eccentric wheel periphery far away apart from the axle center is provided with the tooth with described gearing mesh, eccentric wheel periphery that described gear is far away in the distance axle center and the engagement of described eccentric wheel.
6. as claim 4 or 5 described image formation units, it is characterized in that described eccentric wheel is an offset cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020107062XU CN201689281U (en) | 2010-01-16 | 2010-01-16 | Image forming unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020107062XU CN201689281U (en) | 2010-01-16 | 2010-01-16 | Image forming unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201689281U true CN201689281U (en) | 2010-12-29 |
Family
ID=43377560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020107062XU Expired - Lifetime CN201689281U (en) | 2010-01-16 | 2010-01-16 | Image forming unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201689281U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101603A1 (en) * | 2012-12-27 | 2014-07-03 | 珠海天威飞马打印耗材有限公司 | Processing cartridge for laser printer |
| CN106597827A (en) * | 2017-02-21 | 2017-04-26 | 珠海横琴大鑫智能科技有限公司 | Drum and powder integrated selenium drum |
| CN108062019A (en) * | 2016-11-09 | 2018-05-22 | 纳思达股份有限公司 | A kind of handle box and electronic imaging apparatus |
-
2010
- 2010-01-16 CN CN201020107062XU patent/CN201689281U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101603A1 (en) * | 2012-12-27 | 2014-07-03 | 珠海天威飞马打印耗材有限公司 | Processing cartridge for laser printer |
| CN108062019A (en) * | 2016-11-09 | 2018-05-22 | 纳思达股份有限公司 | A kind of handle box and electronic imaging apparatus |
| CN106597827A (en) * | 2017-02-21 | 2017-04-26 | 珠海横琴大鑫智能科技有限公司 | Drum and powder integrated selenium drum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI SEINE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHUHAI SAINA TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 519075 No. 63 pearl North Road, Xiangzhou District, Guangdong, Zhuhai Patentee after: Zhuhai Seine Printing Technology Co., Ltd. Address before: 519075 No. 63 pearl North Road, Xiangzhou District, Guangdong, Zhuhai Patentee before: Zhuhai Saina Technology Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151022 Address after: 6, 519075 A District, 4 buildings, 63 North Pearl Road, Zhuhai, Guangdong Patentee after: Zhuhai Aipeike Science and Technology Co Ltd Address before: 519075 No. 63 pearl North Road, Xiangzhou District, Guangdong, Zhuhai Patentee before: Zhuhai Seine Printing Technology Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 519075, Guangdong District, Xiangzhou, Zhuhai Avenue, No. 01, building 3883, 2 floor, 7 floor, B District, 02, 03, 04, 1, 2, 3, 4, 5, 05, Zhuhai Patentee after: Nasida Limited by Share Ltd Address before: 6, 519075 A District, 4 buildings, 63 North Pearl Road, Zhuhai, Guangdong Patentee before: Zhuhai Aipeike Science and Technology Co Ltd |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |