CN203965801U - Charged elements, developing cell and image processing system - Google Patents
Charged elements, developing cell and image processing system Download PDFInfo
- Publication number
- CN203965801U CN203965801U CN201420291675.1U CN201420291675U CN203965801U CN 203965801 U CN203965801 U CN 203965801U CN 201420291675 U CN201420291675 U CN 201420291675U CN 203965801 U CN203965801 U CN 203965801U
- Authority
- CN
- China
- Prior art keywords
- photosensitive drums
- processing system
- image processing
- pin electrode
- developer roll
- 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.)
- Expired - Fee Related
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
The utility model relates to a kind of charged elements, developing cell and image processing system, and a kind of image processing system is specifically provided, and comprising: photosensitive drums, is arranged in the main body of described image processing system; And charged elements, be arranged near described photosensitive drums, wherein, described charged elements has the pin electrode of a curved shape, and the pin electrode of described curved shape can make described photosensitive drums charged.The image color causing due to the bending of developer roll be can compensate thus inhomogeneous, the increase of complexity and the rising of manufacturing cost of manufacturing and installing can not caused simultaneously yet.
Description
Technical field
The utility model relates to a kind of charged elements, developing cell and image processing system, particularly, relates to a kind of the have charged elements of bending pin electrode, the developing cell with this charged elements and image processing system.
Background technology
Image processing system such as printer, duplicating machine etc. is widely used by people.Conventionally, comprise photosensitive drums, electro-mechanical part, exposure portion and development section as the developing cell of one of core of image processing system.Charged elements has been applied in high voltage conventionally, thereby and between photosensitive drums, form highfield so that produce corona discharge, make thus photosensitive drums with electric charge; Exposing unit is irradiated in charged photosensitive drums exposing light beam (being generally laser beam) to form the electrostatic latent image corresponding with corresponding color; Development section is supplied with corresponding toner to the electrostatic latent image in photosensitive drums, thereby makes electrostatic latent image visual to realize development; Photosensitive drums with the toner through developing contacts with intermediate transfer belt, and toner is transferred on intermediate transfer belt.
Fig. 1 is the structural drawing illustrating according to the partial configuration of the developing cell of prior art.As shown in Figure 1, this developing cell comprises photosensitive drums 10, cleaning section 12, electro-mechanical part 14 and development section 16.In the time of work, photosensitive drums 10 turns clockwise under the driving effect of driver element (not shown), experiences successively cleaning, removes electric treatment, rises electric treatment, exposure-processed, development treatment and six stages of transfer process.In the cleaning stage, the cleaning doctor 12a in cleaning section 12 carries out cleaning to remove toner residual in photosensitive drums 10 to photosensitive drums 10; Along with the instantaneous pin rotation of photosensitive drums 10, except the electric treatment stage, remove electric portion (not shown) and remove the residual charge in photosensitive drums 10; Subsequently, the processing stage electrifying, photosensitive drums 10 rotates to electro-mechanical part 14 places, and the pin electrode in electro-mechanical part 14 has been applied in high voltage, thereby so that and between photosensitive drums 10, form highfield generation corona discharge, make thus photosensitive drums 10 charged; Subsequently, in the exposure-processed stage, the exposing light beam L that exposure portion (not shown) is launched is irradiated in charged photosensitive drums 10 to form the electrostatic latent image corresponding with respective color; Photosensitive drums 10 continues rotation subsequently, and in the development treatment stage, the developer roll 16a of development section 16 is provided to the toner G of respective color in photosensitive drums 10, thereby makes the electrostatic latent image in photosensitive drums 10 visual; Subsequently, in the transfer process stage, photosensitive drums 10 coordinates that with intermediate transfer belt 18 toner G is transferred on intermediate transfer belt 18.Along with turning clockwise continuously of photosensitive drums 10, constantly repeat the processing in above-mentioned six stages.
Fig. 2 is the partial enlarged drawing that a part for the development section 16 of Fig. 1 is shown.Fig. 2 shows developer roll (being generally Mg roller) 16a in development section 16, be positioned near developer roll 16a for limiting doctor 16b and the photosensitive drums 10 of the toner G being attached on developer roll.As shown in Figure 2, between developer roll 16a and doctor 16b, there is a gap M, limit the amount of the toner G being attached on developer roll 16a by this gap M; In addition, between developer roll 16a and photosensitive drums 10, also there is a gap N0, can control the amount of the toner G being adsorbed onto in photosensitive drums 10 by this gap N0.
But in the time that toner G passes through the gap M between developer roll 16a and doctor 16b, due to the reacting force of toner G, developer roll 16a and doctor 16b all can be subject to expulsive force effect towards direction away from each other.Conventionally axial two ends and the doctor 16b of developer roll 16a are fixed in the main body of image processing system, thereby these parts can't be pushed power and move; But developer roll 16a but may be pushed compared with large moment loading because being subject to along the center section of axis, is also that developer roll 16a bends along axis.As shown in Figure 2, developer roll 16a along the center section of axis due to be subject to toner G reacting force and towards being offset away from the direction of doctor 16b, and midpoint the closer to developer roll 16a along axis, the side-play amount of generation is larger.Due to the skew of a part of developer roll 16a, the gap N0 between developer roll 16a and photosensitive drums 10 also no longer keeps original predeterminable range, but increases or reduce along with the side-play amount of developer roll 16a.As shown in Figure 2, gap N0 becomes greatly N1 along with the increase of the side-play amount of developer roll 16a, and it is larger to become the large gap N1 midpoint the closer to developer roll 16a along axis.
Due to the inconsistency of the gap N1 between developer roll 16a and photosensitive drums 10, the amount that is provided to the toner in photosensitive drums 10 also will occur inhomogeneous, gap N1 is larger, the amount that is provided to the toner in photosensitive drums 10 is fewer, therefore the middle position the closer to photosensitive drums 10 along axis, the amount of the toner adhering to is fewer, thereby on the image that causes finally printing, occurs the even phenomenon of density unevenness.
In TOHKEMY 2012-198578, provide a kind of for solving the solution of the even situation of above-mentioned density unevenness, wherein, make developer roll 16a have magnetic deviation on length direction (axially) by magnetic force different magnet is installed, thereby it is inhomogeneous to compensate by the difference of developer roll 16a magnetic force distribution in the longitudinal direction the image color that the bending (inconsistency of gap N1) due to developer roll 16a causes.But this scheme need to adopt and the magnet of arranging that magnetic force is different, this can make the complexity of manufacturing and installing greatly increase undoubtedly, and will make manufacturing cost increase.
Utility model content
The utility model is made for addressing the above problem, and a kind of charged elements of the pin electrode with curved shape, the developing cell with this charged elements and image processing system are specifically provided.
According to a kind of embodiment of the present utility model, a kind of image processing system is provided, comprising: photosensitive drums, is arranged in the main body of described image processing system; And charged elements, be arranged near described photosensitive drums, wherein, described charged elements has the pin electrode of a curved shape, and the pin electrode of described curved shape can make described photosensitive drums charged.
In above-mentioned image processing system, the length direction of the pin electrode of described curved shape is arranged to the axis direction along described photosensitive drums.
Above-mentioned image processing system also comprises: developer roll, be arranged on described photosensitive drums neighbouring toner is sent in described photosensitive drums, and wherein, the curved shape of described pin electrode is corresponding to the curved shape of described developer roll.
In above-mentioned image processing system, if the ultimate range between described developer roll and described photosensitive drums is greater than preset distance, the pin electrode of described curved shape is towards the direction bending near described photosensitive drums.
In above-mentioned image processing system, if the minor increment between described developer roll and described photosensitive drums is less than preset distance, the pin electrode of described curved shape is towards the direction bending away from described photosensitive drums.
In above-mentioned image processing system, the degree of crook of the pin electrode of described curved shape depends on ultimate range or the minor increment between described developer roll and described photosensitive drums.
In above-mentioned image processing system, the degree that the ultimate range between described developer roll and described photosensitive drums or minor increment depart from preset distance is larger, and the degree of crook of the pin electrode of described curved shape is larger.
According to another embodiment of the present utility model, a kind of developing cell for image processing system is also provided, comprising: photosensitive drums, is arranged in the main body of described developing cell; And charged elements, be arranged near described photosensitive drums, wherein, described charged elements has the pin electrode of a curved shape, and the pin electrode of described curved shape can make described photosensitive drums charged.
Above-mentioned developing cell also comprises: developer roll, be arranged on described photosensitive drums neighbouring toner is sent in described photosensitive drums, and wherein, the curved shape of described pin electrode is corresponding to the curved shape of described developer roll.
According to another embodiment of the present utility model, a kind of charged elements for image processing system is also provided, comprise: pin electrode, there is a curved shape and can make the photosensitive drums of described image processing system charged, wherein, described photosensitive drums is arranged in the main body of described image processing system, and described charged elements is arranged near described photosensitive drums.
Therefore, both can compensate according to above-mentioned embodiment of the present utility model the image color that the bending (inconsistency of gap N1) due to developer roll causes inhomogeneous, thereby eliminate the photosensitive drums inhomogeneous situation of toner adhesion amount in the axial direction, can not cause again the increase of complexity and the rising of manufacturing cost of manufacturing and installing.
Brief description of the drawings
By reference to the accompanying drawings, will more clearly understand above and other of the present utility model aspect, feature and other advantages according to following detailed description, wherein:
Fig. 1 is the structural drawing illustrating according to the partial configuration of the developing cell of prior art;
Fig. 2 is the partial enlarged drawing that a part for the development section 16 of Fig. 1 is shown;
Fig. 3 A and Fig. 3 B illustrate according to the front elevation of the configuration of electro-mechanical part of the present utility model and photosensitive drums and side view;
Fig. 4 is the schematic diagram illustrating according to the structure of pin electrode of the present utility model.
Embodiment
Describe various embodiments of the present utility model in detail hereinafter with reference to accompanying drawing.Note, in this instructions and accompanying drawing, the same or similar Reference numeral of parts with essentially identical function or structure represents, and omits the repeat specification to these parts.
As previously mentioned, due to toner G reacting force to developer roll 16a when the gap M by between developer roll 16a and doctor 16b, developer roll 16a bends along axis direction, make the gap N1 between developer roll 16a and photosensitive drums 10 become inconsistent along axis direction, cause thus the concentration that is provided to the toner in photosensitive drums 10 to occur inhomogeneous along axis direction.The utility model distributes by the surface potential on the axis direction that the pin electrode of a bending is provided at electro-mechanical part changes photosensitive drums, thus inhomogeneous along axis direction of the concentration of the toner that compensation causes because of the inconsistency of gap N1.
Describe in detail according to the technical solution of the utility model referring to Fig. 3 A, Fig. 3 B and Fig. 4.Fig. 3 A and Fig. 3 B illustrate according to the front elevation of the configuration of electro-mechanical part of the present utility model and photosensitive drums (main scanning direction sectional view) and side view (secondary surface sweeping direction sectional view); And Fig. 4 is the schematic diagram illustrating according to the structure of pin electrode of the present utility model.
With reference to Fig. 3 A and Fig. 3 B, comprise the electro-mechanical part housing 34 of pin electrode 32 and this pin electrode 32 of installation according to electro-mechanical part 30 of the present utility model.This electro-mechanical part 30 is arranged near photosensitive drums 10, and wherein, pin electrode 32 has curved shape along its length, as shown in Figure 4.This pin electrode 32 can be made up of metal material, also can be made up as any or multiple material of discharge material of other.Pin electrode 32 can have by each independent faller gill and is listed as the array forming, or has jagged pin array, but the utility model is not limited to this, and pin electrode 32 can have the pin of arbitrary shape and arrangement, as long as can implement corona discharge.Conventionally, the length direction of pin electrode 32 is arranged to along the axis direction of photosensitive drums 10, to make the just surface to photosensitive drums 10 of each pin of pin electrode 32, as shown in Figure 3A, but the utility model is not limited to this, those skilled in the art can arrange according to actual design demand and individual preference the position of the each pin on position and the pin electrode 32 of pin electrode 32.
Conventionally, in the time that electro-mechanical part 30 is in running order, high voltage generating unit (not shown) provides high voltage to the pin electrode 32 in electro-mechanical part 30, make to form highfield between pin electrode 32 and photosensitive drums 10, this highfield is enough to make air molecule ionization, thereby discharge electronics, the negative ion that the electronics discharging or this electronics and other atoms or molecule are combined into is adsorbed to the surface of photosensitive drums 10, to make photosensitive drums 10 charged.The described here charged principle of photosensitive drums 10 that makes is only a kind of illustrative embodiments, the utility model is not limited to this, can adopt anyly can make the charged principle of corona discharge of photosensitive drums 10, and on the surface of photosensitive drums 10, charged polarity also can be determined according to actual design demand.
Due to the curved shape of pin electrode 32, distance between the surface of pin electrode 32 and photosensitive drums 10 will change along with this curved shape, therefore, in the time of corona discharge, the distribution that is attached to photosensitive drums 10 lip-deep electric charges also changes the curved shape along with pin electrode 32 (distance between the surface of pin electrode 32 and photosensitive drums 10).Conventionally, the distance between pin electrode 32 and the surface of photosensitive drums 10 is less, and the electric field intensity between the two is larger, is attached to the lip-deep quantity of electric charge of photosensitive drums 10 also more.Be attached to the distribution of photosensitive drums 10 lip-deep electric charges if make corresponding to the distribution of the gap N1 (with reference to Fig. 2) between developer roll 16a and photosensitive drums 10, the concentration that can compensate the toner causing because of the inconsistency of gap N1 is inhomogeneous along axis direction.
Particularly, if the lip-deep electric charge of photosensitive drums 10 and toner G with opposite polarity, or toner G neutral, can transmit toner G by electrostatic adsorption between developer roll 16a and photosensitive drums 10.Now, pin electrode 32 can be designed to towards the direction bending near photosensitive drums 10, thereby owing to more approaching in the longitudinal direction the middle position of pin electrode 32, distance between pin electrode 32 and photosensitive drums 10 is less, thereby the quantity of electric charge adhering on the correspondence position of photosensitive drums 10 is larger, therefore, due to photosensitive drums 10, more to approach along axis direction the quantity of electric charge that middle position adheres to larger, so it is larger to the absorption affinity of toner G that photosensitive drums 10 more connects ectocentral position, thereby more easily toner G is sent in photosensitive drums 10, therefore, the concentration that can compensate the toner causing because of the inconsistency of gap N1 is inhomogeneous along axis direction.
But above-mentioned situation is only a kind of embodiment, the utility model is not limited to this.For example, image processing system also may be designed to make the lip-deep electric charge of photosensitive drums 10 and toner G with charge polarity identical, in this case, between developer roll 16a and photosensitive drums 10, by the electrostatic repulsion forces of utilizing the adhesion on toner G and photosensitive drums 10 surfaces to overcome toner G and photosensitive drums 10 lip-deep electric charges, toner G is sent in photosensitive drums 10.In this case, pin electrode 32 can be designed to towards the direction bending away from photosensitive drums 10, thereby owing to more approaching in the longitudinal direction the middle position of pin electrode 32, distance between pin electrode 32 and photosensitive drums 10 is larger, thereby the quantity of electric charge adhering on the correspondence position of photosensitive drums 10 is fewer, therefore, due to photosensitive drums 10, more to approach along axis direction the quantity of electric charge that middle position adheres to fewer, so it is less to the electrostatic repulsion forces of toner G that photosensitive drums 10 more connects ectocentral position, thereby the adhesion on toner G and photosensitive drums 10 surfaces more easily overcomes this electrostatic repulsion forces so that must more easily be sent in photosensitive drums 10 by toner G, therefore, the concentration that also can compensate the toner causing because of the inconsistency of gap N1 is inhomogeneous along axis direction.
But, above a kind of illustrative embodiments only described, the utility model is not limited to this.For example, described above is that the two ends of developer roll 16a on axis direction are fixed on the situation in image processing system main body, but, those skilled in the art also may be according to actual design demand or individual preference and in other positions of developer roll 16a (such as at developer roll 16a along middle position of axis direction etc.) developer roll 16a is fixed.In this case, developer roll 16a is in the time being promoted by the reacting force of toner G, may there is other forms of bending, for example, interval N1 between developer roll 16a and photosensitive drums 10 occurs that maximum position may not appear at the point midway along axis, but appears at other positions according to the concrete fixed position of developer roll 16a.In this case, the curve form of pin electrode 32 is preferably also designed to the curve form corresponding to developer roll 16a.
In addition, the relative position of developer roll 16a, doctor 16b and photosensitive drums 10 also may be designed such that developer roll 16a in the time being subject to the reacting force of toner G by towards near the direction bending of photosensitive drums, also be the value that the minimum value of the interval N1 between developer roll 16a and photosensitive drums 10 is less than predetermined design, now will cause position corresponding with the minimum value of interval N1 in photosensitive drums 10 to adhere to maximum toner G, other positions adhere to relatively less toner G.Now, pin electrode 32 can be designed to inhomogeneous along axis direction of concentration that the curve form contrary with described before embodiment compensate the toner causing because of the inconsistency of gap N1.Those skilled in the art, after having read the utility model, all can correspondingly design according to actual design demand or individual preference the curve form of pin electrode 32.
In sum, be designed to the curved shape corresponding to developer roll 16a according to pin electrode 32 of the present utility model.Toner G on polarity and the developer roll 16a of photosensitive drums 10 lip-deep electric charges with the polarity of electric charge be set, the bending direction of this pin electrode 32 depends on ultimate range or the minor increment between developer roll 16a and photosensitive drums 10.Particularly, when the lip-deep electric charge of photosensitive drums 10 and toner G with opposite polarity or when toner G neutral, if developer roll 16a is towards the direction bending away from photosensitive drums 10, be that ultimate range between developer roll 16a and photosensitive drums 10 is greater than the distance between predefined developer roll 16a and photosensitive drums 10, pin electrode 32 will be designed to towards the direction bending near photosensitive drums 10; If developer roll 16a is towards the direction bending near photosensitive drums 10, the minor increment between developer roll 16a and photosensitive drums 10 is less than predefined distance, and pin electrode 32 will be designed to towards the direction bending away from photosensitive drums 10.On the contrary, when the lip-deep electric charge of photosensitive drums 10 and toner G with charge polarity when identical, if developer roll 16a is towards the direction bending away from photosensitive drums 10, be that ultimate range between developer roll 16a and photosensitive drums 10 is greater than the distance between predefined developer roll 16a and photosensitive drums 10, pin electrode 32 will be designed to towards the direction bending away from photosensitive drums 10; If developer roll 16a is towards the direction bending near photosensitive drums 10, the minor increment between developer roll 16a and photosensitive drums 10 is less than predefined distance, and pin electrode 32 will be designed to towards the direction bending near photosensitive drums 10.
In addition, be designed to depend on ultimate range or the minor increment between developer roll 16a and photosensitive drums 10 according to the degree of crook of pin electrode 32 of the present utility model.Particularly, the degree that the ultimate range between developer roll 16a and photosensitive drums 10 or minor increment depart from preset distance is larger, and it is larger that the degree of crook of pin electrode 32 should be designed to be.Those skilled in the art, obviously can be according to actual design demand or other because usually correspondingly designing various pin electrodes 32 after having read the application, and to those skilled in the art, the design of various pin electrodes 32 will be apparent.
Should be appreciated that the above-mentioned various features of describing respectively and do not mean that to be only used for a certain embodiment in various embodiments, on the contrary, these features can mutually combine to realize the technical solution of the utility model.Those skilled in the art completely can be according to implementing concrete condition of the present utility model, individual preference etc. because of appropriately combined above-mentioned various features usually, to realize various embodiment of the present utility model.
It will be appreciated by those skilled in the art that above-mentioned various embodiment is only exemplary, does not form restriction of the present utility model.In fact,, as long as within the scope of claims or its equivalent, can carry out various amendments, combination, sub-portfolio and change according to designing requirement and other factors.
Claims (10)
1. an image processing system, is characterized in that, comprising:
Photosensitive drums, is arranged in the main body of described image processing system; And
Charged elements, is arranged near described photosensitive drums,
Wherein, described charged elements has the pin electrode of a curved shape, and the pin electrode of described curved shape can make described photosensitive drums charged.
2. image processing system according to claim 1, is characterized in that, the length direction of the pin electrode of described curved shape is arranged to the axis direction along described photosensitive drums.
3. image processing system according to claim 1, is characterized in that, also comprises:
Developer roll, is arranged on described photosensitive drums neighbouring toner is sent in described photosensitive drums,
Wherein, the curved shape of described pin electrode is corresponding to the curved shape of described developer roll.
4. image processing system according to claim 3, is characterized in that, if the ultimate range between described developer roll and described photosensitive drums is greater than preset distance, the pin electrode of described curved shape is towards the direction bending near described photosensitive drums.
5. image processing system according to claim 3, is characterized in that, if the minor increment between described developer roll and described photosensitive drums is less than preset distance, the pin electrode of described curved shape is towards the direction bending away from described photosensitive drums.
6. image processing system according to claim 3, is characterized in that, the degree of crook of the pin electrode of described curved shape depends on ultimate range or the minor increment between described developer roll and described photosensitive drums.
7. image processing system according to claim 6, is characterized in that, the degree that the ultimate range between described developer roll and described photosensitive drums or minor increment depart from preset distance is larger, and the degree of crook of the pin electrode of described curved shape is larger.
8. for a developing cell for image processing system, it is characterized in that, comprising:
Photosensitive drums, is arranged in the main body of described developing cell; And
Charged elements, is arranged near described photosensitive drums,
Wherein, described charged elements has the pin electrode of a curved shape, and the pin electrode of described curved shape can make described photosensitive drums charged.
9. developing cell according to claim 8, is characterized in that, also comprises:
Developer roll, is arranged on described photosensitive drums neighbouring toner is sent in described photosensitive drums,
Wherein, the curved shape of described pin electrode is corresponding to the curved shape of described developer roll.
10. for a charged elements for image processing system, it is characterized in that, comprising:
Pin electrode, has a curved shape and can make the photosensitive drums of described image processing system charged,
Wherein, described photosensitive drums is arranged in the main body of described image processing system, and described charged elements is arranged near described photosensitive drums.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291675.1U CN203965801U (en) | 2014-06-03 | 2014-06-03 | Charged elements, developing cell and image processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291675.1U CN203965801U (en) | 2014-06-03 | 2014-06-03 | Charged elements, developing cell and image processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965801U true CN203965801U (en) | 2014-11-26 |
Family
ID=51926361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420291675.1U Expired - Fee Related CN203965801U (en) | 2014-06-03 | 2014-06-03 | Charged elements, developing cell and image processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203965801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017078751A (en) * | 2015-10-19 | 2017-04-27 | キヤノン株式会社 | Image forming apparatus and density correction method in image forming apparatus |
-
2014
- 2014-06-03 CN CN201420291675.1U patent/CN203965801U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017078751A (en) * | 2015-10-19 | 2017-04-27 | キヤノン株式会社 | Image forming apparatus and density correction method in image forming apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2014123017A5 (en) | ||
| CN105487358A (en) | Image forming apparatus | |
| CN103676565A (en) | Image forming apparatus | |
| CN203965801U (en) | Charged elements, developing cell and image processing system | |
| JP6260476B2 (en) | Image forming apparatus | |
| CN101535902B (en) | Grounding assembly for a drum in an image forming apparatus | |
| JPH0114587B2 (en) | ||
| JP5530898B2 (en) | Image forming apparatus | |
| CN105319899B (en) | Image forming apparatus with a toner supply device | |
| CN204009378U (en) | Handle box | |
| US8275299B2 (en) | Transfer unit and image forming apparatus employing the same | |
| CN102087495B (en) | Image forming apparatus | |
| JP4256495B2 (en) | Electrophotographic equipment | |
| JP2000081803A (en) | Transfer device | |
| CN106292220B (en) | Image forming apparatus and image forming method | |
| JPH09258621A (en) | Image forming device | |
| JP4810079B2 (en) | Image forming apparatus | |
| JP2013033272A (en) | Charging device, process cartridge and image forming apparatus | |
| JP5145846B2 (en) | Charging device, process cartridge, and image forming apparatus | |
| JP2002287535A (en) | Image forming apparatus | |
| CN204101886U (en) | Can avoid conducting electricity bad photosensitive drums | |
| JP2001265107A (en) | Developing machine | |
| JP4143286B2 (en) | Image forming apparatus | |
| JP4557618B2 (en) | Roller, supply roller, development roller | |
| JPH0215287A (en) | Developing device for single-component toner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160603 |