CN102375378B - Developing roller - Google Patents
Developing roller Download PDFInfo
- Publication number
- CN102375378B CN102375378B CN 201110356816 CN201110356816A CN102375378B CN 102375378 B CN102375378 B CN 102375378B CN 201110356816 CN201110356816 CN 201110356816 CN 201110356816 A CN201110356816 A CN 201110356816A CN 102375378 B CN102375378 B CN 102375378B
- Authority
- CN
- China
- Prior art keywords
- conductive elastomer
- internal layer
- layer
- developer roll
- outer conductive
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention discloses a developing roller, which comprises a central spindle, an elastic layer and a surface layer, wherein the elastic layer is formed on the central spindle; the surface layer is formed on the elastic layer; the elastic layer comprises an inner layer conductive elastomer and an outer layer conductive elastomer; the surface layer is attached to the outer surface of the outer layer conductive elastomer; and a bonding agent layer is formed between the central spindle and the inner layer conductive elastomer. The inner layer conductive elastomer is made of a conductive elastic material with low cost while the outer layer conductive elastomer is made of a conductive rubber material which has special performance and high price, so that uniform volume conductivity stability can be ensured, surface conductivity is uniform, and the printing effect is invariable. Due to the adoption of the design, low price and stable and invariable quality are realized.
Description
Technical field
The present invention relates to a kind of developer roll for laser image forming apparatus.
Background technology
Laser printer is one of present most widely used computing machine output peripheral equipment, and it utilizes the physics, the principles of chemistry of light, electricity, heat by interaction output character or image.Seven steps such as basic process can be divided into charging, exposure, development, transfer printing, photographic fixing, the electricity that cleans, disappears.At first, photosensitive drum surface is charged equably by charging roller.Laser scanner contains the laser through ovennodulation of image information to the photosensitive drums emission, form and the electrostatic latent image for the treatment of that duplicating image is corresponding at photosensitive drum surface.Simultaneously, the developer roll rotation, carbon dust between developer roll and powder outlet cutter is charged because of spin friction, charged carbon dust is evenly distributed on developer roll because of powder outlet cutter pressure extrusion thickness again, and the charged toner that developer roll rotates to the part that contacts with photosensitive drums makes electrostatic latent image convert visual image to because the electric field force effect is transferred on photosensitive drum surface.Along with the rotation of photosensitive drums and the positive voltage effect that the recording medium such as paper back side applied through transfer roll, the electronegative carbon dust that has formed visual image at photosensitive drum surface is produced attractive force, and the visual image that is formed by carbon dust namely is transferred on the recording medium such as paper.Enter subsequently the fixing component that warm-up mill and backer roll form, during carbon powder particles fuses into the fiber of recording medium under the effect of heat and pressure, so the visual image that carbon dust forms solidifies on recording medium fully.So basic imaging action has just been completed.
In print procedure, to want to obtain high-quality printing effect, developer roll is most important.Existing developer roll exploitation requires evenly because of its resistivity, and has to select to adopt a kind of special conductive material to make development roller base.This material is expensive especially and because international starting material go up, up-trend is arranged, and the existing developer roll market price constantly descends, so designing and developing of high-quality low-cost becomes the task of top priority.
Summary of the invention
Technical matters to be solved by this invention is under the prerequisite that guarantees print quality, reduces the manufacturing cost of developer roll.
For solving the problems of the technologies described above, the present invention has adopted following technical scheme: design a kind of developer roll, comprise mandrel, be arranged at the elastic layer on described mandrel and be arranged at superficial layer on described elastic layer, described elastic layer comprises two-layer at least conductive elastomer.
Preferably, described elastic layer comprises internal layer and outer two-layer conductive elastomer altogether, and described superficial layer is attached to the outside surface of described outer conductive elastomer.Preferably, has bond layer between described mandrel and internal layer conductive elastomer.Bond layer helps mandrel and the bonding integral body that becomes of internal layer conductive elastomer, so no matter which kind of condition product is in, neither can absciss layer, thereby guarantee effective transmission of the stable required rotation of product when printing of its electric conductivity and the relative rotation of internal layer conductive elastomer and mandrel does not occur, guaranteed the validity of printing.
Preferably, the xsect outer contour shape of described internal layer conductive elastomer can be circle, ellipse, regular polygon, knuckle-tooth shape, side tooth profile or sharp-tooth shaped etc.Circle can guarantee the even of cylindrical each point electrical property; The oval grinding step that can save the shaping of internal layer conductive elastomer reduces costs; The advantage of knuckle-tooth shape, side tooth profile and sharp-tooth shaped etc. is to make the surface of contact between two layers of elastomer larger, and is engagement, is conducive to the ectonexine elastic body in the situation that effectively fit without sticker, is not easy absciss layer, and when guaranteeing to print, rotation effectively.Certainly, two layers of elastomer energy non-adhesive good bonding has consideration from formula, characteristics are must have one or more that identical sizing material is arranged in the material composition of two layers of elastomer, because there is identical sizing material to exist in situation, must there be the chemical bond interface on its composition surface, engages more firm.
Preferably, the thickness of described outer conductive elastomer is 0.5mm ~ 2.5mm.
Preferably, the hardness of described internal layer conductive elastomer is equal to or greater than the hardness of described outer conductive elastomer, and the resistance value of described internal layer conductive elastomer is less than the resistance value of described outer conductive elastomer.Outer conductive elastomer need provide certain limit and reliable and stable electric conductivity, and enough mechanically deform abilities also need be arranged, and therefore the hardness of outer conductive elastomer is low can guarantee its distortion, thereby guarantees printing effect.
Preferably, in the middle of described elastic layer, the volume percent content of described internal layer conductive elastomer is 51% ~ 89%, and the volume percent content of described outer conductive elastomer is 11% ~ 49%, and such ratio can effectively reduce manufacture difficulty and material cost.
The making composition of raw materials of described internal layer conductive elastomer 2 following (weight portion): nitrile rubber 30-90 part; Butadiene rubber 5-55 part; Chlorohydrin rubber 5-30 part; Strong conductive carbon black 5-20 part; Common carbon black 20-50 part; Calcium carbonate 5-30 part; Plastifier 5-30 part; Vulcanizing agent 0.5-2.5 part; TM monex TM0.5-1.5 part; Accelerant CZ 0.8-2 part; Zinc paste 2-7 part; Stearic acid 1-3 part; Anti-aging agent RD 1-2 part.Such formula can be guaranteed internal layer and outer field bonding effect; Strong conductive carbon black is used for guaranteeing conductive effect; Adding a certain amount of calcium carbonate is for considering that it can reduce costs; Plastifier can suitably be regulated hardness; Vulcanizing agent is general sulphur; Promoter has two kinds to be for the auxiliary agent that promotes sulfuration; Zinc paste and stearic acid interworking can activate cure efficiency, improve cross-linking density, improve properties of rubber; Aging resister prevents process oxidative degradation and follow-up anti-old effect.
The making composition of raw materials of described outer conductive elastomer 3 following (weight portion): nitrile rubber 5-50 part; Chlorohydrin rubber 30-95 part; Weakly conducting carbon black 3-10 part; Common carbon black 15-70 part; Calcium carbonate 10-40 part; Paraffin 1-5 part; The liquid butyronitrile 3-20 of softening agent part; Vulcanizing agent 0.5-1.5 part; TM monex TM 0.3-1.5 part; Accelerant CZ 0.5-2.0 part; Zinc paste 2-7 part; Stearic acid 1-5 part; Anti-aging agent RD 1-2 part.On show that butadiene-acrylonitrile rubber can provide material certain anti-wear performance, chloropharin glue has good high and low temperature resistance and ozone resistance, and sizing material itself has certain ionic conducting property, this conduction homogeneity to material is favourable.Outer electric conductivity is the semiconductive material that requirement has certain conduction, therefore can only be at a certain amount of interpolation weakly conducting carbon black.The interpolation of carbon black can improve the intensity of sizing material, and calcium carbonate is to add as filler, can reduce costs.Above-mentioned other composition explanations are same as above.
Developer roll of the present invention is owing to having comprised two-layer at least conductive elastomer, wherein, the internal layer conductive elastomer can adopt the comparatively cheap conductive elastomer of cost, outer conductive elastomer is to adopt to have conductive rubber material property, that price is more expensive, can guarantee that uniform volume conduction is stable, surface conductivity is even, remains unchanged thereby protect printing effect.This design can take into account low price simultaneously and stay in grade is constant.
Description of drawings
Fig. 1 is the stereographic map of the developer roll of the embodiment of the present invention one.
Fig. 2 is the plan view of developer roll shown in Figure 1.
Fig. 3 is the A-A cut-open view of Fig. 2.
Fig. 4 is the cut-open view of the developer roll of the embodiment of the present invention two.
Fig. 5 is the cut-open view of the developer roll of the embodiment of the present invention three.
Fig. 6 is the cut-open view of the developer roll of the embodiment of the present invention four.
Fig. 7 is the cut-open view of the developer roll of the embodiment of the present invention five.
Fig. 8 is the cut-open view of the developer roll of the embodiment of the present invention six.
Fig. 9 is the making composition of raw materials list of the internal layer conductive elastomer of the embodiment of the present invention one to embodiment six.
Figure 10 is the making composition of raw materials list of the outer conductive elastomer of the embodiment of the present invention one to embodiment six.
Embodiment
Embodiment one
Fig. 1 is to Figure 3 shows that according to a kind of developer roll of the present invention, comprise the mandrel 1 of being made by conducting metal and be stacked and placed on successively internal layer conductive elastomer 2, the outer conductive elastomer 3 on mandrel 1 and be attached to superficial layer 4 on outer conductive elastomer 3, having bond layer 5 between internal layer conductive elastomer 2 and mandrel 2.
Glue is prepared burden (unit is weight portion), refined to the formula of the embodiment one that internal layer conductive elastomer 2 records according to Fig. 9 when making, and refining glue can be selected mill or Banbury mixer, and the present embodiment adopts mill.The sizing material that mixes was placed on the mould die forming in standing one day, 160 ℃ of forming temperatures (mold temperature), and time 5-30 minute, the present embodiment was 8 minutes.The xsect outer contour shape of internal layer conductive elastomer 2 can be conducive to for circle, ellipse, regular polygon, knuckle-tooth shape, side tooth profile or sharp-tooth shaped etc. are various the sturdy shape design of ectonexine conductive elastomer engagement, and the present embodiment adopts circular.
Glue is prepared burden (unit is weight portion), refined to the formula of the embodiment one that outer conductive elastomer 3 records according to Figure 10 when making, standing one day of the sizing material that mixes, internal layer conductive elastomer 2 semi-manufacture are placed in extruder T shape or the shaping of Y-head compound extruded, and forming mode can also adopt die forming in addition.And then be placed in sulfurizing pot vulcanization, and 160 ℃ of vulcanizing tank temperature, tank internal pressure 0.2MPa-0.8MPa adds 10 minutes-30 minutes sulphur time, and the condition that the present embodiment adopts is vulcanizing tank pressure 0.5MPa, adds 15 minutes sulphur time; And then be placed in the baking box secondary and add sulphur, 150 ℃ of temperature, 4 hours time, after secondary adds sulphur, the limit end-grain cutting of taking-up product is disconnected, then be ground to specified size, grinding can directly advance to grind with wide emery wheel, also can adopt about narrow emery wheel to advance to grind, and this implements to adopt narrow abrasion wheel grinding, abrasive product surfaceness Ra commonly used characterizes, its value is preferably between 0.7 μ-1.5 μ between 0.5 μ-2 μ, and this enforcement surfaceness is 0.9 μ.
Last operation is that external coating is processed, and external coating can adopt dip-coating mode or spraying method, this time implements to adopt spraying method to process; Coating is semiconducting coating, and the resistance of coating value is 10
6Ω-10
9Ω, coating thickness are 2 μ-50 μ, and the coating thickness of the present embodiment is 6 μ, obtain product one.
In the middle of the elastic layer of the present embodiment, the thickness of outer conductive elastomer 3 is 2.5mm, and the volume percent content of internal layer conductive elastomer 2 is 51%, and the volume percent content of outer conductive elastomer 3 is 49%.The hardness number of internal layer conductive elastomer 2 is 64, and resistance value is 0.001-0.01 M Ω; The hardness number of outer conductive elastomer 3 is 48, and resistance value is 0.2 M Ω.
Implement two
Select the weight ratio of the enforcement two in Fig. 9 and formula table shown in Figure 10 to coordinate, by implementing a described method refining glue, shaping, the half-finished xsect outer contour shape of the internal layer conductive elastomer 2 of this enforcement is selected ellipse, transverse is than the little 1-5mm of product external diameter, minor axis is than the little 1-5mm of product external diameter, axial ratio is between 1-1.3, is preferably 1.05.The gained semi-manufacture are extruded combined shaping as described in implementing one, then insert sulfurizing pot vulcanization, grind, and outer conductive elastomer 3 thickness of longitudinal end are 1.2mm, and surface coating grinds corase grind degree and coating thickness with implementing one, obtains product two.
In the middle of the elastic layer of the present embodiment, the volume percent content of internal layer conductive elastomer 2 is 72%, and the volume percent content of outer conductive elastomer 3 is 28%.The hardness number of internal layer conductive elastomer 2 is 62, and resistance value is 0.001-0.01 M Ω; The hardness number of outer conductive elastomer 3 is 50, and resistance value is 0.22 M Ω.
Implement three
Select the weight ratio of the enforcement three in Fig. 9 and formula table shown in Figure 10 to coordinate, make product three by implementing a described method, the half-finished xsect outer contour shape of the internal layer conductive elastomer 2 of the present embodiment is selected sharp-tooth shaped, and the thickness of outer conductive elastomer 3 is 0.5 mm.In the middle of the elastic layer of the present embodiment, the volume percent content of internal layer conductive elastomer 2 is about 83%, and the volume percent content of outer conductive elastomer 3 is about 17%.The hardness number of internal layer conductive elastomer 2 is 62, and resistance value is 0.001-0.01 M Ω; The hardness number of outer conductive elastomer 3 is 51, and resistance value is 0.25 M Ω.
Implement four
Select the weight ratio of the enforcement four in Fig. 9 and formula table shown in Figure 10 to coordinate, make product four by implementing a described method, the half-finished xsect outer contour shape of the internal layer conductive elastomer 2 of the present embodiment is selected knuckle-tooth shape, and the thickness of outer conductive elastomer 3 is 1.0mm.In the middle of the elastic layer of the present embodiment, the volume percent content of internal layer conductive elastomer 2 is 76%, and the volume percent content of outer conductive elastomer 3 is 24%.The hardness number of internal layer conductive elastomer 2 is 63, and resistance value is 0.001-0.01 M Ω; The hardness number of outer conductive elastomer 3 is 49, and resistance value is 0.1 M Ω.
Implement five
Select the weight ratio of the enforcement five in Fig. 9 and formula table shown in Figure 10 to coordinate, make product five by implementing a described method, the half-finished xsect outer contour shape of the internal layer conductive elastomer 2 of the present embodiment is selected side tooth profile, and the thickness of outer conductive elastomer 3 is 1.8mm.In the middle of the elastic layer of the present embodiment, the volume percent content of internal layer conductive elastomer 2 is 54%, and the volume percent content of outer conductive elastomer 3 is 46%.The hardness number of internal layer conductive elastomer 2 is 61, and resistance value is 0.001-0.01 M Ω; The hardness number of outer conductive elastomer 3 is 51, and resistance value is 0.18 M Ω.
Implement six
Select the weight ratio of the enforcement six in Fig. 9 and formula table shown in Figure 10 to coordinate, make product six by implementing a described method, the half-finished xsect outer contour shape of the internal layer conductive elastomer 2 of the present embodiment is selected regular polygon, and the thickness of outer conductive elastomer 3 is 0.8 mm.In the middle of the elastic layer of the present embodiment, the volume percent content of internal layer conductive elastomer 2 is 74%, and the volume percent content of outer conductive elastomer 3 is 26%.The hardness number of internal layer conductive elastomer 2 is 61, and resistance value is 0.001-0.01 M Ω; The hardness number of outer conductive elastomer 3 is 52, and resistance value is 0.21 M Ω.
Above-described is only the preferred embodiment of the present invention, should be understood that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, for example, described elastic layer is not limited to two-layer, also can comprise internal layer, middle level and skin totally three layers of conductive elastomer, even can also be more multi-layered.The xsect outer contour shape of described internal layer conductive elastomer also is not limited to the shape that above-described embodiment is enumerated; The thickness of described outer conductive elastomer also is not limited to 0.5mm ~ 2.5mm.
Claims (7)
1. developer roll, comprise mandrel, be arranged at the elastic layer on described mandrel and be arranged at superficial layer on described elastic layer, it is characterized in that: described elastic layer comprises internal layer conductive elastomer and the outer conductive elastomer of being made by different materials, and described superficial layer is attached to the outside surface of described outer conductive elastomer; Wherein
The making composition of raw materials of described internal layer conductive elastomer following (weight portion): nitrile rubber 30-90 part; Butadiene rubber 5-55 part; Chlorohydrin rubber 5-30 part; Strong conductive carbon black 5-20 part; Common carbon black 20-50 part; Calcium carbonate 5-30 part; Plastifier 5-30 part; Vulcanizing agent 0.5-2.5 part; TM monex TM 0.5-1.5 part; Accelerant CZ 0.8-2 part; Zinc paste 2-7 part; Stearic acid 1-3 part; Anti-aging agent RD 1-2 part;
The making composition of raw materials of described outer conductive elastomer following (weight portion): nitrile rubber 5-50 part; Chlorohydrin rubber 30-95 part; Weakly conducting carbon black 3-10 part; Common carbon black 15-70 part; Calcium carbonate 10-40 part; Paraffin 1-5 part; The liquid butyronitrile 3-20 of softening agent part; Vulcanizing agent 0.5-1.5 part; TM monex TM 0.3-1.5 part; Accelerant CZ 0.5-2.0 part; Zinc paste 2-7 part; Stearic acid 1-5 part; Anti-aging agent RD 1-2 part.
2. developer roll according to claim 1, is characterized in that: have bond layer between described mandrel and internal layer conductive elastomer.
3. developer roll according to claim 1 is characterized in that: the xsect outer contour shape of described internal layer conductive elastomer is circle, ellipse, regular polygon, knuckle-tooth shape, side tooth profile or sharp-tooth shaped.
4. developer roll according to claim 1, it is characterized in that: the thickness of described outer conductive elastomer is 0.5mm ~ 2.5mm.
5. developer roll according to claim 1, it is characterized in that: the hardness of described internal layer conductive elastomer is equal to or greater than the hardness of described outer conductive elastomer, and the resistance value of described internal layer conductive elastomer is less than the resistance value of described outer conductive elastomer.
6. developer roll according to claim 1, it is characterized in that: in the middle of described elastic layer, the volume percent content of described internal layer conductive elastomer is 51% ~ 89%, and the volume percent content of described outer conductive elastomer is 11% ~ 49%.
7. developer roll according to claim 1, it is characterized in that: described elastic layer also comprises the middle level conductive elastomer between described internal layer conductive elastomer and described outer conductive elastomer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110356816 CN102375378B (en) | 2011-11-11 | 2011-11-11 | Developing roller |
| PCT/CN2012/084218 WO2013067933A1 (en) | 2011-11-11 | 2012-11-07 | Developing roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110356816 CN102375378B (en) | 2011-11-11 | 2011-11-11 | Developing roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102375378A CN102375378A (en) | 2012-03-14 |
| CN102375378B true CN102375378B (en) | 2013-05-15 |
Family
ID=45794162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110356816 Active CN102375378B (en) | 2011-11-11 | 2011-11-11 | Developing roller |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102375378B (en) |
| WO (1) | WO2013067933A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375378B (en) * | 2011-11-11 | 2013-05-15 | 珠海天威飞马打印耗材有限公司 | Developing roller |
| CN104930065B (en) * | 2015-04-29 | 2018-11-23 | 河北泰铭能源集团有限公司 | The small stress assembling structure of two-way positioning and its assembly method |
| JPWO2017221907A1 (en) * | 2016-06-20 | 2019-04-11 | 株式会社ブリヂストン | Conductive roller |
| CN106094477B (en) * | 2016-08-03 | 2020-04-14 | 北京绿色快车国际橡塑制品有限公司 | Color developing roller and preparation method thereof |
| CN111158227A (en) * | 2020-02-17 | 2020-05-15 | 平田橡塑五金制品（深圳）有限公司 | Transfer roller with stable resistance value and preparation method thereof |
| CN113568291B (en) * | 2021-08-11 | 2023-03-07 | 珠海市菲尼科科技有限公司 | Developing roller for electronic imaging device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013291A (en) * | 2006-02-02 | 2007-08-08 | 株式会社普利司通 | Conductive elastic roller and image forming apparatus comprising the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3826125B2 (en) * | 2003-10-14 | 2006-09-27 | キヤノン株式会社 | Developing roller, electrophotographic process cartridge, and electrophotographic image forming apparatus |
| CN100461019C (en) * | 2005-03-08 | 2009-02-11 | 株式会社普利司通 | Conductive roller and image forming device using same |
| JP4887902B2 (en) * | 2006-05-18 | 2012-02-29 | コニカミノルタビジネステクノロジーズ株式会社 | Developing roller and image forming method using the developing roller |
| CN101909882B (en) * | 2007-11-14 | 2014-06-25 | 陶氏环球技术有限责任公司 | Articles and methods of making the same |
| CN101976023A (en) * | 2010-08-23 | 2011-02-16 | 吴声立 | Dense conductive rubber charging roller and production method thereof |
| CN102375378B (en) * | 2011-11-11 | 2013-05-15 | 珠海天威飞马打印耗材有限公司 | Developing roller |
-
2011
- 2011-11-11 CN CN 201110356816 patent/CN102375378B/en active Active
-
2012
- 2012-11-07 WO PCT/CN2012/084218 patent/WO2013067933A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013291A (en) * | 2006-02-02 | 2007-08-08 | 株式会社普利司通 | Conductive elastic roller and image forming apparatus comprising the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102375378A (en) | 2012-03-14 |
| WO2013067933A1 (en) | 2013-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102375378B (en) | Developing roller | |
| CN102645866B (en) | Charging unit, charging device, handle box and image forming apparatus | |
| KR20090010184A (en) | Method for producing regenerated elastic roller, regenerated elastic roller, electronic photography process cartridge, and electronic photography image forming apparatus | |
| CN102339000B (en) | Semiconductive roller, toner transport roller and electrophotographic apparatus | |
| CN104067179B (en) | Electrophotography roller and production method thereof | |
| JP4354189B2 (en) | Developing roll | |
| CN102455632B (en) | Manufacturing method of semi-conductive roller | |
| KR102041673B1 (en) | Developing apparatus, process cartridge and electrophotographic image forming apparatus | |
| CN105017579A (en) | Semiconductive roller and production method therefor | |
| US6918866B2 (en) | Conductive roll | |
| CN1837973A (en) | Conductive roller and image forming device using same | |
| JP5471085B2 (en) | Charging member, charging device, process cartridge, and image forming apparatus | |
| JP5072222B2 (en) | Developing roll production method and developing roll obtained thereby | |
| JP2002339949A (en) | Composite semiconductive silicone rubber roll | |
| JP2005300752A (en) | Developing roller, electrophotographic process cartridge and electrophotographic image forming apparatus | |
| JP2649161B2 (en) | Manufacturing method of conductive roll | |
| CN201569852U (en) | Compatible arc and linear charging roller | |
| JP2008176029A (en) | Resin core of elastic roller, electrophotograph process cartridge, and electrophotographic equipment | |
| JPH10293440A (en) | Electrifying roller member and its production | |
| JPH11202597A (en) | Electrostatic charge blade, production of electrostatic charge blade, electrostatic charge device and image forming method | |
| JP5836734B2 (en) | Conductive member and manufacturing method thereof | |
| JP5176264B2 (en) | Electrophotographic charging member and electrophotographic image forming apparatus using the same | |
| JP5377024B2 (en) | Method for manufacturing charging member | |
| JP2007316514A (en) | Conductive rubber roller | |
| JP2008033249A (en) | Roller for liquid development electrophotographic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |