CN102203440B - Electrically conductive roller - Google Patents
Electrically conductive roller Download PDFInfo
- Publication number
- CN102203440B CN102203440B CN200980143616.1A CN200980143616A CN102203440B CN 102203440 B CN102203440 B CN 102203440B CN 200980143616 A CN200980143616 A CN 200980143616A CN 102203440 B CN102203440 B CN 102203440B
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- Prior art keywords
- roller
- mentioned
- axial direction
- root
- bearing support
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- Expired - Fee Related
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Classifications
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- 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
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
- G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
- G03G15/0233—Structure, details of the charging member, e.g. chemical composition, surface properties
-
- 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
- G03G15/0808—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 developer supplying means, e.g. structure of developer supply roller
-
- 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
-
- 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
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
- G03G15/1685—Structure, details of the transfer member, e.g. chemical composition
-
- 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
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electrophotography Configuration And Component (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Dry Development In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
Abstract
An electrically conductive roller, wherein the strength of the root of a shaft is increased to prevent the shaft from breaking at the root. An electrically conductive roller (10) is provided with a shaft member (3) provided to an end of a circular tube-like base (4), and the shaft member (3) is provided with a flange section (1) and a shaft section (2) which is extended in the direction of the axis of the roller. A bearing support section (1a) is formed on the outer peripheral section at an outer end, in the direction of the axis of the roller, of the flange section (1). The root (6) of the shaft section (2) is formed at a position shifted inward from an end surface of the bearing support section (1a) in the direction of the axis of the roller. A thickened wall section (1b) is formed at the root (6).
Description
Technical field
The present invention relates to a kind of conductive rollers (following, also referred to as roller), specifically, relate to a kind of intensity that can improve the root of axle, prevent the conductive rollers that the root of axle fractures.
Background technique
Usually, use at duplicating machine, printer and facsimile apparatus etc. in the image forming apparatus of electrofax mode, in each operation forming image, use transfer-roller, developer roll, toner supplying roller, charged roller, clearer roller, intermediate transfer rollers and band drive roller etc. to have the roller of electric conductivity.
As such roller, such as, Patent Document 1 discloses a kind of cylindric roller, this cylindric roller is formed as follows, that is, by carrying out bending respectively to multiple sheet metal, sheet metal is made to bend to cylindrical shape, at edge, the both sides finished edge of cylindrical metal plate, utilize groove welding to fetch and weld between the both side edges of each sheet metal, thus define this cylindric roller.
In addition, in patent documentation 2 and patent documentation 3, disclose conductive rollers as described below, namely, this conductive rollers forms the elasitic layer of electric conductivity on the outer circumferential face of running shaft (shaft) component, this elasitic layer is formed the resin layer of electric conductivity, and rotating shaft component is made up of resinous solid cylinder and the axle portion be respectively formed on these cylindrical two ends.
In addition, be known to the conductive rollers 30 of the structure being provided with elasitic layer 35 as illustrated in fig. 7 on the outer circumferential face of cylindrical substrate 34, this conductive rollers 30 adopts the following two kinds structure according to purposes, namely, the flange 31 making to be formed with axle 32 and the two ends of the metal tubulation outer circumferential face being incorporated in them that matches forms elasitic layer 35, or, the outer circumferential face of the running shafts such as axle arranges cylindrical substrate main body and forms elasitic layer 35 at the outer circumferential face of cylindrical substrate main body.
Patent documentation 1: Japanese Patent Publication 7-54198 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2006-251004 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2006-285209 publication
the problem that invention will solve
But, following problems is there is in the conductive rollers in the past recorded in patent documentation 1 ~ 3 grade, namely, as shown in Figure 8, root due to the axle such as axle journal and the joining portion of closing of being coupling of the root 36 of axle 32 or axle is formed as the shape at about right angle, therefore when the intensity specified, stress concentrates on the root of axle and makes the root of axle become the starting point of destruction, and result, the root of axle fractures.In addition, although can consider by making the root of axle solves the above-mentioned problem fractureed with R (fillet), but, due to the restriction of the bearing support 31a block bearing part 37 of lip part useful on the root of axle, the root of axle therefore can not be made with R.
Summary of the invention
Therefore, the object of this invention is to provide a kind of can solving the problem and improve the intensity of the root of axle, prevent the conductive rollers fractureed of the root of axle.
for the scheme of dealing with problems
The present inventor is in order to solve above-mentioned problem, through wholwe-hearted investigation, found that the position of the root by limiting lip part and between centers and form at the outer circumferential side of this root the intensity that the root of axle can be improved in thickening part, preventing the root of axle from fractureing, be accomplished the present invention.
That is, conductive rollers of the present invention is assembled with shaft component in the end of cylindrical substrate, and this shaft component has lip part and axle portion extended on the axial direction of roller, it is characterized in that,
The peripheral part of the end outside the axial direction of the roller rest of above-mentioned lip part is formed with bearing support,
The root of above-mentioned axle is formed in the position be biased inside the axial direction of roller for benchmark with the end face of above-mentioned bearing support,
Above-mentioned root is formed with thickening part.
In addition, preferred thick by the thickness of end face side of above-mentioned bearing support by the Thickness Ratio inside the axial direction of above-mentioned roller along in the sectional shape on the axial direction of roller of above-mentioned thickening part in conductive rollers of the present invention.
In addition, preferably in conductive rollers of the present invention, the wall thickness in the sectional shape of the axial direction along roller of above-mentioned thickening part is thickening with the shape with radius of curvature R inside the axial direction of above-mentioned roller from the end face side of above-mentioned bearing support, the unit of radius of curvature R is mm, and being more preferably above-mentioned radius of curvature R is 0.2 ~ 2.0mm.
In addition, preferably in conductive rollers of the present invention, the wall thickness in the sectional shape of the axial direction along roller of above-mentioned thickening part is from the end face side of above-mentioned bearing support inside the axial direction of above-mentioned roller, thickening with the straight line shape with inclination.
In addition, preferably in conductive rollers of the present invention, the wall thickness in the sectional shape of the axial direction along roller of above-mentioned thickening part is from the end face side of above-mentioned bearing support inside the axial direction of above-mentioned roller, thickening with the curve-like bloated to the Vertical direction vertical with roll axis.
In addition, preferred conductive rollers of the present invention, with the position of the end face of above-mentioned bearing support for benchmark biased 0.2 ~ 2.0mm inside the axial direction of roller, has above-mentioned thickening part.
the effect of invention
According to the present invention, then can provide a kind of intensity, the conductive rollers that prevents the root of axle from fractureing that can improve the root of axle.
Accompanying drawing explanation
Fig. 1 is the figure of an example of the conductive rollers representing the preferred embodiment of the present invention.
Fig. 2 is the figure of an example of the end of the conductive rollers representing the preferred embodiment of the present invention.
Fig. 3 is the figure of the example represented with bearing support block bearing part.
Fig. 4 is the enlarged view of an example of the sectional shape representing thickening part.
Fig. 5 is the figure of another example of the end of the conductive rollers representing the preferred embodiment of the present invention.
Fig. 6 is the figure of the shape of the end of the conductive rollers represented in embodiment.
Fig. 7 is the figure of the conductive rollers represented in the past.
Fig. 8 is the figure of the end of the conductive rollers represented in the past.
Embodiment
Below, the preferred implementation that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the figure of an example of the conductive rollers representing the preferred embodiment of the present invention.Conductive rollers 10 of the present invention is assembled with shaft component 3 on the end of cylindrical substrate 4, and this shaft component 3 has lip part 1 and axle portion 2 extended on the axial direction of roller.In addition, the outer circumferential face of cylindrical substrate 4 has elasitic layer 5.
Fig. 2 is the figure of an example of the end of the conductive rollers representing the preferred embodiment of the present invention.The peripheral part of the end outside the axial direction of the roller rest of lip part 1 is formed with bearing support 1a, and, the root 6 in axle portion 2 is formed in the position be biased inside the axial direction of roller for benchmark with the end face of bearing support 1a, and this root 6 is formed with thickening part 1b.In the present invention, owing to being formed with thickening part 1b, concentrate on the root 6 of axle therefore, it is possible to relax stress.
Fig. 3 is the figure of an example of the state represented with bearing support block bearing part.Thickening part 1b is formed in the position be biased inside the axial direction of roller for benchmark with the end face of bearing support 1a, therefore, even if be formed with thickening part 1b, also can use the bearing support 1a block bearing part 7 of lip part 1.
In the present invention, as the shape of thickening part 1b, as long as the thickness of the outer circumferential face side of root 6 can be thickeied and obtain expected effect of the present invention, special restriction is not had to the shape of thickening part 1b, preferably makes the wall ratio inside the axial direction along the roller rest in the sectional shape on the axial direction of roller of thickening part 1b thick by the wall thickness of the end face side of bearing support.By the wall thickness inside the axial direction that thickeies roller, thus more can relax stress and concentrate on the root 6 of axle.
Fig. 4 is the enlarged view of an example of the shape representing thickening part.In the diagram, arrow represents from the end face side of bearing support 1a towards the direction inside the axial direction of roller.In conductive rollers of the present invention, preferably the wall thickness in the sectional shape of the axial direction along roller of this thickening part 1b is thickening with the shape with radius of curvature R (mm) inside the axial direction of roller from the end face side of bearing support 1a as Suo Shi (a) of Fig. 4.By arranging R shape (rounded shapes, lower with) on inside the axial direction of the roller of thickening part 1b, thus stress can be relaxed concentrate on root 6.
In addition, in the present invention, preferred curvature radius R (mm) is 0.2 ~ 2.0mm, and being more preferably radius of curvature R (mm) is 0.5 ~ 1.2mm.By making radius of curvature R be in described scope, easily can be shaped and obtaining expected effect of the present invention.
Fig. 5 is the figure of another example of the end of the conductive rollers representing the preferred embodiment of the present invention.In the present invention, as long as there is thickening part 1b by arranging R shape etc. on inside the axial direction of roller, just expected effect of the present invention can be obtained, therefore without particular limitation of the shape of other part.
In addition, in conductive rollers of the present invention, also preferably the wall thickness in the sectional shape of the axial direction along roller of thickening part 1b as Suo Shi (b) of Fig. 4 from the end face side of bearing support 1a inside the axial direction of roller, thickening with the straight line shape with inclination.In this case, thickening part 1b is thickening inside the axial direction of roller, therefore also can relax stress and concentrate on root 6.
In addition, in conductive rollers of the present invention, also preferably the wall thickness in the sectional shape of the axial direction along roller of this thickening part 1b as Suo Shi Fig. 4 (c) from the end face side of bearing support 1a inside the axial direction of roller, thickening with the curve-like bloated to the Vertical direction vertical with roll axis.In this case, become thicker on the whole because thickening part 1b bloats to the direction vertical with roll shaft, concentrate on root 6 therefore, it is possible to relax stress.
In addition, conductive rollers of the present invention preferably having thickening part 1b with the end face of bearing support 1a for the position of benchmark biased 0.2 ~ 2.0mm inside the axial direction of roller, being more preferably at the position being biased 0.5 ~ 1.2mm inside the axial direction of roller and having thickening part 1b.By making Offset be in described scope, thus the thickening part 1b that can be shaped more easily.
In the present invention, metal tubulation can be used as the main part of cylindrical substrate 4.As the material of described metal tubulation, as long as be made up of the metallic material with good electric conductivity, especially the material of described metal tubulation is not limited, such as, can use iron, stainless steel, aluminium or comprise the alloy etc. of these metals.Under the prerequisite of proof strength, due to light-weighted requirement, preferably the wall thickness of this metal tubulation is thinner, and such as, the wall thickness of this metal tubulation is 0.3 ~ 2mm.
In addition, in the present invention, as the material in lip part 1 and axle portion 2, the material arbitrarily such as various metallic material, resin material also can be used according to the purposes etc. of roller, and from the viewpoint such as easiness of processing when manufacturing, preferably form lip part 1 and axle portion 2 by resin material.
As the resin material in lip part 1 and axle portion 2, specifically, when engineering plastics, such as polyoxymethylene can be enumerated, polyamide resin (such as polyamide 6, polyamide 66, polyamide 12, polyamide 46, polyamide 610, polyamide 612, polyamide 11, polyamide MXD6 (polyamide obtained by M-phenylenediamine and adipic acid) etc.), polyoxymethylene, polybutylene-terephthalate, PPO＝ polyphenylene oxide (polyphenylene oxide), PPO＝ polyphenylene oxide (polyphenylene ether), polyphenylene sulfide, polyether sulfone, polycarbonate (PC), polyimide, polyamidoimide, Polyetherimide, polysulfones, polyether-ether-ketone, PETG, polyarylate, liquid-crystalline polymer, teflon etc.In addition, as resins for universal use, polypropylene, acrylonitrile-butadiene-styrene resin (ABS), polystyrene, polyethylene etc. are enumerated.In addition, also melamine resin, phenolic resin, organic siliconresin etc. can be used.These materials can be used alone one, also can be used in combination.
In addition, preferred engineering plastics in above-mentioned, particularly, polyoxymethylene, polyamide resin, polybutylene-terephthalate, PPO＝ polyphenylene oxide (polyphenylene ether), polyphenylene sulfide, polycarbonate (PC) etc. are more preferably from for the excellent and viewpoint of mechanical strength of thermoplasticity and moldability.Especially desirably, polyamide 66, polyamide MXD6, polyamide 612, polybutylene-terephthalate or their hybrid resin.In addition, also it doesn't matter to use thermosetting resin, if but consider recycling, then preferably use thermoplastic resin.
As the conducting agent making lip part 1 and axle portion 2 have electric conductivity, as long as the material that can disperse equably in resin material, then can use various material, but preferably use the powdered conductive agent such as the metal oxide powder such as metallic dust, tin oxide, titanium oxide, zine oxide, conductive glass powder of hydrocarbon black powder, powdered graphite, carbon fiber powder, aluminium, copper, nickel etc.These conducting agents can be used alone one, also can combinationally use two or more.As long as all right using the allotment amount can selecting this conducting agent according to the purposes of the conductive rollers as object, situation and the amount obtaining suitable resistance value, have no particular limits, usually preferably the mass ratio of conducting agent and material monolithic is 5 ~ 40%, and particularly preferably the mass ratio of conducting agent and material monolithic is 5 ~ 20%.
In addition, in the resin material in lip part 1 and axle portion 2, various electric conductivity or dielectric fibrous material, whisker and ferrite etc. can be coordinated to strengthen, to increase for the purpose of component etc. as required.Such as can enumerate the fiber such as carbon fiber, glass fibre as fibrous material, in addition, can the inorganic crystal whiskers such as potassium titanate be enumerated as whisker.These materials can be used alone wherein a kind of, also can combinationally use two or more.Can according to the fibrous material used, the length of whisker and diameter, allotment amount as these materials selected rightly such as the kind of the resin material of main body, the target strength of roller, but preferably the mass ratio of these materials and material monolithic is 5 ~ 70% usually, and particularly preferably the mass ratio of these materials and material monolithic is 10 ~ 20%.
The material of the elasitic layer 5 be formed on the outer circumferential face of above-mentioned cylindrical substrate 4 is not limited especially, such as, preferably can use ultraviolet curable resin or electron ray curing resin.Specifically, as described ultraviolet curable resin or electron ray curing resin, such as can enumerate polyester resin, polyether resin, fluororesin, epoxy resin, amino resin, polyamide resin, acrylic resin, acrylated polyurethane resin, polyurethane resin, alkyd resin, phenolic resin, melamine resin, urea resin, organic siliconresin and polyvinyl butyral resin etc., these resins can use a kind of or used in combination two or more.In addition, also can be used in these resins and imported specific functional group and the modified resin produced.
In above-mentioned material, particularly preferably comprise (methyl) acrylate based resin composition of (methyl) acrylate oligomer.Such as, polyurethane series (methyl) acrylate oligomer, epoxy (methyl) acrylate oligomer, ether system (methyl) acrylate oligomer, ester system (methyl) acrylate oligomer, polycarbonate-based (methyl) acrylate oligomer etc. can be enumerated as such (methyl) acrylate oligomer, in addition, the acrylate oligomer etc. of fluorine system, silicon system can be enumerated.
embodiment
Embodiment is below used to illustrate in greater detail the present invention.
(embodiment 1, embodiment 2 and comparative example 1)
As shown in Figure 1, by being coated with elasitic layer formation coating with chill coating machine on the outer circumferential face of cylindrical substrate 4, thus form the elasitic layer 5 of thickness 7mm, obtain conductive rollers 10, this cylindrical substrate 4 is by metal pipe fitting (material: aluminium A6063, length: 230mm, thickness: 0.7mm, external diameter Φ: 18mm) (material: POM (preciously manages plastics (strain) and makes with the lip part 1 with axle portion 2 at two ends, EB-10), wall thickness 1.2mm) match and make.
As elasitic layer formation coating, use UV cured resin raw material, this UV cured resin raw material is obtained by following manner, namely, will by polyurethane (meta) polyacrylate oligomer UV3000B (Japanese synthetic chemical industry (strain) system, sense radix: 2, molecular weight: 18000) 65 mass parts, (meta) acrylate monomer L-A ((methyl) acrylate monomer, common prosperity society chemistry (strain) makes, sense radix: 1, Tg:-3 DEG C) 25 mass parts, A-SA (β-acryloxy hydroxyl ethanol succinate, Xin Zhong village chemistry (strain) makes, sense radix: 1, Tg:-10 DEG C) 10 mass parts, the mixture that Photoepolymerizationinitiater initiater IRGACURE184 (chibaspecialitychemical (strain) system) 0.5 mass parts and conducting agent MP-100 (clear island chemical industry (strain) system) are formed, stirrer is utilized to be uniformly mixed 1 hour with the speed of 60 revs/min under the fluid temperature of 70 DEG C, obtain this UV cured resin raw material after filtering.Elasitic layer formation coating while implement after point (spot) UV irradiation is cured to the degree that can keep shape, is 700mW/cm by rotating the UV exposure intensity accepting for 5 seconds by being coated with further in a nitrogen environment
2uV irradiate, thus make elasitic layer formation paint solidification, form elasitic layer 5.
Fig. 6 is the figure of the shape of the end representing conductive rollers.In figure 6, the diameter A in axle portion 2
1for 7.5mm, the internal diameter A of the end face of bearing support 1a
2for 12.3mm, thickening part 6 is being benchmark with the end face of bearing support to the Offset B inside the axial direction of roller
1for 1.2mm.In addition, the radius of curvature R (mm) in thickening part 6 is set according to the condition represented in following table 1.In addition, using not there is the situation of thickening part 6 as comparative example 1, its structure is shown in Fig. 8.
(evaluation)
In each conductive rollers 10, add load (with reference to Fig. 6) in the direction of arrow c, measure the intensity that fractures (N) making for 5 times axle portion 2 fracture, ask the mean value of the intensity that fractures.Result is recorded in Table 1 together.
table 1
As shown in Table 1, the fracture intensity of intensity higher than comparative example 1 that fractures of embodiment 1 and embodiment 2, improves the intensity of the root of axle, can prevent fractureing of the root of axle.
Description of reference numerals
1,31 lip parts
1a, 31a bearing support
1b thickening part
2,32 axle portions
3,33 shaft components
4,34 cylindrical substrates
5,35 elasitic layers
6,36 roots
7,37 bearing partss
10,30 conductive rollers
Claims (3)
1. a conductive rollers, it is assembled with shaft component in the end of cylindrical substrate, and this shaft component has lip part and axle portion extended on the axial direction of roller, it is characterized in that,
The peripheral part of the end outside the axial direction of the roller rest of above-mentioned lip part is formed with parallel with the axial direction of roller and outstanding to the direction of the end towards above-mentioned axle portion bearing support,
The root of above-mentioned axle is formed in the position be biased inside the axial direction of roller for benchmark with the end face of above-mentioned bearing support,
Above-mentioned root is formed with thickening part, and the wall thickness in the sectional shape of the axial direction along roller of above-mentioned thickening part is thickening with the shape of the radius of curvature R with 0.2 ~ 2.0mm inside the axial direction of above-mentioned roller from the end face side of above-mentioned bearing support.
2. conductive rollers according to claim 1, is characterized in that,
The Thickness Ratio inside the axial direction of above-mentioned roller that leans in the sectional shape of the axial direction along roller of above-mentioned thickening part leans on the thickness of the end face side of above-mentioned bearing support thick.
3. conductive rollers according to claim 1, is characterized in that,
In the position being biased 0.2 ~ 2.0mm for benchmark inside the axial direction of roller with the end face of above-mentioned bearing support, there is above-mentioned thickening part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008279632A JP5269546B2 (en) | 2008-10-30 | 2008-10-30 | Conductive roller |
| JP2008-279632 | 2008-10-30 | ||
| PCT/JP2009/068712 WO2010050597A1 (en) | 2008-10-30 | 2009-10-30 | Electrically conductive roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102203440A CN102203440A (en) | 2011-09-28 |
| CN102203440B true CN102203440B (en) | 2015-01-14 |
Family
ID=42128956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980143616.1A Expired - Fee Related CN102203440B (en) | 2008-10-30 | 2009-10-30 | Electrically conductive roller |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5269546B2 (en) |
| CN (1) | CN102203440B (en) |
| WO (1) | WO2010050597A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014106366A (en) | 2012-11-27 | 2014-06-09 | Konica Minolta Inc | Developing roller, and image forming apparatus including the developing roller |
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| JP2007011026A (en) * | 2005-06-30 | 2007-01-18 | Ricoh Co Ltd | Conductive member, process cartridge, and image forming apparatus |
| JP2007286282A (en) * | 2006-04-14 | 2007-11-01 | Ricoh Co Ltd | Heating roller and manufacturing method therefor, recording medium heating device and image forming apparatus |
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| EP0454618B1 (en) * | 1990-04-26 | 1994-05-18 | Maschinenfabrik Rieter Ag | Drafting roller unit |
| JPH05288190A (en) * | 1992-04-13 | 1993-11-02 | Hitachi Ltd | Rotor with rotating body mounted on rotary shaft stepped part |
| DE4416184A1 (en) * | 1993-05-11 | 1994-11-17 | Barmag Barmer Maschf | Contact roller |
| JPH1164122A (en) * | 1997-08-25 | 1999-03-05 | Sumitomo Metal Ind Ltd | Stress calculating method in hollow roll and manufacture of hollow roll by use of this |
| JPH11267721A (en) * | 1998-03-19 | 1999-10-05 | Hitachi Ltd | Roll structure, bearing structure of roll, rolling mill using that structure and method for modifying rolling mill |
| CN1272153A (en) * | 1998-05-28 | 2000-11-01 | 巴马格股份公司 | Godet roll for guiding, heating and conveying thread |
| JP2006251004A (en) * | 2005-03-08 | 2006-09-21 | Bridgestone Corp | Conductive roller and image forming apparatus using the same |
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2008
- 2008-10-30 JP JP2008279632A patent/JP5269546B2/en not_active Expired - Fee Related
-
2009
- 2009-10-30 CN CN200980143616.1A patent/CN102203440B/en not_active Expired - Fee Related
- 2009-10-30 WO PCT/JP2009/068712 patent/WO2010050597A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007011026A (en) * | 2005-06-30 | 2007-01-18 | Ricoh Co Ltd | Conductive member, process cartridge, and image forming apparatus |
| JP2007286282A (en) * | 2006-04-14 | 2007-11-01 | Ricoh Co Ltd | Heating roller and manufacturing method therefor, recording medium heating device and image forming apparatus |
Non-Patent Citations (1)
| Title |
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| JP特开平11-267721A 1999.10.05 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010050597A1 (en) | 2010-05-06 |
| CN102203440A (en) | 2011-09-28 |
| JP2010106963A (en) | 2010-05-13 |
| JP5269546B2 (en) | 2013-08-21 |
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