Conductive roller and image-forming apparatus having conductive roller

A conductive roller, conductive technology, applied in the direction of corona discharge device, conductive material dispersed in non-conductive inorganic material, equipment of electric recording process using charge pattern, etc., can solve the difficulty of disposal and can not be reduced Problems such as the sum of the ratio, the resistance resistance voltage dependence and the resistance environment dependence reduction, achieve the effect of excellent environmental protection performance

Inactive Publication Date: 2004-06-02
SUMITOMO RUBBER IND LTD
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem is that it cannot completely take into account the error of resistance caused by different parts, the voltage dependence of resistance and the reduction of environmental dependence of resistance.
[0018] That is, even if some environmental dependence can be reduced by adding an electronically conductive substance, it will correspondingly increase the resistance error and voltage dependence, and it is difficult to fully balance the two
In other words, at present, even if the ratio of the environmental dependence and the voltage dependence of the resistance can be changed, the sum of the ratios cannot be reduced
[0019] In addition, when chlorine-based or bromine-based rubber components such as epichlorohydrin rubber are used as ion-conductive rubber, there is a risk of generating toxic hydrogen chloride gas and dioxins due to incineration after use. Increased awareness of its disposal disposal difficulties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive roller and image-forming apparatus having conductive roller
  • Conductive roller and image-forming apparatus having conductive roller
  • Conductive roller and image-forming apparatus having conductive roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0137] The conductive elastic layer is formed using a polymer composition containing a non-chlorine and non-bromine-based polymer as a main component and containing a salt of an anion having a fluorine group and a sulfonyl group. As the non-chlorine and non-bromine-based polymer, NBR, which is a polymer having a cyano group, and, if necessary, ethylene oxide-propylene oxide-allyl glycidyl ether copolymer (EO), which is a polyether polymer, are used. :PO:AGE=90:4:6) and EPDM as a low-polarity ozone-resistant rubber. As a salt of an anion having a fluorine group and a sulfonyl group, lithium-bis(trifluoromethanesulfonyl)imide was used. In addition, as lithium-bis(trifluoromethanesulfonyl)imide, a product synthesized by a conventionally known method described in Japanese Patent Laid-Open No. 2001-288193 and the like is used. In addition, the salt of the anion having a fluorine group and a sulfonyl group is not compounded through a medium composed of a low molecular weight polyet...

Embodiment 6～ Embodiment 17

[0190] The salt of an anion having a fluorine group and a sulfonyl group is mixed into 100 parts by weight of a mixture (mixed rubber) of EPDM and NBR in an amount of 0.01 to 20 parts by weight, ADCA or / and OBSH are used as chemical foaming agents, and The foaming aid is foamed using urea as necessary to obtain the conductive foamed roller of the present invention.

Embodiment 18～ Embodiment 21

[0232] In a mixed rubber in which NBR, EPDM, and EO-PO-AGE copolymer with an acrylonitrile content of 18% are blended in each predetermined weight ratio, a salt having an anion containing a fluorine group and a sulfonyl group is dispersed in a predetermined weight ratio. The rubber composition was foamed with a chemical foaming agent, and each was made into a conductive roller.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
electrical resistanceaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

Provided is a conductive roller in which the variation in electric resistance due to environment and the change with time can be made small while low electric resistance is maintained and the variance in electric resistance depending upon the position of the roller is reduced and which can stably form an excellent image and is friendly to environment, or an image forming apparatus equipped with the same. The conductive roller 10 including at least one conductive elastic layer 1 formed of a polymer composition includes a main-component polymer not containing chlorine nor bromine and containing polyether or / and a cyan group; and an anion-containing salt having a fluoro group and a sulfonyl group. The anion-containing salt having the fluoro group and the sulfonyl group includes at least one salt selected from among a salt of bisfluoroalkylsulfonylimide, a salt of fluoroalkylsulfonic acid, and a salt of tris (fluoroalkylsulfonyl) methide.

Description

technical field [0001] The present invention relates to an electroconductive roller and an image forming apparatus having the electroconductive roller. The environmental dependence and time-dependent performance of the electrical resistance of the conductive rollers of the image forming apparatuses of office machines such as facsimile machines and ATMs can be improved, and the resistance errors caused by the different parts of the rollers can be reduced, and stable and good images can be formed. Background technique [0002] In image forming apparatuses of office machines such as printers, electrophotographic copiers, and facsimile apparatuses, conductive rollers such as charging rollers, developing rollers, and toner supplying rollers are used. When an image is formed with such a machine, first, a charging roller uniformly charges an electrostatic latent image holder such as a photosensitive drum. Next, an electrostatic latent image is forme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/20F16C13/00G03G15/02G03G15/08
CPCG03G15/0233G03G2215/0177H01B1/20
Inventor 纪拥军服部高幸奥田清隆上坂宪市
Owner SUMITOMO RUBBER IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap