Unlock instant, AI-driven research and patent intelligence for your innovation.

Pressing roller and its making method

A pressure roller, organic technology, applied in the field of pressure rollers, can solve problems such as offset, reduced fixability, and difficulty in melting, and achieves the effects of low cost, improved heating efficiency, and excellent elasticity

Active Publication Date: 2008-09-17
SUMITOMO ELECTRIC FINE POLYMER INC
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The present inventors have studied and found that although the pressure roller (the pressure roller has a rubber layer provided between the roller base material and the heat-resistant resin layer and contains organic microcapsules) has the above-mentioned excellent characteristics, but when this pressure roller is used in a fixing unit of a printer having a high printing speed, it tends to disadvantageously cause a decrease in fixing performance and occurrence of offset
In color printing, it is particularly difficult to rapidly fuse a thick unfixed toner image formed by laminating toners of different colors under the high-speed printing conditions described above.
[0023] The above unfavorable phenomenon shows that the heating efficiency of the fixing unit containing the known pressure roller is not sufficient

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
  • Pressing roller and its making method
  • Pressing roller and its making method
  • Pressing roller and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] according to figure 2 In the production method shown, a pressure roll having a rubber layer containing organic microcapsules, a heat-conductive intermediate rubber layer, and a fluorine-containing resin layer (heat-resistant resin layer) provided on a roll base material in this order is produced.

[0154] (1) Formation of fluororesin layer

[0155] The inner surface of a cylindrical aluminum metal mold with an inner diameter of 24 mm and a length of 300 mm was plated with chrome. PFA powder (MP-102, manufactured by DuPont Corporation) was coated on the chrome-plated surface (surface roughness: 20 μm or less) by a powder coating method. The resulting coating was heat-treated at 380° C. for 30 minutes to form a fluorine-containing resin coating having a thickness of about 20 μm. The thermal conductivity of the fluorine-containing resin coating is 0.19 W / m·K.

[0156] By coating the surface of fluororesin coating (manufactured by Junkosha Co.) and rinse the surface w...

Embodiment 2

[0174] (1) Forming a heat-resistant resin layer with thermal conductivity

[0175] The inner surface of a cylindrical aluminum metal mold with an inner diameter of 24 mm and a length of 300 mm was plated with chrome. Using the powder coating method, a fluorine-containing resin powder (MP623, manufactured by DuPont Corporation) onto the inner surface of a cylindrical aluminum metal mold. The resulting coating was heat-treated at 380° C. for 30 minutes to form a fluorine-containing resin coating having a thickness of about 20 μm. The thermal conductivity of this fluorine-containing resin coating was 0.63 W / m·K.

[0176] By coating the surface of fluororesin coating (manufactured by Junkosha Co.) and rinse the surface with water to etch.

[0177] (2) Forming the middle rubber layer

[0178] A one-component addition type liquid silicone rubber containing a thermally conductive filler (X32-2020, manufactured by Shin-Etsu Chemical Co., Ltd.) was coated on the surface of the fl...

Embodiment 3

[0187] (1) Form rubber containing organic microcapsules

[0188] The inner surface of a cylindrical aluminum metal mold with an inner diameter of 23 mm and a length of 300 mm was plated with chrome. A primer (DY39-012, manufactured by Dow Corning Toray Co.) was applied to the surface of a mandrel (cylindrical roll substrate) made of aluminum and having an outer diameter of 20 mm and a length of 300 mm, and air-dried . A mandrel was inserted into the hollow of a cylindrical metal mold having a fluororesin coating and an intermediate rubber layer in such a manner that the centerlines of the two shafts overlapped each other.

[0189] Microcapsules containing liquid silicone rubber (KE1380, manufactured by Shin-Etsu Chemical Co., Ltd.), 40% by volume (relative to the total amount) of vinylidene chloride-acrylonitrile copolymer (manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) and 5 Parts by weight of glycerin (ratio to 100 parts by weight of liquid silicone rubber) was supplie...

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

No PUM Login to View More

Abstract

A pressing roller and a method of producing the pressing roller. The pressing roller has a rubber layer containing organic microballoons and a heat resistant resin layer that are placed in that order on a roller base material. An intermediate rubber layer with a heat conduction coefficient of 1.0-4.0 W / mK is placed between the rubber layer containing the organic microballoons and the heat resistant resin layer.

Description

technical field [0001] The present invention relates to a pressure roller used in a fixing unit of an image forming apparatus using an electrophotographic method. More specifically, the present invention relates to a pressure roller provided opposite to a fixing roller or a fixing belt in a fixing unit, which is used to press a toner image formed on a transfer material such as paper. Heat and pressure are applied to fix the toner image on the transfer material. Background technique [0002] In an image forming apparatus (for example, a copying machine, a facsimile machine, and a laser beam printer) using an electrophotographic method (including an electrostatic recording method), an image is generally formed through a series of steps: a charging step of uniformly charging a photoconductor drum; making the image an exposure step of exposing to form an electrostatic latent image on the photoconductor drum; a developing step of attaching toner (developer powder) to the electro...

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): G03G15/20
CPCG03G15/2057
Inventor 池田吉隆木泽一浩
Owner SUMITOMO ELECTRIC FINE POLYMER INC