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Foamed rubber roller

A technology of rubber roller and foam, applied in the field of foam rubber roller

Inactive Publication Date: 2008-05-14
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the rubber in the toner supply roller foams at a higher foaming ratio

Method used

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  • Foamed rubber roller
  • Foamed rubber roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0168] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0169] As shown in FIG. 1, a foam rubber roller 10 in the present invention has a shaft 2 and a foam elastic layer 1 formed on its outer surface.

[0170] The formed foam elastic layer 1 has a cylindrical shape. The thickness of the foam elastic layer is 2-10 mm, preferably 3-6 mm. If the thickness of the foamed elastic layer 1 is less than 2 mm, it is difficult to obtain a suitable nip. If the thickness of the foam elastic layer 1 is greater than 10 mm, the foam elastic layer 1 is large, making it difficult to form a small and light foam rubber roller 10 .

[0171] The shaft 2 is made of metal such as aluminum, aluminum alloy, stainless steel (SUS) or iron, or ceramics.

[0172] The foamed elastic layer 1 and the shaft 2 may be bonded to each other with a conductive adhesive. It is also possible to insert the cylindrical shaft 2 into the hollow portion of t...

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Abstract

A foamed rubber roller includes a foamed elastic layer formed as an outer layer thereof. The foamed elastic layer is composed of a thermosetting elastomer composition containing 100 parts by mass of a rubber component and 5 to 60 parts by mass of zinc methacrylate or 5 to 60 parts by mass of a mixture of methacrylic acid and zinc oxide as a filler. The thermosetting elastomer composition is foamed with a chemical foaming agent or a combination of a chemical foaming agent and a chemical foaming assistant agent.

Description

technical field [0001] The present invention relates to a foam rubber roller having a sponge-like foam elastic layer, which is preferably used as a toner supply roller for supplying developer to the toner of a developing mechanism in an image forming apparatus such as a copying machine, a facsimile machine, and a printer. on the surface of the powder-carrying part. Background technique [0002] In an image forming apparatus, various conductive rollers are used in a developing mechanism to attach toner to an electrophotographic image formed by exposing the image to a uniformly charged photosensitive drum. [0003] The toner supply roller is one of the conductive rollers used in the developing mechanism, and its function is to provide the toner particles contained in the toner box to the developing roller. The toner supply roller is required to have low hardness so that when the toner supply roller is used to supply toner particles to the developing roller, the toner supply r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/00C08L9/02C08J9/06C08K5/09
CPCC08J9/0066C08J2315/00C08K5/098G03G2215/0869C08J9/06G03G15/0808C08J2309/02C08J2351/04H01B1/24G03G2215/0634C08J2201/024C08L15/005
Inventor 水本善久杉本睦树
Owner SUMITOMO RUBBER IND LTD