Fixing device and image forming apparatus

US8958734B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8958734-B2
Application numberUS-201213617000-A
CountryUS
Kind codeB2
Filing dateSep 14, 2012
Priority dateNov 22, 2011
Publication dateFeb 17, 2015
Grant dateFeb 17, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

There are provided a fixing device having excellent fixation properties when a toner image is fixed onto a member to be subjected to fixation, and an image forming apparatus including the fixing device. A fixing device includes a fixing belt, a fixing roller and a heating roller between which the fixing belt is wound under tension, and a pressure roller which is in pressure-contact with the fixing roller through the fixing belt. An elastic layer as a surface layer of the fixing roller has, when being brought into pressure-contact with the pressure roller through the fixing belt, a pressing rate of 40% or more, and an Asker C hardness of 20 degrees or more and less than 30 degrees.

First claim

Opening claim text (preview).

What is claimed is: 1. A fixing device comprising: an endless fixing belt for contacting with a toner image on a member to be subjected to fixation and fixing the toner image onto the member to be subjected to fixation; a heating roller for contacting with an inner circumferential surface of the endless fixing belt and heating the endless fixing belt; a fixing roller including a base member and an elastic layer disposed on a surface of the base member, the endless fixing belt…

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What does patent US8958734B2 cover?
There are provided a fixing device having excellent fixation properties when a toner image is fixed onto a member to be subjected to fixation, and an image forming apparatus including the fixing device. A fixing device includes a fixing belt, a fixing roller and a heating roller between which the fixing belt is wound under tension, and a pressure roller which is in pressure-contact with the fix…
Who is the assignee on this patent?
Tanaka Atsushi, Sharp Kk
What technology area does this patent fall under?
Primary CPC classification G03G15/2064. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).