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Rotation detecting device, sheet feeding device, and image forming apparatus

US9033335B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9033335-B2
Application numberUS-201113008490-A
CountryUS
Kind codeB2
Filing dateJan 18, 2011
Priority dateJan 19, 2010
Publication dateMay 19, 2015
Grant dateMay 19, 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.

An image forming apparatus includes a sheet feeding device ( 1 ). The sheet feeding device ( 1 ) includes a sheet feeding cassette ( 2 ), a push-up member ( 4 ), a drive shaft ( 5 ), and a rotation detecting device ( 6 ). The rotation detecting device ( 6 ) includes an output gear connected to the drive shaft ( 5 ). The output gear includes a gear main body provided with a gear tooth on its outer edge; and an electrode holding member that is attached to the gear main body. The electrode holding member is rotatably provided in the case ( 9 ) and a rotating electrode is attached to the electrode holding member. The electrode holding member is formed of at least one thermoplastic resin selected from the group consisting of POM, PA, PBT, PP, PE, ABS resin, PS, PPE, PC, and PMMA. The gear main body is formed of a material whose strength is higher than thermoplastic resin of which the electrode holding member is formed.

First claim

Opening claim text (preview).

What is claimed is: 1. A rotation detecting device comprising: a case; an output gear rotatably supported by the case; a rotating electrode attached to the output gear; and a fixed electrode that is attached to the case and comes into contact with the rotating electrode to detect rotation of the output gear, the output gear including: a gear main body provided with a gear tooth on an outer edge; and an electrode holding member to which the rotating electrode is attache…

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Frequently asked questions

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What does patent US9033335B2 cover?
An image forming apparatus includes a sheet feeding device ( 1 ). The sheet feeding device ( 1 ) includes a sheet feeding cassette ( 2 ), a push-up member ( 4 ), a drive shaft ( 5 ), and a rotation detecting device ( 6 ). The rotation detecting device ( 6 ) includes an output gear connected to the drive shaft ( 5 ). The output gear includes a gear main body provided with a gear tooth on its out…
Who is the assignee on this patent?
Ide Yasutomo, Yamagata Masanobu, Kato Shinichi, and 3 more
What technology area does this patent fall under?
Primary CPC classification B65H7/02. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue May 19 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).