Image forming apparatus

US9195164B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9195164-B2
Application numberUS-201414526586-A
CountryUS
Kind codeB2
Filing dateOct 29, 2014
Priority dateOct 29, 2013
Publication dateNov 24, 2015
Grant dateNov 24, 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 an image carrier which carries thereon a developer image, a holding roller which holds thereon developer attached on the image carrier, a collection device which collects the developer on the holding roller via at least the image carrier, and a control device which executes a holding control of applying to the holding roller a holding bias having a polarity opposite to the developer such that the holding roller holds developer and a collection control of applying to the holding roller a discharge bias having a polarity same as the developer such that the developer held on the holding roller is moved to the image carrier and the collection device collects the developer via the image carrier. The control device starts the collection control at a timing after a predetermined point of time according to an estimated charge amount of the developer.

First claim

Opening claim text (preview).

What is claimed is: 1. An image forming apparatus comprising: an image carrier configured to carry thereon a developer image; a holding roller provided to contact the image carrier and configured to hold thereon developer attached on the image carrier; a collection device configured to collect the developer on the holding roller via at least the image carrier; and a control device configured to execute a holding control of applying to the holding roller a holding bias having…

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What does patent US9195164B2 cover?
An image forming apparatus includes an image carrier which carries thereon a developer image, a holding roller which holds thereon developer attached on the image carrier, a collection device which collects the developer on the holding roller via at least the image carrier, and a control device which executes a holding control of applying to the holding roller a holding bias having a polarity o…
Who is the assignee on this patent?
Brother Ind Ltd
What technology area does this patent fall under?
Primary CPC classification G03G15/065. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Nov 24 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).