Invention Grant
- Patent Title: Image forming apparatus having transfer bias power controller
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Application No.: US15383369Application Date: 2016-12-19
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Publication No.: US10042293B2Publication Date: 2018-08-07
- Inventor: Naoto Kochi , Shinya Tanaka , Takehide Mizutani
- Applicant: Naoto Kochi , Shinya Tanaka , Takehide Mizutani
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2015-253847 20151225
- Main IPC: G03G15/16
- IPC: G03G15/16

Abstract:
An image forming apparatus includes a transfer power supply and a controller. The controller is configured to execute control for an end-portion voltage that is a DC voltage of a transfer bias at a time of transferring a toner image to an end portion of a recording sheet and a body-portion voltage that is a DC voltage of a transfer bias at a time of transferring a toner image to a body portion on a rear side of an end portion of a recording sheet, such that the end-portion voltage is set to be higher than the body-portion voltage in the DC transfer bias and a value obtained by dividing the end-portion voltage by the body-portion voltage in the superimposed transfer bias is set to be smaller than a value obtained by dividing the end-portion voltage by the body-portion voltage in the DC transfer bias.
Public/Granted literature
- US20170185007A1 IMAGE FORMING APPARATUS Public/Granted day:2017-06-29
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