Patent · US Active

Image forming apparatus

US10151994B2 · kind B2 · utility

1Cited by

2References

4Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Kota Mori · Abiko, JP
Takeshi Fujino · Yokohama, JP

Key dates

Filing date	Jun 28, 2017
Grant date	Dec 11, 2018
Priority date	—
Expiry date	Jun 28, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/0266
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An image forming apparatus includes a photosensitive member, a charging roller, a voltage source, a current detecting member, and a setting portion configured to set the DC voltage applied to the charging roller in an image forming period on the basis of a detection result of the detecting member when a DC voltage less than a discharge start voltage is applied from the voltage source to the charging roller in a period other than the image forming period, wherein the setting portion sets the DC voltage so that an absolute value of the DC voltage when an absolute value of the detected current is a first value is larger than an absolute value of the DC voltage when the absolute value of the detected current is a second value smaller than the first value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.