The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 23, 2018

Filed:

Feb. 23, 2018
Applicant:

Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;

Inventors:

Hideo Mae, Kitanagoya, JP;

Tatsutoshi Yamada, Toyokawa, JP;

Atsushi Kawai, Toyokawa, JP;

Hideaki Komiyama, Ibaraki, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 21/16 (2006.01); G03G 21/00 (2006.01); G03G 9/08 (2006.01); G03G 15/00 (2006.01); G03G 15/02 (2006.01);
U.S. Cl.
CPC ...
G03G 21/0088 (2013.01); G03G 9/0825 (2013.01); G03G 15/0275 (2013.01); G03G 15/50 (2013.01);
Abstract

An image forming apparatus includes: a photosensitive member; a charger that charges a surface of the photosensitive member; an exposure device that forms a latent image; and a developing device that applies toner to the latent image, wherein the photosensitive member is incorporated in a detachable photosensitive member unit, and the developing device is incorporated in a detachable developing unit, the image forming apparatus including: an optimization controller that performs optimization of a charging bias of the charger and a developing bias of the developing device; and a replacement determiner that determines which of the photosensitive member unit and the developing unit is to be replaced when an optimized developing bias is out of a predetermined allowable range, wherein the replacement determiner determines that the developing unit is to be replaced, and determines that the photosensitive member unit is to be replaced.


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