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:
Mar. 08, 2016

Filed:

Oct. 22, 2014
Applicant:

Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;

Inventors:

Masato Makino, Kariya, JP;

Yuji Takimoto, Handa, JP;

Assignee:

Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/16 (2006.01); G03G 15/01 (2006.01); G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
G03G 15/1675 (2013.01); G03G 15/0142 (2013.01); G03G 15/16 (2013.01); G03G 15/6529 (2013.01); G03G 2215/0141 (2013.01);
Abstract

An image forming apparatus includes a first transfer unit and a second transfer unit, and a control device. If a prescribed condition is satisfied, the control device sets a transfer current value for the second transfer unit so that an absolute value of a difference between the first current value and a second current value is greater than an absolute value of a difference between a third current value and a fourth current value. The first current value is set in a black-white mode, in which an image is formed by using black toner only, under the prescribed condition; the second current value is set if the prescribed condition is unsatisfied in the black-white mode; the third current value is set in a multi color mode, in which an multi-color image is formed, under the prescribed condition; and the fourth current value is set if the prescribe condition is unsatisfied in the multi color mode.


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