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:
Jul. 29, 2014

Filed:

Mar. 25, 2013
Applicants:

Yuichi Matsushita, Nagoya, JP;

Toshio Furukawa, Nagoya, JP;

Yosuke Sugiyama, Gifu, JP;

Minoru Matsuura, Nagoya, JP;

Inventors:

Yuichi Matsushita, Nagoya, JP;

Toshio Furukawa, Nagoya, JP;

Yosuke Sugiyama, Gifu, JP;

Minoru Matsuura, Nagoya, JP;

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 15/14 (2006.01); B41J 2/435 (2006.01); B41J 2/455 (2006.01); B41J 2/47 (2006.01); B41J 27/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is provided an image forming apparatus including plural photosensitive members on which developer images are formed by supplying developer to electrostatic latent images, respectively, an exposure device which illuminates light beams onto surfaces of the photosensitive members to form the electrostatic latent images, respectively. The developer images on the respective photosensitive numbers are transferred to a transferred medium which is moved in a moving direction while contacting the respective photosensitive members. The exposure device is configured such that a beam diameter of light beam exposing a most-upstream photosensitive member in the moving direction on a surface of the most-upstream photosensitive member is larger than a beam diameter of light beam exposing a most-downstream photosensitive member in the moving direction on a surface of the most-downstream photosensitive member.


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