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.

Patent No.:

US 8922845 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 30, 2014

Filed:

Feb. 27, 2013
Applicant:

Kyocera Document Solutions Inc., Osaka, JP;

Inventors:

Kenichi Onishi, Osaka, JP;

Okito Ogasahara, Osaka, JP;

Naohiro Anan, Osaka, JP;

Yasuaki Sakamoto, Osaka, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/04 (2006.01); H04N 1/10 (2006.01); H04N 1/40 (2006.01);
U.S. Cl.
CPC ...
H04N 1/1008 (2013.01); H04N 1/40037 (2013.01);
Abstract

An image forming apparatus includes an exposing section, a pulse generating section, a frequency storing section, an emission control section, a smoothing section, and a driving-current generating section. The pulse generating section generates a periodic pulse signal indicating light amount of light beam emitted by a light source of the exposing section. The frequency storing section stores in advance a plurality of frequencies of the pulse signal. The emission control section selects, in the rendering of each main scanning line, any one of the plurality of frequencies and instructs the pulse generating section to generate the pulse signal having the selected frequency. The smoothing section smoothes the pulse signal generated by the pulse generating section according to the instruction of the emission control section and generates analog signal. The driving-current generating section generates driving current for the light source of the exposing section on the basis of the analog signal.


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