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:
Aug. 02, 2005

Filed:

Jun. 14, 2002
Applicants:

Tatsuhiko Oikawa, Kanagawa, JP;

Toshihito Kamei, Tokyo, JP;

Takashi Kimura, Kanagawa, JP;

Sumiaki Aoki, Kanagawa, JP;

Mikio Ohashi, Kanagawa, JP;

Inventors:

Tatsuhiko Oikawa, Kanagawa, JP;

Toshihito Kamei, Tokyo, JP;

Takashi Kimura, Kanagawa, JP;

Sumiaki Aoki, Kanagawa, JP;

Mikio Ohashi, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J029/38 ;
U.S. Cl.
CPC ...
Abstract

A head driving unit the generates a driving waveform, each driving waveform including a plurality of driving pulses, and selects one or more driving pulses to be applied to a liquid drop discharging head in response to data corresponding to an image. By selecting a plurality of selection signals that defines the driving pulses to be applied to the liquid discharging head, the head driving unit can change a recording density or record multiple value images.


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