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.:
Date of Patent:
Feb. 27, 2001
Filed:
Jul. 16, 1998
Tomoaki Nakano, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A plurality of pressure-application ink chambers communicate with a plurality of nozzles, respectively. A plurality of energy generating elements generate energy for applying pressure to ink in the plurality of pressure-application ink chambers so as to cause ink drops to be fired from the plurality of nozzles, respectively. A driving-waveform generating portion generates a plurality of driving waveforms for driving the plurality of energy generating elements. A driving-waveform selecting portion selects one of the plurality of driving waveforms generated by the driving-waveform generating portion for each one of the plurality of energy generating elements in accordance with image information.