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:
Aug. 19, 1986
Filed:
Dec. 13, 1984
Applicant:
Inventor:
Tetsu Yamamuro, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461 / ; 346 / ;
Abstract
An optical ink jet head for an ink jet printer irradiates a photochemically reactive substance by an active electromagnetic wave to generate gas so that ink is ejected by the pressure of the gas. In optical communications, optical signals transmitted by optical fibers are directly used to drive an ink jet head to eject ink drops complementary to the optical signals from ink ejection nozzles of the head.