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:
Jun. 09, 1987
Filed:
Aug. 29, 1984
Applicant:
Inventors:
Michihisa Suga, Tokyo, JP;
Mitsuo Tsuzuki, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461 / ;
Abstract
An on-demand type ink-jet printer with a thin cylindrical tip end coaxially projecting into a cylindrical passageway. Ink droplet formation is controlled by a piezoelectric transducer. A stream of air is forced through an annular space formed between the tip end and passageway. The air pressures acting on a meniscus at the tip end is controlled by the position of the tip end within the passageway. A solvent for the ink saturates a porous member surrounding the end of the passageway to control drying of the ink.