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:
Nov. 22, 1983
Filed:
Jan. 25, 1982
Applicant:
Inventor:
Junji Maeda, Kyoto, JP;
Assignee:
Sanyo Denki Kabushiki Kaisha, Moriguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461 / ;
Abstract
An on-demand type ink jet printer and an ink droplet projecting device to be used for said printer, which prevents clogging in the orifice resulting from drying and solidification of ink and is constructed in such manner that an air cell filled with air at the time of ink droplet projection and with a liquid at the time of non-ink-droplet-projection is provided in front of an orifice through which ink droplets are projected, and that, in said air cell another orifice facing the aforesaid orifice is coaxially provided in a position opposite to that of the aforesaid orifice.