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:
Oct. 13, 1992
Filed:
Jul. 24, 1991
Shinro Oikawa, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A thermal ink jet printing apparatus has a film having a number of small apertures formed in the front thereof and retaining liquid ink in the apertures. The film is located to face a thermal head having heating elements. As the heating elements are selectively energized in response to a signal representative of a particular image pattern, the ink in the apertures evaporates to exert a pressure on the ink. As a result, the ink is ejected toward a recording medium to form an image thereon. An ink retaining layer is provided on the rear of the film and communicated to the apertures. Alternatively, an ink well may be formed in a portion of the thermal head that faces the rear of the film and communicated to the apertures.