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:
Apr. 03, 1990
Filed:
Jun. 10, 1987
Nobumasa Abe, Nagano, JP;
Kiyoharu Momose, Nagano, JP;
Koji Watanabe, Nagano, JP;
Yuichi Nakamura, Nagano, JP;
Tsuneo Handa, Nagano, JP;
Mitsutaka Nishikawa, Nagano, JP;
Seiko Epson Corporation, , JP;
Abstract
A thermal ink jet recording apparatus includes at least a substrate having a gap disposed over an ink reservoir on a base in communication with an ink source. A film circuit of electrodes and heating elements is formed on each substrate. A nozzle plate covering the substrates has a lower step portion and a upper step portion. The upper step portion includes nozzles substantially directly above and corresponding to the plurality of heating elements. Ink which is used for this apparatus includes ionic or non-ionic surface active agents for increasing permeability of the ink on a recording medium.