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:
Dec. 27, 1994
Filed:
Apr. 20, 1992
Shigeyuki Matsumoto, Atsugi, JP;
Yasuhiro Naruse, Kanagawa, JP;
Genzo Monma, Hiratsuka, JP;
Kei Fujita, Sagamihara, JP;
Seiji Kamei, Hiratsuka, JP;
Yutaka Akino, Isehara, JP;
Yasuhiro Sekine, Yokohama, JP;
Yukihiro Hayakawa, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for producing a substrate for a recording head wherein a plurality of electro-thermal converting elements, a plurality of driving functional elements for respectively driving the electro-thermal converting elements and a plurality of wiring electrodes for respectively connecting each of the driving functional elements and each of the electro-thermal converting elements are formed on a supporting member by photolithography comprises forming the wiring electrodes by etching a material layer for the wiring electrodes while etchingwise removing a photoresist for masking the material layer for the wiring electrodes.