Etching a substrate: processes – Forming or treating thermal ink jet article
Reexamination Certificate
2006-09-29
2010-02-23
Norton, Nadine (Department: 1792)
Etching a substrate: processes
Forming or treating thermal ink jet article
C029S729000, C029S254000, C029S254000, C347S029000, C347S047000, C347S084000, C430S005000
Reexamination Certificate
active
07666322
ABSTRACT:
For forming a group or rows of nozzles in a substrate of an ink-jet head, firstly, a laser irradiation source and a masking material in which a plurality of holes arranged in two rows are formed, are arranged on an upper side of a position at which one group of rows of nozzles of the substrate is formed. Next, an ultraviolet laser is irradiated from an upper side of the masking material, and a laser which has passed through the masking material is irradiated on the substrate. Two rows of nozzles are formed in a portion of the substrate at which the ultraviolet laser is irradiated. Accordingly, by irradiation of the laser once, it is possible to form a plurality of nozzles arranged in a row.
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European Patent Office, European Search Report for EP Appl'n No. 06020314.8-2304 (counterpart to the above-captioned U.S. patent appl'n) dated Mar. 19, 2008.
Aoki Hikoharu
Obara Kentaro
Sugahara Hiroto
Angadi Maki
Baker & Botts L.L.P.
Brother Kogyo Kabushiki Kaisha
Norton Nadine
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