Radiation imagery chemistry: process – composition – or product th – Plural exposure steps
Reexamination Certificate
2005-08-02
2005-08-02
McPherson, John A. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Plural exposure steps
C430S311000, C430S005000, C430S022000, C438S401000
Reexamination Certificate
active
06924090
ABSTRACT:
A method of recording different identifiers, each including at least one character, on multiple plate-type members, involves the use of a photomask of a first type and at least two photomasks of a second type. The photomask of the first type has an opaque pattern that defines a blank region to write the identifier thereon. Each of the photomasks of the second type has an opaque pattern defining the at least one character. The method further includes the steps of forming a photoresist layer on the surface of one of the plate-type members, exposing the photoresist layer, except the blank region, to a radiation through the photomask of the first type, and forming a latent image of the at least one character in the blank region through at least one of the photomasks of the second type.
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U.S. Appl. No. 10/229,038; “Method of Recording Identifier and Set of Photomasks”; filed on Aug. 28, 2002; Taisuke Hirooka.
Chacko-Davis Daborah
Keating & Bennett LLP
McPherson John A.
Neomax Co. Ltd.
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