CA949799A - Durable transparent mask for photographical processing and method of making the same - Google Patents

Durable transparent mask for photographical processing and method of making the same

Info

Publication number
CA949799A
CA949799A CA084,195A CA84195A CA949799A CA 949799 A CA949799 A CA 949799A CA 84195 A CA84195 A CA 84195A CA 949799 A CA949799 A CA 949799A
Authority
CA
Canada
Prior art keywords
photographical
making
processing
same
transparent mask
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA084,195A
Inventor
Charles J. Smatlak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of CA949799A publication Critical patent/CA949799A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/54—Absorbers, e.g. of opaque materials
CA084,195A 1969-07-23 1970-06-01 Durable transparent mask for photographical processing and method of making the same Expired CA949799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84414169A 1969-07-23 1969-07-23

Publications (1)

Publication Number Publication Date
CA949799A true CA949799A (en) 1974-06-25

Family

ID=25291929

Family Applications (1)

Application Number Title Priority Date Filing Date
CA084,195A Expired CA949799A (en) 1969-07-23 1970-06-01 Durable transparent mask for photographical processing and method of making the same

Country Status (3)

Country Link
CA (1) CA949799A (en)
FR (1) FR2055489A5 (en)
GB (1) GB1321288A (en)

Also Published As

Publication number Publication date
GB1321288A (en) 1973-06-27
FR2055489A5 (en) 1971-05-07

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