ES123246A1 - A procedure to improve the contrast of tones or values in photographic and photomechanical reproductions in general. - Google Patents

A procedure to improve the contrast of tones or values in photographic and photomechanical reproductions in general.

Info

Publication number
ES123246A1
ES123246A1 ES123246A ES123246A ES123246A1 ES 123246 A1 ES123246 A1 ES 123246A1 ES 123246 A ES123246 A ES 123246A ES 123246 A ES123246 A ES 123246A ES 123246 A1 ES123246 A1 ES 123246A1
Authority
ES
Spain
Prior art keywords
tones
photographic
contrast
procedure
values
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
ES123246A
Other languages
Spanish (es)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to ES123246A priority Critical patent/ES123246A1/en
Publication of ES123246A1 publication Critical patent/ES123246A1/en
Expired legal-status Critical Current

Links

ES123246A 1931-06-05 1931-06-05 A procedure to improve the contrast of tones or values in photographic and photomechanical reproductions in general. Expired ES123246A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES123246A ES123246A1 (en) 1931-06-05 1931-06-05 A procedure to improve the contrast of tones or values in photographic and photomechanical reproductions in general.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES123246A ES123246A1 (en) 1931-06-05 1931-06-05 A procedure to improve the contrast of tones or values in photographic and photomechanical reproductions in general.

Publications (1)

Publication Number Publication Date
ES123246A1 true ES123246A1 (en) 1931-07-01

Family

ID=65581368

Family Applications (1)

Application Number Title Priority Date Filing Date
ES123246A Expired ES123246A1 (en) 1931-06-05 1931-06-05 A procedure to improve the contrast of tones or values in photographic and photomechanical reproductions in general.

Country Status (1)

Country Link
ES (1) ES123246A1 (en)

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