US3281242A - Multigeneration photographic printing - Google Patents
Multigeneration photographic printing Download PDFInfo
- Publication number
- US3281242A US3281242A US344254A US34425464A US3281242A US 3281242 A US3281242 A US 3281242A US 344254 A US344254 A US 344254A US 34425464 A US34425464 A US 34425464A US 3281242 A US3281242 A US 3281242A
- Authority
- US
- United States
- Prior art keywords
- negative
- image
- generation
- contrast
- gamma
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
- G03C1/732—Leuco dyes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/02—Sensitometric processes, e.g. determining sensitivity, colour sensitivity, gradation, graininess, density; Making sensitometric wedges
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/56—Processes using photosensitive compositions covered by the groups G03C1/64 - G03C1/72 or agents therefor
Definitions
- the principal object of this invention is to provide a procedure for reproducing silver halidefilm negatives.
- the procedure consists of the following sequence of steps, starting with a silver halide negative bearing the radiant energy provided by two General Electric sun lamps. This produces the blue second-generation positive print and, depending on the exposure, may produce a change in contrast and gamma or may reproduce the original negative with these characteristics essentially unchanged.
- the second step in the procedure is the printing of a third-generation negative image by exposing a suitable photosensitive composition to suitably filtered visible radiation provided by a photoflood lamp, through the blue second-generation print.
- a suitable photosensitive composition to suitably filtered visible radiation provided by a photoflood lamp
- the photosensitive material utilized for the third-generation print is one based on 3,281,242 Patentedv Oct. 25, 1966 "ice Example 14 of United States Patent 3,109,736, for example. At this point the image is a black negative image.
- the ultraviolet-sensitive diphenylamine-c-arbon tetrabromide blue-image copy material identified in the tables below as blue image material was prepared as follows: A coating solution was prepared according to the follow ing formula:
- This solution was applied by a meniscus coating technique on a roll coating machine to a polyester film base of 3-mil thickness, which had been presubbed with a cellulose ester receptive layer.
- the solution was absorbed bythe sublayer on the film, the quantity of material taken up being regulated by the speed of travel of the film.
- the visible-light-sensitive trinuclear merocyanine base black-image copy material identified in the tables below as black image material was prepared as follows.
- a coating solution was prepared according to the following formula. (The trinuclear merocyanine base referred to as Dye below has the struture shown):
- contrast is intended to mean the difference in visual brilliance between one part of an image and another and is proportional to the product of TABLE II Exposure Conditions Gener- Film D-max. D-min. AD Gamma ation '7 Filter Lights Time FROM LOW-CONTRAST NEGATIVE Negative 0. 70 0. 19 0. 51 0. 47 Blue Image Material" Four GESL 2.5 min 1. 24 0. 51 0.73 O. 75 Black Image MateriaL Four DXC. 3 min 1.48 0. 65 0. 83 0. 84 .d0 do 3min 1.20 0.27 0.93 1.05
- the densities of the step tablet portion of the print were read with a densitometer through an appropriate filter and the results were plotted on a density vs. step curve to illustrate the tonal range achieved with each generation.
- the two photosensitive compositions utilized namely those described in Wainer United States Patent 3,042,515 and those described in United States Patent 3,109,736 are particularly suited to the multigeneration printing process described whereby silver halide negatives exhibiting an unsatisfactory contrast AD and/or 'y may be reprinted first on a diphenylaminetive makes with the horizontal when the density is plotted versus the logarithm of the exposure, i.e. a gamma of 1 is equal to a slope of 45.
- gamma serves to measure the contrast, i. e. the rate at which density increases as the exposure increases, in the straight line portion of the H-D curve.
- a process for obtaining a negative with a contrast of about 1 and a gamma of about 1 from a negative possessing an image in which at least one of the contrast and the gamma has a value appreciably difierent from unity which comprises:
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US344254A US3281242A (en) | 1964-02-12 | 1964-02-12 | Multigeneration photographic printing |
GB48148/64A GB1083734A (en) | 1964-02-12 | 1964-11-26 | Multigeneration photographic printing |
NL6414006A NL6414006A (pt) | 1964-02-12 | 1964-12-02 | |
DE19641547933 DE1547933A1 (de) | 1964-02-12 | 1964-12-04 | Photographisches Verfahren |
FR5428A FR1424693A (fr) | 1964-02-12 | 1965-02-12 | Tirage photographique à plusieurs générations |
BE659686D BE659686A (pt) | 1964-02-12 | 1965-02-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US344254A US3281242A (en) | 1964-02-12 | 1964-02-12 | Multigeneration photographic printing |
Publications (1)
Publication Number | Publication Date |
---|---|
US3281242A true US3281242A (en) | 1966-10-25 |
Family
ID=23349708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US344254A Expired - Lifetime US3281242A (en) | 1964-02-12 | 1964-02-12 | Multigeneration photographic printing |
Country Status (5)
Country | Link |
---|---|
US (1) | US3281242A (pt) |
BE (1) | BE659686A (pt) |
DE (1) | DE1547933A1 (pt) |
GB (1) | GB1083734A (pt) |
NL (1) | NL6414006A (pt) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2815350C2 (de) * | 1978-04-10 | 1983-01-05 | Bernhardt, Karl-Heinz, 6497 Steinau | Photographisches Kopierverfahren zur Herstellung von optischen Reprographien silberemulsionshaltiger Diapositive |
US4486220A (en) * | 1983-04-18 | 1984-12-04 | Shell Oil Company | 6-Oxatricyclo[3.2.1.13,8 ]nonan-4-ol ethers and compositions and methods for the regulation of plant growth |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2202026A (en) * | 1937-03-18 | 1940-05-28 | Ilford Ltd | Photographic printing process and material |
US3042515A (en) * | 1959-01-16 | 1962-07-03 | Horizons Inc | Print-out compositions for photographic purposes and process of using same |
US3109736A (en) * | 1962-04-06 | 1963-11-05 | Horizons Inc | Light-sensitive merocyanine dye base compositions |
-
1964
- 1964-02-12 US US344254A patent/US3281242A/en not_active Expired - Lifetime
- 1964-11-26 GB GB48148/64A patent/GB1083734A/en not_active Expired
- 1964-12-02 NL NL6414006A patent/NL6414006A/xx unknown
- 1964-12-04 DE DE19641547933 patent/DE1547933A1/de active Pending
-
1965
- 1965-02-12 BE BE659686D patent/BE659686A/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2202026A (en) * | 1937-03-18 | 1940-05-28 | Ilford Ltd | Photographic printing process and material |
US3042515A (en) * | 1959-01-16 | 1962-07-03 | Horizons Inc | Print-out compositions for photographic purposes and process of using same |
US3109736A (en) * | 1962-04-06 | 1963-11-05 | Horizons Inc | Light-sensitive merocyanine dye base compositions |
Also Published As
Publication number | Publication date |
---|---|
BE659686A (pt) | 1965-05-28 |
NL6414006A (pt) | 1965-08-13 |
DE1547933A1 (de) | 1969-12-11 |
GB1083734A (en) | 1967-09-20 |
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