US1499230A - Method of producing photographic plates for indirect tricolor photography - Google Patents
Method of producing photographic plates for indirect tricolor photography Download PDFInfo
- Publication number
- US1499230A US1499230A US487526A US48752621A US1499230A US 1499230 A US1499230 A US 1499230A US 487526 A US487526 A US 487526A US 48752621 A US48752621 A US 48752621A US 1499230 A US1499230 A US 1499230A
- Authority
- US
- United States
- Prior art keywords
- indirect
- layers
- photography
- tricolor
- photographic plates
- 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
- 238000000034 method Methods 0.000 title description 13
- 239000010408 film Substances 0.000 description 12
- 239000000839 emulsion Substances 0.000 description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 239000001828 Gelatine Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229920002160 Celluloid Polymers 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/20—Subtractive colour processes using differently sensitised films, each coated on its own base, e.g. bipacks, tripacks
Definitions
- the present invention difi'ers from the known method by the fact that three halogen silver emulsion layers sensitized for the three different spectral divisions, are superposed directly upon each other, and pressed into intimate contact to secure the layers together. The several layers are thus caused to lie upon one another without any intervening space,
- plates may be prepared which may be used like ordinary plates for any kind of apparatus or camera, even without the necessity of compensation of focal difference. It is possible by this invention to produce the three part images in a satisfactory manner by a single short exposureof the plate. It is immaterial upon what supports the layers are placed. It is preferred to prepare one emulsion upon glass, whilst the 40 other two emulsions are applied to very thin films.
- the films may consist of celluloid, collodion, coloured gelatine, mica, or any other suitable transparent or translucent body.
- Fig. 1 is a sectional view through a plate with the layers in position thereon.
- Fig. 1 is a view similar to Fig. 1, showing the use of filter layers.
- Fig. 2 is a View showing some of the layers partly separated.
- Fig. 3 is an elevation
- Fig. 4 is a side View of the means for presslng the films together.
- the thin films are placed upon the lower silver bromide plate, the intimate contact between the plates being produced by forcmg the layers into intimate contact.
- a suitable mode' of working is the following:- The films are made somewhat larger than the glass plate a; the emulsion side of the plate is wetted at the edge all round. The first film b is then placed upon the plate with the emulsion side upwards, and the film together with the plate are then pressed against one another by one or more spring actuated or yielding rubber rollers or the like which express the air between the layers which are to be brought together.
- rollers f, f are movably and rotatably mounted in the standards 6, c, through blocks 9, springs It being provided to normally orce the rollers apart, and screws 2' providing an adjustment for obtaining the necessary pressure of the rollers on the films a passing therethrough, and being forced into intimate contact.
- a handle is mounted on one of the extended ends of the lower roller shaft provides the means for rotating the rollers and feeding the films that are pressed together through the machine.
- the second and third films b and c are then superposed in the samemanner, whereupon the plate is ready for taking.
- the lower emulsion film b which may be carried by the glass (1, is a highly sensitive silver bromid emulsion sensitized for red rays; upon it lies a film c sensitized for yellow, green and blue rays, whilst the uppermost film d is sensitive to blue only.
- the filter layers such as c and (1 should any be required are placed upon the rear sides of the respective emulsion carriers as a and d,
- a plate made according to the present method is characterized by the fact that the layers are prepared separately and superposed upon each other and pressed into intimate contact. Such a method is considered to be much safer, to involve less Waste, and to b more suitable for production on a large scale. It also has the advantage that the further treatment and development of the individual part views can be carried out by the consumer in a very simple and convenient manner.
- I claim i A method of producing plates for indirect tri-color photography consisting in preparing separately three halogen silver emulsion layers sensitized for the difierent spectral divisions, and superposing the layers directly upon each other and forcing said layers into such intmate contact as to exclude the air between them.
- a method of producing plates for indirect tri-color photography consisting in preparing separately three halogen silver emulsion layers sensitized for the difierent spectral divisions, s uperposing the layers directly upon each other, and in joining the layersby the pressure of spring-actuated rollers for forcing the layers into intimate contact.
- a method of producing plates for indirect tri-color photography consisting in preparing separately thredhalogen-silveremuh sion layers sensitized for the difi'erent spece tral divisions, superposing the layers directly upon each other and in joining the.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
June .24, 1924., 1.499330 E. A. LAGE METHOD OF PRODUCING PHOTOGRAPHIC PLATES FOR INDIRECT TRIQOIQOR PHOTOGRAPHY 2 Sheets-Sfiet 1 Filed July 251 192] June 24 1924..
E. A. LAGE METHOD OF PRODUCING PHOTOGRAPHIC PLATES FOR INDIRECT TRICOLOR PHOTOGRAPHY Fil J ly 25. 4921 2 Sheets-Sheet 2 atented June 24, 1924.
UNI ED-STATES PATENT OFFICE.
ERNST AIUGUST LAGE, OF HAMBURG, GERMANY.
METHOD OF PRODUCING PHOTOGRAPHIC PLATES FOR INDIRECT TBIOOLOB PHOTOGRAPHY.
Application filed July 25,
(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L, 1313.)
To all whom it may concern:
Be it known that I, ERNST AUGUST I'JA GE, a citizen of the German Republic, residing at Hamburg, Germany, have invented certain new and useful Improvements in Methods of Producing Photographic Plates for Indirect Tricolor Photography (for which I have filed applications in Germany, Feb. 7 1914; Great Britain, Mar. 19, 1921; 10 France, Mar. 11, 1921; Switzerland, Mar.
14, 1921; Belgium, May 4, 1921; Netherlands, Mar. 8, 1921), of which the following is a specification.
It has been proposed to produce part negatives for indirect tri-color photography by superposing three layers. The present invention difi'ers from the known method by the fact that three halogen silver emulsion layers sensitized for the three different spectral divisions, are superposed directly upon each other, and pressed into intimate contact to secure the layers together. The several layers are thus caused to lie upon one another without any intervening space,
and owing to this direct contact the inac-- curacy or lack or sharpness otherwise due to the dispersion and refraction of the light rays in intermediate air spaces, are avolded. By the improved method plates may be prepared which may be used like ordinary plates for any kind of apparatus or camera, even without the necessity of compensation of focal difference. It is possible by this invention to produce the three part images in a satisfactory manner by a single short exposureof the plate. It is immaterial upon what supports the layers are placed. It is preferred to prepare one emulsion upon glass, whilst the 40 other two emulsions are applied to very thin films. The films may consist of celluloid, collodion, coloured gelatine, mica, or any other suitable transparent or translucent body. 4 In the accompanying drawing:
Fig. 1 is a sectional view through a plate with the layers in position thereon.
Fig. 1 is a view similar to Fig. 1, showing the use of filter layers. Fig. 2 is a View showing some of the layers partly separated.
Fig. 3 is an elevation, and
Fig. 4 is a side View of the means for presslng the films together.
In carrying out the improved method the thin films are placed upon the lower silver bromide plate, the intimate contact between the plates being produced by forcmg the layers into intimate contact. A suitable mode' of working is the following:- The films are made somewhat larger than the glass plate a; the emulsion side of the plate is wetted at the edge all round. The first film b is then placed upon the plate with the emulsion side upwards, and the film together with the plate are then pressed against one another by one or more spring actuated or yielding rubber rollers or the like which express the air between the layers which are to be brought together. The rollers f, f, are movably and rotatably mounted in the standards 6, c, through blocks 9, springs It being provided to normally orce the rollers apart, and screws 2' providing an adjustment for obtaining the necessary pressure of the rollers on the films a passing therethrough, and being forced into intimate contact. A handle is mounted on one of the extended ends of the lower roller shaft provides the means for rotating the rollers and feeding the films that are pressed together through the machine. The second and third films b and c are then superposed in the samemanner, whereupon the plate is ready for taking.
The lower emulsion film b which may be carried by the glass (1, is a highly sensitive silver bromid emulsion sensitized for red rays; upon it lies a film c sensitized for yellow, green and blue rays, whilst the uppermost film d is sensitive to blue only. The filter layers such as c and (1 should any be required are placed upon the rear sides of the respective emulsion carriers as a and d,
preferably in the form of easily washed out color layers of gelatine or the like.- I
In order to develop the plate it is sulficient to make a slight incision upon the layer side along the edge. The several films then easily separate, and may be developed and treated in the usual manner.
As compared with multi-layer photographic plates in which two or more sensitive layers are cast upon a common support,
a plate made according to the present method is characterized by the fact that the layers are prepared separately and superposed upon each other and pressed into intimate contact. Such a method is considered to be much safer, to involve less Waste, and to b more suitable for production on a large scale. It also has the advantage that the further treatment and development of the individual part views can be carried out by the consumer in a very simple and convenient manner.
I claim i 1. A method of producing plates for indirect tri-color photography consisting in preparing separately three halogen silver emulsion layers sensitized for the difierent spectral divisions, and superposing the layers directly upon each other and forcing said layers into such intmate contact as to exclude the air between them.
2. A method of producing plates for indirect tri-color photography consisting in preparing separately three halogen silver emulsion layers sensitized for the difierent spectral divisions, s uperposing the layers directly upon each other, and in joining the layersby the pressure of spring-actuated rollers for forcing the layers into intimate contact. p
3. A method of producing plates for indirect tri-color photography consisting in preparing separately thredhalogen-silveremuh sion layers sensitized for the difi'erent spece tral divisions, superposing the layers directly upon each other and in joining the.
In testimony whereof I aflix my signature in presence of two witnesses.
ERNST AUGUST LAGE.
Witnesses:
FRIEDRICH JULIUS Gonms, I. Cmnsrr Srnrnnmms.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US487526A US1499230A (en) | 1921-07-25 | 1921-07-25 | Method of producing photographic plates for indirect tricolor photography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US487526A US1499230A (en) | 1921-07-25 | 1921-07-25 | Method of producing photographic plates for indirect tricolor photography |
Publications (1)
Publication Number | Publication Date |
---|---|
US1499230A true US1499230A (en) | 1924-06-24 |
Family
ID=23936087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US487526A Expired - Lifetime US1499230A (en) | 1921-07-25 | 1921-07-25 | Method of producing photographic plates for indirect tricolor photography |
Country Status (1)
Country | Link |
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US (1) | US1499230A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2596677A (en) * | 1947-12-06 | 1952-05-13 | Eastman Kodak Co | Method for making masks for photographic transparencies |
US2665986A (en) * | 1939-11-02 | 1954-01-12 | Gevaert Photo Prod Nv | Process of producing colored reversal images |
US3053659A (en) * | 1958-05-12 | 1962-09-11 | Polaroid Corp | Photographic film unit with processing container |
US3144333A (en) * | 1961-01-06 | 1964-08-11 | Robert R Waldherr | Photographic color film and the method of use in color printing |
US3202509A (en) * | 1959-12-24 | 1965-08-24 | Int Standard Electric Corp | Color photoengraving techniques for producing conductor devices |
-
1921
- 1921-07-25 US US487526A patent/US1499230A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2665986A (en) * | 1939-11-02 | 1954-01-12 | Gevaert Photo Prod Nv | Process of producing colored reversal images |
US2596677A (en) * | 1947-12-06 | 1952-05-13 | Eastman Kodak Co | Method for making masks for photographic transparencies |
US3053659A (en) * | 1958-05-12 | 1962-09-11 | Polaroid Corp | Photographic film unit with processing container |
US3202509A (en) * | 1959-12-24 | 1965-08-24 | Int Standard Electric Corp | Color photoengraving techniques for producing conductor devices |
US3144333A (en) * | 1961-01-06 | 1964-08-11 | Robert R Waldherr | Photographic color film and the method of use in color printing |
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