US2208754A - Multipack photography - Google Patents
Multipack photography Download PDFInfo
- Publication number
- US2208754A US2208754A US53872A US5387235A US2208754A US 2208754 A US2208754 A US 2208754A US 53872 A US53872 A US 53872A US 5387235 A US5387235 A US 5387235A US 2208754 A US2208754 A US 2208754A
- Authority
- US
- United States
- Prior art keywords
- multipack
- photography
- emulsion
- layers
- sensitive
- 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
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/147—Lenticular
Definitions
- This invention relates to multipack photography.
- a yellow or red filter in some suitable form, for instance, as an intermediate separate iilm or as a colored coating on the emulsion side or the opposite side of the support, or the carrier itself may be colored.
- the emulsion layers behind this filter are thus sensitized for corresponding kinds of light.
- the light filters consisting of separate films or layers interposed in the pack have the disadvantage that the distance between the several emulsion layers is increased, so that the rear pictures produced are not so sharp as the remainder.
- the colored support does not present this drawback but the support cannot subsequently be decolorized and therefore renders the picture unsuitable for copying.
- a fine-grained emulsion rich in silver, which is differently sensitized for each layer, so as to produce the desired color separation. It being a'dvantageous to damp the specific blue sensitivity of the emulsion by the known method of directly dyeing the emulsion with a screening dye, for instance, a yellow dyestui.
- the grain of the emulsion layers in the multipack should not exceed a mean value of la diameter and the ratio of silver to gelatin should be at least l part of silver ony 1,5 parts of gelatin the partsV being by weight.
- the material made by the invention is therefore without any colored layer between the emuldifferent spectral ranges; this is a, substantial simplication in the manufacture and leads to improved sharpness in the rear picture.
- the invention is applicable forV all tripack arrangements; advantageously it is combined with. the invention de-l scribed in U. S. patent application Serial4 No. 48,337, which deals with the'production of pictorial swollen reliefs from thin, extremely highly hardened layers of emulsion.
- the blue sensitive film is preferably arranged next the source of light, whereas the films sensitive to green and red may follow in optional manner.
- the invention is also useful in the production of the two-pack lenticular lm described in U. S.
- PatentNo. l1,968,944 In this case the resolution into the fundamental colors is produced in part by the iilter and screen and. in part by a spectral method with the advof diiferently colored and sensitized layers.
- the use of iinelygrained layers rich in silver makes it unnecessary in this case to introduce a red filter layer as has hitherto 'been usual, whereby, moreover, the assistance of the two-Zone lter arrangement in front of the objective still favours the sharp separation between the red and green details.r
- Fig. 1 of the accompanying drawing shows a tripack consisting of three normal films, I. 2 and 3.
- the front film I is sensitive to' blue
- the middle film 2 is sensitive to green
- the back lm is sensitive to red
- Fig. 2 shows a lenticular bipack in which the lenticular front lm l is sensitive to blue and green, and the smooth back lm 2 is sensitive to red.
- a combination of a multipack consisting of' a lenticular film in contact with a smooth lmv and not being separated by any filter layers, each vlm consisting of a support coated with a silver halide gelatin emulsion layer having a grain size not exceeding a mean value of la diameter, the
- ratio of silver to gelatin being at least l part of silver on 1.5 parts of gelatin, the parts bein'gby weight, and the .two emulsion layers being sensitized to different spectral regions.
Description
AJuly 23, 1940.
J. EGGERT ET AL MULTIPACK PHOTOGRAPHY Filed Dec. ll, 1935 fo/zn Eggert Amaai mm Bz'ehr Gerd Hfeymer By /zeir Aharneys l Patented July 23, 1940 MULTIPACK PHOTOGRAPHY John Eggert, Leipzig-Gohlis, Arpad von Bichler,
Dessau,
and Gerd Heymer, Wolfen Kreis Bitterfeld, Germany, assignors, by mesne yassignments. to.Genera'l Aniline & Film Corporation, New York, N. Y., a corporation of Dela- Ware Application December 11, 1935, Serial No. 53,872
In Germany December 13, 1934 1 Claim. This invention relates to multipack photography.
' sion layers sensitized for One of its objects is a multipack with which sharper pictures are obtainable than hitherto usual. Further objects will be seen from the detailed specification following hereafter.` Reference is made to the accompanying drawing in which Fig. l shows a tripack of normal film and Fig. 2 shows a lenticular bipack in accordance with the invention.
In the production of multicolor pictures by means of the usual biand tripacks, there is placed in front of the second and third layer, respectively, in thepack a yellow or red filter in some suitable form, for instance, as an intermediate separate iilm or as a colored coating on the emulsion side or the opposite side of the support, or the carrier itself may be colored. The emulsion layers behind this filter are thus sensitized for corresponding kinds of light. The light filters consisting of separate films or layers interposed in the pack have the disadvantage that the distance between the several emulsion layers is increased, so that the rear pictures produced are not so sharp as the remainder. The colored support does not present this drawback but the support cannot subsequently be decolorized and therefore renders the picture unsuitable for copying. i
According to this invention there is used a fine-grained emulsion, rich in silver, which is differently sensitized for each layer, so as to produce the desired color separation. it being a'dvantageous to damp the specific blue sensitivity of the emulsion by the known method of directly dyeing the emulsion with a screening dye, for instance, a yellow dyestui. The grain of the emulsion layers in the multipack should not exceed a mean value of la diameter and the ratio of silver to gelatin should be at least l part of silver ony 1,5 parts of gelatin the partsV being by weight.
The material made by the invention is therefore without any colored layer between the emuldifferent spectral ranges; this is a, substantial simplication in the manufacture and leads to improved sharpness in the rear picture. The invention is applicable forV all tripack arrangements; advantageously it is combined with. the invention de-l scribed in U. S. patent application Serial4 No. 48,337, which deals with the'production of pictorial swollen reliefs from thin, extremely highly hardened layers of emulsion. In the tripack according to this invention the blue sensitive film is preferably arranged next the source of light, whereas the films sensitive to green and red may follow in optional manner.
The invention is also useful in the production of the two-pack lenticular lm described in U. S.
PatentNo. l1,968,944. In this case the resolution into the fundamental colors is produced in part by the iilter and screen and. in part by a spectral method with the advof diiferently colored and sensitized layers. The use of iinelygrained layers rich in silver makes it unnecessary in this case to introduce a red filter layer as has hitherto 'been usual, whereby, moreover, the assistance of the two-Zone lter arrangement in front of the objective still favours the sharp separation between the red and green details.r
In this manner there is obtained a separation of the fundamental colors which is better than when filters or sensitizers are used alone.
Fig. 1 of the accompanying drawing shows a tripack consisting of three normal films, I. 2 and 3. The front film I is sensitive to' blue, the middle film 2 is sensitive to green and the back lm is sensitive to red. Fig. 2 shows a lenticular bipack in which the lenticular front lm l is sensitive to blue and green, and the smooth back lm 2 is sensitive to red.
What we claim is:
A combination of a multipack consisting of' a lenticular film in contact with a smooth lmv and not being separated by any filter layers, each vlm consisting of a support coated with a silver halide gelatin emulsion layer having a grain size not exceeding a mean value of la diameter, the
ratio of silver to gelatin being at least l part of silver on 1.5 parts of gelatin, the parts bein'gby weight, and the .two emulsion layers being sensitized to different spectral regions.
l JOHN EGGERT.
ARPA'D von BIEHLER. GERD HEYMER..
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI0051206 | 1934-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2208754A true US2208754A (en) | 1940-07-23 |
Family
ID=7193022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US53872A Expired - Lifetime US2208754A (en) | 1934-12-13 | 1935-12-11 | Multipack photography |
Country Status (2)
Country | Link |
---|---|
US (1) | US2208754A (en) |
FR (1) | FR798743A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2944894A (en) * | 1955-09-28 | 1960-07-12 | Polaroid Corp | Photographic processes utilizing screen members |
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 |
US6632355B2 (en) | 2001-07-30 | 2003-10-14 | Pentapure Incorporated | Low spillage replaceable water filter assembly |
US20050103697A1 (en) * | 1996-08-08 | 2005-05-19 | Magnusson Jan H. | Dripless purification manifold and cartridge |
US7837876B2 (en) | 2004-10-28 | 2010-11-23 | Paragon Water Systems, Inc. | Water purifying apparatuses |
-
1935
- 1935-12-05 FR FR798743D patent/FR798743A/en not_active Expired
- 1935-12-11 US US53872A patent/US2208754A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2944894A (en) * | 1955-09-28 | 1960-07-12 | Polaroid Corp | Photographic processes utilizing screen members |
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 |
US20050103697A1 (en) * | 1996-08-08 | 2005-05-19 | Magnusson Jan H. | Dripless purification manifold and cartridge |
US20060124532A1 (en) * | 1996-08-08 | 2006-06-15 | Magnusson Jan H | Dripless purification manifold and cartridge |
US6632355B2 (en) | 2001-07-30 | 2003-10-14 | Pentapure Incorporated | Low spillage replaceable water filter assembly |
US20030217959A1 (en) * | 2001-07-30 | 2003-11-27 | Pentapure Incorporated | Low spillage replaceable water filter assembly |
US20060272995A1 (en) * | 2001-07-30 | 2006-12-07 | 3M Innovative Properties Company | Low spillage replaceable water filter assembly |
US7147772B2 (en) | 2001-07-30 | 2006-12-12 | 3M Innovative Properties Company | Low spillage replaceable water filter assembly |
US7837876B2 (en) | 2004-10-28 | 2010-11-23 | Paragon Water Systems, Inc. | Water purifying apparatuses |
Also Published As
Publication number | Publication date |
---|---|
FR798743A (en) | 1936-05-25 |
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