US1943169A - Process of making film-supports for color photography - Google Patents
Process of making film-supports for color photography Download PDFInfo
- Publication number
- US1943169A US1943169A US401623A US40162329A US1943169A US 1943169 A US1943169 A US 1943169A US 401623 A US401623 A US 401623A US 40162329 A US40162329 A US 40162329A US 1943169 A US1943169 A US 1943169A
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- US
- United States
- Prior art keywords
- casting
- roller
- wire
- support
- making
- 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 6
- 238000005266 casting Methods 0.000 description 36
- 238000004804 winding Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000000084 colloidal system Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001479434 Agfa Species 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 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
- G03C7/14—Additive processes using lenticular screens; Materials therefor; Preparing or processing such materials
Definitions
- the present invention relates to a process of making film supports having linear semi-cylindrical light refracting elements. More particularly it relates to a method of forming these elements after a model in form of a roller which is wound closely and uniformly with a thin wireshaped body.
- linear gratings of semicylindri al light refracting elements may be produced on films without the aid of engraved rollers by employing as model a roller of metal, glass or other suitable material and preferably polished, which is wound closely and uniformly with thin wire.
- a suitable wire should be -60 a in diameter and the winding should have about 16-25 turns per millimeter, so as to produce the required cylindrical lines on the film.
- any other material having a suitable cross section I may be used.
- the roller thus wound with wire may be used in various ways for producing a lined grating on the film.
- the roller wound with wire as explained, or a duplicate f it, made by casting or by a galvano-plastic method or in any other manner, is rolled upon the casting surface of the known machine for casting the film, so as to produce on this surface an imprint of the wire winding.
- the casting surface is of metal, the material constituting the wire winding or the duplicate aforesaid must be harder than the material of the casting surface.
- nickel may be used and for the winding steel wire.
- the casting surface may be a layer of suitable colloid material, for instance a cellulose derivative, in which case the wire winding may be of material softer than steel.
- the colloid layer must be made plastic by heating it or by treating it with a suitable liquid before the rol ing operation.
- the casting surface thus provided with an impression of the wire winding now receives the celluloid dope or the like which is to be cast in the form of a band.
- the film thus produced has on its surface the required relief.
- FIG. 1 is a top plan view of the film casting support and Fig. 2 is a sectional view through the casting support. It is obviously impossible to show the details on the casting surface in any way near the proper scale. Therefore, the impressions of the wires on the casting surface are magnified many hundreds of times in scale, in order to more clearly point out the invention.
- the casting support 1 bears on its surface 2 an immense number of linear impressions 3 of semi-cylindrical form.
- the individual semi-cylindrical lined elements According to the diameter of the wires used for impressing the negatives of the wire windings, the individual semi-cylindrical lined elements have a diameter of l0 to ,u, and 2516 of them are accumulated per millimeter.
- the wire roller When the lined grating is to be produced on the cast film either before or after the latter has been coated with emulsion, the wire roller must first be used to make a second roller with a negative profile. This can be done, for instance, by rolling the first roller on a second roller which is of a material softer than the wire winding, or a negative of the wire roller may be produced electrolytically. In the latter case the wire may be wound on a roller of easily destroyable material, such as glass, and then electrolytically coppered in order to unite the turns of the wire firmly together; the glass roller can then be smashed and the pieces removed, whereby there is produced a hollow cylinder having the wire winding on its inner surface.
- This cylinder serves as a mould for producing a roller having a negative profile; for instance, the cylinder may be filled with metal or a strong metal layer may be produced on the inner surface by electrolysis. From the negative roller thus produced it is obvious that copies may be made and used for engraving.
- a rollerhaving a negative profile may also be made by pressing the wire wound roller against another, smooth roller, so that on the periphery of the wire-bearing roller, there is produced an impression of the wire winding, and then removing the wire.
- the material of the wire must be harder than that of the roller on which it is wound.
- a counterpart of the Wire winding of the roller may be produced by filling the space between the wire and the roller with a suitable material which unites firmly with the surface of the roller.
- roller obtained in any of the manners described may be used to impress the finished film after the latter has been heated or treated with a suitable liquid to make it sufficiently plastic.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support by means of a roller provided with a relief formed by elements having a cylindrical curvature, thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support by means of a roller provided with a coil of wire, thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support by means of a roller provided with a coil of wire of a diameter of to thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of nickel by means of a roller provided with a coil of steelwire of a diameter of 40 to 60 IL, thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a colloid layer superficially made plastic by means of a roller provided with a coil of steel-wire of a diameter to 40 to 60 lb, thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a colloid layer superficially made plastic by heating, by means of a roller provided with a coil of steel-wire of a diameter of 40 to 60 ,lL, thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a colloid layer superficially made plastic by a suitable liquid, by means of a roller provided with a coil of steel-wire of a diameter of 40 to 60 11., thus producing parallel grooves forming a lined grating.
- a method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a cellulose derivative superficially made plastic by a suitable liquid by means of a roller provided with a coil of steel-wire of a diameter of 40 to 60 i, thus producing parallel grooves forming a lined grating.
- a support for casting lenticular films having a surface provided with parallel grooves of cylindrical curvature forming a lined grating.
- a support for casting lenticular films having a surface provided with parallel grooves of cylindrical curvature, the corresponding cylinder having a diameter of 40 to 60 [.L, said grooves forming a lined grating.
- a support for casting lenticular films comprising a colloid layer having a surface provided with parallel grooves of cylindrical curvature said grooves forming a lined grating.
- a support for casting lenticular films comprising a cellulose derivative layer having a surface provided with parallel grooves of cylindrical curvature said grooves forming a lined grating.
- a method of making a support for casting 105 lenticular films which comprises producing on the surface of the casting support parallel grooves having a cylindrical curvature and forming a lined grating.
Description
Jan. 9, 1934. .1. EGGERT ET AL 1,943,159
PROCESS OF MAKING FILM SUPPORTS FOR COLOR PHOTOGRAPHY Filed Oct. 22, 1929 Patented Jan. 9, 1934 PATENT FFICE I PROCESS MAKING FILM-SUPPORTS FOR COLOR PHOTOGRAPHY John Eggert, Leipzig, and Gerd Heymer, Dessau, Germany, assignors to Agfa Ansco Corporation, Binghamton, N. Y., a corporation of New York Application October 22,
1929, Serial No. 401,623,
and in Germany October 23, 1928 13 Claims.
The present invention relates to a process of making film supports having linear semi-cylindrical light refracting elements. More particularly it relates to a method of forming these elements after a model in form of a roller which is wound closely and uniformly with a thin wireshaped body.
We have found that linear gratings of semicylindri al light refracting elements may be produced on films without the aid of engraved rollers by employing as model a roller of metal, glass or other suitable material and preferably polished, which is wound closely and uniformly with thin wire. A suitable wire should be -60 a in diameter and the winding should have about 16-25 turns per millimeter, so as to produce the required cylindrical lines on the film. Instead of a wire, any other material having a suitable cross section I may be used.
The roller thus wound with wire may be used in various ways for producing a lined grating on the film.
If the film is to be provided with the lined grating in the course of its manufacture, the roller, wound with wire as explained, or a duplicate f it, made by casting or by a galvano-plastic method or in any other manner, is rolled upon the casting surface of the known machine for casting the film, so as to produce on this surface an imprint of the wire winding. When the casting surface is of metal, the material constituting the wire winding or the duplicate aforesaid must be harder than the material of the casting surface. For a casting surface, nickel may be used and for the winding steel wire. On the other hand, the casting surface may be a layer of suitable colloid material, for instance a cellulose derivative, in which case the wire winding may be of material softer than steel. In this case the colloid layer must be made plastic by heating it or by treating it with a suitable liquid before the rol ing operation. The casting surface thus provided with an impression of the wire winding now receives the celluloid dope or the like which is to be cast in the form of a band. The film thus produced has on its surface the required relief.
A casting surface prepared according to our invention, is illustrated in the accompanying drawing, in which Fig. 1 is a top plan view of the film casting support and Fig. 2 is a sectional view through the casting support. It is obviously impossible to show the details on the casting surface in any way near the proper scale. Therefore, the impressions of the wires on the casting surface are magnified many hundreds of times in scale, in order to more clearly point out the invention.
As seen from Figs. 1 and 2, the casting support 1 bears on its surface 2 an immense number of linear impressions 3 of semi-cylindrical form. According to the diameter of the wires used for impressing the negatives of the wire windings, the individual semi-cylindrical lined elements have a diameter of l0 to ,u, and 2516 of them are accumulated per millimeter.
When the lined grating is to be produced on the cast film either before or after the latter has been coated with emulsion, the wire roller must first be used to make a second roller with a negative profile. This can be done, for instance, by rolling the first roller on a second roller which is of a material softer than the wire winding, or a negative of the wire roller may be produced electrolytically. In the latter case the wire may be wound on a roller of easily destroyable material, such as glass, and then electrolytically coppered in order to unite the turns of the wire firmly together; the glass roller can then be smashed and the pieces removed, whereby there is produced a hollow cylinder having the wire winding on its inner surface. This cylinder serves as a mould for producing a roller having a negative profile; for instance, the cylinder may be filled with metal or a strong metal layer may be produced on the inner surface by electrolysis. From the negative roller thus produced it is obvious that copies may be made and used for engraving.
A rollerhaving a negative profile may also be made by pressing the wire wound roller against another, smooth roller, so that on the periphery of the wire-bearing roller, there is produced an impression of the wire winding, and then removing the wire. In this case it is obvious that the material of the wire must be harder than that of the roller on which it is wound. Finally, a counterpart of the Wire winding of the roller may be produced by filling the space between the wire and the roller with a suitable material which unites firmly with the surface of the roller.
The roller obtained in any of the manners described may be used to impress the finished film after the latter has been heated or treated with a suitable liquid to make it sufficiently plastic.
We claim:
1. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support by means of a roller provided with a relief formed by elements having a cylindrical curvature, thus producing parallel grooves forming a lined grating.
2. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support by means of a roller provided with a coil of wire, thus producing parallel grooves forming a lined grating.
3. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support by means of a roller provided with a coil of wire of a diameter of to thus producing parallel grooves forming a lined grating.
4. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of nickel by means of a roller provided with a coil of steelwire of a diameter of 40 to 60 IL, thus producing parallel grooves forming a lined grating.
5. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a colloid layer superficially made plastic by means of a roller provided with a coil of steel-wire of a diameter to 40 to 60 lb, thus producing parallel grooves forming a lined grating.
6. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a colloid layer superficially made plastic by heating, by means of a roller provided with a coil of steel-wire of a diameter of 40 to 60 ,lL, thus producing parallel grooves forming a lined grating.
7. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a colloid layer superficially made plastic by a suitable liquid, by means of a roller provided with a coil of steel-wire of a diameter of 40 to 60 11., thus producing parallel grooves forming a lined grating.
8. A method of making a support for casting lenticular films which comprises impressing the surface of the casting support consisting of a cellulose derivative superficially made plastic by a suitable liquid by means of a roller provided with a coil of steel-wire of a diameter of 40 to 60 i, thus producing parallel grooves forming a lined grating.
9. A support for casting lenticular films having a surface provided with parallel grooves of cylindrical curvature forming a lined grating.
10. A support for casting lenticular films having a surface provided with parallel grooves of cylindrical curvature, the corresponding cylinder having a diameter of 40 to 60 [.L, said grooves forming a lined grating.
11. A support for casting lenticular films comprising a colloid layer having a surface provided with parallel grooves of cylindrical curvature said grooves forming a lined grating.
12. A support for casting lenticular films comprising a cellulose derivative layer having a surface provided with parallel grooves of cylindrical curvature said grooves forming a lined grating.
13. A method of making a support for casting 105 lenticular films which comprises producing on the surface of the casting support parallel grooves having a cylindrical curvature and forming a lined grating.
JOHN EGGERT. GERD HEYMER.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1943169X | 1928-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1943169A true US1943169A (en) | 1934-01-09 |
Family
ID=7750589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US401623A Expired - Lifetime US1943169A (en) | 1928-10-23 | 1929-10-22 | Process of making film-supports for color photography |
Country Status (1)
Country | Link |
---|---|
US (1) | US1943169A (en) |
-
1929
- 1929-10-22 US US401623A patent/US1943169A/en not_active Expired - Lifetime
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