US624837A - Victor mathietj and felix dery - Google Patents
Victor mathietj and felix dery Download PDFInfo
- Publication number
- US624837A US624837A US624837DA US624837A US 624837 A US624837 A US 624837A US 624837D A US624837D A US 624837DA US 624837 A US624837 A US 624837A
- Authority
- US
- United States
- Prior art keywords
- dery
- felix
- victor
- mathietj
- paper
- 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
- 108010010803 Gelatin Proteins 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N Silver nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 229920000159 gelatin Polymers 0.000 description 4
- 239000008273 gelatin Substances 0.000 description 4
- 235000019322 gelatine Nutrition 0.000 description 4
- 235000011852 gelatine desserts Nutrition 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000001235 sensitizing Effects 0.000 description 2
- 231100000202 sensitizing Toxicity 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
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
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/492—Photosoluble emulsions
Definitions
- This invention has relation to the produc tion or manufacture of sensitized paper for chromatic photography; and it consists in amethod of producing or making this paper and imparting to it the properties indispensable to the uses made thereof.
- the sensitized paper used in polychromatic photography and the constitution of the prints reproducing all the colors in nature are of the class called carbon-papers and are sensitized and printed in substantially the same manner.
- carbon-papers the class called carbon-papers and are sensitized and printed in substantially the same manner.
- the printing of a monochromatic picture or image there is a certain elasticity or range in the exposure, and consequently in the tone of the print. This is not the case in printing from three films which by their superposition are to produce a polychromatic picture or image.
- the tones or tints must be produced in the same exact proportions in which they are found in the original, and in the practical reproduction of pictures requiring such exactitude a speciallyprepared paper becomes indispensablein order that all errors or inexactitude in printing may be avoided.
- the paper used by us does not difier from the so-called, carbon-papers, except in that the selected colors-yellow, blue, and red-are substituted for the carbon in the emulsion, which colors, by their combination, are to compose the polychromatic picture.
- the process consists, essentially, in the'use of the provisional support itself for the mixture as a photometer in order to insure the rigorously exact reproduction.
- the colored tints being relatively clear ortransparent, it is possible to observe the image forming on the sensitized support as it darkens thereon,
Description
UNITED. STATES PATENT OFFICE.
VICTOR MATHIEU AND FELIX DERY, OF PARIS, FRANCE.-
SENSI TIZED PHOTOGRAPHIC PAPER AND PROCESS OF MAKING SAME.
SPECIFICATION forming part Of Letters Patent NO. 624,837, dated May 9, 1899.
Application filed January 31, 1899. Serial N0: 704,043. (No s ecimens.) I
have invented certaiunew and useful Improvements in Methods of Preparing Sensitized Paper for Polychromatic Photography; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention has relation to the produc tion or manufacture of sensitized paper for chromatic photography; and it consists in amethod of producing or making this paper and imparting to it the properties indispensable to the uses made thereof.
- The sensitized paper used in polychromatic photography and the constitution of the prints reproducing all the colors in nature are of the class called carbon-papers and are sensitized and printed in substantially the same manner. However,in the printing of a monochromatic picture or image there is a certain elasticity or range in the exposure, and consequently in the tone of the print. This is not the case in printing from three films which by their superposition are to produce a polychromatic picture or image. The tones or tints must be produced in the same exact proportions in which they are found in the original, and in the practical reproduction of pictures requiring such exactitude a speciallyprepared paper becomes indispensablein order that all errors or inexactitude in printing may be avoided. The paper used by us does not difier from the so-called, carbon-papers, except in that the selected colors-yellow, blue, and red-are substituted for the carbon in the emulsion, which colors, by their combination, are to compose the polychromatic picture.
The process consists, essentially, in the'use of the provisional support itself for the mixture as a photometer in order to insure the rigorously exact reproduction. The colored tints being relatively clear ortransparent, it is possible to observe the image forming on the sensitized support as it darkens thereon,
which darkening takes place at the same time and proportionately to the action of the light upon the bichromated gelatin. It is therefore possible to follow the developmentof the image or picture and arrest its further development when of the required intensity. This being understood, we will describe the mode of preparing the paper. I
We first sensitize the paper with silver nitrate, then dry it, and coat it with a bichromated gelatin of the desired color in the usual manner.
Having thus described our invention, what We claim as new therein,and desire to secure by Letters Patent, is-' 1. The process-of making sensitized paper for polychromatic photography, which consists in sensitizing the paper with silver ni- Witnesses:
TRISTAN Gossn DE SERLAY, HENRI RACLOT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US624837A true US624837A (en) | 1899-05-09 |
Family
ID=2693440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US624837D Expired - Lifetime US624837A (en) | Victor mathietj and felix dery |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US624837A (en) |
-
0
- US US624837D patent/US624837A/en not_active Expired - Lifetime
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