US2083675A - Photographic print-out material having a design thereon - Google Patents

Photographic print-out material having a design thereon Download PDF

Info

Publication number
US2083675A
US2083675A US33348A US3334835A US2083675A US 2083675 A US2083675 A US 2083675A US 33348 A US33348 A US 33348A US 3334835 A US3334835 A US 3334835A US 2083675 A US2083675 A US 2083675A
Authority
US
United States
Prior art keywords
design
light
sensitive
print
solution
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
Application number
US33348A
Inventor
Joseph C Ville
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US33348A priority Critical patent/US2083675A/en
Priority to DEK141166D priority patent/DE685465C/en
Application granted granted Critical
Publication of US2083675A publication Critical patent/US2083675A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/49—Print-out and photodevelopable emulsions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
    • G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
    • 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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/36—Desensitisers
    • 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
    • G03C11/00—Auxiliary processes in photography

Definitions

  • This invention relates to photography and more particularly to a sensitive paper on which the design becomes visible or invisible under the action 1 design on it with a solution of a desensitizer or a 3 of light.
  • highly sensitive printout paper may be used to indicate 'the action or the intensity of light by printing or forming a restrainer for the sensitive print-out compound.
  • Print-out emulsions Sensitive photographic emulsions in which a visible image is produced directly by the action of light are called print-out emulsions. They are ordinarily" prepared by precipitating a halide of silver in a colloidal medium by interaction of a solution of a soluble halide with a solution of a.
  • soluble compound of silver If the emulsion is sensitized with silver chloride, the silver chloride is usually precipitated in such a way that the final product contains an excess of soluble silver compound for example, silver nitrate, together with the silver salt of an organic acid and some of the free organic acid. These emulsions are not washed after the precipitation of the sensitive salt.
  • a highly sensitive print-out paper which is suitable for the process of my invention is described in Patent No. 2,030,860, granted February 18, 1936, to George E. Falleson and Cyril J. Stand.
  • FIG. 1 is a flowsheet showing a plan view of a sensitive printout paper having a design formed-thereon the same color as the unexposed surface before and after exposure;
  • Fig. 2 is a flow-sheet showing a plan view of a sensitive print-out paper having a designformed thereon of a color darker than that of the unexposed surface,- before exposure, after partial exposure, and after complete exposure.
  • I form a design 'on the surface of the sensitive print-out emulsion with a desensitizing or restraining compound. Under an action of light the sensitive portion of the print-out surface darkens and the portion treated with the desensitizer or restrainer is unaflfected'by the action of the light. I may include trim with the solution of the desensitizing or restraining compound-but this is only for the purpose or increasingor decreasing the contrast between the sensitive and desensitized portions of the surface" and is not absolutely-essentiaL.
  • thiourea and substituted thioureas are thiourea and substituted thioureas; other organic sulfur compounds; the thiosulfates, such as sodium thiosulfate and other alkaline thiosulfates; alkaline 1 exposed paper.
  • cyanides such as sodium cyanide
  • alkaline thiocyanates such as potassium thiocyanate
  • alkaline halides such as potassium iodide and potassium bromide.
  • a dye such as tartrazine or a mixture of tartrazine and malachite green.
  • the desensitizing solution may be made up as follows: 1
  • the solution of dye and desensitizeror restrainer is made up so that the solution when printed, or otherwise placed on the sensitive paper in the form of a design. the design resulting when the solution is dried has the same color as the sensitive surface.
  • my invention may be design and the background merge, and the design becomes invisible. On further exposure the background continues to darken and the design once more becomes visible and is then a lighter color than the background. Paper treated in this way can be used to measure light intensity. The length of time required for the background and design to merge is dependent on the intensity of the light and is an extremely accurate way of measuring light intensity. The intensity of light may be measured more accurately with such paper than by comparing the darkening of print-out paper with paper of a standard shade placed beside it. 1
  • the design portion 3 is formed from a solution containing a dye of a darker shade than the unexposed surface I.
  • the background portion I will darken in color and the design portion 3 will retain the same color so that after a short time, as shown at lb, the color of the background will be the same as that of the design, and the design and the background portions will appear to merge.
  • thebackground portion lb will further darken in color and there will again be a contrast between the background portion and the design portion of the paper as shown at lc. Because of the contrast between the design portion and the background portion, in the unexposed and overexposed condition, the intermediate exposure stage in which the design and the background portions merge is an extremely critical one and permits an accurate measurement of' the time of exposure.
  • restraining compounds I have referred to restraining and desensitizing compounds. It is to be understood that by restraining compounds" I mean those compounds which may not strictly be called dea sensitizers but which restrain the printing-out of the sensitive surface to such an extent that an image is formed very slowlyor not at all. It is evident, therefore, that desensitizers' are only powerful restrainers.
  • a light-sensitive silver salt print-out surface having a design formed thereon with a solution of a colored compound and a chemical restrainer for the printing out of the light-sensitive compound.
  • a light-sensitive silver salt print-out surface having a design formed thereon with a solution of a dye and a chemical restrainer for the printing-out of the light-sensitive compound.
  • a light-sensitive silver salt print-out paper having a design formed thereon with a solution of a dye and a chemical restrainer for the print ing out of the light-sensitive compound.
  • a light-sensitive silver salt print-out surface having a design formed thereon with a solution of a compound of the same color as the unexposed print-out surface and a chemical restrainer for the printing-out of the light-sensitive compound.
  • a light-sensitive silver salt print-out surface having a design formed thereon with a solution of a dye of the same color as the unexposed printout surface and a chemical restrainer for the printing-out of the light-sensitive compound.
  • the method of making a light-sensitive photographic material which comprises forming a design on alight-sensitive silver salt print-out surface with a solution of a dye of the same color as the unexposed print-out surface and a chemical restrainer for the printing-out of the lightsensi'tive compound.
  • the method of making a light-sensitive photographic material which comprises forming a design on a light-sensitive silver salt print-out surface with a solution of a dye of the same color as the unexposed print-out surface and thiourea.
  • the method of v making a light-sensitive photographic material which comprises forming a designon a light-sensitive silver salt print-out surface with a solution of a dye of the same color as the unexposed print-out surface and potassium iodide.
  • a light-sensitive silver salt print-out paper having a design formed thereon with a solution of a dye and a desensitizer for the light-sensitive compound.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Description

June 15, 1937. J. c. VILLE 8 PHOTOGRAP HIC f'RINT-OUT TERIAL HAVING A DESIGN T HEREON Filed July gs, 1955 PRINT-Our Z50 061761705 wi l? OLOR MCKMlI/YO v ATTORNEYS.
Patented June 15, 1937.
UNITED STATES PATENT OFFICE rno'rocnmrmc PRINT-OUT MATERIAL HAVING A DESIGN THEREON Joseph C. Ville, Rochester, N. Y., assignor, by
mesne assignments, to Eastman Kodak Company, Jersey City, N. 1., a corporation of New Jersey Application July 26, 1935, Serial No. 33,348
, I 14 Claims. This invention relates to photography and more particularly to a sensitive paper on which the design becomes visible or invisible under the action 1 design on it with a solution of a desensitizer or a 3 of light.
I have discovered that highly sensitive printout paper may be used to indicate 'the action or the intensity of light by printing or forming a restrainer for the sensitive print-out compound.
Sensitive photographic emulsions in which a visible image is produced directly by the action of light are called print-out emulsions. They are ordinarily" prepared by precipitating a halide of silver in a colloidal medium by interaction of a solution of a soluble halide with a solution of a.
soluble compound of silver. v If the emulsion is sensitized with silver chloride, the silver chloride is usually precipitated in such a way that the final product contains an excess of soluble silver compound for example, silver nitrate, together with the silver salt of an organic acid and some of the free organic acid. These emulsions are not washed after the precipitation of the sensitive salt. A highly sensitive print-out paper which is suitable for the process of my invention is described in Patent No. 2,030,860, granted February 18, 1936, to George E. Falleson and Cyril J. Stand.
In theaccompanying drawing Fig, 1 is a flowsheet showing a plan view of a sensitive printout paper having a design formed-thereon the same color as the unexposed surface before and after exposure; 1
Fig. 2 is a flow-sheet showing a plan view of a sensitive print-out paper having a designformed thereon of a color darker than that of the unexposed surface,- before exposure, after partial exposure, and after complete exposure.
' In carrying out myinvention I form a design 'on the surface of the sensitive print-out emulsion with a desensitizing or restraining compound. Under an action of light the sensitive portion of the print-out surface darkens and the portion treated with the desensitizer or restrainer is unaflfected'by the action of the light. I may include trim with the solution of the desensitizing or restraining compound-but this is only for the purpose or increasingor decreasing the contrast between the sensitive and desensitized portions of the surface" and is not absolutely-essentiaL.
Among the desensitizers or restrainers which are particularly useful in forming the design on the surface of the print-out emulsion, are thiourea and substituted thioureas; other organic sulfur compounds; the thiosulfates, such as sodium thiosulfate and other alkaline thiosulfates; alkaline 1 exposed paper.
cyanides, such as sodium cyanide; alkaline thiocyanates such as potassium thiocyanate; alkaline halides such as potassium iodide and potassium bromide. ample, a dye such as tartrazine or a mixture of tartrazine and malachite green. The desensitizing solution may be made up as follows: 1
Dye .1 gram *Potassium bromide saturated solution, 100 cc.
Water 20 cc. 3
Any suitable dye may be used, for ex- 1 In one aspect of my invention the solution of dye and desensitizeror restrainer is made up so that the solution when printed, or otherwise placed on the sensitive paper in the form of a design. the design resulting when the solution is dried has the same color as the sensitive surface.
This may be easily accomplished by selecting a dye of the same shade as the surface of the un- When this paper is exposed to light for a few seconds the sensitive portion darkens and the desensitized design portion retains the original color. The design thereby becomes visible under the action of light. The appearance of the design takes place in a few seconds in moderate daylight when highly sensitized print-out paper is used. If the paper is held at a distance of about one foot from a 60 watt Mazda lamp, the
' image is clearly visible in' about 20 seconds.
Another way in which my invention may be design and the background merge, and the design becomes invisible. On further exposure the background continues to darken and the design once more becomes visible and is then a lighter color than the background. Paper treated in this way can be used to measure light intensity. The length of time required for the background and design to merge is dependent on the intensity of the light and is an extremely accurate way of measuring light intensity. The intensity of light may be measured more accurately with such paper than by comparing the darkening of print-out paper with paper of a standard shade placed beside it. 1
, 2 retains its original color and is readily apparent by reason of the contrast in color between it and the exposed background portion la.
In the modification shown in Fig. 2, in which the paper is used to measure the intensity of light, the design portion 3 is formed from a solution containing a dye of a darker shade than the unexposed surface I. On exposure of this material to light, the background portion I will darken in color and the design portion 3 will retain the same color so that after a short time, as shown at lb, the color of the background will be the same as that of the design, and the design and the background portions will appear to merge. n continued exposure of this material to light thebackground portion lb will further darken in color and there will again be a contrast between the background portion and the design portion of the paper as shown at lc. Because of the contrast between the design portion and the background portion, in the unexposed and overexposed condition, the intermediate exposure stage in which the design and the background portions merge is an extremely critical one and permits an accurate measurement of' the time of exposure.
I have referred to restraining and desensitizing compounds. It is to be understood that by restraining compounds" I mean those compounds which may not strictly be called dea sensitizers but which restrain the printing-out of the sensitive surface to such an extent that an image is formed very slowlyor not at all. It is evident, therefore, that desensitizers' are only powerful restrainers.
Other advantages and ways of employing sensitive paper treated in accordance with my invention will be readily apparent. The modifications describedabove are by way of example only and it is to be understood that my invention is limited only by the scope of the appended claims.
What I claim is new and desire to secure by Letters Patent of the United States is:
1. A light-sensitive silver salt print-out surface having a design formed thereon with a solution of a colored compound and a chemical restrainer for the printing out of the light-sensitive compound.
2. A light-sensitive silver salt print-out surface having a design formed thereon with a solution of a dye and a chemical restrainer for the printing-out of the light-sensitive compound.
3. A light-sensitive silver salt print-out paper having a design formed thereon with a solution of a dye and a chemical restrainer for the print ing out of the light-sensitive compound.
4. A light-sensitive silver salt print-out surface having a design formed thereon with a solution of a compound of the same color as the unexposed print-out surface and a chemical restrainer for the printing-out of the light-sensitive compound.
5. A light-sensitive silver salt print-out surface having a design formed thereon with a solution of a dye of the same color as the unexposed printout surface and a chemical restrainer for the printing-out of the light-sensitive compound.
' 6. A light-sensitive silver salt print-out surface having a design formed thereon with a soluface having a design formed thereon with a solu tion of a compound of the same color as the unexposed print-out surface and potassium iodide.
10. The method of making a light-sensitive photographic material which comprises forming a design on alight-sensitive silver salt print-out surface with a solution of a dye of the same color as the unexposed print-out surface and a chemical restrainer for the printing-out of the lightsensi'tive compound.
11. The method of making a light-sensitive photographic material which comprises forming a design on a light-sensitive silver salt print-out surface with a solution of a dye of the same color as the unexposed print-out surface and thiourea.
12. The method of v making a light-sensitive photographic material which comprises forming a designon a light-sensitive silver salt print-out surface with a solution of a dye of the same color as the unexposed print-out surface and potassium iodide.
13. A light-sensitive silver salt print-out. surface having a design formed thereon with a solution of a colored compound and a desensitizer for the light-sensitive compound. a
14. A light-sensitive silver salt print-out paper having a design formed thereon with a solution of a dye and a desensitizer for the light-sensitive compound.
JOSEPH C. VII-LE.
US33348A 1935-07-26 1935-07-26 Photographic print-out material having a design thereon Expired - Lifetime US2083675A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US33348A US2083675A (en) 1935-07-26 1935-07-26 Photographic print-out material having a design thereon
DEK141166D DE685465C (en) 1935-07-26 1936-02-16 Actinometer paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33348A US2083675A (en) 1935-07-26 1935-07-26 Photographic print-out material having a design thereon

Publications (1)

Publication Number Publication Date
US2083675A true US2083675A (en) 1937-06-15

Family

ID=21869886

Family Applications (1)

Application Number Title Priority Date Filing Date
US33348A Expired - Lifetime US2083675A (en) 1935-07-26 1935-07-26 Photographic print-out material having a design thereon

Country Status (2)

Country Link
US (1) US2083675A (en)
DE (1) DE685465C (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553841A (en) * 1948-11-20 1951-05-22 Technicolor Motion Picture Cinematographic apparatus
US2710256A (en) * 1951-04-25 1955-06-07 Gen Aniline & Film Corp Photographic print-out process
US2733994A (en) * 1956-02-07 Method of photographic duplicating
US2930692A (en) * 1956-12-31 1960-03-29 Gen Aniline & Film Corp Stabilization of print-out emulsion images
US2949880A (en) * 1958-07-17 1960-08-23 Fromer Stephen Suntan control device
US3220841A (en) * 1962-01-12 1965-11-30 Eastman Kodak Co Photographic film
US4045227A (en) * 1972-08-04 1977-08-30 Fuji Photo Film Co., Ltd. Method for stabilizing silver halide photographic material
EP0487792A1 (en) * 1989-09-11 1992-06-03 Patent Innovations Limited Ultra-violet light detector
US6060321A (en) * 1997-07-11 2000-05-09 Hovorka; George B. Sun tan dosimeter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3242489A1 (en) * 1982-11-18 1984-06-20 Günter Dr. Gauglitz Reversible chemical actinometer
GB8700690D0 (en) * 1987-01-13 1987-02-18 Liquid Crystal Devices Ltd Sun heat radiation sensor
US5084623A (en) * 1990-02-09 1992-01-28 Isp Investments Inc. Radiation dosage indicator
EP0562201B1 (en) * 1992-03-23 1997-04-23 Nippon Telegraph And Telephone Corporation UV-A, UV-B discrimination sensor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733994A (en) * 1956-02-07 Method of photographic duplicating
US2553841A (en) * 1948-11-20 1951-05-22 Technicolor Motion Picture Cinematographic apparatus
US2710256A (en) * 1951-04-25 1955-06-07 Gen Aniline & Film Corp Photographic print-out process
US2930692A (en) * 1956-12-31 1960-03-29 Gen Aniline & Film Corp Stabilization of print-out emulsion images
US2949880A (en) * 1958-07-17 1960-08-23 Fromer Stephen Suntan control device
US3220841A (en) * 1962-01-12 1965-11-30 Eastman Kodak Co Photographic film
US4045227A (en) * 1972-08-04 1977-08-30 Fuji Photo Film Co., Ltd. Method for stabilizing silver halide photographic material
EP0487792A1 (en) * 1989-09-11 1992-06-03 Patent Innovations Limited Ultra-violet light detector
US6060321A (en) * 1997-07-11 2000-05-09 Hovorka; George B. Sun tan dosimeter

Also Published As

Publication number Publication date
DE685465C (en) 1939-12-18

Similar Documents

Publication Publication Date Title
US2083675A (en) Photographic print-out material having a design thereon
US2675313A (en) Photographic reproduction process
GB654631A (en) Improvements in and relating to the manufacture of photographic reversal images
GB690997A (en) Process and photographic material for the direct production of positive photographic images
ES446881A1 (en) Interimage effects with spontaneously developable silver halide
US3033682A (en) Radiation-sensitive emulsions, elements, and processes for making same
GB1524027A (en) Colour radiographic silver halide process
US3849146A (en) Direct-print light-developable silver halide emulsion containing cyclic dioxide or selenone as sensitizer
US2456956A (en) Photographic processes and lightsensitive elements therefor
DE1547741A1 (en) Photographic recording method and material for carrying out the same
US3033678A (en) Radiation-sensitive silver halide emulsions and elements, and processes of developing the same
US3149970A (en) Production of photographic silver images by physical development
US3689270A (en) Light-sensitive compositions comprising a silver salt of a tetraazaindene
US2036994A (en) Photographic film and method of treating same
GB1076777A (en) Photographic materials containing substances which form physically developable nuclei on exposure
US1582050A (en) Photographic print-out paper and prints made therefrom
US1995444A (en) Photographic printing emulsion
CA1063855A (en) Photosensitive composition containing cadmium iodide and cuprous iodide in a binder
GB882690A (en) The production of photographic images making use of the intensity-reversal effect
US2590775A (en) Silver halide emulsion containing a thio-imino-urazole as a stabilizer
US2001951A (en) Photographic printing emulsion and its production
US2457005A (en) Photographic process
JP2934633B2 (en) Photographic silver halide emulsions with improved lightroom tolerance
US3413122A (en) Process for forming images and elements therefor
DE2140736A1 (en) Spectral sensitization of photo-developable, radiation-sensitive silver halide emulsions for printing purposes