US2183447A - Light-sensitive material and method of making the same - Google Patents

Light-sensitive material and method of making the same Download PDF

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Publication number
US2183447A
US2183447A US222536A US22253638A US2183447A US 2183447 A US2183447 A US 2183447A US 222536 A US222536 A US 222536A US 22253638 A US22253638 A US 22253638A US 2183447 A US2183447 A US 2183447A
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US
United States
Prior art keywords
film
light
solution
image
support
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
US222536A
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English (en)
Inventor
Dippel Cornelis Johannes
Alink Roelef Jan Hendrik
Kouning Klaas Jannes
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
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Publication of US2183447A publication Critical patent/US2183447A/en
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Expired - Lifetime legal-status Critical Current

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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
    • G03C1/00—Photosensitive materials
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances
    • G03C1/62—Metal compounds reducible to metal

Definitions

  • Our invention relates to light-sensitive layers, to a method of making the same, and to a method of obtaining contrasts therewith.
  • this image can be given a high covering power and a high density by physical development" with a silver salt.
  • the object of the present invention is to materially reduce the gradation value of the images formed on such materiaL'and for this purpose we use as a support a transparent lyophile film and provide the same with a colloidally-dispersed material which during formation of the image does not, or substantially does not, dissolve in the solution used for the physical development and which causes local variations in the concentration of the photo-sensitive diazonium compound in the film.
  • a lyophile film supporting material having a a great afilnity with respect to polar solvents we preferably use regenerated cellulose, but other materials, for instance cellulose derivatives, such as acetyl cellulose and gelatine foils may also be used 50
  • cellulose derivatives such as acetyl cellulose and gelatine foils
  • the colloidally-dispersed material may be either introduced into the support during the manufacture thereof, or formed as a colloidal precipitate in thesupport by'means of a chemical reaction.
  • the gradation value of the image can be controlled within wide limits by varying the quantity of the colloidally-dispersed material contained within the transparent film, and can be made smaller by increasing the quantity of the oolloidally-dispersed material.
  • the selection of the colloidally-dispersed material used in any particular case depends upon practical considerations.
  • the materials introduced or to be introduced into the support must not react with each other in an undesirable manner, and it is, of course, preferable to use materials which do not cause excessive fogging.
  • Practical circumstances must also be considered for the applicationof the colloidally-dispersed material. For example, if it is desired to form the oolloidallydispersed material by means of aprecipitation reaction, care should be taken'that the concerntration of the solutions are so chosen that the precipitate arises in the film itself.
  • Example I a A transparent film consisting of regenerated cellulose of a thickness of about 40a is soaked for several minutes in a nitric solution of bismuth nitrate, which may be prepared in the following manner:
  • an aqueous solution which contains 5% bismuth nitrate and 4% nitric acid.
  • the film is then introduced into a solution containing two parts by volume of ethanol (CzHsOH) and one part by volume of water.
  • the film is allowed to remain for 5 to 10 minutes in this solution while agitating the liquid,' and as a result the bismuth nitrate is hydrolised.
  • the adhering excess liquid is removed, and. the film is dried in air.
  • the film thus prepared is then soaked for several minutes in a solution obtained by mixing:
  • Example II A film of regenerated cellulose, provided with a basic bismuth nitrate precipitate in the manner described in Example I, is sensitized by means of the following solution:
  • a metal image is then obtained 'on the film by physical development in the manner described in Example I.
  • Ea'arizple ZZZ A film is provided with basic bismuth nitrate in the manner described in Example I, and is sensitized by the application of the following solution:
  • Example IV A film of superficially saponified acetyl cellulose is provided with basic bismuth nitrate in the manner described in Example I and is then sensitized with the following solution:
  • the further treatment is the same; namely, rinsing for about 15 minutes in running water, bathing .for about 15 minutes in distilled Water, blotting between filter paper, and drying in. ail.
  • films containing bismuth which are often opalescent are substantially as transparent as films that have not been treated.
  • Example VI Two similar cellulose films were treated according to Example V treatment 0 and sensitized. Subsequently one of these films was bathed for about one minute in ethanol of 55% to which is added 0.1 part by volume of glycerol. After removing the adhering excess liquid, the film was dried in air. The films were then exposed in a similar manner. After physical development, it was found that the film subjected to the aftertreatment is softer than a film which was not treated; the gradation value being 2.0 and 3.4 respectively.
  • a light-sensitive material adapted to be physically-developed after exposure bythe application of a developing solution comprising a support of a transparent lyophile colloid of the type of regenerated cellulose and cellulose derivatives, a light-sensitive system within a portion of said support and comprising a diazonium com- I pound and a metal salt which is reducible to a metal in an aqueous solution, and means within said portion to produce. local variations in the concentration of the diazonium compound and to reduce the gradation value of the light-sensitive system, said means comprising a colloidallydispersed material which is substantially not dissolved by the developing solution during the formation of the image.
  • a light-sensitive material adapted to be physically-developed after exposure by the application of a developing solution comprising a support of transparent regenerated cellulose, a lightsensitive system within a portion of said support and comprising a diazonium compound and a metal salt which is reducible to a metal in an aqueous solution, and means within said portion to produce local variations in the concentration of the diazonium compound and to reduce the gradation value of the light-sensitive system, said means comprising a oolloidally-dispersed material which is substantially not dissolved by the developing solution during the formation of the image.
  • a light-sensitive material adapted to be physically-developed after exposure by the application of a developing solution
  • a developing solution comprising a support of a transparent cellulose derivative of the type of acetyl cellulose and gelatin material, a light-sensitive system within a portion of said support and comprising a diazonium compound and a metal salt which is reducible to a metal in an aqueous solution, and means within said portion to produce local variations in the concentration of the diazonium compound and to reduce.
  • the gradation value of the light-sensitive system said means comprising a colloidally-dispersed material'which is substantially not dissolved by the developing solution during the formation of the image.
  • a light-sensitive material adapted to be physically developed after exposure by the application of a developing solution comprising a support of a transparent lyophile colloid, a lightsensitive system within a portion of said support and comprising a diazonium compound and a metal salt which is reducible to a metal in an aqueous solution, and means within said portion to produce local variations in the concentration of the diazonium compound and to reduce the gradation value of the light-sensitive system, said means comprising colloidally-dispersed basic bismuth nitrate.
  • a method of photo-chemically pro d ucing contrasts comprising the steps of placing a diazonium compound within a portion of a support of a transparent lyophile colloid to.form a lightsensitive system, incorporating within the said portion of the support to produce local variations in the concentration of the diazonium compounds coiloidally-dispersed material which is substantially not dissolved in the developing solution, selectively exposing the so-treated support to light, and physically developing the exposed support by applying to said portion a developing solution containing a metal salt reducible to a metal in an aqueous solution.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US222536A 1937-08-09 1938-08-01 Light-sensitive material and method of making the same Expired - Lifetime US2183447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN0041062 1937-08-09

Publications (1)

Publication Number Publication Date
US2183447A true US2183447A (en) 1939-12-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US222536A Expired - Lifetime US2183447A (en) 1937-08-09 1938-08-01 Light-sensitive material and method of making the same

Country Status (6)

Country Link
US (1) US2183447A (de)
BE (1) BE429591A (de)
CH (1) CH211505A (de)
FR (1) FR841911A (de)
GB (1) GB511816A (de)
NL (1) NL53832C (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416021A (en) * 1944-12-29 1947-02-18 Gen Aniline & Film Corp Light sensitive diazotype compositions and process
US2571671A (en) * 1946-01-18 1951-10-16 Hartford Nat Bank & Trust Co Process of producing photographic contrasts
US2571670A (en) * 1946-01-21 1951-10-16 Hartford Nat Bank & Trust Co Method of producing photographic contrasts
US2588218A (en) * 1946-06-01 1952-03-04 Hartford Nat Bank & Trust Co Method of drying photographic material
US2609295A (en) * 1947-10-27 1952-09-02 Hartford Nat Bank & Trust Co Process for discontinuously physically developing latent photographic images
US2618555A (en) * 1949-04-09 1952-11-18 Kalle & Co Ag Process for positive diazotype and negative metal reduction images and light-sensitive material therefor
US2733144A (en) * 1951-03-28 1956-01-31 Method of producing photographic
US2735773A (en) * 1951-03-27 1956-02-21 Method of producing a photographic
US2738272A (en) * 1950-07-25 1956-03-13 Hartford Nat Bank & Trust Co Photographic process
US2750292A (en) * 1950-05-26 1956-06-12 Hartford Nat Bank & Trust Co Process for producing colored photographic contrasts
US2764484A (en) * 1950-10-03 1956-09-25 Hartford Nat Bank & Trust Co Method of forming photographic images by physical developing
US2838398A (en) * 1951-03-27 1958-06-10 Philips Corp Method of producing a physically developable latent photographic image
US2923626A (en) * 1956-09-18 1960-02-02 Philips Corp Method of forming photographic images
US2929709A (en) * 1951-07-10 1960-03-22 Philips Corp Photographic process
US3409438A (en) * 1963-08-26 1968-11-05 Minnesota Mining & Mfg Photosensitive heat developable copysheet
US20140367613A1 (en) * 2011-12-22 2014-12-18 Gc Corporation Fluorescence imparting agent for ceramics

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416021A (en) * 1944-12-29 1947-02-18 Gen Aniline & Film Corp Light sensitive diazotype compositions and process
US2571671A (en) * 1946-01-18 1951-10-16 Hartford Nat Bank & Trust Co Process of producing photographic contrasts
US2571670A (en) * 1946-01-21 1951-10-16 Hartford Nat Bank & Trust Co Method of producing photographic contrasts
US2588218A (en) * 1946-06-01 1952-03-04 Hartford Nat Bank & Trust Co Method of drying photographic material
US2609295A (en) * 1947-10-27 1952-09-02 Hartford Nat Bank & Trust Co Process for discontinuously physically developing latent photographic images
US2618555A (en) * 1949-04-09 1952-11-18 Kalle & Co Ag Process for positive diazotype and negative metal reduction images and light-sensitive material therefor
US2750292A (en) * 1950-05-26 1956-06-12 Hartford Nat Bank & Trust Co Process for producing colored photographic contrasts
US2738272A (en) * 1950-07-25 1956-03-13 Hartford Nat Bank & Trust Co Photographic process
US2764484A (en) * 1950-10-03 1956-09-25 Hartford Nat Bank & Trust Co Method of forming photographic images by physical developing
US2735773A (en) * 1951-03-27 1956-02-21 Method of producing a photographic
US2838398A (en) * 1951-03-27 1958-06-10 Philips Corp Method of producing a physically developable latent photographic image
US2733144A (en) * 1951-03-28 1956-01-31 Method of producing photographic
US2929709A (en) * 1951-07-10 1960-03-22 Philips Corp Photographic process
US2923626A (en) * 1956-09-18 1960-02-02 Philips Corp Method of forming photographic images
US3409438A (en) * 1963-08-26 1968-11-05 Minnesota Mining & Mfg Photosensitive heat developable copysheet
US20140367613A1 (en) * 2011-12-22 2014-12-18 Gc Corporation Fluorescence imparting agent for ceramics

Also Published As

Publication number Publication date
NL53832C (de)
CH211505A (de) 1940-09-30
GB511816A (en) 1939-08-24
FR841911A (fr) 1939-06-01
BE429591A (de)

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