US3411910A - Photographic elements containing a hardened gelating layer - Google Patents

Photographic elements containing a hardened gelating layer Download PDF

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Publication number
US3411910A
US3411910A US411059A US41105964A US3411910A US 3411910 A US3411910 A US 3411910A US 411059 A US411059 A US 411059A US 41105964 A US41105964 A US 41105964A US 3411910 A US3411910 A US 3411910A
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US
United States
Prior art keywords
photographic
coating
emulsion
support
coated
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
US411059A
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English (en)
Inventor
Irvin H Crawford
William J Venor
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 US411059A priority Critical patent/US3411910A/en
Priority to DE19651472854 priority patent/DE1472854A1/de
Priority to FR36651A priority patent/FR1452445A/fr
Priority to BE671661A priority patent/BE671661A/xx
Priority to CH1527265A priority patent/CH438927A/fr
Priority to GB48058/65A priority patent/GB1115623A/en
Application granted granted Critical
Publication of US3411910A publication Critical patent/US3411910A/en
Anticipated expiration legal-status Critical
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
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/91—Photosensitive materials characterised by the base or auxiliary layers characterised by subbing layers or subbing means
    • G03C1/915—Photosensitive materials characterised by the base or auxiliary layers characterised by subbing layers or subbing means using mechanical or physical means therefor, e.g. corona

Definitions

  • ABSTRACT OF THE DISCLOSURE layer is very poor. It was found that treatment of the surface of hardened gelatin coatings by electron bombardment to reduce their contact angle measured with water to below 75 substantially improves the adhesion properties of the gelatin layer with subsequently-coated photosensitive emulsion layers.
  • This invention relates to photographic elements, and more particularly to supports having a hardened gelatin coating thereon and an adherent photographic emulsion coating thereover, and to the process of preparing such photographic elements.
  • a photographic support comprising paper stock suitable for photographic purposes is surface sized with gelatin containing a hardener, such as formaldehyde or chromic chloride, and the hardened gelatin coating is then electron bombarded.
  • the bombarded gelatin coating may contain, if desired, pigments, dyes or the like.
  • a gelatin silver halide emulsion is coated over the electron bombarded gelatin and sized paper support.
  • the accompanying drawing shows a photographic element in accordance with our invention comprising a support having an electron bombarded hardened gelatin coating thereon and a photographic emulsion layer thereover.
  • the supports which are useful in accordance with our invention include all the usual photographic supports, with paper supports being particularly advantageous. Any photographic supports may be employed in accordance with the invention which has a hardened gelatin coating thereon.
  • a photographic support is provided with a hardened gelatin coating.
  • Any gelatin hardener such as formaldehyde or chromic chloride, or the hardeners described in US. Patent 3,039,873, Col. 12, lines 533, and the literature referred to therein, may be employed.
  • the photographic elements of our invention comprise electron bombarded, hardened gelatin coated paper supports coated thereover with a gelatino silver halide emulsion.
  • Other hydrophilic colloid photographic binders may, however, be employed with good results.
  • light sensitive silver halide salts may be incorporated in any of the binders described in Col. 13, lines 36-67 of US. 3,039,873 and coated on electron bombarded hardened gelatin coated supports.
  • Any supports may be used, such as supports composed of paper, film base such as cellulose acetate, polyethylene terephthalate, polycarbonate and the like, metal (e.g., aluminum) and glass.
  • the hardened gelatin coating has a contact angle prior to electron bombardment greater than
  • the minimum electron treatment needed for suitable emulsion adhesion provides a contact angle of less than 75.
  • the term contact angle refers to a test for evaluating changes in the surface of the gelatin coated substrate produced by the corona discharge. The test to determine the contact angle is conducted by placing a drop of distilled water on a level sample, projecting the image of the drop and sample on a suitable screen and measuring the angle obtained by drawing a line tangent to the drop image at the point the edge of the drop touches the sample. The angle obtained is the contact angle and may be measured quickly and accurately by using a contour projector as the means of projection.
  • a corona discharge necessary to obtain satisfactory adhesion may be obtained by varying the electrical conditions with respect to frequency, volt-' age, number of electrodes and the like in the desired manner to obtain a suitable contact angle.
  • a treated element suitable for use as a base for a photographic element by subsequently coating said treated element with at least one layer of photographic emulsion, said treated element comprising a support having coated thereon a chemically hardened gelatin coating, said hardened gelatin coating having initially had a contact angle measured with water of greater than 75 and having been subjected to electronic bombardment to obtain a contact angle of less than 75 measured with water.
  • a photographic element comprising a support having a chemically hardened gelatin coating thereon and a photographic emulsion coating thereover, said hardened gelatin coating having initially had a contact angle measured with water of greater than 75 and having subse-' quently been electron bombarded to obtain a contact angle of less than 75 measured With water.
  • Claim 2 wherein the photographic emulsion is a gelatino silver halide emulsion.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
US411059A 1964-11-13 1964-11-13 Photographic elements containing a hardened gelating layer Expired - Lifetime US3411910A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US411059A US3411910A (en) 1964-11-13 1964-11-13 Photographic elements containing a hardened gelating layer
DE19651472854 DE1472854A1 (de) 1964-11-13 1965-09-09 Verfahren zur Verbesserung des Haftvermoegens photographischer Silberhalogenidemulsionen
FR36651A FR1452445A (fr) 1964-11-13 1965-10-29 Nouveau support et ses applications, notamment en photographie
BE671661A BE671661A (fr) 1964-11-13 1965-10-29
CH1527265A CH438927A (fr) 1964-11-13 1965-11-04 Procédé de fabrication d'un support photographique
GB48058/65A GB1115623A (en) 1964-11-13 1965-11-12 Photographic supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US411059A US3411910A (en) 1964-11-13 1964-11-13 Photographic elements containing a hardened gelating layer

Publications (1)

Publication Number Publication Date
US3411910A true US3411910A (en) 1968-11-19

Family

ID=23627387

Family Applications (1)

Application Number Title Priority Date Filing Date
US411059A Expired - Lifetime US3411910A (en) 1964-11-13 1964-11-13 Photographic elements containing a hardened gelating layer

Country Status (5)

Country Link
US (1) US3411910A (fr)
BE (1) BE671661A (fr)
CH (1) CH438927A (fr)
DE (1) DE1472854A1 (fr)
GB (1) GB1115623A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531322A (en) * 1966-12-28 1970-09-29 Honeywell Inc Plated super-coat and electrolyte
US3607345A (en) * 1958-04-26 1971-09-21 Eastman Kodak Co Process for coating photographic emulsion layers
US3627619A (en) * 1968-03-26 1971-12-14 Eastman Kodak Co Method and product for impeding duplication of microfilm images
US3655441A (en) * 1966-08-22 1972-04-11 Honeywell Inc Electroless plating of filamentary magnetic records

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3134615A1 (de) * 1981-09-01 1983-03-10 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und vorrichtung zur vorbehandlung von fotografischen traegermaterialien

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955953A (en) * 1956-06-05 1960-10-11 Du Pont Process of adhering an organic coating to a polymeric substrate
US3091531A (en) * 1961-02-23 1963-05-28 Eastman Kodak Co Hardening gelatin-silver halide lithographic offset printing plates
US3117865A (en) * 1961-05-04 1964-01-14 Eastman Kodak Co Photographic paper treated with electron bombarded chromic complexes
US3161519A (en) * 1961-06-14 1964-12-15 Eastman Kodak Co Non-pigmented white coating
US3250638A (en) * 1962-01-17 1966-05-10 Frederic H Lassiter Metal coated paper employing irradiated subbing layer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955953A (en) * 1956-06-05 1960-10-11 Du Pont Process of adhering an organic coating to a polymeric substrate
US3091531A (en) * 1961-02-23 1963-05-28 Eastman Kodak Co Hardening gelatin-silver halide lithographic offset printing plates
US3117865A (en) * 1961-05-04 1964-01-14 Eastman Kodak Co Photographic paper treated with electron bombarded chromic complexes
US3161519A (en) * 1961-06-14 1964-12-15 Eastman Kodak Co Non-pigmented white coating
US3250638A (en) * 1962-01-17 1966-05-10 Frederic H Lassiter Metal coated paper employing irradiated subbing layer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607345A (en) * 1958-04-26 1971-09-21 Eastman Kodak Co Process for coating photographic emulsion layers
US3655441A (en) * 1966-08-22 1972-04-11 Honeywell Inc Electroless plating of filamentary magnetic records
US3531322A (en) * 1966-12-28 1970-09-29 Honeywell Inc Plated super-coat and electrolyte
US3627619A (en) * 1968-03-26 1971-12-14 Eastman Kodak Co Method and product for impeding duplication of microfilm images

Also Published As

Publication number Publication date
BE671661A (fr) 1966-02-14
GB1115623A (en) 1968-05-29
CH438927A (fr) 1967-06-30
DE1472854A1 (de) 1969-01-09

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