US2059829A - Sensitive photographic element - Google Patents

Sensitive photographic element Download PDF

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Publication number
US2059829A
US2059829A US751007A US75100734A US2059829A US 2059829 A US2059829 A US 2059829A US 751007 A US751007 A US 751007A US 75100734 A US75100734 A US 75100734A US 2059829 A US2059829 A US 2059829A
Authority
US
United States
Prior art keywords
wax
layer
photographic element
photographic
gelatine
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
US751007A
Other languages
English (en)
Inventor
Erwin J Ward
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 US751007A priority Critical patent/US2059829A/en
Priority to GB27874/35A priority patent/GB468678A/en
Priority to FR797142D priority patent/FR797142A/fr
Application granted granted Critical
Publication of US2059829A publication Critical patent/US2059829A/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
    • G03C1/7614—Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/162—Protective or antiabrasion layer

Definitions

  • Jaw/fly arm/e ovcuw/Ms wax gimwm zmmawwmwm FigrZ (7956' FROM WIX amnion EmmJMud,
  • This invention relatesto photographic elements including, particularly in the sensitive layer, a material which renders film and especially the emulsion less susceptible to abrasion, both before and after processing, as well as to decrease the coefficient of friction so that photographic materialmay be moved over a metal or other surface with less wear than would otherwise be the case.
  • the method of preparation and the type of the emulsion is comparatively immaterial as my experiments have indicated that the wax is inert in ordinary emulsions and does not decrease their keeping properties.
  • the types of emulsions and methods of incorporation may be those referred to in the patent Seel, No. 1,757,482, granted May 20 6, 1930.
  • emulsions or in any other gelatino silver halide emulsion I include a small proportion of wax". While I find carnauba wax particularly efiicacious, I contemplate the use of other natural waxes such as beeswax, Montan or Canto] wax, waxes of mineral origin, such as paraffin and synthetic waxes such as the chlorinated naphthalenes and chlorinated diphenyls, and I include all such substances under the term wax when used broadly in the claims. All of these compounds have softening or melting points higher than ordinary or room temperatures, 1. e., above about 20 C. and are therefore solid at ordinary temperatures.
  • a satisfactory method for the introduction of the wax into the photographic emulsion or gelatine layer is to disperse the wax so that particles are of the order of magnitude of those found in silver halide emulsion, i.'e. from 1 to microns.
  • a carnauba wax dispersion in water with the dispersing agent is added to the gelatine. or to the gelatino silver halide emulsion by heating the latter to approximately 40 C. and introducing the wax dispersion with vigorous dispersion at this temperature.
  • the dispersion may be made at any satisfactory concentration, but it has been found that 5% of carnauba wax is quite satisfactory, although I contemplate a wide. variation in proportions from .25. to 25 parts by weight of wax to 100 parts of dry gelatine.
  • the support I carries a composite layer, the inner portion 20 of which is sensitive and free from wax and the outer stratum 2
  • a gelatine layer 22 containing wax may also be applied to the rear of the film. This layer may contain anti-halation dyes and would be formed in the manner described and have the properties mentioned of lessening friction.
  • Other protein layers may be used, such as casein applied hot. This is then not removable in the processing bath.
  • a photographic element including a support and a gelatino silver halide emulsion thereon containing a small proportion of a wax which is solid at ordinary temperatures finely and uniformly dispersed therein.
  • a photographic element including a support and a gelatino silver halide emulsion thereon containing a small proportion of carnauba wax finely and uniformly dispersed therein.
  • a photographic element including a support and a gelatino silver halide emulsion there- 2 l on containing between V of 1% and 25% of a wax which is solid at ordinary temperatures finely and uniformly dispersed therein.
  • a photographic element including a support and a gelatino'silver halide emulsion thereon containing between 5/ of 1% and 25% of a natural wax of vegetable origin finely and uniformly dispersed therein.
  • a photographic element including a support and a gelatino silver halide emulsion thereon containing between V of 1% and 25% of carnauba wax finely and uniformly dispersed thereof, at least the inner stratum of said layer containing sensitive silver salts and at least the outer stratum thereof including a small proportion of a natural wax of vegetable origin finely and-uniformly dispersed therein.
  • a photographic sensitive element including a support,'on one face thereof a unitary gelatine layer containing a small proportion of wax finely and uniformly dispersed therein in the body of the layer, and on the opposite face thereof a sensitive emulsion layer.
  • a photographic element including a support and a unitary gelatine layer on one face thereof, the inner stratum of said layer, containing sensitive silver salts and the outer stratum thereof including a' small proportion of a wax which is solid at ordinary temperatures finely and uniformly dispersed in the layer.
  • a photographic motion picture film comprising a support of cellulose ester composition and a unitary gelatine layer on one face thereof, the inner stratum'of said layer containing sensitive silver salts and the outer stratum thereof including a small proportion of a wax which is solid at ordinary temperatures finely and uniformly dispersed in the layer.
  • a photographic motion picture film prising a support of cellulose ester composition and a unitary gelatine layer on one face thereof, the inner stratum of said layer containing sensitive silver salts and the outer stratum thereof including a small proportion of a natural wax of vegetable origin finely and uniformly dispersed therein.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US751007A 1934-11-01 1934-11-01 Sensitive photographic element Expired - Lifetime US2059829A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US751007A US2059829A (en) 1934-11-01 1934-11-01 Sensitive photographic element
GB27874/35A GB468678A (en) 1934-11-01 1935-10-09 Improvements in sensitive photographic elements
FR797142D FR797142A (fr) 1934-11-01 1935-10-31 Perfectionnements aux produits photographiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US751007A US2059829A (en) 1934-11-01 1934-11-01 Sensitive photographic element

Publications (1)

Publication Number Publication Date
US2059829A true US2059829A (en) 1936-11-03

Family

ID=25020065

Family Applications (1)

Application Number Title Priority Date Filing Date
US751007A Expired - Lifetime US2059829A (en) 1934-11-01 1934-11-01 Sensitive photographic element

Country Status (3)

Country Link
US (1) US2059829A (fr)
FR (1) FR797142A (fr)
GB (1) GB468678A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608127A (en) * 1948-05-20 1952-08-26 Robert H Redfield Protective coating for motionpicture films
DE753825C (de) * 1940-12-25 1952-10-20 Schallband Syndikat A G Verfahren zur Herstellung von Baendern fuer mechanische Schallaufnahmen
US2726955A (en) * 1952-12-19 1955-12-13 Du Pont Silver halide emulsions containing antiplumming and anti-bronzing agents
US2856283A (en) * 1956-05-07 1958-10-14 Eastman Kodak Co Photographic emulsion
US3082087A (en) * 1959-11-12 1963-03-19 Eastman Kodak Co Antistatic photographic films
US3502473A (en) * 1965-05-05 1970-03-24 Eastman Kodak Co Photographic elements containing a synthetic surface active material and inert particles
US3856529A (en) * 1967-05-26 1974-12-24 Kalle Ag Method and materials for making half tone prints
US4267266A (en) * 1978-08-07 1981-05-12 Konishiroku Photo Industry Co., Ltd. Photographic films
EP0518627A1 (fr) * 1991-06-10 1992-12-16 International Paper Company Réduction de boues d'argent pendant le traitement photographiques
EP0581006A1 (fr) * 1992-07-02 1994-02-02 Minnesota Mining And Manufacturing Company Matériau photographique à l'halogénure d'argent ayant une meilleure résistance à la désensibilisation due à la pression

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753825C (de) * 1940-12-25 1952-10-20 Schallband Syndikat A G Verfahren zur Herstellung von Baendern fuer mechanische Schallaufnahmen
US2608127A (en) * 1948-05-20 1952-08-26 Robert H Redfield Protective coating for motionpicture films
US2726955A (en) * 1952-12-19 1955-12-13 Du Pont Silver halide emulsions containing antiplumming and anti-bronzing agents
US2856283A (en) * 1956-05-07 1958-10-14 Eastman Kodak Co Photographic emulsion
US3082087A (en) * 1959-11-12 1963-03-19 Eastman Kodak Co Antistatic photographic films
US3502473A (en) * 1965-05-05 1970-03-24 Eastman Kodak Co Photographic elements containing a synthetic surface active material and inert particles
US3856529A (en) * 1967-05-26 1974-12-24 Kalle Ag Method and materials for making half tone prints
US4267266A (en) * 1978-08-07 1981-05-12 Konishiroku Photo Industry Co., Ltd. Photographic films
EP0518627A1 (fr) * 1991-06-10 1992-12-16 International Paper Company Réduction de boues d'argent pendant le traitement photographiques
EP0581006A1 (fr) * 1992-07-02 1994-02-02 Minnesota Mining And Manufacturing Company Matériau photographique à l'halogénure d'argent ayant une meilleure résistance à la désensibilisation due à la pression

Also Published As

Publication number Publication date
FR797142A (fr) 1936-04-21
GB468678A (en) 1937-07-09

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