US1846230A - Photographic film - Google Patents

Photographic film Download PDF

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Publication number
US1846230A
US1846230A US501526A US50152630A US1846230A US 1846230 A US1846230 A US 1846230A US 501526 A US501526 A US 501526A US 50152630 A US50152630 A US 50152630A US 1846230 A US1846230 A US 1846230A
Authority
US
United States
Prior art keywords
layer
emulsion
film
photographic film
light
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
US501526A
Other languages
English (en)
Inventor
William G Stuber
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
Priority to BE384852D priority Critical patent/BE384852A/xx
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US501526A priority patent/US1846230A/en
Priority to GB32089/31A priority patent/GB377063A/en
Priority to FR728098D priority patent/FR728098A/fr
Application granted granted Critical
Publication of US1846230A publication Critical patent/US1846230A/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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/46—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein having more than one photosensitive layer
    • 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
    • G03C1/95—Photosensitive materials characterised by the base or auxiliary layers rendered opaque or writable, e.g. with inert particulate additives
    • 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
    • Y10S430/131—Anticurl layer

Definitions

  • This invention relates to a photographic film having new characteristics.
  • An object of the invention is to provide a film of such character that developed negatives made with it may be more easily judged as to detail and general quality.
  • a further object is to lessen halation in the film.
  • opalescent emulsion layer obtained by adding a suitable material to the entire emulsion.
  • a suitable material for example, rubber latex and starch have been suggested.
  • a transparent support 1 of any of the customary compositions, such as cellulosic derivatives, has coated on the back a layer 2, which may be of plain gelatin to prevent curling, or it may be of any type employed to prevent halation.
  • a layer 3 which contains a white, light-diflusing material such as starch.
  • This material is present in a sufiicient quan- 'tity to render the layer of a white appearance, and distinctly light-difi'using, but not opaque.
  • another layer 4 which consists of a so-called fast emulsion. This layer is coated over the layer 3 preferably after the latter has dried.
  • the emulsion of the layer 4.- may be of the ordinary type, or it may be sensitized with dyes to make it color sensitive.
  • the layer 3 is a colloid layer of low hotographic sensitivity and contains the lig t diffusing material. I do not limit myself as to the ingredients of this layer 3, as I may wish to include any colloid or carrier, any translucent or white light-difiusing substance, and
  • a preferred embodiment of my invention is a transparent support of a cellulosic derivative coated on the back with a gelatin layer to prevent curling, on the reverse side a slow silver halide emulsion layer containing starch, and over this a fast silver halide emulsion rendered orthochromatic or panchromatic.
  • I may use a special coating with or without gelatin to prevent halation.
  • the particular construction used in my invention has advantages also over the method of coating the light diffusing layer on the back opposite the emulsion side. If such a layer containing a light diffusing material is coated on the back, it becomes difficult in the ordinary dark room light to tell which is the emulsion side, an important detail in printing. Both sides feel the same to the touch and appear similar to the eye. Film made according to this invention is glossy and smooth on the back, enabling the operator to determine immediately which is the emulsion side just as easily as with ordinary film.
  • a photographic film comprising a transparent support, a 810W sensitive silver halide layer thereon containing a perma nently translucent light-diffusing material, and over this a fast silver halide layer.
  • a photographic film comprising a transparent support, and two silver halide layers carried thereby, one coated over the other, the under of said layers being a slow emulsion containing a White 1i ht-diflusing material which is not effected y the ordinary developing and fixing baths, and the upper of said layers consisting of a fast emulsion.
  • a photographic film comprising a transparent support of a cellulosic derivative having on one surface a layer containing gelatin and a light absorbing dye and tending to prevent curl and halation and on the reverse surface a highly sensitive silver halide layer, and between said support and said sensitive layer another layer which has low photographic sensitivity and contains a White light-diffusing material which is not effected by the ordinary photographic developing and fixing baths.
  • a photographic film comprising a 95 transparent support of a cellulosic derivative, on the back a layer containing gelatin, on the reverse side a fast sensitive silver halide layer, and between said support and said sensitive layer a slow silver halide emulsion layer con- 40 taining a White light-diffusing material which is not effected by the ordinary developing and fixing baths.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US501526A 1930-12-11 1930-12-11 Photographic film Expired - Lifetime US1846230A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE384852D BE384852A (en)van) 1930-12-11
US501526A US1846230A (en) 1930-12-11 1930-12-11 Photographic film
GB32089/31A GB377063A (en) 1930-12-11 1931-11-19 Improvements in or relating to photographic films or plates
FR728098D FR728098A (fr) 1930-12-11 1931-12-10 Film photographique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US501526A US1846230A (en) 1930-12-11 1930-12-11 Photographic film

Publications (1)

Publication Number Publication Date
US1846230A true US1846230A (en) 1932-02-23

Family

ID=23993909

Family Applications (1)

Application Number Title Priority Date Filing Date
US501526A Expired - Lifetime US1846230A (en) 1930-12-11 1930-12-11 Photographic film

Country Status (4)

Country Link
US (1) US1846230A (en)van)
BE (1) BE384852A (en)van)
FR (1) FR728098A (en)van)
GB (1) GB377063A (en)van)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483991A (en) * 1945-03-03 1949-10-04 Atomic Energy Commission Radiation exposure meter
US2535370A (en) * 1945-09-28 1950-12-26 Technicolor Motion Pieture Cor Cinematographic matte printing
US2573685A (en) * 1947-04-15 1951-11-06 Welford C Blinn Humidostat
US2937945A (en) * 1953-09-16 1960-05-24 Agfa Ag Process and photographic material for the direct production of positive photographicimages
US2978324A (en) * 1953-02-27 1961-04-04 Koch Processes Ltd Half-tone printing blocks
US5219718A (en) * 1991-05-22 1993-06-15 Fuji Photo Film Co., Ltd. Silver halide photographic material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483991A (en) * 1945-03-03 1949-10-04 Atomic Energy Commission Radiation exposure meter
US2535370A (en) * 1945-09-28 1950-12-26 Technicolor Motion Pieture Cor Cinematographic matte printing
US2573685A (en) * 1947-04-15 1951-11-06 Welford C Blinn Humidostat
US2978324A (en) * 1953-02-27 1961-04-04 Koch Processes Ltd Half-tone printing blocks
US2937945A (en) * 1953-09-16 1960-05-24 Agfa Ag Process and photographic material for the direct production of positive photographicimages
US5219718A (en) * 1991-05-22 1993-06-15 Fuji Photo Film Co., Ltd. Silver halide photographic material

Also Published As

Publication number Publication date
FR728098A (fr) 1932-06-29
GB377063A (en) 1932-07-21
BE384852A (en)van)

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