US2054284A - Photographic film - Google Patents

Photographic film Download PDF

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Publication number
US2054284A
US2054284A US673599A US67359933A US2054284A US 2054284 A US2054284 A US 2054284A US 673599 A US673599 A US 673599A US 67359933 A US67359933 A US 67359933A US 2054284 A US2054284 A US 2054284A
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US
United States
Prior art keywords
layer
nlm
gelatine
cellulose
intermediate layer
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
US673599A
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English (en)
Inventor
Forstmann Walther
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.)
Voigtlander AG
Original Assignee
Voigtlander AG
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 Voigtlander AG filed Critical Voigtlander AG
Application granted granted Critical
Publication of US2054284A publication Critical patent/US2054284A/en
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/76Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/91Photosensitive materials characterised by the base or auxiliary layers characterised by subbing layers or subbing means
    • G03C1/93Macromolecular substances therefor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements

Definitions

  • PHOTOGRAPHIC FILM Filed May 3l, 1933 @ferme/hl? layer canta/'mkg f//e ame f/,ae of fella/05e ester z5 f//e f//m odf VIH y f a 'cnu' 'Patented Sept. 15, 1936 PATENT OFFICE PHOTOGRAPHIC FILM Walther Forstmann,
  • My invention relates to photographic lms, more especially of the kind in which an intermediate substratum layer is inserted between the sensitive layer and the lm body serving as carrier of this sensitive layer.
  • a. gelatine layer as constituted by a photographic emulsion, when arranged directly on a base or carrier such as cellulose nitrate, cellulose acetate or the like, will not adhere to this carrier as solidly as required in practical use. After the gelatine has dried down on the carrier, it can as a rule be stripped as a whole, and on being acted upon by a watery liquid, such las a developer, xation or reinforcing liquor, the gelatine layer will frequently come oif, starting from the edges.
  • an intermediate layer serving as binder has been inserted between the two parts.
  • carriers consisting of nitrocellulose have been coated with a preparation consisting of gelatine pretreated by allowing it to swell in small quantities of water, dissolving the swollen gelatine by adding glacial acetic acid and diluting the gelatine solution with alcohol, acetone or the like.
  • 'Ihe percentage of filmmaterial or cotton to be dissolved in the solution designed to form the intermediate layer depends from the physical and chemical properties of the body material and the character and thickness of the hydrophil colloid v layer (for instance the photographic emulsion) to be subsequently deposited on the intermediate layer.
  • ⁇ VYIt may vary for instance between onetenth oi.' and three times the quantity of gelatine incorporated in the intermediate layer.
  • This layer has been found to nrmly cement the emulsion to the nlm body.
  • I may obtain a similar en'ect. when incorporating in the solution forming the intermediate layer a cellulose compound or cotton oi the same type, however possessing physical properties diil'ering from those of the nlm body material. For instance in the case ot a nlm formed from highly viscous cellulose triacetate, I may use an intermediate layer containing a low viscosity triacetate or a mixture thereof with the same high viscosity material.
  • my invention is not limited to intermediate layers formed with gelatine, but is applicable also to layers containing any other kind o! colloids of similar action, including agar-agar, isinglass, albumen etc.
  • hydrophil colloids which may be spread on the intermediate layer.
  • hydrophil colloids which may be spread on the intermediate layer.
  • I may mention, besides gelatine and photographic emulsion. also agaragar, albumen, gum arabic etc. and mixtures ot two or more of these substances.
  • colloids contained in the intermediate layer and the superposed layer (sensitive layer) be identical, and I may for instance pour an agar-agar solution on an intermediate layer formed with gelatine.
  • Photographic nlm comprising in combination, a nlm body containing a cellulose' ester, a
  • said nlm body and said sensitized layer being a substantially homogeneous mixture oi! a hydrophil colloid and a cellulose ester of the same chemical composition as the said cellulose ester contained in said nlm body.
  • Photographic nlm comprising in combination, a nlm body containing a cellulose ester, a sensitized layer and an intermediate substratum layer inserted between said nlm body and said sensitized layer and being a substantially homogeneous mixture oi a hydrophil colloid and the same cellulose ester as said nlm and which is ilterunited with said nlm and with said sensitized yer.
  • Photographic nlm comprising in combination, a cellulose acetate nlm body, an intermediate substratum layer on said nlm body being a substantially homogeneous mixture o! cellulose acetate and a hydrophil colloid, and a sensitized layer on said intermediate layer, the said substratum layer being inter-united with said nlm body and with said sensitized layer.
  • Photographic nlm comprising in combination, a nlm body containing a cellulose ester. a sensitized layer and an intermediate substratum layer inserted between said nlm body and said sensitized layer and being a substantially homogeneous mixture of a hydrophil colloid and from one-tenth to the treble, calculated on this colloid. of a cellulose ester containing the same acid radical as said cellulose ester contained in said nlm body.
  • Photographic nlm comprising in combination. a nlm body containing a mixed cellulose acetate ester, a sensitized layer, and an intermediate substratum layer inserted between. and inter-united with. said nlm body and said sensitized layer and being a substantially homogeneous mixture o! a hydrophil colloid and a cellulose esterofthesameacidasthenlmbody.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
US673599A 1932-06-07 1933-05-31 Photographic film Expired - Lifetime US2054284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV28277D DE576416C (de) 1932-06-07 1932-06-07 Zwischenschicht fuer aus Celluloseacetat und deren Mischestern bestehende Schichttraeger

Publications (1)

Publication Number Publication Date
US2054284A true US2054284A (en) 1936-09-15

Family

ID=6422189

Family Applications (1)

Application Number Title Priority Date Filing Date
US673599A Expired - Lifetime US2054284A (en) 1932-06-07 1933-05-31 Photographic film

Country Status (6)

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US (1) US2054284A (US07943777-20110517-C00090.png)
BE (1) BE396391A (US07943777-20110517-C00090.png)
DE (1) DE576416C (US07943777-20110517-C00090.png)
FR (1) FR756479A (US07943777-20110517-C00090.png)
GB (1) GB407573A (US07943777-20110517-C00090.png)
NL (1) NL35004C (US07943777-20110517-C00090.png)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476240A (en) * 1943-09-17 1949-07-12 Gen Aniline & Film Corp Manufacture of photographic film base
US2527267A (en) * 1944-10-30 1950-10-24 Ilford Ltd Photographic layers containing gelatin-sulfonic acid complexes, and their preparation
US2544237A (en) * 1944-07-01 1951-03-06 Noc Company Di Photosensitive transfer
US2578282A (en) * 1946-07-09 1951-12-11 Eastman Kodak Co Protective layer for finished photographic film
US2593912A (en) * 1948-11-19 1952-04-22 Gen Aniline & Film Corp Photographic film containing hardened gelatin
US2606835A (en) * 1947-09-02 1952-08-12 Du Pont Light-sensitive photographic element
US2992156A (en) * 1958-03-03 1961-07-11 Eastman Kodak Co Method of treating paper prepared from partially acetylated cellulose fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE553003A (fr) * 1951-03-17 1956-12-15 Mondiacolor S A Procédé photomécanique pour préparer des supports mosaïques multicolores utilisables pour la photographie et cinématographie additive en couleur et produits en résultant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476240A (en) * 1943-09-17 1949-07-12 Gen Aniline & Film Corp Manufacture of photographic film base
US2544237A (en) * 1944-07-01 1951-03-06 Noc Company Di Photosensitive transfer
US2527267A (en) * 1944-10-30 1950-10-24 Ilford Ltd Photographic layers containing gelatin-sulfonic acid complexes, and their preparation
US2578282A (en) * 1946-07-09 1951-12-11 Eastman Kodak Co Protective layer for finished photographic film
US2606835A (en) * 1947-09-02 1952-08-12 Du Pont Light-sensitive photographic element
US2593912A (en) * 1948-11-19 1952-04-22 Gen Aniline & Film Corp Photographic film containing hardened gelatin
US2992156A (en) * 1958-03-03 1961-07-11 Eastman Kodak Co Method of treating paper prepared from partially acetylated cellulose fibers

Also Published As

Publication number Publication date
BE396391A (US07943777-20110517-C00090.png) 1933-06-30
NL35004C (US07943777-20110517-C00090.png) 1935-03-15
DE576416C (de) 1933-05-12
GB407573A (en) 1934-03-22
FR756479A (fr) 1933-12-11

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