CH114302A - Process for the production of a cinema film intended for the production of positive copies, consisting of a celluloid tape and a sensitized colloid layer carried by the same. - Google Patents

Process for the production of a cinema film intended for the production of positive copies, consisting of a celluloid tape and a sensitized colloid layer carried by the same.

Info

Publication number
CH114302A
CH114302A CH114302DA CH114302A CH 114302 A CH114302 A CH 114302A CH 114302D A CH114302D A CH 114302DA CH 114302 A CH114302 A CH 114302A
Authority
CH
Switzerland
Prior art keywords
production
same
colloid layer
layer carried
film intended
Prior art date
Application number
Other languages
German (de)
Inventor
Westland-Film G M B H
Original Assignee
Westland Film G M B H
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 Westland Film G M B H filed Critical Westland Film G M B H
Publication of CH114302A publication Critical patent/CH114302A/en

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  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Description

  

  Verfahren zur Herstellung eines für die     Gewinnung    von Positivkopien bestimmten       Kinofilms,    bestehend aus einem     Zelluloidband    und einer von, demselben getragenen,  sensibilisierten     Kolloidschielit.       Die Erfindung betrifft ein Verfahren zur  Herstellung eines für die Gewinnung von  Positivkopien bestimmten, aus einem     Zellu-          loidba.nd    und einer von demselben getragenen,  sensibilisierten     Kolloidscliicht    bestehenden  Kinofilms.

   Nach dem Verfahren gemäss der       hrfindung    wird zum Sensibilisieren der  Masse der     Kolloidschicht    eine Lösung von       Kaliumbichromat,        Ferricyanid    und Bromka  lium verwendet. Die     Kolloidscliiclit    kann  zum Beispiel aus Gelatine oder Gummi be  stehen und deren Masse kann vor oder nach  dem Aufbringen auf das     Zelluloidband    licht  empfindlich gemacht werden, indem man die       Kolloidmasse    mit einer Lösung, welche zum  Beispiel auf 1 Liter Lösung $0 Teile     Bichro-          rnat,    5 Teile     Ferri.cyanid    und 5 Teile Brom  kalium enthält, sensibilisiert.

    



  Die Herstellung der Positivkopien kann  derart geschehen, dass der sensibilisierte Film  belichtet, in warmem Wasser     ausgewaschen     und gegebenenfalls gefärbt wird, oder auch    indem in bekannter Weise die     Entwicklung     mit kaltem Wasser vorgenommen wird, wo  bei die unbelichtete Gelatine so stark an  quillt, dass das Bild schon in nassem Zustande  sichtbar ist.  



  Bei derart hergestellten Films kann man  die Belichtungsdauer erheblich herabsetzen.



  Process for the production of a cinema film intended for the production of positive copies, consisting of a celluloid tape and a sensitized colloid schielite carried by the same. The invention relates to a method for producing a film intended for the production of positive copies and consisting of a celluloid film and a sensitized colloidal film carried by the same.

   According to the method according to the invention, a solution of potassium dichromate, ferricyanide and bromine potassium is used to sensitize the mass of the colloid layer. The colloidal cliiclite can consist of gelatine or gum, for example, and its mass can be made sensitive to light before or after being applied to the celluloid tape by treating the colloid mass with a solution which, for example, makes 1 liter of solution $ 0 parts of dichromate, 5 Parts of ferric cyanide and 5 parts of potassium bromide, sensitized.

    



  The positive copies can be produced in such a way that the sensitized film is exposed, washed out in warm water and, if necessary, colored, or by developing in a known manner with cold water, where the unexposed gelatin swells so much that the image swells is visible even when wet.



  With film produced in this way, the exposure time can be reduced considerably.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines, aus einem Zelluloidband und einer von demselben getragenen sensibilisierten Kolloidschicht be stehenden, für die Gewinnung von Positiv kopien bestimmten Kinofilms, dadurch ge kennzeichnet, dass zur Sensibilisierung der Kolloidmasse eine Lösung von Kaliiimbichro- mat, Ferricyanid und Bromkalium verwen det wird. PATENT CLAIM: A process for the production of a film intended for the production of positive copies, consisting of a celluloid tape and a sensitized colloid layer carried by the same, characterized in that a solution of potassium dichromate, ferricyanide and potassium bromide is used to sensitize the colloid mass becomes.
CH114302D 1924-01-05 1924-12-27 Process for the production of a cinema film intended for the production of positive copies, consisting of a celluloid tape and a sensitized colloid layer carried by the same. CH114302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE114302X 1924-01-05

Publications (1)

Publication Number Publication Date
CH114302A true CH114302A (en) 1926-03-16

Family

ID=5653754

Family Applications (1)

Application Number Title Priority Date Filing Date
CH114302D CH114302A (en) 1924-01-05 1924-12-27 Process for the production of a cinema film intended for the production of positive copies, consisting of a celluloid tape and a sensitized colloid layer carried by the same.

Country Status (1)

Country Link
CH (1) CH114302A (en)

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