DE406846C - Compensation of the different copying density of cinematographic picture tapes - Google Patents
Compensation of the different copying density of cinematographic picture tapesInfo
- Publication number
- DE406846C DE406846C DEL58291D DEL0058291D DE406846C DE 406846 C DE406846 C DE 406846C DE L58291 D DEL58291 D DE L58291D DE L0058291 D DEL0058291 D DE L0058291D DE 406846 C DE406846 C DE 406846C
- Authority
- DE
- Germany
- Prior art keywords
- compensation
- cinematographic
- tapes
- different copying
- copying density
- 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
Links
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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/12—Cinematrographic processes of taking pictures or printing
Description
Ausgleich der verschiedenen Kopierdichte kinematographischer Bildbänder. Es ist vorgeschlagen worden, die verschiedene Kopierdichte kinematographischer Negative durch verschieden starke Anfärbung auszugleichen. Eine derartige Anfärbung ist aber unter gewöhnlichen Umständen technisch unverwendbar. Wird die Zelluloidseite angefärbt, so läßt sich die Anfärbung nicht wieder beseitigen, so daß das Negativ dauernd verändert ist. Derartige Veränderungen werden aber einerseits von den Besitzern der Negative nicht zugegeben und machen es anderseits unmöglich, vorgekommenen Fehler zu korrigieren. Wird die Gelatine angefärbt, so erhält diese ohne Innehaltung besonderer, bisher in ihrer Wirkung für den vorliegenden Zweck nicht erkannter und daher auch nicht angewendeter Arbeitsbedingungen ebenfalls eine unauswaschbare Färbung. Außerdem wird unter allen Umständen, unter denen eine Anfärbung ,eintritt, der Farbstoff auf dem angefärbten Medium, hier der Gelatine, konzentriert, so daß die Intensität der Färbung nicht nur von der ausgeprobten und leicht innezuhaltenden Konzentration, sondern auch von Zeit, Temperatur und anderen unkontrollierbaren Faktoren abhängt. Zudem wird umgekehrt durch Konzentration des Farbstoffs auf der Faser dieser der Lösung entzogen, so daß der Gehalt der Lösung sinkt und sie nur einmal gebraucht werden könnte. Ein derartiger Verbrauch an Farbstoff macht aber das Verfahren für die Praxis unverwendbar.Compensation of the different copying densities of cinematographic picture tapes. It has been suggested that the density of copying of cinematographic negatives be different compensate for by differently strong staining. However, such a staining is technically unusable under normal circumstances. If the celluloid side is stained, so the staining cannot be removed again, so that the negative changes constantly is. Such changes are made on the one hand by the owners of the negatives not admitted and on the other hand make it impossible to correct errors that have occurred. If the gelatine is colored, it is given a special, so far, without pausing its effect for the present purpose not recognized and therefore not applied working conditions also produce an indelible color. aside from that becomes the dye under all circumstances in which staining occurs concentrated on the stained medium, here the gelatin, so that the intensity the color not only from the concentration that is tried out and easy to pause, but also depends on time, temperature and other uncontrollable factors. In addition, when the dye is concentrated on the fiber, it is reversed Removed solution, so that the content of the solution drops and it is only used once could be. Such a consumption of dye makes the process for the practice unusable.
Um eine zum Ausgleich der verschiedenen Kopierdichte technisch brauchbare Form der Färbung zu erhalten, kann daher nur auf der Gelatineseite und nicht auf dem Zelluloid gearbeitet werden und darf die Färbung nur in dem Aufsaugen der Lösung eines Farbstoffs bestehen, der die Gelatine selbst nicht anfärbt und aus ihr durch «Waschen wieder vollkommen beseitigt werden kann. Die geforderte Eigenschaft besitzen, wie bekannt, nur bestimmte Farbstoffe, im wesentlichen basische, während saure nur in seltenen Fällen unter Zusatz von Alkalien zur Lösung brauchbar sind.To compensate for the different copying densities technically usable Form of coloring can therefore only be obtained on the gelatin side and not on the celluloid should be worked and the coloring may only be done by soaking up the solution consist of a dye that does not color the gelatin itself and from it through «Washing can be completely eliminated again. Have the required property As is known, only certain dyes, essentially basic, while only acidic can be used in rare cases with the addition of alkalis to the solution.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL58291D DE406846C (en) | 1923-07-14 | 1923-07-14 | Compensation of the different copying density of cinematographic picture tapes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL58291D DE406846C (en) | 1923-07-14 | 1923-07-14 | Compensation of the different copying density of cinematographic picture tapes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE406846C true DE406846C (en) | 1924-11-28 |
Family
ID=7279211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL58291D Expired DE406846C (en) | 1923-07-14 | 1923-07-14 | Compensation of the different copying density of cinematographic picture tapes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE406846C (en) |
-
1923
- 1923-07-14 DE DEL58291D patent/DE406846C/en not_active Expired
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