DE547599C - Process for coating antihalation layers arranged on the back of photographic plates or films - Google Patents
Process for coating antihalation layers arranged on the back of photographic plates or filmsInfo
- Publication number
- DE547599C DE547599C DE1930547599D DE547599DD DE547599C DE 547599 C DE547599 C DE 547599C DE 1930547599 D DE1930547599 D DE 1930547599D DE 547599D D DE547599D D DE 547599DD DE 547599 C DE547599 C DE 547599C
- Authority
- DE
- Germany
- Prior art keywords
- coating
- films
- photographic plates
- layers arranged
- antihalation layers
- 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
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
-
- 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
- Y10S430/156—Precursor compound
- Y10S430/16—Blocked developers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Es hat sich gezeigt, daß die bekannten, auf der Rückseite photographischer Platten oder Filme angeordneten Lichthofschutzschichten bei mechanischer Beanspruchung häufig gefärbte Teilchen abgeben, die sich im Aufnahmeapparat absetzen und, wenn sie auf die lichtempfindliche Schicht gelangen, dort entweder durch Abdeckung des Lichtes oder durch chemische Einwirkung Flecke entstehen lassen.It has been shown that the known, on the back of photographic plates or films arranged antihalation layers under mechanical stress release colored particles which settle in the receptacle and when they hit the light-sensitive layer get there either by covering the light or cause stains to appear through chemical action.
Wie gefunden wurde, läßt sich dieser Nachteil vermeiden, indem man die Lichthofschutzschicht durch einen farblosen Überzug abdeckt, der besteht aus Derivaten des Diarylmethane, die im Kern mindestens eine Hydroxyl- oder Carboxylgruppe besitzen. Geeignet sind z. B. folgende Verbindungen:It has been found that this disadvantage can be avoided by removing the antihalation layer covered by a colorless coating, which consists of derivatives of diarylmethane, the core of which is at least one Have hydroxyl or carboxyl group. Suitable are e.g. B. the following connections:
OH-OH-
-CH9--CH 9 -
COOHCOOH
OHOH
CH.CH.
(i)(i)
COOH
OHCOOH
OH
CH3 CH 3
(2) OH (2) OH
OHOH
OHOH
-CH2-J^ Χ-CH,-/Χ -CH 2 -J ^ Χ -CH, - / Χ
CH3
OHCH 3
OH
\/
CH3 \ /
CH 3
OHOH
CH3 OHCH 3 OH
COOH-COOH-
-CEL--CEL-
-CBL--CBL-
CH3 CH 3
CHa CH a
CHCH
-COOH-COOH
(4)(4)
Dieser Überzug, der aus nicht wäßrigen Lösungen, z. B. in Alkoholen, und in einer Dicke von 0,5 bis 2 μ angetragen wird, verhindert vollständig mechanische Verletzungen der farbstoffhaltigen Lichthofschutzschicht. In den üblichen photographischen Entwicklungsbädern löst er sich in etwa 30 bis 40 Sekunden glatt auf.This coating, which consists of non-aqueous solutions, e.g. B. in alcohols, and in one Thickness of 0.5 to 2 μ is applied, completely prevents mechanical injuries the dye-containing antihalation layer. In conventional photographic developing baths, it dissolves in about 30 to 40 seconds smooth on.
Auf einen Nitrocellulosefilm wird eine Lichthofschutzschicht aus einer Lösung von 1 g polyglucuronsaurem Ammonium, 1 g Fuchsin, ioo ecm Wasser angetragen. Nach demAn antihalation layer from a solution of 1 g is applied to a nitrocellulose film polyglucuronic acid ammonium, 1 g fuchsine, ioo ecm of water applied. After this
Trocknen erhält die Lichthofschutzschicht einen Überzug "aus einer Logung von 4 g Dioxydiphenylmethandicarbonsäure in 100 ecm Äthanol. ■ -After drying, the antihalation layer is given a coating consisting of 4 g of dioxydiphenylmethanedicarboxylic acid in 100 ecm ethanol. ■ -
Auf einen Celluloseacetatfilm wird eine Lichthofschutzschicht aus einer Lösung von 2 g Gummiarabikum, 1 g Methylblau, 50 ecm Äthanol, 50 ecm Wasser angetragen. Nach dem Trocknen erhält die Lichthofschutzschicht einen Überzug aus einer Lösung von S g Di-On a cellulose acetate film is a Antihalation layer made from a solution of 2 g gum arabic, 1 g methyl blue, 50 ecm Ethanol, 50 ecm of water applied. To After drying, the antihalation layer is coated with a solution of S g di-
oxydimethyldiphenylmethan in too ecm Propanol. oxydimethyldiphenylmethane in too ecm propanol.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE547599T | 1930-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE547599C true DE547599C (en) | 1932-03-26 |
Family
ID=34427999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930547599D Expired DE547599C (en) | 1930-11-01 | 1930-11-01 | Process for coating antihalation layers arranged on the back of photographic plates or films |
Country Status (4)
Country | Link |
---|---|
US (1) | US2075144A (en) |
DE (1) | DE547599C (en) |
FR (1) | FR724619A (en) |
GB (1) | GB374735A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2744882A (en) * | 1949-01-26 | 1956-05-08 | Union Carbide & Carbon Corp | Unsymmetrical diphenylol methanes |
US2548982A (en) * | 1949-03-18 | 1951-04-17 | Dominion Tar & Chemical Co | Polyaryl polyparaffins |
US2849325A (en) * | 1952-06-28 | 1958-08-26 | Hercules Powder Co Ltd | Stabilized cellulose ether composition |
-
1930
- 1930-11-01 DE DE1930547599D patent/DE547599C/en not_active Expired
-
1931
- 1931-09-23 GB GB26575/31A patent/GB374735A/en not_active Expired
- 1931-10-15 US US569067A patent/US2075144A/en not_active Expired - Lifetime
- 1931-10-16 FR FR724619D patent/FR724619A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2075144A (en) | 1937-03-30 |
FR724619A (en) | 1932-04-29 |
GB374735A (en) | 1932-06-16 |
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