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 films

Info

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
Application number
DE1930547599D
Other languages
German (de)
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of DE547599C publication Critical patent/DE547599C/en
Expired legal-status Critical Current

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.

Beispiel 1example 1

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. ■ -

Beispiel 2Example 2

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)

Patentanspruch:Claim: Verfahren zum Lackieren von auf der Rückseite photographischer Platten oder Filme angeordneten Lichthofschutzschichten, dadurch gekennzeichnet, daß Derivate des Diarylmethans, die mindestens eine Hydroxyl- oder Carboxylgruppe im Kern enthalten, aus nicht wäßriger Lösung in dünner Schicht angetragen werden.Process for lacquering on the back of photographic plates or Films arranged antihalation layers, characterized in that derivatives of the diarylmethane, the at least one hydroxyl or carboxyl group in the core should be applied in a thin layer from a non-aqueous solution.
DE1930547599D 1930-11-01 1930-11-01 Process for coating antihalation layers arranged on the back of photographic plates or films Expired DE547599C (en)

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)

* Cited by examiner, † Cited by third party
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

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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