US1971430A - Antihalation layer - Google Patents

Antihalation layer Download PDF

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Publication number
US1971430A
US1971430A US608518A US60851832A US1971430A US 1971430 A US1971430 A US 1971430A US 608518 A US608518 A US 608518A US 60851832 A US60851832 A US 60851832A US 1971430 A US1971430 A US 1971430A
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US
United States
Prior art keywords
support
layer
halation
emulsion
colloidal silver
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
US608518A
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English (en)
Inventor
Schneider Wilhelm
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.)
GAF Chemicals Corp
Original Assignee
Agfa Ansco Corp
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Filing date
Publication date
Application filed by Agfa Ansco Corp filed Critical Agfa Ansco Corp
Application granted granted Critical
Publication of US1971430A publication Critical patent/US1971430A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains
    • F16G13/14—Hauling- or hoisting-chains so called ornamental chains built up from readily-separable links
    • 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
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/8255—Silver or silver compounds therefor

Definitions

  • My presentinvention relates to the manufacture of anti-halation layers for photographic man terial and more particularly to anti-halation layers which present some advantages when vapplied 5 to photographic materials destined for the reversal process.
  • One of its objects is to provide an anti-halation layer which is easily removable in the reversal baths, while the film support is colored with a l l0 dye coveringthe gapsI of absorption of the removable anti-halation layer and giving at the same time an agreeable impression to the spectator of the finished material. Further objects Will be apparent from the detailed speciilcation following hereafter.
  • the photographic material is provided with an anti-halation layer comprising colloidal silver, that is to say, silver in such a state that the single particles cannot be discerned with the microscope, and a binding agent.
  • colloidal silver that is to say, silver in such a state that the single particles cannot be discerned with the microscope
  • a binding agent e.g., a light filter the spectral permeability of which depends upon the size of the colloidal silver particles. The larger the ⁇ particles the more the permeability will be shifted from the yellow to the green region of the spectrum.
  • the size of the particles can be influenced by the addition of a suitable electrolyte, 'such as disodium phosphate, during or after the manufacture of the mixture of colloidal silver and binding agent, the addition of an electrolyte causing an increase in the size of the particles.
  • the support is dyed blue or violet, for instance lavender.
  • suitable dyes I mention light blue (Schultz, Farbstoitabellen 1923, Nr. 521), aniline blue ⁇ (Schultz, Farbstotabellen 1913, Nr. 521), violet B (Schultz Farbstofftabellen 1923, Nr. 517).
  • a lavender color is obtainable by mixing a blue dye with rhodamin 3 B (Schultz, Farbstoiftabellen 1923, Nr. 574).
  • a dye is selected which gives an agreeable impression to the spectator.
  • binding agent for the colloidal silver layer I prefer gelatin but other binding agents, such as casein or the calcium salt of polyglucuronic acid likewise may be'
  • binding agents such as casein or the calcium salt of polyglucuronic acid
  • dyes which do not give such an impression to the spectator likewise may be used, however, in this case the dyes must be removed 00 during the reversal developing process.
  • dyes may be incorporated in the same layer as the colloidal silver or they may be applied in a separate layer.
  • Suitable dyes are, for instance, those whichare described in my copending application Serial Number, 586,966, led January 15, 1932.y
  • an acid permanganate solution is used as reversal y developing bath instead of the acid blchromate bath.
  • l The gelatin or other binding material con- !0 The following examples serve to illustrate the I invention:
  • Example 1 A solution of 25 grams of hydrazine sulfate in 500 grams of water is-added to a solution of 1000 grams of water grams of silver nitrate 200 grams of ammonia of 30 per cent strengt and 190 grams of gelatin 1 in the course of 1 hour at a temperature of 60 C. 85 Heating is then continued for further 45 minutes. Hereafter the solution is allowed to solidify, cut into small pieces and washed with water for about 1 to 2 hours. After having been molten the product is applied in the usual manner to a support 00 lwhich has been dyed with aniline blue. In case of a support made of nitrocellulose a solution of 5 to 10 grams of dyestufi in 100 parts of a.
  • Example 2 -50 per cent of a gelatin containing colloidal silver prepared according to Example 1 ⁇ 100 and 50 per cent of gelatin containing the coupling product of 1.7-aminonaphthol and dianisldine are mixed and this mixture is applied in known manner as anti-halation layer.
  • 'I'he gelatin containing the said coupling product is obtainable as follows. A solution of 50 to 100 parts by weight of gelatin in 800 parts by weight of water is mixed with 100 parts by weight of 116 molal solution of 1.7-aminonaphtho1 and 3 parts by weight of ⁇ sodium carbonate. ⁇ This mixture is brought to a temperature of about C. and there are added 100 parts by weight of 115 molal diazo solution of dianisidine. The resulting mass is allowed to solidify, cut in pieces, washed and molten and is then ready for use.
  • a process for manufacturing anti-halation layers which comprises dissolving silver nitrate in an aqueous solution of a binding agent containing ammonia, precipitating the silver in colloidal form by adding a reducing agent, allowing the solution to solidify, reducing the solidiiied mass to small pieces, washing the pieces and preparing the anti-halation layer from this product.
  • a process for manufacturing anti-halation 'layers which comprises dissolving 100 parts by :hour at a temperature of 60 C., continuing heating for further minutes, causing then the solution to solidify, reducing the solidenderd mass to small pieces, washing the pieces for about 1-2 hours and producing the anti-halation'layer from the product thus obtained.
  • a photographic article comprising a light sensitive emulsion, a supportA for said emulsion and an anti-halation layer attached to said support comprising colloidal silver and a binding agent.
  • a photographic article comprising a light sensitive emulsion, a support for said emulsion and an anti-halation layer attached to said support, said anti-halationy layer being permeable to the wave lengths from about 550 to 700 pp. comprising colloidal silver and a binding agent.
  • a photographic article comprising a light sensitive emulsion, a support for said emulsion and an anti-halation layer attached to said support, said anti-halation layer beingl permeable .to wave lengths from about 550 to '100 mi comprising colloidal silver and a. binding agent, and said support being colored with a dye covering the gap of absorption of said anti-halation layer.
  • ⁇ photographic article comprising a light sentitlve emulsion, a support for said'emulsion and an anti-halation layer attached to said support, said anti-halation layer being ⁇ permeable to wave lengths from about to 700 [la comprising colloidal silver and a binding agent, and said support being colored with a dye covering the gap of absorption of said anti-halaton layer, and constituting a permanent coloration suitable in projecting the finished film.
  • a photographic article comprising a light sensitive emulsion, a support for said emulsion and an anti-halation layer attached to said support, said anti-halation layer being permeable to wave lengths from about 550 to 700 up. comprising colloidal silver and a binding agent, and said support being dyed with a mixture of light blue and -rh'odamin 8.
  • a photographic article comprising a light sensitive emulsion, a support for said emulsion and an anti-halation layer attached to said support comprising colloidal silver, a dye soluble in a photographic reversal bath, and a binding agent.
  • a photographic articlecompn'sing a light sensitive emulsion, a support for said emulsion and an anti-halation layer attached to said support comprising lcolloidal silver, the coupling product of lfl-aminonaphthol and dianisidine, and 'a binding agent.
  • a photographic article comprising a light sensitive emulsion, a support for said emulsion and an anti-halation layer attached to said support, said anti-halation layer being permeable to wavelengths from about 550 to 700 ya comprising colloidal silver and gelatin.
  • WILMLM SCHNEIDER WILMLM SCHNEIDER.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Paints Or Removers (AREA)
US608518A 1927-07-16 1932-04-30 Antihalation layer Expired - Lifetime US1971430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI31729D DE521194C (de) 1927-07-16 1927-07-16 Verfahren zur Herstellung von Lichthofschutzschichten fuer lichtempfindliches, insbesondere panchromatisches Material

Publications (1)

Publication Number Publication Date
US1971430A true US1971430A (en) 1934-08-28

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US608518A Expired - Lifetime US1971430A (en) 1927-07-16 1932-04-30 Antihalation layer

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US (1) US1971430A (en))
BE (2) BE352388A (en))
DE (1) DE521194C (en))
FR (2) FR656569A (en))
GB (2) GB294104A (en))

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806798A (en) * 1953-07-08 1957-09-17 Du Pont Process for preparing yellow colloidal silver
US2823122A (en) * 1951-06-30 1958-02-11 Polaroid Corp Photographic silver halide transfer process and the print-receiving products useful in connection therewith
US3020155A (en) * 1956-05-23 1962-02-06 Eastman Kodak Co Photographic diffusion transfer process
US3148063A (en) * 1959-12-18 1964-09-08 Eastman Kodak Co Light-sensitive element for preparing etching resist for gravure purposes
US4047956A (en) * 1975-11-17 1977-09-13 E. I. Du Pont De Nemours And Company Low coating weight silver halide element and process
US4477559A (en) * 1982-02-25 1984-10-16 Konishiroku Photo Industry Co., Ltd. Photosensitive silver halide color photographic materials
US20110086317A1 (en) * 2008-06-16 2011-04-14 Shanghai Chengshu Digital Technology Co., Ltd. Double-sided photosensitive color photographic paper and method of manufacturing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927052A (en) * 1953-03-20 1960-03-01 Us Movidyn Corp Process of producing oligodynamic metal biocides

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823122A (en) * 1951-06-30 1958-02-11 Polaroid Corp Photographic silver halide transfer process and the print-receiving products useful in connection therewith
US2806798A (en) * 1953-07-08 1957-09-17 Du Pont Process for preparing yellow colloidal silver
US3020155A (en) * 1956-05-23 1962-02-06 Eastman Kodak Co Photographic diffusion transfer process
US3148063A (en) * 1959-12-18 1964-09-08 Eastman Kodak Co Light-sensitive element for preparing etching resist for gravure purposes
US4047956A (en) * 1975-11-17 1977-09-13 E. I. Du Pont De Nemours And Company Low coating weight silver halide element and process
US4477559A (en) * 1982-02-25 1984-10-16 Konishiroku Photo Industry Co., Ltd. Photosensitive silver halide color photographic materials
US20110086317A1 (en) * 2008-06-16 2011-04-14 Shanghai Chengshu Digital Technology Co., Ltd. Double-sided photosensitive color photographic paper and method of manufacturing the same

Also Published As

Publication number Publication date
GB294104A (en) 1929-07-11
DE521194C (de) 1931-03-19
FR656569A (fr) 1929-05-10
BE352388A (en))
FR41770E (fr) 1933-04-13
GB385832A (en) 1933-01-05
BE388357A (en))

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