US3576637A - Lith-type of emulsion containing pyrozolone - Google Patents

Lith-type of emulsion containing pyrozolone Download PDF

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Publication number
US3576637A
US3576637A US721175A US3576637DA US3576637A US 3576637 A US3576637 A US 3576637A US 721175 A US721175 A US 721175A US 3576637D A US3576637D A US 3576637DA US 3576637 A US3576637 A US 3576637A
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US
United States
Prior art keywords
compound
lith
alkylene oxide
silver halide
type
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
US721175A
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English (en)
Inventor
Tuneo Suga
Akio Oshima
Yuji Kuroda
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Application granted granted Critical
Publication of US3576637A publication Critical patent/US3576637A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • G03C1/043—Polyalkylene oxides; Polyalkylene sulfides; Polyalkylene selenides; Polyalkylene tellurides
    • 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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • 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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • 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
    • Y10S430/15—Lithographic emulsion

Definitions

  • This invention relates to light-sensitive photographic silver halide materials and particularly to photographic printing materials of the lith-type.
  • a light-sensitive photographic silver halide material which is used for halftone reproduction in the recent graphic arts is called as a lith-type film, for which are required various photographic properties including high image contrast, sharp halftone dots and good line image, broad latitude for development, high speed and high resolution.
  • the object of this invention is to provide a light-sensitive photographic silver halide material which has excellent photographic properties at the initial stage of infectious development and good contrast and halftone dot quality even at the stage after a normal period of development.
  • a light-sensitive silver halide photographic material comprising a support and a light-sensitive emulsion layer coated thereon, characterized by a compound of the general formula (wherein R is acylamino, arylamino, alkyl, aryl or aralkyl 15 radical and X is hydrogen atom or carboxyl or sulfonic group) is incorporated together with an alkylene oxide compound (molecular Weight GOO-8,000) in the lightsensitive emulsion layer or in the layer contiguous there- With Examples of pyrazolone compounds used in this invention include the following ones without limitation thereto.
  • alkylene oxide compounds referred to therein may be included the condensation products of alkylene oxide with water, aliphatic alcohols, glycols, fatty acids, aliphatic amines, phenols, hexitol ring dehydration products, etc. These alkylene oxide compounds may be used singly or in combination.
  • the amounts of the pyrazolone and alkylene oxide compounds to be added will vary depending on their types.
  • the pyrazolone compound is used in an amount of 10 mg. to 10 g. per one mole of silver halide and the alkylene oxide compound used in an amount of 10 mg. to 10 g. per one mole of silver halide.
  • the pyrozolone compound and the alkylene oxide compound may be added to the light-sensitive silver halide emulsion at any stage during the preparation of said emulsion. But the most preferable result is obtained when these compounds are added after ripening and before coating of said emulsion.
  • the compounds to be added can be introduced in the form of a solution in aqueous sodium hydroxide or in an organic solvent such as methanol.
  • the solution may be incorporated in a photographic layer adjacent to the emulsion layer, e.g. in a protective layer or an inter layer.
  • any type of silver halide emulsions are usable.
  • silver chloride, bromide and iodide emulsions or their mixtures are usable.
  • these emulsions may be sensitized chemically by sulfur sensitization (with ammonium thiosulfate), gold sensitization (with gold chloride) or optical sensitization (with cyan dye or merocyan dye).
  • Suitable hardening agents and surface active agents can be added to the emulsion.
  • the silver halide is dispersed in hydrophilic materials used as binders such as gelatine or polyvinyl alcohol.
  • the material of the invention can be treated with a conventionally known lith-developer.
  • a light-sensitive silver halide photographic material of this invention is useful as a lith-type film which has good image contrast, sharp ment and high photographic speed and high resolution.
  • the present invention is illustrated in the following example but not limited thereto.
  • the individual film to be tested was brought into close contact with a step-wedge and then subjected to exposure to irradiation through the stepwedge from an iodine lamp of 200 volt and 1 kw. as a light source.
  • the exposed film was then treated with a developing solution described hereafter.
  • relative speed was determined at the point where the density is 1.0.
  • halftone dot quality In the evaluation of halftone dot quality, the film to be tested was brought into contact with a magenta contact screen under suction in vacuum. Exposure to light and development were carried out in the same manner as in the above-mentioned sensitometry. The amount of the light exposure, however, was regulated so as to produce dot size 40-60%. The halftone dots formed were visually inspected by means of a microscope. Rating of halftone dot quality was made in term of sharpness. Rating 5 indicates that the dots have the highest sharpness, while rating 1 does that the dots have the lowest sharpness. Halftone dots between these two ratings are classified to ratings 4, 3 and 2.
  • Control 2 Polyethylene glycol (molecular weight: 1,000) 1 3 Alkylene oxide Polyethylene glycol compound alone. weight: 4,000), g 0. 05 4.. Condensate of ethylene oxide (molecular weight: 900) and lauryl alcohol, g 0. 4 6 Pyrazolone Compound 3, g 0. 1 6 compound Compound 5, g 0. 05 7 alone. Compound 7, g 0. 08 Polyethylene glycol 4,000), g 0. 05 8 Joint use of Compound 3, g 0. 1
  • alkylene oxide 9 compound and Polyethylene glycol (M.W. 1,000), g 1 pyrazolone Compound 5, g 0. 05 compound.
  • Developing treatment was carried out at 20 C. stepwise for 1.5 minutes, 2.5 minutes and 3.5 minutes by using the developing solution having the following composition:
  • the Samples 2, 3 and 4 to which only an alkylene oxide compound is added show decrease in sensitivity and halftone dot quality in the initial development.
  • the samples 5, 6 and 7 to which only a pyrazolone compound is added show less decrease in sensitivity than that observed in the above alkylene oxide addition samples, whereas the halftone dot quality decreased.
  • sensitivity and halftone dot quality of the samples 8, 9 and 10 in which an alkylene oxide derivative and a pyrazolone compound are included together according to the present invention are remarkably recovered.
  • the halftone dot quality of these samples do not show any decrease even after the treatment for 3.5 minutes.
  • a light-sensitive photographic silver halide material of the lith-type which comprises a support and a lightsensitive photographic silver halide emulsion layer coated thereon, a pyrazolone compound of the formula wherein R is an acylamino, arylamino, alkyl, aryl or aralkyl group and X is hydrogen atom, a carboxyl or a sulfonic acid group; and a condensation product of an alkylene oxide and a compound selected from the group consisting of water, an aliphatic alcohol, a glycol, an aliphatic acid, an aliphatic amine, a phenol and a hexitol ring dehydration product; said pyrazolone compound and condensation product are both contained in the emulsion layer or a layer adjacent thereto.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
US721175A 1967-04-20 1968-04-15 Lith-type of emulsion containing pyrozolone Expired - Lifetime US3576637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2478167 1967-04-20

Publications (1)

Publication Number Publication Date
US3576637A true US3576637A (en) 1971-04-27

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ID=12147708

Family Applications (1)

Application Number Title Priority Date Filing Date
US721175A Expired - Lifetime US3576637A (en) 1967-04-20 1968-04-15 Lith-type of emulsion containing pyrozolone

Country Status (4)

Country Link
US (1) US3576637A (en:Method)
BE (1) BE713912A (en:Method)
DE (1) DE1772233A1 (en:Method)
GB (1) GB1195134A (en:Method)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005046679A1 (en) * 2003-11-04 2005-05-26 Avidex Limited Immuno inhibitory pyrazolone compounds
US20090062289A1 (en) * 2004-08-09 2009-03-05 Avidex Limited Immunomodulating oxopyrrazolocinnolines as cd 80 inhibitors
US20090221590A1 (en) * 2006-02-22 2009-09-03 Medigene Limited Salt of cd 80 antagonist
US20090312334A1 (en) * 2003-03-14 2009-12-17 Medigene Limited Immunomodulating Heterocyclic Compounds

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090312334A1 (en) * 2003-03-14 2009-12-17 Medigene Limited Immunomodulating Heterocyclic Compounds
US8309552B2 (en) 2003-03-14 2012-11-13 Medigene Ag Immunomodulating heterocyclic compounds
WO2005046679A1 (en) * 2003-11-04 2005-05-26 Avidex Limited Immuno inhibitory pyrazolone compounds
US20070213345A1 (en) * 2003-11-04 2007-09-13 Avidex Limited Immuno Inhibitory Pyrazolone Compounds
US7816361B2 (en) 2003-11-04 2010-10-19 Medigene Limited Immuno inhibitory pyrazolone compounds
US20100331342A1 (en) * 2003-11-04 2010-12-30 Medigene Limited Immuno Inhibitory Pyrazolone Compounds
US8163757B2 (en) 2003-11-04 2012-04-24 Medigene Ag Immuno inhibitory pyrazolone compounds
US20090062289A1 (en) * 2004-08-09 2009-03-05 Avidex Limited Immunomodulating oxopyrrazolocinnolines as cd 80 inhibitors
US7932253B2 (en) 2004-08-09 2011-04-26 Medigene Ag Immunomodulating oxopyrrazolocinnolines as CD80 inhibitors
US20090221590A1 (en) * 2006-02-22 2009-09-03 Medigene Limited Salt of cd 80 antagonist

Also Published As

Publication number Publication date
GB1195134A (en) 1970-06-17
BE713912A (en:Method) 1968-09-16
DE1772233A1 (de) 1972-01-05

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