GB1306874A – Method of making photographic images
– Google Patents
GB1306874A – Method of making photographic images
– Google Patents
Method of making photographic images
Info
Publication number
GB1306874A
GB1306874A
GB1954570A
GB1954570A
GB1306874A
GB 1306874 A
GB1306874 A
GB 1306874A
GB 1954570 A
GB1954570 A
GB 1954570A
GB 1954570 A
GB1954570 A
GB 1954570A
GB 1306874 A
GB1306874 A
GB 1306874A
Authority
GB
United Kingdom
Prior art keywords
image
photo
silver
diazotype
grainy
Prior art date
1969-04-24
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
GB1954570A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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.)
1969-04-24
Filing date
1970-04-23
Publication date
1973-02-14
1970-04-23
Application filed by Eastman Kodak Co
filed
Critical
Eastman Kodak Co
1973-02-14
Publication of GB1306874A
publication
Critical
patent/GB1306874A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
G03F5/00—Screening processes; Screens therefor
G03F5/02—Screening processes; Screens therefor by projection methods
Abstract
1306874 Photographic dot images EASTMAN KODAK CO 23 April 1970 [24 April 1969] 19545/70 Heading G2M A random dot image (e.g. suitable for use in preparing a half-tone printing plate) is prepared by (1) exposing a first photographic silver halide emulsion to a continuous tone original image, (2) processing to give a grainy developed silver image, (3) exposing a second photo-sensitive layer to the silver image, and (4) processing the exposed layer to a gamma of at least 4. The grainy silver image may be produced by (a) overexposing and over-developing (b) high-temperature development, (c) using a high-speed coarse grain film, or (d) using a high-activity developer. The second photo-sensitive layer may be in a photo-conductive, lithographic, diazotype or silver halide “lith” material. The random dot image or a positive made therefrom may be used to expose a high-contrast diazotype or lithographic plate material.
GB1954570A
1969-04-24
1970-04-23
Method of making photographic images
Expired
GB1306874A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US81908869A
1969-04-24
1969-04-24
Publications (1)
Publication Number
Publication Date
GB1306874A
true
GB1306874A
(en)
1973-02-14
Family
ID=25227171
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1954570A
Expired
GB1306874A
(en)
1969-04-24
1970-04-23
Method of making photographic images
Country Status (5)
Country
Link
US
(1)
US3655381A
(en)
BE
(1)
BE749439A
(en)
DE
(1)
DE2020069A1
(en)
FR
(1)
FR2046407A5
(en)
GB
(1)
GB1306874A
(en)
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4011085A
(en)
*
1974-10-02
1977-03-08
Rapoport Printing Corporation
Lithographic printing process
DE2752685C3
(en)
*
1977-11-25
1981-12-17
Vsesojuznyj gosudarstvennyj naučno-issledovatel’skij i proektnyj institut chimiko-fotografičeskoj promyšlennosti, GOSNIICHIMFOTOPROEKT, Moskva
Method for generating a raster image with an irregular structure
US4180402A
(en)
*
1977-11-28
1979-12-25
Vsesojuzny Gosudarstvenny Nauchno-Issiedovatelsky I Proekthyinstitut Khimo-Forograficheskoi Promyshlennosti
Process for obtaining half-tone picture of irregular structure
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1300729A
(en)
*
1916-03-17
1919-04-15
Huebner Bleistein Patents Co
Process of preparing grained-tone photographic negatives and positives and producing printing-plates therefrom.
BE394468A
(en)
*
1933-01-16
DE938233C
(en)
*
1953-03-11
1956-01-26
Kalle & Co Ag
Photosensitive material for the photomechanical production of printing forms
US3030209A
(en)
*
1958-07-02
1962-04-17
Eastman Kodak Co
High-contrast photographic silver chloride emulsions and method of processing
US3128180A
(en)
*
1958-07-02
1964-04-07
Eastman Kodak Co
Hardened high-contrast photographic silver chloride emulsions and method of processing
US3121010A
(en)
*
1961-03-22
1964-02-11
Rca Corp
Electrostatic printing
1969
1969-04-24
US
US819088A
patent/US3655381A/en
not_active
Expired – Lifetime
1970
1970-04-23
BE
BE749439D
patent/BE749439A/en
unknown
1970-04-23
GB
GB1954570A
patent/GB1306874A/en
not_active
Expired
1970-04-23
FR
FR7014790A
patent/FR2046407A5/fr
not_active
Expired
1970-04-24
DE
DE19702020069
patent/DE2020069A1/en
active
Pending
Also Published As
Publication number
Publication date
US3655381A
(en)
1972-04-11
DE2020069A1
(en)
1970-10-29
BE749439A
(en)
1970-10-01
FR2046407A5
(en)
1971-03-05
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Legal Events
Date
Code
Title
Description
1973-06-27
PS
Patent sealed [section 19, patents act 1949]
1974-11-13
PLNP
Patent lapsed through nonpayment of renewal fees
