GB656235A - Improvements in or relating to printing plates, contrast images for making printing plates and method for making the images - Google Patents

Improvements in or relating to printing plates, contrast images for making printing plates and method for making the images

Info

Publication number
GB656235A
GB656235A GB19108/47A GB1910847A GB656235A GB 656235 A GB656235 A GB 656235A GB 19108/47 A GB19108/47 A GB 19108/47A GB 1910847 A GB1910847 A GB 1910847A GB 656235 A GB656235 A GB 656235A
Authority
GB
United Kingdom
Prior art keywords
printing plates
making
dots
images
tone
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
GB19108/47A
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.)
Interchemical Corp
Original Assignee
Interchemical Corp
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
Priority claimed from US343962A external-priority patent/US2294643A/en
Application filed by Interchemical Corp filed Critical Interchemical Corp
Publication of GB656235A publication Critical patent/GB656235A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • H04N1/036—Details of scanning heads ; Means for illuminating the original for picture information reproduction for optical reproduction
    • 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
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/68—Preparation processes not covered by groups G03F1/20 - G03F1/50
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4058—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern with details for producing a halftone screen at an oblique angle
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

656,235. Photo-mechanical printing plates. INTERCHEMICAL CORPORATION. July 17, 1947, No. 19108. Convention date, July 5, 1940. [Class 98 (ii)] [Also in Group XL (b)] The continuous variation of tone of an original representation is reproduced by photoelectric scanning and reproducing apparatus (see Group XL (b)) in the form of a recorded photographic image, or a printing plate made therefrom, by means of spaced rectangular dots of black and white on light and dark backgrounds respectively, in which both dimensions of the dots and the spacing between the centres of the dots are varied with the tone of the original. The image plates may be used in typographical or lithographical processes, Figs. 1, 2, 3 (not shown), and in the case of an intaglio process, Figs. 4, 5, white dividing lines 5a of small width are formed in the dark areas to produce narrow ridges 5 in the intaglio plate.
GB19108/47A 1940-07-05 1947-07-17 Improvements in or relating to printing plates, contrast images for making printing plates and method for making the images Expired GB656235A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US343962A US2294643A (en) 1940-07-05 1940-07-05 Method and apparatus for reproducing pictures
US406121A US2294645A (en) 1940-07-05 1941-08-09 Printing plate
US406120A US2294644A (en) 1940-07-05 1941-08-09 Contrast images for making printing plates

Publications (1)

Publication Number Publication Date
GB656235A true GB656235A (en) 1951-08-15

Family

ID=27407590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19108/47A Expired GB656235A (en) 1940-07-05 1947-07-17 Improvements in or relating to printing plates, contrast images for making printing plates and method for making the images

Country Status (3)

Country Link
US (2) US2294644A (en)
FR (1) FR950434A (en)
GB (1) GB656235A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189752A (en) * 1973-11-12 1980-02-19 Printing Developments, Inc. Electronic screening with galvanometer recorders

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552209A (en) * 1947-09-17 1951-05-08 Eastman Kodak Co Fusion photothermography
US2579824A (en) * 1949-07-11 1951-12-25 Thurman W Horn Oil testing chart and holder therefor
DE946329C (en) * 1952-03-20 1956-07-26 Hell Rudolf Dr Ing Fa Process for the production of screened clichés using the methods of image telegraphy
LU39915A1 (en) * 1960-04-01
US4758886A (en) * 1986-07-24 1988-07-19 Minnesota Mining And Manufacturing Company Optimal color half-tone patterns for raster-scan images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189752A (en) * 1973-11-12 1980-02-19 Printing Developments, Inc. Electronic screening with galvanometer recorders

Also Published As

Publication number Publication date
US2294644A (en) 1942-09-01
US2294645A (en) 1942-09-01
FR950434A (en) 1949-09-27

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