JPS57185199A - Endless plate - Google Patents

Endless plate

Info

Publication number
JPS57185199A
JPS57185199A JP5252881A JP5252881A JPS57185199A JP S57185199 A JPS57185199 A JP S57185199A JP 5252881 A JP5252881 A JP 5252881A JP 5252881 A JP5252881 A JP 5252881A JP S57185199 A JPS57185199 A JP S57185199A
Authority
JP
Japan
Prior art keywords
color depth
signal
plate
making
manuscript
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.)
Granted
Application number
JP5252881A
Other languages
Japanese (ja)
Other versions
JPH0220438B2 (en
Inventor
Masayuki Takei
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.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
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 Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP5252881A priority Critical patent/JPS57185199A/en
Publication of JPS57185199A publication Critical patent/JPS57185199A/en
Publication of JPH0220438B2 publication Critical patent/JPH0220438B2/ja
Granted 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
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

PURPOSE:To eliminate steps in color depth in the joing by using a manuscript that is formed by elongating its front end or rear end of a continuous picture pattern and inputting color depth signal of the manuscript in a computer and correcting the signal of the other end by means of the signal of the range that is formed by elongation. CONSTITUTION:The front end A and the rear end B of a manuscript 10 has a picture that is continued on both ends, and the pictures in the ranges AC and BC are the same; in other words a same picture is repeated, making the manuscript longer by that length. The manuscript is installed in a reading cylinder 11 for reading color depth to obtain color depth signal W by sampling with reading and calculation for color depth correction is made in a computer. Further, color depth signal for the range AC is corrected by using color depth signal in the extension range BD and color depth signal X is obtained, and it is converted into plate-making singal Y that is synchronized with the plate-making timing. After the signal Y is D/A coverted, it is sent to an engraving head to engrave a plate- making cylinder 45 to form a plate-making picture with engraving on a net-dot plate that has color depth corresponding to the color depth of the plate-making signal Y to obtain an endless plate 15.
JP5252881A 1981-04-07 1981-04-07 Endless plate Granted JPS57185199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5252881A JPS57185199A (en) 1981-04-07 1981-04-07 Endless plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5252881A JPS57185199A (en) 1981-04-07 1981-04-07 Endless plate

Publications (2)

Publication Number Publication Date
JPS57185199A true JPS57185199A (en) 1982-11-15
JPH0220438B2 JPH0220438B2 (en) 1990-05-09

Family

ID=12917244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5252881A Granted JPS57185199A (en) 1981-04-07 1981-04-07 Endless plate

Country Status (1)

Country Link
JP (1) JPS57185199A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132776A2 (en) * 2000-03-08 2001-09-12 Barco Graphics N.V. Method and apparatus for seamless imaging of sleeves as used in flexography
US7394570B2 (en) 2001-03-07 2008-07-01 Esko-Graphics Imaging Gmbh Method and apparatus for eliminating seams in screened image data for repetitive printing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143302A (en) * 1978-04-25 1979-11-08 Nissha Printing Method and plate for printing seamless band pattern on peripheral part of tridimensional body

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143302A (en) * 1978-04-25 1979-11-08 Nissha Printing Method and plate for printing seamless band pattern on peripheral part of tridimensional body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132776A2 (en) * 2000-03-08 2001-09-12 Barco Graphics N.V. Method and apparatus for seamless imaging of sleeves as used in flexography
EP1132776A3 (en) * 2000-03-08 2006-08-02 Esko-Graphics Method and apparatus for seamless imaging of sleeves as used in flexography
US7394570B2 (en) 2001-03-07 2008-07-01 Esko-Graphics Imaging Gmbh Method and apparatus for eliminating seams in screened image data for repetitive printing

Also Published As

Publication number Publication date
JPH0220438B2 (en) 1990-05-09

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