JPS5655257A - Scanning type plate making device - Google Patents

Scanning type plate making device

Info

Publication number
JPS5655257A
JPS5655257A JP13104979A JP13104979A JPS5655257A JP S5655257 A JPS5655257 A JP S5655257A JP 13104979 A JP13104979 A JP 13104979A JP 13104979 A JP13104979 A JP 13104979A JP S5655257 A JPS5655257 A JP S5655257A
Authority
JP
Japan
Prior art keywords
original
marking sheet
plate
picture
photosection
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.)
Pending
Application number
JP13104979A
Other languages
Japanese (ja)
Inventor
Toshiyuki Sakakibara
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP13104979A priority Critical patent/JPS5655257A/en
Publication of JPS5655257A publication Critical patent/JPS5655257A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To enable plate-making of a 2-mode picture on a same plate by scanning one time, by a method wherein a reproduction mode is automatically switched according to information on a marking sheet.
CONSTITUTION: A plate-making original plate 2, an original 2, and a marking sheet 4 are placed on a rotation drum 1. In the marking sheet 4, a part corresponding to a photosection of the original is all painted with a drawing material beforehand. With a rotation drum rotated, a density of the original and the marking sheet is read out by means of optical means 9 and 10. A signal of the original read out is amplified by an amplifying circuit 25, and is input to a picture signal reproduction mode control circuit 24. In the meantime, an output signal from the marking sheet is fed to a mode selection circuit 22, and is input to the picture reproduction mode control circuit 24 or the mode selection circuit 22. A photosection has an improved half-tone reproduction property, or an erased line drawing section is output and photoengraved so that it becomes a high contrast.
COPYRIGHT: (C)1981,JPO&Japio
JP13104979A 1979-10-11 1979-10-11 Scanning type plate making device Pending JPS5655257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13104979A JPS5655257A (en) 1979-10-11 1979-10-11 Scanning type plate making device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13104979A JPS5655257A (en) 1979-10-11 1979-10-11 Scanning type plate making device

Publications (1)

Publication Number Publication Date
JPS5655257A true JPS5655257A (en) 1981-05-15

Family

ID=15048810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13104979A Pending JPS5655257A (en) 1979-10-11 1979-10-11 Scanning type plate making device

Country Status (1)

Country Link
JP (1) JPS5655257A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150478A (en) * 1985-12-25 1987-07-04 Canon Inc Image information processing device
WO1990014230A1 (en) * 1989-05-24 1990-11-29 Dai Nippon Insatsu Kabushiki Kaisha Electronic photogravure apparatus
DE10017547B4 (en) * 1999-04-27 2005-06-16 Hell Gravure Systems Gmbh Method of engraving printing cylinders and engraving machine
WO2007018448A1 (en) * 2005-06-27 2007-02-15 Jury Veniaminovich Kuznetsov Method for adaptively screening a halftone original and a device for carrying out said method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150478A (en) * 1985-12-25 1987-07-04 Canon Inc Image information processing device
WO1990014230A1 (en) * 1989-05-24 1990-11-29 Dai Nippon Insatsu Kabushiki Kaisha Electronic photogravure apparatus
DE10017547B4 (en) * 1999-04-27 2005-06-16 Hell Gravure Systems Gmbh Method of engraving printing cylinders and engraving machine
WO2007018448A1 (en) * 2005-06-27 2007-02-15 Jury Veniaminovich Kuznetsov Method for adaptively screening a halftone original and a device for carrying out said method
US8031373B2 (en) 2005-06-27 2011-10-04 Jury Veniaminovich Kuznetsov Method for adaptively screening a continuous tone original and device for carrying out said method

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