JPS5791074A - Half tone forming method - Google Patents

Half tone forming method

Info

Publication number
JPS5791074A
JPS5791074A JP55166636A JP16663680A JPS5791074A JP S5791074 A JPS5791074 A JP S5791074A JP 55166636 A JP55166636 A JP 55166636A JP 16663680 A JP16663680 A JP 16663680A JP S5791074 A JPS5791074 A JP S5791074A
Authority
JP
Japan
Prior art keywords
tone
overlapped
forming method
half tone
dots
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
JP55166636A
Other languages
Japanese (ja)
Inventor
Susumu Sugiura
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP55166636A priority Critical patent/JPS5791074A/en
Publication of JPS5791074A publication Critical patent/JPS5791074A/en
Pending 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
    • H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper

Landscapes

  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Color, Gradation (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

PURPOSE:To improve resolution and to minimize recording time, by combining tone by dot number and overlapped part, in a half tone forming method by dot matrix. CONSTITUTION:The data relating to logarithmic compression by a pattern generator 21 is stored, and multi-tone is achieved, by combining the tone by the arrangement of dots not overlapped and the tone generated from the overlapped part through overlapped dots. Thus, since multi-tone can be reproduced with less dot number, the resolution can be increased and the reading record speed can be increased.
JP55166636A 1980-11-28 1980-11-28 Half tone forming method Pending JPS5791074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166636A JPS5791074A (en) 1980-11-28 1980-11-28 Half tone forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166636A JPS5791074A (en) 1980-11-28 1980-11-28 Half tone forming method

Publications (1)

Publication Number Publication Date
JPS5791074A true JPS5791074A (en) 1982-06-07

Family

ID=15834948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166636A Pending JPS5791074A (en) 1980-11-28 1980-11-28 Half tone forming method

Country Status (1)

Country Link
JP (1) JPS5791074A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137669A (en) * 1983-12-26 1985-07-22 Hitachi Ltd Thermal recorder
US4593297A (en) * 1983-07-20 1986-06-03 Ricoh Company, Ltd. Halftone image recording system
JPS61214665A (en) * 1985-03-20 1986-09-24 Canon Inc Image outputting system
JPS62285576A (en) * 1986-06-03 1987-12-11 Hitachi Ltd Half tone recording method
JPS6380681A (en) * 1986-09-25 1988-04-11 Fuji Xerox Co Ltd Forming method for halftone
US4775896A (en) * 1985-08-08 1988-10-04 Konishiroku Photo Industry Co., Ltd. Image recording apparatus
JP2012206364A (en) * 2011-03-29 2012-10-25 Seiko Epson Corp Inkjet lithographic method, and recorded matter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593297A (en) * 1983-07-20 1986-06-03 Ricoh Company, Ltd. Halftone image recording system
JPS60137669A (en) * 1983-12-26 1985-07-22 Hitachi Ltd Thermal recorder
JPH0418551B2 (en) * 1983-12-26 1992-03-27 Hitachi Ltd
JPS61214665A (en) * 1985-03-20 1986-09-24 Canon Inc Image outputting system
US4775896A (en) * 1985-08-08 1988-10-04 Konishiroku Photo Industry Co., Ltd. Image recording apparatus
JPS62285576A (en) * 1986-06-03 1987-12-11 Hitachi Ltd Half tone recording method
JPS6380681A (en) * 1986-09-25 1988-04-11 Fuji Xerox Co Ltd Forming method for halftone
JP2012206364A (en) * 2011-03-29 2012-10-25 Seiko Epson Corp Inkjet lithographic method, and recorded matter

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