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JPS5767378A - Printer - Google Patents

Printer

Info

Publication number
JPS5767378A
JPS5767378A JP55143876A JP14387680A JPS5767378A JP S5767378 A JPS5767378 A JP S5767378A JP 55143876 A JP55143876 A JP 55143876A JP 14387680 A JP14387680 A JP 14387680A JP S5767378 A JPS5767378 A JP S5767378A
Authority
JP
Japan
Prior art keywords
black
pulse width
white
division
pulse
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
JP55143876A
Other languages
English (en)
Inventor
Shuji Kimura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55143876A priority Critical patent/JPS5767378A/ja
Publication of JPS5767378A publication Critical patent/JPS5767378A/ja
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40Picture signal circuits
    • H04N1/405Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055Halftoning, 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
    • H04N1/4056Halftoning, 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 the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Dot-Matrix Printers And Others (AREA)
JP55143876A 1980-10-15 1980-10-15 Printer Pending JPS5767378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55143876A JPS5767378A (en) 1980-10-15 1980-10-15 Printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55143876A JPS5767378A (en) 1980-10-15 1980-10-15 Printer

Publications (1)

Publication Number Publication Date
JPS5767378A true JPS5767378A (en) 1982-04-23

Family

ID=15349055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55143876A Pending JPS5767378A (en) 1980-10-15 1980-10-15 Printer

Country Status (1)

Country Link
JP (1) JPS5767378A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556918A (en) * 1982-12-27 1985-12-03 Kabushiki Kaisha Sakata Shokai Method and apparatus for generating screened halftone images
JPS61189567A (ja) * 1985-02-19 1986-08-23 Canon Inc 画像形成装置
JPS6388966A (ja) * 1986-10-01 1988-04-20 Mita Ind Co Ltd 階調表示方法
JPS6472850A (en) * 1987-09-14 1989-03-17 Canon Kk Image data processing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556918A (en) * 1982-12-27 1985-12-03 Kabushiki Kaisha Sakata Shokai Method and apparatus for generating screened halftone images
JPS61189567A (ja) * 1985-02-19 1986-08-23 Canon Inc 画像形成装置
JPS6388966A (ja) * 1986-10-01 1988-04-20 Mita Ind Co Ltd 階調表示方法
JPS6472850A (en) * 1987-09-14 1989-03-17 Canon Kk Image data processing apparatus

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