JPS56153332A - Laser recorder - Google Patents

Laser recorder

Info

Publication number
JPS56153332A
JPS56153332A JP5726580A JP5726580A JPS56153332A JP S56153332 A JPS56153332 A JP S56153332A JP 5726580 A JP5726580 A JP 5726580A JP 5726580 A JP5726580 A JP 5726580A JP S56153332 A JPS56153332 A JP S56153332A
Authority
JP
Japan
Prior art keywords
character
picture image
laser
recording
signal
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
JP5726580A
Other languages
Japanese (ja)
Inventor
Yuji Ohara
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP5726580A priority Critical patent/JPS56153332A/en
Publication of JPS56153332A publication Critical patent/JPS56153332A/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
    • H04N1/405—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
    • H04N1/4056—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 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)
  • Fax Reproducing Arrangements (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To make medium contrast recording of a picture image possible and prevent ground stains of a character by laser-recording the picture image by pulse number or pulse width modulation, and laser-recording the character by binary densities, in the case of recording the picture image and character with a laser. CONSTITUTION:Laser beam 6 from a semiconductor laser 1 goes through optical systems 2-4 and is scanned and recorded in recording paper 5. The picture image and character input signal 9 is digitized by an AD converter 11. This signal is changed over to a digital value conversion circuit 17 in the case of picture image information and to a comparator 33 in the case of character information by the change-over signal 16 in a switching circuit 15. The picture image information is converted to the pulse width modulating signal 28 and the pulse number modulating signal 30, which are inputted to a laser driving circuit 32. In the case of the character information, the character signal pulses 35 are latched in a latch circuit 36 and are inputted to the driving circuit 32.
JP5726580A 1980-04-30 1980-04-30 Laser recorder Pending JPS56153332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5726580A JPS56153332A (en) 1980-04-30 1980-04-30 Laser recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5726580A JPS56153332A (en) 1980-04-30 1980-04-30 Laser recorder

Publications (1)

Publication Number Publication Date
JPS56153332A true JPS56153332A (en) 1981-11-27

Family

ID=13050689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5726580A Pending JPS56153332A (en) 1980-04-30 1980-04-30 Laser recorder

Country Status (1)

Country Link
JP (1) JPS56153332A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189781A (en) * 1983-04-12 1984-10-27 Canon Inc Picture processing device
JPS59189780A (en) * 1983-04-12 1984-10-27 Canon Inc Picture processing device
JPS6019358A (en) * 1983-07-14 1985-01-31 Iwatsu Electric Co Ltd Picture overlay printer
JPS60190084A (en) * 1984-03-09 1985-09-27 Hitachi Medical Corp Picture recorder
US6259539B1 (en) 1990-06-11 2001-07-10 Minolta Co., Ltd. Facsimile device capable of properly recording halftone image and text image
USRE38942E1 (en) 1985-08-15 2006-01-24 Canon Inc. Apparatus for generating an image from a digital video signal

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189781A (en) * 1983-04-12 1984-10-27 Canon Inc Picture processing device
JPS59189780A (en) * 1983-04-12 1984-10-27 Canon Inc Picture processing device
JPH0510869B2 (en) * 1983-04-12 1993-02-10 Canon Kk
JPS6019358A (en) * 1983-07-14 1985-01-31 Iwatsu Electric Co Ltd Picture overlay printer
JPS60190084A (en) * 1984-03-09 1985-09-27 Hitachi Medical Corp Picture recorder
USRE38942E1 (en) 1985-08-15 2006-01-24 Canon Inc. Apparatus for generating an image from a digital video signal
US6259539B1 (en) 1990-06-11 2001-07-10 Minolta Co., Ltd. Facsimile device capable of properly recording halftone image and text image

Similar Documents

Publication Publication Date Title
US3918029A (en) Scanning system and method
TW234188B (en)
JPS56152373A (en) Laser recording device
JPS5733441A (en) Optical information recorder and reproducer
JPS5586265A (en) Recorder
JPS56153333A (en) Laser recorder
JPS56153331A (en) Laser recorder
GB2030816A (en) Arrangement for reducing information loss in a facsimile signal
JPS56153332A (en) Laser recorder
JPS5739977A (en) Heat-sensitive multi-tone recorder
GB1570799A (en) Binary coded digital optical record
JPS55105266A (en) Scanning type electronic recorder
JPS56123565A (en) Picture synthesis method
JPS5487129A (en) Format synthesizer
KR950020296A (en) Optical reader
JPS56113494A (en) Recording method for picture
JPS648046A (en) Image forming device
GB1304363A (en)
JPS5544247A (en) Recorder for video information
JPS56114132A (en) Event recorder
JPS54140414A (en) Picture signal reproducing method
JPS5514728A (en) Intermediate gradation recording system for picture recorder
JPS54160258A (en) Laser recording method capable of making additional writing
JPS54115254A (en) Image former
JPS5732175A (en) Additional-information recording method of facsimile equipment