SG74291G - Picture reproduction system for producing a digital picture - Google Patents

Picture reproduction system for producing a digital picture

Info

Publication number
SG74291G
SG74291G SG742/91A SG74291A SG74291G SG 74291 G SG74291 G SG 74291G SG 742/91 A SG742/91 A SG 742/91A SG 74291 A SG74291 A SG 74291A SG 74291 G SG74291 G SG 74291G
Authority
SG
Singapore
Prior art keywords
lines
bars
picture
transportation
image carrier
Prior art date
Application number
SG742/91A
Original Assignee
Maurer Electronics Gmbh
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 Maurer Electronics Gmbh filed Critical Maurer Electronics Gmbh
Publication of SG74291G publication Critical patent/SG74291G/en

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)
  • Processing Or Creating Images (AREA)
  • Laser Beam Printer (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Television Signal Processing For Recording (AREA)
  • Record Information Processing For Printing (AREA)
  • Holo Graphy (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Color, Gradation (AREA)

Abstract

A method and information processing system for generating digital images by means of a laser printer (10) on an image carrier (7) is characterised by the fact that for the purpose of creating grey tone in the picture elements (4a to 4e), built up by pixels (5), of an image in each case one or several lines or bars (6, 6a, 6b, 8, 8a, 8b, 9, 9a, 9b, 9c, 11) are generated, the lines or bars extend in parallel with the direction of transportation (Y) of the image carrier (7), the bars or lines of all picture elements are flush with one another in the direction of transportation (Y) of the image carrier (7), the lines or bars have in the direction of printing lines of the laser printer (10) a total width which corresponds to the grey value of the picture element, and that the total width of the lines or bars is changed in steps which correspond to a fraction of the pixel width. The lines or bars of picture elements which are adjacent in the direction of transportation (Y) can also adjoin one another. <IMAGE>
SG742/91A 1986-04-15 1991-09-05 Picture reproduction system for producing a digital picture SG74291G (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86105185A EP0241569B1 (en) 1986-04-15 1986-04-15 Picture reproduction system for producing a digital picture

Publications (1)

Publication Number Publication Date
SG74291G true SG74291G (en) 1991-11-22

Family

ID=8195059

Family Applications (1)

Application Number Title Priority Date Filing Date
SG742/91A SG74291G (en) 1986-04-15 1991-09-05 Picture reproduction system for producing a digital picture

Country Status (6)

Country Link
EP (1) EP0241569B1 (en)
AT (1) ATE58987T1 (en)
AU (2) AU605131B2 (en)
DE (1) DE3676085D1 (en)
HK (1) HK37192A (en)
SG (1) SG74291G (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL263106A (en) * 1960-04-01
US3757036A (en) * 1972-04-05 1973-09-04 Eg & G Inc Electrostatic recording method and apparatus
DE3002781A1 (en) * 1980-01-26 1981-07-30 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel METHOD FOR IMPROVED IMAGE REPRODUCTION IN REPRODUCTION TECHNOLOGY
JPS56112175A (en) * 1980-02-08 1981-09-04 Fuji Photo Film Co Ltd Laser recording device
CH637513A5 (en) * 1980-06-16 1983-07-29 Radioelectrique Comp Ind APPARATUS FOR PHOTOGRAPHIC RECEPTION OF IMAGES TRANSMITTED BY MEANS OF A MODULATED ELECTRICAL SIGNAL.

Also Published As

Publication number Publication date
DE3676085D1 (en) 1991-01-17
EP0241569A1 (en) 1987-10-21
HK37192A (en) 1992-05-29
EP0241569B1 (en) 1990-12-05
AU605131B2 (en) 1991-01-10
ATE58987T1 (en) 1990-12-15
AU6389090A (en) 1991-01-03
AU6800487A (en) 1987-10-22

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