NL152670B - GRID PHOTOGRAPHIC IMAGE REPRODUCTION DEVICE, EQUIPPED WITH ORGANS FOR MOVING CROSS-DUTY ON THE SCANNING LINE AND SIZING THE SCANNING LIGHT SPOT. - Google Patents

GRID PHOTOGRAPHIC IMAGE REPRODUCTION DEVICE, EQUIPPED WITH ORGANS FOR MOVING CROSS-DUTY ON THE SCANNING LINE AND SIZING THE SCANNING LIGHT SPOT.

Info

Publication number
NL152670B
NL152670B NL6804028A NL6804028A NL152670B NL 152670 B NL152670 B NL 152670B NL 6804028 A NL6804028 A NL 6804028A NL 6804028 A NL6804028 A NL 6804028A NL 152670 B NL152670 B NL 152670B
Authority
NL
Netherlands
Prior art keywords
sizing
organs
duty
grid
light spot
Prior art date
Application number
NL6804028A
Other languages
Dutch (nl)
Other versions
NL6804028A (en
Original Assignee
Printing Dev 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 Printing Dev Inc filed Critical Printing Dev Inc
Publication of NL6804028A publication Critical patent/NL6804028A/xx
Publication of NL152670B publication Critical patent/NL152670B/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
NL6804028A 1967-03-22 1968-03-21 GRID PHOTOGRAPHIC IMAGE REPRODUCTION DEVICE, EQUIPPED WITH ORGANS FOR MOVING CROSS-DUTY ON THE SCANNING LINE AND SIZING THE SCANNING LIGHT SPOT. NL152670B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62503867A 1967-03-22 1967-03-22

Publications (2)

Publication Number Publication Date
NL6804028A NL6804028A (en) 1968-09-23
NL152670B true NL152670B (en) 1977-03-15

Family

ID=24504320

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6804028A NL152670B (en) 1967-03-22 1968-03-21 GRID PHOTOGRAPHIC IMAGE REPRODUCTION DEVICE, EQUIPPED WITH ORGANS FOR MOVING CROSS-DUTY ON THE SCANNING LINE AND SIZING THE SCANNING LIGHT SPOT.

Country Status (7)

Country Link
CH (1) CH486322A (en)
DE (1) DE1772022C3 (en)
DK (1) DK145136C (en)
FR (1) FR1605174A (en)
GB (1) GB1206681A (en)
NL (1) NL152670B (en)
SE (1) SE326892B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189752A (en) * 1973-11-12 1980-02-19 Printing Developments, Inc. Electronic screening with galvanometer recorders
US3983319A (en) * 1973-11-12 1976-09-28 Printing Developments, Inc. Electronic screening for image reproduction
DE2844158C3 (en) 1978-10-10 1981-10-15 Burda Verwaltungs Kg Schutterwald, 7600 Offenburg Process for the reproduction of original documents which are scanned for their color content according to a three-range process
FR2467078A1 (en) * 1979-10-11 1981-04-17 Machulka Grigory Laser beam producing printing blocks - synchronously scans and modulates for line and half tone structures using sawtooth pulse generator and comparator
ATE25453T1 (en) * 1981-10-19 1987-02-15 Hell Rudolf Dr Ing Gmbh METHOD OF IMPROVING CONTRAST ENHANCEMENT.
US4701808A (en) * 1983-11-01 1987-10-20 Canon Kabushiki Kaisha Image processing apparatus with variable magnification and gray level processing
DE4038057C2 (en) * 1990-11-29 1997-05-15 Hell Ag Linotype Process for the generation and storage of digitized density threshold values for screening a halftone image template

Also Published As

Publication number Publication date
DE1772022B2 (en) 1975-03-06
DE1772022C3 (en) 1975-10-16
DK145136B (en) 1982-09-13
SE326892B (en) 1970-08-03
DE1772022A1 (en) 1970-08-06
FR1605174A (en) 1973-04-16
DK145136C (en) 1983-03-28
GB1206681A (en) 1970-09-30
NL6804028A (en) 1968-09-23
CH486322A (en) 1970-02-28

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: PRINTING