CA1193310A - Scanning method and scanning diaphragm for suppressing moire in the scanning of rastered masters - Google Patents

Scanning method and scanning diaphragm for suppressing moire in the scanning of rastered masters

Info

Publication number
CA1193310A
CA1193310A CA000403319A CA403319A CA1193310A CA 1193310 A CA1193310 A CA 1193310A CA 000403319 A CA000403319 A CA 000403319A CA 403319 A CA403319 A CA 403319A CA 1193310 A CA1193310 A CA 1193310A
Authority
CA
Canada
Prior art keywords
master
raster
scanning
diaphragm
area
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.)
Expired
Application number
CA000403319A
Other languages
English (en)
French (fr)
Inventor
Eggert Jung
Heinrich Wadle
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.)
Dr Ing Rudolf Hell GmbH
Original Assignee
Dr Ing Rudolf Hell 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 Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Application granted granted Critical
Publication of CA1193310A publication Critical patent/CA1193310A/en
Expired 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
    • H04N1/40075—Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/029—Heads optically focused on only one picture element at a time

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Optical Communication System (AREA)
  • Tires In General (AREA)
  • Transceivers (AREA)
  • Holo Graphy (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Paper (AREA)
CA000403319A 1981-05-20 1982-05-19 Scanning method and scanning diaphragm for suppressing moire in the scanning of rastered masters Expired CA1193310A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3120030.3 1981-05-20
DE3120030 1981-05-20

Publications (1)

Publication Number Publication Date
CA1193310A true CA1193310A (en) 1985-09-10

Family

ID=6132776

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000403319A Expired CA1193310A (en) 1981-05-20 1982-05-19 Scanning method and scanning diaphragm for suppressing moire in the scanning of rastered masters

Country Status (10)

Country Link
US (1) US4516175A (forum.php)
EP (1) EP0065281B1 (forum.php)
JP (1) JPS57201232A (forum.php)
AT (1) ATE58986T1 (forum.php)
BR (1) BR8202982A (forum.php)
CA (1) CA1193310A (forum.php)
DE (1) DE3280270D1 (forum.php)
FI (1) FI821777A7 (forum.php)
SU (1) SU1367870A3 (forum.php)
YU (1) YU104182A (forum.php)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043970A (ja) * 1983-08-22 1985-03-08 Kyodo Printing Co Ltd 網点信号処理装置
NL8501846A (nl) * 1985-06-27 1987-01-16 Oce Nederland B V Patents And Werkwijze voor het reconstrueren van een grijswaardenbeeld uit een ditherbeeld.
NL8501844A (nl) * 1985-06-27 1987-01-16 Oce Nederland B V Patents And Werkwijze voor het vergroten/verkleinen van een ditherbeeld.
JPH0777418B2 (ja) * 1986-03-17 1995-08-16 株式会社東芝 画像処理装置
US4795602A (en) * 1986-03-19 1989-01-03 Pretchel David A Two pin shunt and molding method
US4930020A (en) * 1986-12-29 1990-05-29 Martin James F Facsimile transmission of photographic images
EP0276337B1 (de) * 1987-01-24 1989-11-29 Dr.-Ing. Rudolf Hell GmbH Blendenanordnung zur optoelektronischen Abtastung von Vorlagen
US4955824A (en) * 1987-04-14 1990-09-11 Pretchel David A Two pin shunt
US4926267A (en) * 1989-05-26 1990-05-15 Nynex Corporation Reproduction of halftone original with reduced moire
IL115166A (en) * 1991-04-30 1997-02-18 Scitex Corp Ltd Apparatus and method for descreening
US5515182A (en) * 1992-08-31 1996-05-07 Howtek, Inc. Rotary scanner
US6320680B1 (en) * 1998-06-18 2001-11-20 Digimarc Corporation Stochastic scanning documents to change moire effects
US8014024B2 (en) * 2005-03-02 2011-09-06 Xerox Corporation Gray balance for a printing system of multiple marking engines
US8259369B2 (en) 2005-06-30 2012-09-04 Xerox Corporation Color characterization or calibration targets with noise-dependent patch size or number
US8203768B2 (en) * 2005-06-30 2012-06-19 Xerox Corporaiton Method and system for processing scanned patches for use in imaging device calibration
US8711435B2 (en) * 2005-11-04 2014-04-29 Xerox Corporation Method for correcting integrating cavity effect for calibration and/or characterization targets
US7719716B2 (en) * 2005-11-04 2010-05-18 Xerox Corporation Scanner characterization for printer calibration
US7826090B2 (en) * 2005-12-21 2010-11-02 Xerox Corporation Method and apparatus for multiple printer calibration using compromise aim
US8102564B2 (en) * 2005-12-22 2012-01-24 Xerox Corporation Method and system for color correction using both spatial correction and printer calibration techniques
US8426749B2 (en) * 2007-05-09 2013-04-23 Fujifilm Corporation Electromagnetic shielding film and optical filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115545A (en) * 1962-09-18 1963-12-24 Radames K H Gebel Grain spacing to light intensity translator for photographic enlargements
US3775559A (en) * 1970-11-12 1973-11-27 Xerox Corp Aperture designs for facsimile scanning apparatus
JPS5597963A (en) * 1979-01-20 1980-07-25 Canon Inc Image forming device
US4336558A (en) * 1980-04-23 1982-06-22 American Hoechst Corp. Imaging system and method with reduced moire interference

Also Published As

Publication number Publication date
FI821777A0 (fi) 1982-05-19
EP0065281A2 (de) 1982-11-24
DE3280270D1 (de) 1991-01-17
EP0065281A3 (en) 1986-03-19
FI821777A7 (fi) 1982-11-21
US4516175A (en) 1985-05-07
EP0065281B1 (de) 1990-12-05
JPS57201232A (en) 1982-12-09
YU104182A (en) 1985-06-30
JPH0251172B2 (forum.php) 1990-11-06
BR8202982A (pt) 1983-05-03
ATE58986T1 (de) 1990-12-15
SU1367870A3 (ru) 1988-01-15

Similar Documents

Publication Publication Date Title
CA1193310A (en) Scanning method and scanning diaphragm for suppressing moire in the scanning of rastered masters
US5513016A (en) Method and apparatus for processing image signal
EP0144315B1 (en) Screen gravure engraving method for electromechanical engravers
EP0907282A2 (en) Method of and apparatus for correcting halftone-dot image data
US4680642A (en) Picture scanning and recording method with selection between two differently processed signals
DE69223172T2 (de) Abtastlesemethode
JPH01253366A (ja) ハイライト・シャドー濃度値の設定方法
GB2133948A (en) Generating screened half-tone images
US5087972A (en) Method of and apparatus for processing image signals at a point of interest based on image signal curvature
WO1986006903A1 (en) Digital image processing tone value sample selection
US4532422A (en) Electron holography microscope
US4613896A (en) Methods and apparatus for avoiding moire in color scanners for graphic art
GB2103050A (en) Method and apparatus for recording a reproduction picture having a substantially continuous tone in a picture scanning and recording system
JPS6148710B2 (forum.php)
GB1599680A (en) Variable magnification copying apparatus
US20070053612A1 (en) System and Method for Anti-Moire' Imaging in a One Dimensional Sensor Array
EP0895185A1 (en) Resolution enhancement on imagesetters
US6476936B1 (en) Method for scanning screened image master images
JP2585754B2 (ja) 画像入出力システム及び信号処理条件の設定方法
GB2061052A (en) Halftone picture reproduction
JP2575843B2 (ja) 画像入出力システム及び信号処理条件の自動設定方法
Levine et al. Electronic engraving
EP0416828B1 (en) Image scanning apparatus
JP2680125B2 (ja) 網目スクリーン形成方法
JP2659274B2 (ja) 画像信号処理方法

Legal Events

Date Code Title Description
MKEX Expiry