DE69424490T2 - Laserdrucksystem - Google Patents

Laserdrucksystem

Info

Publication number
DE69424490T2
DE69424490T2 DE69424490T DE69424490T DE69424490T2 DE 69424490 T2 DE69424490 T2 DE 69424490T2 DE 69424490 T DE69424490 T DE 69424490T DE 69424490 T DE69424490 T DE 69424490T DE 69424490 T2 DE69424490 T2 DE 69424490T2
Authority
DE
Germany
Prior art keywords
printing system
laser printing
laser
printing
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 - Fee Related
Application number
DE69424490T
Other languages
English (en)
Other versions
DE69424490D1 (de
Inventor
Sanwal Prasad Sarraf
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of DE69424490D1 publication Critical patent/DE69424490D1/de
Publication of DE69424490T2 publication Critical patent/DE69424490T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/44—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/1204—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers involving the fast moving of an optical beam in the main scanning direction
    • G06K15/1209—Intensity control of the optical beam
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/17—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa the scanning speed being dependent on content of picture
    • 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
    • H04N1/40025—Circuits exciting or modulating particular heads for reproducing continuous tone value scales
    • H04N1/40037—Circuits exciting or modulating particular heads for reproducing continuous tone value scales the reproducing element being a laser
    • 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)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electronic Switches (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Laser Beam Printer (AREA)
  • Dot-Matrix Printers And Others (AREA)
DE69424490T 1993-09-30 1994-09-22 Laserdrucksystem Expired - Fee Related DE69424490T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/129,892 US5517231A (en) 1993-09-30 1993-09-30 Apparatus and method for increasing the productivity of a thermal printing apparatus for the production of finely detailed images of photographic quality

Publications (2)

Publication Number Publication Date
DE69424490D1 DE69424490D1 (de) 2000-06-21
DE69424490T2 true DE69424490T2 (de) 2001-01-18

Family

ID=22442082

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69424490T Expired - Fee Related DE69424490T2 (de) 1993-09-30 1994-09-22 Laserdrucksystem

Country Status (4)

Country Link
US (1) US5517231A (de)
EP (1) EP0646467B1 (de)
JP (1) JPH07164652A (de)
DE (1) DE69424490T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3239614B2 (ja) * 1994-05-30 2001-12-17 岩崎通信機株式会社 磁気印写装置における印字濃度調整方法
US5874981A (en) * 1995-09-19 1999-02-23 Eastman Kodak Company Combined pulse-width and amplitude modulation of exposing laser beam for thermal dye transfer
US5841459A (en) * 1995-11-02 1998-11-24 Eastman Kodak Company Color-to-color registration in thermal printers by adjusting image resolution based on image content
US6239829B1 (en) * 1998-11-18 2001-05-29 Xerox Corporation Systems and methods for object-optimized control of laser power
WO2005114979A2 (en) * 2004-05-19 2005-12-01 Intense Limited Thermal printing with laser activation
EP2193034B1 (de) * 2007-09-25 2012-08-29 Kodak Graphic Communications Canada Company Bidirektionale bebilderung mit variierenden geschwindigkeiten
WO2017013242A1 (en) * 2015-07-23 2017-01-26 Koninklijke Philips N.V. Laser printing system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229033A (en) * 1963-02-26 1966-01-11 Artzt Maurice Variable velocity halftone facsimile system
US3751587A (en) * 1972-01-20 1973-08-07 Saxon Ind Inc Laser printing system
JPS5782057A (en) * 1980-11-11 1982-05-22 Fuji Photo Film Co Ltd Density adjusting method in recording of picture
US4447830A (en) * 1981-09-10 1984-05-08 Xerox Corporation Image scanning apparatus and method
JPH0773318B2 (ja) * 1985-03-08 1995-08-02 株式会社日立製作所 画像情報装置
US4833124A (en) * 1987-12-04 1989-05-23 Eastman Kodak Company Process for increasing the density of images obtained by thermal dye transfer
US5053619A (en) * 1988-08-12 1991-10-01 Hitachi, Ltd. Variable density scanning apparatus
JPH0298457A (ja) * 1988-10-05 1990-04-10 Hitachi Ltd 半導体レーザ記録装置
US5047871A (en) * 1989-05-23 1991-09-10 Hewlett-Packard Company Direction scaling method and apparatus for image scanning resolution control
US5109283A (en) * 1990-03-02 1992-04-28 Xerographic Laser Images Corporation Raster scanning engine driver which independently locates engine drive signal transistors within each cell area
US5258780A (en) * 1990-05-09 1993-11-02 Ricoh Company, Ltd. Beam recorder forming low density dots
US5257041A (en) * 1991-06-28 1993-10-26 Eastman Kodak Company Method and circuit for driving an electromechanical device rapidly with great precision
US5241328A (en) * 1991-09-20 1993-08-31 Eastman Kodak Company Apparatus and method for thermal printing of finely detailed images of photographic quality

Also Published As

Publication number Publication date
JPH07164652A (ja) 1995-06-27
EP0646467B1 (de) 2000-05-17
EP0646467A2 (de) 1995-04-05
EP0646467A3 (de) 1998-02-11
US5517231A (en) 1996-05-14
DE69424490D1 (de) 2000-06-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee