EP1176545A3 - Laser imaging with variable dot size - Google Patents

Laser imaging with variable dot size Download PDF

Info

Publication number
EP1176545A3
EP1176545A3 EP01114875A EP01114875A EP1176545A3 EP 1176545 A3 EP1176545 A3 EP 1176545A3 EP 01114875 A EP01114875 A EP 01114875A EP 01114875 A EP01114875 A EP 01114875A EP 1176545 A3 EP1176545 A3 EP 1176545A3
Authority
EP
European Patent Office
Prior art keywords
dot size
laser imaging
variable dot
laser
variable
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.)
Granted
Application number
EP01114875A
Other languages
German (de)
French (fr)
Other versions
EP1176545B1 (en
EP1176545A2 (en
Inventor
Bernd Vosseler
Bernard Dr. Beier
Uwe Ernst
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1176545A2 publication Critical patent/EP1176545A2/en
Publication of EP1176545A3 publication Critical patent/EP1176545A3/en
Application granted granted Critical
Publication of EP1176545B1 publication Critical patent/EP1176545B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/447—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 arrays of radiation sources
    • B41J2/45—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 arrays of radiation sources using light-emitting diode [LED] or laser arrays
    • B41J2/451—Special optical means therefor, e.g. lenses, mirrors, focusing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1075—Mechanical aspects of on-press plate preparation
    • 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
    • B41J2/442—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 using lasers
    • 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
    • B41J2/47—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 the combination of scanning and modulation of light

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Laser Beam Printer (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Facsimile Heads (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Laser Surgery Devices (AREA)
  • Electronic Switches (AREA)

Abstract

A laser controller (426) varies the laser power or illumination intensity as a function of the spacing between laser source (40) and image point (410).
EP01114875A 2000-07-24 2001-06-29 Laser imaging with variable dot size Expired - Lifetime EP1176545B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10035848 2000-07-24
DE10035848A DE10035848A1 (en) 2000-07-24 2000-07-24 Laser imaging with variable print spot size

Publications (3)

Publication Number Publication Date
EP1176545A2 EP1176545A2 (en) 2002-01-30
EP1176545A3 true EP1176545A3 (en) 2003-08-06
EP1176545B1 EP1176545B1 (en) 2005-12-28

Family

ID=7649933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01114875A Expired - Lifetime EP1176545B1 (en) 2000-07-24 2001-06-29 Laser imaging with variable dot size

Country Status (10)

Country Link
US (1) US6836282B2 (en)
EP (1) EP1176545B1 (en)
JP (1) JP4933001B2 (en)
CN (1) CN1199802C (en)
AT (1) ATE314697T1 (en)
CA (1) CA2350448C (en)
CZ (1) CZ297292B6 (en)
DE (2) DE10035848A1 (en)
HK (1) HK1043090B (en)
IL (1) IL144484A0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212937B4 (en) * 2002-03-22 2009-12-17 Heidelberger Druckmaschinen Ag Method for adjusting the image line width in an imagesetter
CA2448193A1 (en) 2002-12-09 2004-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Method and device for imaging a printing form
US7219453B2 (en) * 2003-01-24 2007-05-22 Baker Robert E Floatdown implement for small vehicles
CN1824499A (en) * 2005-02-24 2006-08-30 海德堡印刷机械股份公司 Method of producing a printing form
JP6051535B2 (en) * 2011-02-28 2016-12-27 株式会社リコー Image processing method and image processing apparatus
CN103331988B (en) * 2013-06-19 2015-02-18 汪海洋 Plate-making method of flexible printing plate and main exposure device
DE102016208479A1 (en) * 2016-05-18 2017-11-23 Roth + Weber Gmbh Electrophotographic large format color printer
CN114734636B (en) * 2022-04-20 2023-12-19 浙江正向增材制造有限公司 Photo-curing printing device and printing method
CN114710628B (en) * 2022-04-21 2023-12-05 深圳市先地图像科技有限公司 Image exposure method, computer equipment and storage medium

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146068A (en) * 1983-02-08 1984-08-21 Nippon Telegr & Teleph Corp <Ntt> Recording method
US4612555A (en) * 1983-07-08 1986-09-16 Hitachi, Ltd. Laser beam scanner apparatus
EP0476863A1 (en) * 1990-09-17 1992-03-25 Kabushiki Kaisha Toshiba Method and printer for printing an image formed of 2-dimensionally arranged pixels
EP0679510A1 (en) * 1994-04-26 1995-11-02 Schablonentechnik Kufstein Aktiengesellschaft Method and device for fabricating a screener
WO1997027065A1 (en) * 1996-01-24 1997-07-31 Scitex Corporation Ltd. An imaging apparatus for exposing a printing member and printing members therefor
EP0818858A2 (en) * 1996-07-08 1998-01-14 Presstek, Inc. Diode-pumped laser system and method
EP0922573A2 (en) * 1997-12-12 1999-06-16 Presstek, Inc. Method and apparatus for diode-laser imaging with compensation for output variations

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3181050B2 (en) * 1990-04-20 2001-07-03 株式会社日立製作所 Projection exposure method and apparatus
DK69492D0 (en) * 1992-05-26 1992-05-26 Purup Prepress As DEVICE FOR EXPOSURE OF A MEDIUM, DEVICE FOR POINT EXPOSURE OF A MEDIA, AND A DEVICE FOR HOLDING A MEDIA
US5819661A (en) * 1995-01-23 1998-10-13 Presstek, Inc. Method and apparatus for laser imaging of lithographic printing members by thermal non-ablative transfer
US5666577A (en) * 1995-08-31 1997-09-09 Eastman Kodak Company System for switching pointing indices in laser aimed cameras
US5764272A (en) 1995-09-12 1998-06-09 Eastman Kodak Company Autofocus mechanism for laser imager
JPH1024546A (en) * 1996-07-10 1998-01-27 Sony Corp Laser plate making apparatus and laser plate making method
JPH1034866A (en) * 1996-07-24 1998-02-10 Sony Corp Laser plate making apparatus with autofocus function and method for removing disturbance of autofocus-detecting laser
DE19848455A1 (en) * 1998-10-21 2000-04-27 Heidelberger Druckmasch Ag Device for adjusting the position of a cylindrical image carrier in relation to a scanning head

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146068A (en) * 1983-02-08 1984-08-21 Nippon Telegr & Teleph Corp <Ntt> Recording method
US4612555A (en) * 1983-07-08 1986-09-16 Hitachi, Ltd. Laser beam scanner apparatus
EP0476863A1 (en) * 1990-09-17 1992-03-25 Kabushiki Kaisha Toshiba Method and printer for printing an image formed of 2-dimensionally arranged pixels
EP0679510A1 (en) * 1994-04-26 1995-11-02 Schablonentechnik Kufstein Aktiengesellschaft Method and device for fabricating a screener
WO1997027065A1 (en) * 1996-01-24 1997-07-31 Scitex Corporation Ltd. An imaging apparatus for exposing a printing member and printing members therefor
EP0818858A2 (en) * 1996-07-08 1998-01-14 Presstek, Inc. Diode-pumped laser system and method
EP0922573A2 (en) * 1997-12-12 1999-06-16 Presstek, Inc. Method and apparatus for diode-laser imaging with compensation for output variations

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 278 (P - 322) 19 December 1984 (1984-12-19) *

Also Published As

Publication number Publication date
ATE314697T1 (en) 2006-01-15
CA2350448A1 (en) 2002-01-24
CA2350448C (en) 2007-01-09
DE50108510D1 (en) 2006-02-02
HK1043090A1 (en) 2002-09-06
EP1176545B1 (en) 2005-12-28
US20020044196A1 (en) 2002-04-18
IL144484A0 (en) 2002-05-23
JP4933001B2 (en) 2012-05-16
EP1176545A2 (en) 2002-01-30
US6836282B2 (en) 2004-12-28
CN1199802C (en) 2005-05-04
CZ297292B6 (en) 2006-10-11
HK1043090B (en) 2005-12-09
CZ20012612A3 (en) 2002-03-13
JP2002127355A (en) 2002-05-08
CN1334199A (en) 2002-02-06
DE10035848A1 (en) 2002-02-07

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