EP0331138B1 - Drucker - Google Patents

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Info

Publication number
EP0331138B1
EP0331138B1 EP89103562A EP89103562A EP0331138B1 EP 0331138 B1 EP0331138 B1 EP 0331138B1 EP 89103562 A EP89103562 A EP 89103562A EP 89103562 A EP89103562 A EP 89103562A EP 0331138 B1 EP0331138 B1 EP 0331138B1
Authority
EP
European Patent Office
Prior art keywords
printer
printing elements
printing
energy
paper
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 - Lifetime
Application number
EP89103562A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0331138A3 (en
EP0331138A2 (de
Inventor
Wolf-Heider Rein
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.)
Alcatel Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Alcatel SEL AG
Alcatel NV
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 Alcatel SEL AG, Alcatel NV filed Critical Alcatel SEL AG
Publication of EP0331138A2 publication Critical patent/EP0331138A2/de
Publication of EP0331138A3 publication Critical patent/EP0331138A3/de
Application granted granted Critical
Publication of EP0331138B1 publication Critical patent/EP0331138B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/3551—Block driving
    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/36—Print density control

Definitions

  • the invention is based on a printer according to the preamble of claim 1.
  • the advantages achieved by the invention consist in particular in that when using a commercially available, line-wide printhead, the raster spacing given by the pitch of the printing elements is doubled without noticeably worsening the resolution.
  • the thus doubled spacing of the pixels among themselves enables a corresponding variation of the pixel area up to twice the size of a printing element.
  • the pressure elements, the respective energy in several Steps of different energy content supplied. This is preferably done in the time of a raster line advance of the record carrier.
  • the principle can be applied to all printers in which the pixel size can be influenced by the energy supply to the printing elements.

Landscapes

  • Electronic Switches (AREA)
EP89103562A 1988-03-03 1989-03-01 Drucker Expired - Lifetime EP0331138B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806935A DE3806935A1 (de) 1988-03-03 1988-03-03 Drucker
DE3806935 1988-03-03

Publications (3)

Publication Number Publication Date
EP0331138A2 EP0331138A2 (de) 1989-09-06
EP0331138A3 EP0331138A3 (en) 1990-08-29
EP0331138B1 true EP0331138B1 (de) 1993-06-09

Family

ID=6348761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103562A Expired - Lifetime EP0331138B1 (de) 1988-03-03 1989-03-01 Drucker

Country Status (5)

Country Link
US (1) US4952085A (ja)
EP (1) EP0331138B1 (ja)
JP (1) JPH026159A (ja)
AU (1) AU615987B2 (ja)
DE (2) DE3806935A1 (ja)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5297878A (en) * 1990-05-15 1994-03-29 Fuji Photo Film Co., Ltd. Method of thermal wax transfer printing
US5359424A (en) * 1991-06-05 1994-10-25 Seiko Epson Corporation Thermal transfer image forming apparatus using different gamma functions for different density ranges
US5258776A (en) * 1991-08-23 1993-11-02 Eastman Kodak Company High resolution thermal printers including a print head with heat producing elements disposed at an acute angle
US5512930A (en) * 1991-09-18 1996-04-30 Tektronix, Inc. Systems and methods of printing by applying an image enhancing precoat
US5546114A (en) * 1991-09-18 1996-08-13 Tektronix, Inc. Systems and methods for making printed products
US5434596A (en) * 1992-10-02 1995-07-18 Eastman Kodak Company Quarter-tone thermal backprinting
JP3039608B2 (ja) * 1995-03-14 2000-05-08 三菱電機株式会社 中間調記録方法及び装置
US5902053A (en) * 1995-10-11 1999-05-11 Sony Corporation Video printer having thermal head
GB9621475D0 (en) * 1996-10-15 1996-12-04 Itw Ltd A method of operating a thermal printer
US6607318B2 (en) 1998-01-12 2003-08-19 Easyprint A/S Thermal printer
US6579020B2 (en) 1998-01-12 2003-06-17 Easyprint A/S Thermal printer
US6354753B1 (en) * 1998-01-12 2002-03-12 Easyprint Aps Method of thermal printing and a thermal printer
AU756087B2 (en) 1998-01-12 2003-01-02 Easyprint A/S A method of thermal printing and a thermal printer
JP4366489B2 (ja) * 1998-09-09 2009-11-18 フジコピアン株式会社 多階調記録方法
US6176569B1 (en) 1999-08-05 2001-01-23 Lexmark International, Inc. Transitional ink jet heater addressing
ATE376495T1 (de) 2000-09-11 2007-11-15 Zipher Ltd Bandlaufwerk und druckvorrichtung
JP4828739B2 (ja) * 2001-08-17 2011-11-30 株式会社東芝 熱転写記録方法、プリンタシステムおよび熱転写記録装置
US20070172130A1 (en) * 2006-01-25 2007-07-26 Konstantin Zuev Structural description of a document, a method of describing the structure of graphical objects and methods of object recognition.
GB2448304B (en) * 2007-03-07 2009-03-11 Zipher Ltd Tape drive
GB2448303B (en) * 2007-03-07 2009-03-11 Zipher Ltd Tape drive
GB2448305B (en) * 2007-03-07 2009-03-11 Zipher Ltd Tape drive
GB2448302B (en) 2007-03-07 2009-04-08 Zipher Ltd Tape drive
GB2448301B (en) * 2007-03-07 2009-03-11 Zipher Ltd Tape drive
WO2008119927A1 (en) * 2007-03-31 2008-10-09 Zipher Limited Tape drive

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809021B1 (en) * 1978-07-07 1994-09-27 Pitney Bowes Inc Apparatus and method for generating images by producing light spots of different sizes
US4268179A (en) * 1979-10-29 1981-05-19 E. I. Du Pont De Nemours And Company Method and system for reproducing identification characters
US4413269A (en) * 1981-11-23 1983-11-01 International Business Machines Corporation Method of and apparatus for controlling gray scale while printing on charge sensitive recording mediums
AU567487B2 (en) * 1982-01-25 1987-11-26 Sony Corporation Thermal printer
US4532523A (en) * 1982-03-16 1985-07-30 Victor Company Of Japan, Ltd. Tone control for thermal ink-transfer printing apparatus
JPS58158277A (ja) * 1982-03-16 1983-09-20 Victor Co Of Japan Ltd 熱転写型印刷装置
JPS6079974A (ja) * 1983-10-07 1985-05-07 Fuji Xerox Co Ltd サ−マルヘツド
US4596993A (en) * 1984-11-29 1986-06-24 Polaroid Corporation Thermal recording system and method
US4547784A (en) * 1984-12-24 1985-10-15 Polaroid Corporation Thermal recording system and method
JPS61186068A (ja) * 1985-02-14 1986-08-19 Eimaa Denshi Kk サ−マルプリンタ及びその印刷濃度制御方法
JPS62256574A (ja) * 1986-04-30 1987-11-09 Fuji Xerox Co Ltd 印写装置
JPS62260476A (ja) * 1986-05-06 1987-11-12 Alps Electric Co Ltd 階調プリンタ
JPS62299362A (ja) * 1986-06-19 1987-12-26 Sato:Kk サ−マルプリンタ
DE3628191A1 (de) * 1986-08-20 1988-02-25 Siemens Ag Verfahren und vorrichtung zur informationsaufzeichnung auf einem informationstraeger mittels eines thermodruckkopfes

Also Published As

Publication number Publication date
DE3806935A1 (de) 1989-09-14
DE58904587D1 (de) 1993-07-15
AU615987B2 (en) 1991-10-17
AU3011089A (en) 1989-09-07
US4952085A (en) 1990-08-28
EP0331138A3 (en) 1990-08-29
EP0331138A2 (de) 1989-09-06
JPH026159A (ja) 1990-01-10

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