DE69425124D1 - Verfahren zur Gradationssteuerung und zur Bildqualitätsverbesserung in einem Thermodrucker - Google Patents

Verfahren zur Gradationssteuerung und zur Bildqualitätsverbesserung in einem Thermodrucker

Info

Publication number
DE69425124D1
DE69425124D1 DE69425124T DE69425124T DE69425124D1 DE 69425124 D1 DE69425124 D1 DE 69425124D1 DE 69425124 T DE69425124 T DE 69425124T DE 69425124 T DE69425124 T DE 69425124T DE 69425124 D1 DE69425124 D1 DE 69425124D1
Authority
DE
Germany
Prior art keywords
image quality
thermal printer
quality improvement
gradation control
gradation
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
DE69425124T
Other languages
English (en)
Other versions
DE69425124T2 (de
Inventor
Yoshiyuki Nakai
Yasushi Adachi
Tatsuya Tanaka
Toshio Takehara
Tsuyoshi Takeno
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.)
Sharp Corp
Original Assignee
Sharp Corp
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
Priority claimed from JP33289093A external-priority patent/JP3230918B2/ja
Priority claimed from JP15478094A external-priority patent/JP3200519B2/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69425124D1 publication Critical patent/DE69425124D1/de
Publication of DE69425124T2 publication Critical patent/DE69425124T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N1/46—Colour picture communication systems
    • H04N1/52—Circuits or arrangements for halftone screening
    • 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
    • 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
DE69425124T 1993-12-27 1994-12-23 Verfahren zur Gradationssteuerung und zur Bildqualitätsverbesserung in einem Thermodrucker Expired - Fee Related DE69425124T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP33289093A JP3230918B2 (ja) 1993-12-27 1993-12-27 カラー熱転写プリンタにおける階調制御方法
JP15478094A JP3200519B2 (ja) 1994-07-06 1994-07-06 サーマルプリンタにおける画質改善方法

Publications (2)

Publication Number Publication Date
DE69425124D1 true DE69425124D1 (de) 2000-08-10
DE69425124T2 DE69425124T2 (de) 2001-03-22

Family

ID=26482974

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69425124T Expired - Fee Related DE69425124T2 (de) 1993-12-27 1994-12-23 Verfahren zur Gradationssteuerung und zur Bildqualitätsverbesserung in einem Thermodrucker
DE69433608T Expired - Fee Related DE69433608T2 (de) 1993-12-27 1994-12-23 Verfahren zur Gradationssteuerung und Verbesserung der Bildqualität bei einem Thermodrucker

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69433608T Expired - Fee Related DE69433608T2 (de) 1993-12-27 1994-12-23 Verfahren zur Gradationssteuerung und Verbesserung der Bildqualität bei einem Thermodrucker

Country Status (3)

Country Link
US (1) US5721578A (de)
EP (2) EP0660586B1 (de)
DE (2) DE69425124T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3744149B2 (ja) * 1997-09-30 2006-02-08 ブラザー工業株式会社 感熱記録装置
US6226021B1 (en) 1998-04-03 2001-05-01 Alps Electric Co., Ltd. Image forming method of thermal transfer printer
JP3969899B2 (ja) * 1999-07-15 2007-09-05 富士フイルム株式会社 画像表示方法およびこれに用いる画像表示装置
US6999202B2 (en) 2001-03-27 2006-02-14 Polaroid Corporation Method for generating a halftone of a source image
US6937365B2 (en) 2001-05-30 2005-08-30 Polaroid Corporation Rendering images utilizing adaptive error diffusion
US6842186B2 (en) * 2001-05-30 2005-01-11 Polaroid Corporation High speed photo-printing apparatus
DE60206039T2 (de) * 2001-05-30 2006-06-22 Polaroid Corp., Waltham Hochgeschwindigkeits-photodruckgerät
US6906736B2 (en) * 2002-02-19 2005-06-14 Polaroid Corporation Technique for printing a color image
US7283666B2 (en) 2003-02-27 2007-10-16 Saquib Suhail S Digital image exposure correction
US8773685B2 (en) 2003-07-01 2014-07-08 Intellectual Ventures I Llc High-speed digital image printing system
JP2010012635A (ja) * 2008-07-01 2010-01-21 Canon Inc 記録装置
JP5988641B2 (ja) * 2012-03-23 2016-09-07 キヤノン株式会社 プリンタ装置、印刷方法、プログラム。
US10073994B2 (en) 2014-10-13 2018-09-11 Avery Dennison Retail Information Services, Llc Successive memory writes in an RFID interrogator
CN107621929B (zh) * 2017-09-12 2023-07-14 珠海智汇网络设备有限公司 一种灰度热敏打印方法、热敏打印机和可读存储介质

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL299203A (de) * 1962-07-02
DE2262824C3 (de) * 1972-12-22 1975-07-10 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zur gerasterten Reproduktion farbiger Halbtonbilder im Ein- oder Mehrfarbendruck
JPS58126175A (ja) * 1982-01-25 1983-07-27 Sony Corp 感熱式プリンタ
JPS60180860A (ja) * 1984-02-29 1985-09-14 Victor Co Of Japan Ltd 階調を有する熱転写記録方法
DE3688715T3 (de) * 1985-03-30 1999-05-06 Hitachi Ltd Druckverfahren vom Abtastaufzeichnungstyp und dessen Verwirklichungsvorrichtung.
US4691211A (en) * 1986-03-24 1987-09-01 Eastman Kodak Company Thermal printer
US4974067A (en) * 1986-06-06 1990-11-27 Ricoh Company, Ltd. Multi-step-digital color image reproducing method and apparatus
JPH0659739B2 (ja) * 1986-11-11 1994-08-10 日本ビクター株式会社 熱転写型印刷装置
JPH02139258A (ja) * 1988-08-18 1990-05-29 Ricoh Co Ltd 記録濃度補正装置
US5287209A (en) * 1990-10-09 1994-02-15 Matsushita Electric Industrial Co., Ltd. Image forming device for enhancing tone reproduction by changing dot size
US5333243A (en) * 1992-05-04 1994-07-26 Hewlett-Packard Company Method for forming color images, using a hue-plus-gray color model and error diffusion
KR940003639B1 (ko) * 1992-05-07 1994-04-25 주식회사 금성사 열전사 감열기록기기의 면적계조 제어장치와 방법

Also Published As

Publication number Publication date
DE69425124T2 (de) 2001-03-22
EP0660586A3 (de) 1996-06-12
US5721578A (en) 1998-02-24
EP0660586A2 (de) 1995-06-28
EP0987879B1 (de) 2004-03-10
DE69433608T2 (de) 2005-02-17
EP0660586B1 (de) 2000-07-05
DE69433608D1 (de) 2004-04-15
EP0987879A1 (de) 2000-03-22

Similar Documents

Publication Publication Date Title
DE69424507T2 (de) Verfahren und System zur Prädiktion eines Farbreproduktionsbildes
EP0735511A3 (de) Verfahren und Vorrichtung zum Ändern einer bestimmten Farbe in einem Farbbilde
DE69531653D1 (de) Verfahren und Vorrichtung zur Justierung einer Linsenauflage mit einem Linsendruckbild
DE69835408D1 (de) Verfahren und Vorrichtung zur Komposition von Bildfarben unter Speicherbeschränkungen
DE69510474D1 (de) Verfahren und Vorrichtung zur sequentiellen Farbbildformung
DE69425124D1 (de) Verfahren zur Gradationssteuerung und zur Bildqualitätsverbesserung in einem Thermodrucker
EP0525520A3 (en) Screening system and method for color reproduction in offset printing
DE69327274T2 (de) Verfahren zur Reduzierung der Pixeldichte in einem Drucker
EP0423653A3 (en) Method and apparatus for compensating for color in color images
EP0686890A3 (de) Farbbilderzeugungsgerät und Verfahren zur Farbbilderzeugung
DE69421871T2 (de) Elektrophotographisches Farbgerät und Verfahren zur Durchführung in einem solchen Gerät
DE69431968D1 (de) Verfahren zur Korrektur von Halbtonpunktbilddaten und dieses anwendendes Bildverarbeitungsgerät
DE69402458T2 (de) Verfahren zum Ermitteln und Einregeln der Druckqualität in Thermofarbstrahldrucker
DE69731344D1 (de) Verfahren und Vorrichtung zur Bildqualitätsvorhersage und -kontrolle
IL103763A0 (en) Apparatus and method for enhancing color images
DE69215867D1 (de) Wärmeempfindliches Aufzeichnungsmaterial und Verfahren zur Herstellung von Farbbildern
DE69531508D1 (de) Verfahren zum tintenstrahldrucken und tintenstrahldruckkopf zur durchführung desverfahrens
DE69319857T2 (de) Verfahren und Gerät zur Verbesserung von Vollfarbbildern mit Verwendung von Verfahrensschwärze und Druckerschwärze
EP0488793A3 (en) Method and apparatus for color printing
DE69414796T2 (de) Verbessertes optisches System zur Verwendung in einem Drucker und Verfahren
DE69520164T2 (de) Bildverarbeitungsvorrichtung und -verfahren und Verfahren zur Herstellung von tintenstrahlbedruckten Erzeugnissen
DE69326295D1 (de) Verfahren zur Reduziering der Pixeldichte in einem Drucker
GB2267354B (en) Image printing method and apparatus
DE69630724D1 (de) Verfahren und Vorrichtung zum Drucken unter Verwendung von Punktverschiebung
DE69424488T2 (de) Verfahren und Vorrichtung zum Steuern der Bewegung des Druckkopfes bei einem Drucker

Legal Events

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