JPH0359622B2 - - Google Patents

Info

Publication number
JPH0359622B2
JPH0359622B2 JP56209563A JP20956381A JPH0359622B2 JP H0359622 B2 JPH0359622 B2 JP H0359622B2 JP 56209563 A JP56209563 A JP 56209563A JP 20956381 A JP20956381 A JP 20956381A JP H0359622 B2 JPH0359622 B2 JP H0359622B2
Authority
JP
Japan
Prior art keywords
image
signal
image signal
input
matrix
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
JP56209563A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58114570A (ja
Inventor
Naoto Kawamura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56209563A priority Critical patent/JPS58114570A/ja
Priority to US06/451,264 priority patent/US4553173A/en
Publication of JPS58114570A publication Critical patent/JPS58114570A/ja
Publication of JPH0359622B2 publication Critical patent/JPH0359622B2/ja
Granted 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
    • H04N1/405—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
JP56209563A 1981-12-26 1981-12-26 画像処理装置 Granted JPS58114570A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56209563A JPS58114570A (ja) 1981-12-26 1981-12-26 画像処理装置
US06/451,264 US4553173A (en) 1981-12-26 1982-12-20 Image processing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56209563A JPS58114570A (ja) 1981-12-26 1981-12-26 画像処理装置

Publications (2)

Publication Number Publication Date
JPS58114570A JPS58114570A (ja) 1983-07-07
JPH0359622B2 true JPH0359622B2 (en:Method) 1991-09-11

Family

ID=16574895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56209563A Granted JPS58114570A (ja) 1981-12-26 1981-12-26 画像処理装置

Country Status (2)

Country Link
US (1) US4553173A (en:Method)
JP (1) JPS58114570A (en:Method)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161981A (ja) * 1983-03-06 1984-09-12 Canon Inc 画像処理装置
DE3413699A1 (de) * 1983-04-12 1984-10-18 Canon K.K., Tokio/Tokyo Bildverarbeitungssystem
US4736254A (en) * 1984-11-22 1988-04-05 Matsushita Electric Industrial Co., Ltd. Method and apparatus for generating pseudo-halftone dots by comparing gray scale values of an original with dither threshold values stored in cells of a matrix array divided into imaginary matrices of elemental areas each containing one cell
JPS61140274A (ja) * 1984-12-12 1986-06-27 Matsushita Graphic Commun Syst Inc 中間調画信号処理方式
US4783838A (en) * 1984-12-26 1988-11-08 Konishiroku Photo Industry Co., Ltd. Image processing method and apparatus therefor
US4677571A (en) * 1985-02-08 1987-06-30 Rise Technology Inc. Electronic publishing
JPS61199374A (ja) * 1985-02-28 1986-09-03 Ricoh Co Ltd ドツト補正のレ−ザプリンタ
DE3609252A1 (de) * 1985-03-20 1986-10-02 Canon K.K., Tokio/Tokyo Verfahren und vorrichtung zur bildreproduktion
JPS61236274A (ja) * 1985-04-12 1986-10-21 Ricoh Co Ltd 画デ−タ処理方式
US5172142A (en) * 1985-04-15 1992-12-15 Canon Kabushiki Kaisha Ink jet recording apparatus with driving means providing a driving signal having upper and lower limits in response to an input signal
US5905511A (en) * 1985-04-15 1999-05-18 Canon Kabushiki Kaisha Ink jet recording apparatus for accurately recording regardless of ambient temperature
US4873537A (en) * 1985-06-08 1989-10-10 Canon Kabushiki Kaisha Image recording apparatus for producing a plurality of pulse width modulated signals on the basis of image data
US4870499A (en) * 1985-08-29 1989-09-26 Canon Kabushiki Kaisha Image processing apparatus
US5029227A (en) * 1985-08-30 1991-07-02 Canon Kabushiki Kaisha Image processing apparatus
JPS6277637A (ja) * 1985-10-01 1987-04-09 Seiko Instr & Electronics Ltd カラ−ハ−ドコピ−装置
JPH0658463B2 (ja) * 1986-08-12 1994-08-03 旭光学工業株式会社 レ−ザビ−ムプリンタの水平同期装置
JPS6358584A (ja) * 1986-08-29 1988-03-14 Canon Inc 画像処理装置
JPS63202182A (ja) * 1987-02-18 1988-08-22 Olympus Optical Co Ltd 傾斜ドツトパタ−ン形成方法
US4823189A (en) * 1987-05-08 1989-04-18 Tektronix, Inc. Method and apparatus for creating a dither pattern
JPS63286351A (ja) * 1987-05-19 1988-11-24 Sony Corp プリンタ装置
US5252986A (en) * 1987-05-20 1993-10-12 Canon Kabushiki Kaisha Image processing method for superposing plural dots on a recording medium at a predetermined interval and apparatus utilizing same
US5617123A (en) * 1987-05-20 1997-04-01 Canon Kabushiki Kaisha Image processing method utilizing multiple binarizing and recording agent depositing steps
US4903123A (en) * 1987-06-10 1990-02-20 Canon Kabushiki Kaisha Image processing apparatus using inclined line screens to reduce Moire
US4860026A (en) * 1987-06-25 1989-08-22 Canon Kabushiki Kaisha Halftone image recording method using recording data having a plurality of concentrations for one color
GB2212691B (en) * 1987-11-20 1992-04-15 Mitsubishi Electric Corp Halftone printing system
US5148287A (en) * 1988-10-20 1992-09-15 Canon Kabushiki Kaisha Image processing apparatus with good highlight reproduction
US5055944A (en) * 1988-11-15 1991-10-08 Mita Industrial Co., Ltd. Image signal processing apparatus
US5859948A (en) * 1988-12-06 1999-01-12 Canon Kabushiki Kaisha Images processing apparatus for controlling binarized multi-value image data to convert pulse widths differently in at least two modes
US5353359A (en) * 1989-02-09 1994-10-04 Ricoh Company, Ltd. Methods for generating character pattern data and making image
JPH02303863A (ja) * 1989-05-19 1990-12-17 Canon Inc 画像形成装置
EP0421712B1 (en) * 1989-10-02 1997-05-14 Canon Kabushiki Kaisha Image forming apparatus, and modulating method therein
US4933689A (en) * 1989-10-25 1990-06-12 Hewlett-Packard Company Method and apparatus for print image enhancement
US4959730A (en) * 1990-01-02 1990-09-25 Eastman Kodak Company False density contour suppression using randomly modified input signals for comparison to threshold values
JP2824999B2 (ja) * 1990-02-01 1998-11-18 キヤノン株式会社 画像処理装置
US5107349A (en) * 1990-04-16 1992-04-21 Eastman Kodak Company Multiple screen frequency half-toning with one screen angle
ATE152310T1 (de) * 1990-11-21 1997-05-15 Polaroid Corp Druckverfahren
US5170261A (en) * 1990-11-21 1992-12-08 Polaroid Corporation Printing method
US5150428A (en) * 1991-04-01 1992-09-22 Eastman Kodak Company Method for generating halftone image data with randomly selected threshold array
US5418618A (en) * 1992-03-09 1995-05-23 Mita Industrial Co., Ltd. Tone processing method for forming a halftone image
US5274472A (en) * 1992-05-21 1993-12-28 Xerox Corporation High addressability image generator using pseudo interpolation of video and screen data
US5587811A (en) * 1995-04-28 1996-12-24 Dataproducts Corporation Halftone screen using spot function to rank pixels following one or more design rules
DE69733980T2 (de) * 1996-06-07 2006-02-23 Canon K.K. Verfahren und Vorrichtung zum Ausstossen von Flüssigkeit
US20010012111A1 (en) * 1998-01-27 2001-08-09 Hewlett-Packard Company Developed toner mass control using split subpixel laser modulations
US7139101B2 (en) * 2002-10-31 2006-11-21 Xerox Corporation Anisotropic stochastic screen
US7182451B2 (en) * 2003-10-24 2007-02-27 Pitney Bowes Inc. Method and apparatus for halftone printing with multi-signal transmission ink
JP2021069993A (ja) * 2019-10-31 2021-05-06 キヤノン株式会社 ウルトラファインバブル生成装置およびその制御方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120937A (en) * 1981-01-21 1982-07-28 Dainippon Screen Mfg Co Ltd Formation of halftone plate image

Also Published As

Publication number Publication date
US4553173A (en) 1985-11-12
JPS58114570A (ja) 1983-07-07

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