WO1992010057A3 - Printing apparatus and method - Google Patents

Printing apparatus and method Download PDF

Info

Publication number
WO1992010057A3
WO1992010057A3 PCT/US1991/006892 US9106892W WO9210057A3 WO 1992010057 A3 WO1992010057 A3 WO 1992010057A3 US 9106892 W US9106892 W US 9106892W WO 9210057 A3 WO9210057 A3 WO 9210057A3
Authority
WO
WIPO (PCT)
Prior art keywords
area modulation
hardcopy
image
printing apparatus
pixel
Prior art date
Application number
PCT/US1991/006892
Other languages
French (fr)
Other versions
WO1992010057A2 (en
Inventor
Janet A Allen
Daniel P Bybell
Dana F Schuh
Jay E Thornton
Original Assignee
Polaroid 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
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of WO1992010057A2 publication Critical patent/WO1992010057A2/en
Publication of WO1992010057A3 publication Critical patent/WO1992010057A3/en

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

Abstract

Printing apparatus and method particularly suited to provide a hardcopy of an image which is produced by medical imaging equipment or the like. The apparatus produces hardcopy consisting of pixels whose size can be changed by area modulation to suit image tonal content and detail while still maintaining a large number of gray levels per area modulation cell (pixel). Preferably, the same area modulation patterns representing pixel tonal values are used for printing pixels of different sizes.
PCT/US1991/006892 1990-11-21 1991-09-23 Printing apparatus and method WO1992010057A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/616,786 US5221971A (en) 1990-11-21 1990-11-21 Area modulation printing apparatus
US616,786 1990-11-21

Publications (2)

Publication Number Publication Date
WO1992010057A2 WO1992010057A2 (en) 1992-06-11
WO1992010057A3 true WO1992010057A3 (en) 1992-07-09

Family

ID=24470935

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/006892 WO1992010057A2 (en) 1990-11-21 1991-09-23 Printing apparatus and method

Country Status (5)

Country Link
US (1) US5221971A (en)
EP (1) EP0513257A1 (en)
JP (1) JPH05503199A (en)
CA (1) CA2052929A1 (en)
WO (1) WO1992010057A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5337408A (en) * 1991-08-09 1994-08-09 Vadem Corporation Multi-level display controller
US5374997A (en) * 1992-07-31 1994-12-20 Xerox Corporation High addressability error diffusion with minimum mark size
US5501940A (en) * 1993-05-20 1996-03-26 Polaroid Corporation Process for protecting a binary image with a siloxane durable layer that is not removable by hexane, isopropanol or water
US5547534A (en) * 1993-09-09 1996-08-20 Polaroid Corporation Protected image, and process for the production thereof
DE69422596T2 (en) * 1993-11-12 2000-10-19 Tektronix Inc Geometry of halftone halftone patterns for printing high quality images
US5537223A (en) * 1994-06-02 1996-07-16 Xerox Corporation Rotating non-rotationally symmetrical halftone dots for encoding embedded data in a hyperacuity printer
JPH08156329A (en) * 1994-12-12 1996-06-18 Fuji Xerox Co Ltd Image forming device
JPH08163363A (en) * 1994-12-12 1996-06-21 Fuji Xerox Co Ltd Image forming device
US5719965A (en) * 1994-12-13 1998-02-17 Hewlett-Packard Company Higher precision look-up table from lower precision look-up table for improved tonal adjustment
US5933278A (en) * 1997-06-30 1999-08-03 Polaroid Corporation Monolithic multi-faceted mirror for combining multiple beams from different light sources by reflection
US6181357B1 (en) 1998-02-17 2001-01-30 International Business Machines Corporation Method and system for the modification of the timing of a plurality of PEL clocks in an electrophotographic device
US6404909B2 (en) * 1998-07-16 2002-06-11 General Electric Company Method and apparatus for processing partial lines of scanned images
JP2000332993A (en) * 1999-05-17 2000-11-30 Fuji Photo Film Co Ltd Image recorder
WO2002025589A1 (en) * 2000-09-20 2002-03-28 Nik Multimedia, Inc. Digital image sharpening system
RU2335094C2 (en) * 2005-10-31 2008-09-27 Общество с ограниченной ответственностью "Новейшие допечатные технологии" (ООО "Новейшие допечатные технологии") Method of adaptive original halftone screening
DE102006049404A1 (en) * 2006-10-19 2008-04-30 Carl Zeiss Ag HMD device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040094A (en) * 1973-02-13 1977-08-02 International Publishing Corporation Ltd. Electronic screening
US4084259A (en) * 1973-11-30 1978-04-11 The Mead Corporation Apparatus for dot matrix recording
GB2026283A (en) * 1978-06-23 1980-01-30 Hell R Ing Gmbh Production of half tone facsimile separations with optional screen angles
GB2098022A (en) * 1981-04-14 1982-11-10 Dainippon Screen Mfg A method for producing a halftone plate for use in a picture reproducing machine
US4533941A (en) * 1983-01-14 1985-08-06 Coulter Systems Corporation Method and apparatus for half-tone reproduction of a varying tone original image

Family Cites Families (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646262A (en) * 1968-03-25 1972-02-29 Printing Dev Inc Electronic reproduction of continuous image with controlled modification of image reproduction
US3604846A (en) * 1969-03-03 1971-09-14 Mead Corp Method and system for reconstruction of half-tone images
US3806641A (en) * 1971-05-17 1974-04-23 Information Int Inc Method and apparatus for forming halftone images
DE2262824C3 (en) * 1972-12-22 1975-07-10 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Process for the rasterized reproduction of colored halftone images in single or multi-color printing
JPS51150401A (en) * 1975-06-18 1976-12-24 Dainippon Screen Mfg Method and device for scanning recording screen printed image
US4281312A (en) * 1975-11-04 1981-07-28 Massachusetts Institute Of Technology System to effect digital encoding of an image
JPS52106737A (en) * 1976-03-04 1977-09-07 Canon Inc Picture recorder
US4196451A (en) * 1976-05-21 1980-04-01 Xerox Corporation Electronic halftone generator
US4149183A (en) * 1976-05-21 1979-04-10 Xerox Corporation Electronic halftone generator
US4389712A (en) * 1978-03-09 1983-06-21 Itek Corporation High information density laser image recording method and apparatus
US4386272C1 (en) * 1978-07-07 2001-02-06 Pitney Bowes Inc Apparatus and method for generating images by producing light spots of different sizes
US4468706A (en) * 1979-02-13 1984-08-28 Coulter Systems Corporation Imaging by varying the placement of elements in the pixels
JPS5776559A (en) * 1980-10-30 1982-05-13 Canon Inc Processing method of intermediate tone image
US4491875A (en) * 1980-10-30 1985-01-01 Canon Kabushiki Kaisha Apparatus and method for tonal image processing
JPS57116314A (en) * 1981-01-12 1982-07-20 Canon Inc Image recorder on multilaser beam scanning system
US4661859A (en) * 1981-06-03 1987-04-28 Xerox Corporation Pulse width modulation greyscale system for halftone printer
US4499489A (en) * 1981-06-08 1985-02-12 Dr. Ing. Rudolf Hell Gmbh Production of screen printing blocks
GB2101836B (en) * 1981-07-18 1985-02-20 Linotype Paul Ltd Method for encoding image data
JPS5817442A (en) * 1981-07-24 1983-02-01 Dainippon Screen Mfg Co Ltd Continuous gradation exposure method and its device in image scanning and recording device
US4689694A (en) * 1983-01-12 1987-08-25 Canon Kabushiki Kaisha Image recording apparatus utilizing linearly arranged recording elements
JPS6024769A (en) * 1983-07-20 1985-02-07 Ricoh Co Ltd Recording system of half tone picture
DE3444366C3 (en) * 1983-12-09 1994-12-22 Canon Kk Image processing device
JPS60152173A (en) * 1984-01-20 1985-08-10 Fuji Xerox Co Ltd Device for reading original picture information
GB8401933D0 (en) * 1984-01-25 1984-02-29 Crosfield Electronics Ltd Half-tone imaging
US4625222A (en) * 1984-05-17 1986-11-25 International Business Machines Corporation Interacting print enhancement techniques
US4651287A (en) * 1984-06-14 1987-03-17 Tsao Sherman H Digital image processing algorithm for output devices with discrete halftone gray scale capability
JPS61199374A (en) * 1985-02-28 1986-09-03 Ricoh Co Ltd Laser printer provided with dot correction
DE3609252A1 (en) * 1985-03-20 1986-10-02 Canon K.K., Tokio/Tokyo METHOD AND DEVICE FOR IMAGE REPRODUCTION
JPS61285867A (en) * 1985-06-12 1986-12-16 Dainippon Screen Mfg Co Ltd Recording method and device for dot picture
JPS6227716A (en) * 1985-07-29 1987-02-05 Fuji Photo Film Co Ltd Light valve for meshed-dot formation
US4897734A (en) * 1985-10-28 1990-01-30 Canon Kabushiki Kaisha Image processing apparatus
JPS62145966A (en) * 1985-12-20 1987-06-30 Fuji Xerox Co Ltd Method and apparatus for forming picture
JPH0782156B2 (en) * 1986-05-23 1995-09-06 株式会社日立製作所 Recording optics
US4965672A (en) * 1987-05-11 1990-10-23 The Mead Corporation Method and apparatus for halftone imaging
JPH01216841A (en) * 1988-02-25 1989-08-30 Fuji Xerox Co Ltd Gradation display of image output apparatus
JPH01258953A (en) * 1988-04-08 1989-10-16 Ricoh Co Ltd Laser writing device
JPH01264076A (en) * 1988-04-14 1989-10-20 Dainippon Screen Mfg Co Ltd Split exposure dot picture recorder
JPH085211B2 (en) * 1988-06-24 1996-01-24 シャープ株式会社 Laser light irradiation device
US4916530A (en) * 1988-09-02 1990-04-10 Itek Graphix Corp. High resolution halftone dot generator system including LED array
US4918622A (en) * 1988-11-16 1990-04-17 Eastman Kodak Company Electronic graphic arts screener
US4914455A (en) * 1989-07-31 1990-04-03 Xerox Corporation Process control for electrostatographic printers
US4985779A (en) * 1989-09-19 1991-01-15 Intergraph Corporation Improved method and apparatus for generating halftone images

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040094A (en) * 1973-02-13 1977-08-02 International Publishing Corporation Ltd. Electronic screening
US4084259A (en) * 1973-11-30 1978-04-11 The Mead Corporation Apparatus for dot matrix recording
GB2026283A (en) * 1978-06-23 1980-01-30 Hell R Ing Gmbh Production of half tone facsimile separations with optional screen angles
GB2098022A (en) * 1981-04-14 1982-11-10 Dainippon Screen Mfg A method for producing a halftone plate for use in a picture reproducing machine
US4533941A (en) * 1983-01-14 1985-08-06 Coulter Systems Corporation Method and apparatus for half-tone reproduction of a varying tone original image

Also Published As

Publication number Publication date
JPH05503199A (en) 1993-05-27
CA2052929A1 (en) 1992-05-22
EP0513257A1 (en) 1992-11-19
US5221971A (en) 1993-06-22
WO1992010057A2 (en) 1992-06-11

Similar Documents

Publication Publication Date Title
WO1992010057A3 (en) Printing apparatus and method
EP0621723A3 (en) Method of correcting halftone dot image data and image processing apparatus with halftone dot image data correction.
EP0827332A3 (en) Apparatus and method for modifying enlarged ratio or reduced ratio of image
EP0449407A3 (en) Apparatus and techniques for processing of data such as colour images
EP0370823A3 (en) Method and apparatus for encoding images
EP1009161A3 (en) Image-processing apparatus and image-processing method
GB2305833B (en) Image processing apparatus for correcting color space coordinates and method
AU9088491A (en) Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
CA2133558A1 (en) Method and Apparatus for Halftoning and Inverse Halftoning and the Transmission of Such Images
CA2100886A1 (en) Image Processing Method to Reduce Marking Material Coverage in Printing Processes
EP1014687A3 (en) Correcting exposure and tone scale of digital images captured by an image capture device
EP0227439A3 (en) Method of and apparatus for transmitting digital data and apparatus for decoding digital data
EP0389743A3 (en) Apparatus and accompanying method for converting a bit mapped monochromatic image to a grey scale image using table look up operations
EP0838940A3 (en) Multiple spatial channel processing
EP0810769A3 (en) Apparatus and method for selectively processing a scanned image
AU8758291A (en) Method and apparatus for capturing skin print images
EP0898416A3 (en) Image processing apparatus and method
WO1999034321A3 (en) Producing an enhanced raster image
EP1324265A3 (en) Method and system for improving an image characteristic based on image content
EP0800309A3 (en) Method of generating colour proof data and method of generating colour proof
EP0854440A3 (en) Image processing apparatus capable of synthesizing images based on transmittance data
EP0527097A3 (en) Apparatus and method for collectively performing tile-based image rotation, scaling and digital halftone screening
EP0805586A3 (en) Method and apparatus for generating halftone dots for color printing
EP0701363A3 (en) Method and apparatus for generating halftone dot screens for color imaging
EP0707414A3 (en) Improved method and apparatus for reducing artifacts in halftone images using gray balance correction

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1991918968

Country of ref document: EP

AK Designated states

Kind code of ref document: A3

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

CFP Corrected version of a pamphlet front page

Free format text: DRAWING REPLACED BY CORRECT DRAWING

WWP Wipo information: published in national office

Ref document number: 1991918968

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1991918968

Country of ref document: EP