JPS56146361A - Color ink jet copying device - Google Patents

Color ink jet copying device

Info

Publication number
JPS56146361A
JPS56146361A JP5081180A JP5081180A JPS56146361A JP S56146361 A JPS56146361 A JP S56146361A JP 5081180 A JP5081180 A JP 5081180A JP 5081180 A JP5081180 A JP 5081180A JP S56146361 A JPS56146361 A JP S56146361A
Authority
JP
Japan
Prior art keywords
color
picture
vij
ink
area
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
JP5081180A
Other languages
Japanese (ja)
Other versions
JPS637502B2 (en
Inventor
Akio Akao
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP5081180A priority Critical patent/JPS56146361A/en
Publication of JPS56146361A publication Critical patent/JPS56146361A/en
Publication of JPS637502B2 publication Critical patent/JPS637502B2/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
    • H04N1/46—Colour picture communication systems
    • H04N1/52—Circuits or arrangements for halftone screening

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Image Communication Systems (AREA)
  • Ink Jet (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To obtain a clear color copy picture with no spot nor darkened area, by comparing the input picture signal of color with the threshold matrix corresponding to each color and then scattering each color ink dorp sticking per unit area. CONSTITUTION:The transmitted color picture signals Y-Vij, M-Vij, C-Vij and B-Vij are led to the comparator 1 to be compared with the threshold value Tij at the area (row i, column j) corresponding to the above-mentioned picture signals of the threshold matrix 2. This comparison output Rij is stored continuously in the picture element memory 3 until the action of comparator 1 is given in the jetting direction of the ink head 5 by a row or a column. The picture elements ''1'' and ''0'' read out of the memory 3 control the color ink drops 6 jetted from the head 5 via the head driving circuit 4. As a result, an ink drop 6 is scattered regularly to every picture element by the threshold matrix due to the dither method. In such way, a clear color picture is obtained with no spot not darkened area.
JP5081180A 1980-04-16 1980-04-16 Color ink jet copying device Granted JPS56146361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5081180A JPS56146361A (en) 1980-04-16 1980-04-16 Color ink jet copying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5081180A JPS56146361A (en) 1980-04-16 1980-04-16 Color ink jet copying device

Publications (2)

Publication Number Publication Date
JPS56146361A true JPS56146361A (en) 1981-11-13
JPS637502B2 JPS637502B2 (en) 1988-02-17

Family

ID=12869141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5081180A Granted JPS56146361A (en) 1980-04-16 1980-04-16 Color ink jet copying device

Country Status (1)

Country Link
JP (1) JPS56146361A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129750A (en) * 1981-02-06 1982-08-11 Fuji Photo Film Co Ltd Method and device for bringing out medium tone in ink-jet printer
JPS5856572A (en) * 1981-09-30 1983-04-04 Nippon Telegr & Teleph Corp <Ntt> Color reproducing method
JPS58124668A (en) * 1982-01-20 1983-07-25 Sanyo Electric Co Ltd Ink jet printer
JPS58124667A (en) * 1982-01-20 1983-07-25 Sanyo Electric Co Ltd Ink jet printer
JPS58142854A (en) * 1982-02-17 1983-08-25 Canon Inc Reproducing system of color
JPS5952969A (en) * 1982-09-20 1984-03-27 Nippon Telegr & Teleph Corp <Ntt> System for processing half tone record in color recording
JPS5993354A (en) * 1982-11-20 1984-05-29 Ricoh Co Ltd Plotting method of color picture
JPS59214382A (en) * 1983-05-19 1984-12-04 Canon Inc Color picture processor
US4595948A (en) * 1982-10-13 1986-06-17 Ricoh Company, Ltd. Multicolor ink jet recording apparatus having means for preventing blurring of ink
JPS61161072A (en) * 1985-01-08 1986-07-21 Fuji Xerox Co Ltd Color image data storing system
EP0200611A2 (en) * 1985-04-09 1986-11-05 Oce Graphics Usa Inc Color image processor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421094A (en) * 1977-07-19 1979-02-16 Yoshida Seisakusho Kk Turbine hand piece with illumination

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421094A (en) * 1977-07-19 1979-02-16 Yoshida Seisakusho Kk Turbine hand piece with illumination

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129750A (en) * 1981-02-06 1982-08-11 Fuji Photo Film Co Ltd Method and device for bringing out medium tone in ink-jet printer
JPH0369711B2 (en) * 1981-02-06 1991-11-05 Fuji Photo Film Co Ltd
JPS6156666B2 (en) * 1981-09-30 1986-12-03 Nippon Telegraph & Telephone
JPS5856572A (en) * 1981-09-30 1983-04-04 Nippon Telegr & Teleph Corp <Ntt> Color reproducing method
JPS58124668A (en) * 1982-01-20 1983-07-25 Sanyo Electric Co Ltd Ink jet printer
JPS58124667A (en) * 1982-01-20 1983-07-25 Sanyo Electric Co Ltd Ink jet printer
JPH0330504B2 (en) * 1982-01-20 1991-04-30
JPS58142854A (en) * 1982-02-17 1983-08-25 Canon Inc Reproducing system of color
JPH0464871B2 (en) * 1982-02-17 1992-10-16 Canon Kk
JPS5952969A (en) * 1982-09-20 1984-03-27 Nippon Telegr & Teleph Corp <Ntt> System for processing half tone record in color recording
US4595948A (en) * 1982-10-13 1986-06-17 Ricoh Company, Ltd. Multicolor ink jet recording apparatus having means for preventing blurring of ink
JPS5993354A (en) * 1982-11-20 1984-05-29 Ricoh Co Ltd Plotting method of color picture
JPS59214382A (en) * 1983-05-19 1984-12-04 Canon Inc Color picture processor
JPH0515107B2 (en) * 1983-05-19 1993-02-26 Canon Kk
JPS61161072A (en) * 1985-01-08 1986-07-21 Fuji Xerox Co Ltd Color image data storing system
EP0200611A2 (en) * 1985-04-09 1986-11-05 Oce Graphics Usa Inc Color image processor

Also Published As

Publication number Publication date
JPS637502B2 (en) 1988-02-17

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