JPS5713856A - Polychromatic ink jet recorder - Google Patents

Polychromatic ink jet recorder

Info

Publication number
JPS5713856A
JPS5713856A JP8646680A JP8646680A JPS5713856A JP S5713856 A JPS5713856 A JP S5713856A JP 8646680 A JP8646680 A JP 8646680A JP 8646680 A JP8646680 A JP 8646680A JP S5713856 A JPS5713856 A JP S5713856A
Authority
JP
Japan
Prior art keywords
color
circuit
converters
original
signals
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
JP8646680A
Other languages
Japanese (ja)
Other versions
JPH0454422B2 (en
Inventor
Seiji Saito
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 JP8646680A priority Critical patent/JPS5713856A/en
Publication of JPS5713856A publication Critical patent/JPS5713856A/en
Publication of JPH0454422B2 publication Critical patent/JPH0454422B2/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
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
    • 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
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6016—Conversion to subtractive colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Ink Jet (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To reproduce a recorded picture having fidelity to an original by correcting a change of the properties of ink due to fluctuations of temperature and humidity, etc., by correcting a color signal obtained by a color reader on the basis of detection outputs of an ambient temperature and an ambient humidity detector. CONSTITUTION:The output of an ambient temperature detector 119 and that of an ambient humidity detector 121 are supplied to the arithmetic circuit 123 of a chromatic signal correction control circuit 17. Color signal components from photosensors 110-112 of a color original reader are inputted to A/D converters 116-118 of the circuit 17. Control signals A1-A3 which correspond to the temperature and humidity signals are supplied from the circuit 123 to converters 116-118 through MOSFETs 124-126 as reference voltages VR, VG and VB. Those converters 116-118 process respective color component signals, and the resulting digital signals are applied to a chromatic signal operator 130, which outputs a signal driving each ink jet nozzle to reproduce a recorded picture with fidelity to the original.
JP8646680A 1980-06-27 1980-06-27 Polychromatic ink jet recorder Granted JPS5713856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8646680A JPS5713856A (en) 1980-06-27 1980-06-27 Polychromatic ink jet recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8646680A JPS5713856A (en) 1980-06-27 1980-06-27 Polychromatic ink jet recorder

Publications (2)

Publication Number Publication Date
JPS5713856A true JPS5713856A (en) 1982-01-23
JPH0454422B2 JPH0454422B2 (en) 1992-08-31

Family

ID=13887727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8646680A Granted JPS5713856A (en) 1980-06-27 1980-06-27 Polychromatic ink jet recorder

Country Status (1)

Country Link
JP (1) JPS5713856A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584601A (en) * 1982-09-20 1986-04-22 Sony Corporation Circuit providing gamma, color and temperature compensation for thermal printer
US4829323A (en) * 1986-08-25 1989-05-09 Canon Kabushiki Kaisha Color image recording apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914772A (en) * 1972-10-27 1975-10-21 Casio Computer Co Ltd Ink jet type printing device
JPS5483321U (en) * 1977-11-15 1979-06-13

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914772A (en) * 1972-10-27 1975-10-21 Casio Computer Co Ltd Ink jet type printing device
JPS5483321U (en) * 1977-11-15 1979-06-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584601A (en) * 1982-09-20 1986-04-22 Sony Corporation Circuit providing gamma, color and temperature compensation for thermal printer
US4829323A (en) * 1986-08-25 1989-05-09 Canon Kabushiki Kaisha Color image recording apparatus

Also Published As

Publication number Publication date
JPH0454422B2 (en) 1992-08-31

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