JPS57174279A - Driving of thermal head - Google Patents

Driving of thermal head

Info

Publication number
JPS57174279A
JPS57174279A JP56060218A JP6021881A JPS57174279A JP S57174279 A JPS57174279 A JP S57174279A JP 56060218 A JP56060218 A JP 56060218A JP 6021881 A JP6021881 A JP 6021881A JP S57174279 A JPS57174279 A JP S57174279A
Authority
JP
Japan
Prior art keywords
head
driving time
gradation
theta1
printing
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
JP56060218A
Other languages
Japanese (ja)
Other versions
JPH0117469B2 (en
Inventor
Takumi Hasebe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56060218A priority Critical patent/JPS57174279A/en
Publication of JPS57174279A publication Critical patent/JPS57174279A/en
Publication of JPH0117469B2 publication Critical patent/JPH0117469B2/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
    • H04N1/40025—Circuits exciting or modulating particular heads for reproducing continuous tone value scales
    • H04N1/40031—Circuits exciting or modulating particular heads for reproducing continuous tone value scales for a plurality of reproducing elements simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To enable recording with an accurate density by controlling a thermal head adapted to make a recording at a half tone density in multi-gradation by varying the head temperature by multistages with a head driving time to which information of a picture signal one dot before is added. CONSTITUTION:When a recording is made at an half tone density by varying a head temperature by stages to theta1-thetan, a thermal head is driven with a driving time obtained as the sum of a head driving time t1(Y) predetermined as necessary for the head temperature to rise to theta1 with respect to various combinations of information an printing in each n gradation one dot before and information on printing in each n gradation about to be done and a head driving time t(m) as given by the formula (t'2, t'3...tm represent the head driving time necessary for the head temperature to rise to theta1 theta2, theta2 theta3, thetam-1 thetam) predetermined with respect to in formation on printing in each (n) gradation about to be printed
JP56060218A 1981-04-20 1981-04-20 Driving of thermal head Granted JPS57174279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56060218A JPS57174279A (en) 1981-04-20 1981-04-20 Driving of thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56060218A JPS57174279A (en) 1981-04-20 1981-04-20 Driving of thermal head

Publications (2)

Publication Number Publication Date
JPS57174279A true JPS57174279A (en) 1982-10-26
JPH0117469B2 JPH0117469B2 (en) 1989-03-30

Family

ID=13135798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56060218A Granted JPS57174279A (en) 1981-04-20 1981-04-20 Driving of thermal head

Country Status (1)

Country Link
JP (1) JPS57174279A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6042072A (en) * 1983-08-16 1985-03-06 Nec Corp Printing-controlling circuit for thermal printer
JPS60184860A (en) * 1984-03-03 1985-09-20 Fujitsu Ltd Thermal head driving system
JPS6178669A (en) * 1984-09-27 1986-04-22 Fujitsu Ltd Thermal head controlling system
JPS6233656A (en) * 1985-08-06 1987-02-13 Alps Electric Co Ltd Thermal printer
JP2009067384A (en) * 2008-10-31 2009-04-02 Yanmar Co Ltd Work vehicle cabin

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6042072A (en) * 1983-08-16 1985-03-06 Nec Corp Printing-controlling circuit for thermal printer
JPS60184860A (en) * 1984-03-03 1985-09-20 Fujitsu Ltd Thermal head driving system
JPH0368831B2 (en) * 1984-03-03 1991-10-29 Fujitsu Ltd
JPS6178669A (en) * 1984-09-27 1986-04-22 Fujitsu Ltd Thermal head controlling system
JPS6233656A (en) * 1985-08-06 1987-02-13 Alps Electric Co Ltd Thermal printer
JP2009067384A (en) * 2008-10-31 2009-04-02 Yanmar Co Ltd Work vehicle cabin

Also Published As

Publication number Publication date
JPH0117469B2 (en) 1989-03-30

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