JPS5748868A - Heat sensing recorder - Google Patents

Heat sensing recorder

Info

Publication number
JPS5748868A
JPS5748868A JP55124455A JP12445580A JPS5748868A JP S5748868 A JPS5748868 A JP S5748868A JP 55124455 A JP55124455 A JP 55124455A JP 12445580 A JP12445580 A JP 12445580A JP S5748868 A JPS5748868 A JP S5748868A
Authority
JP
Japan
Prior art keywords
tone
tone code
circuit
heat sensing
data selector
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.)
Pending
Application number
JP55124455A
Other languages
Japanese (ja)
Inventor
Masatoshi Kato
Etsuo Hatabe
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55124455A priority Critical patent/JPS5748868A/en
Publication of JPS5748868A publication Critical patent/JPS5748868A/en
Pending 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
    • H04N1/4056—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 the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

Landscapes

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

Abstract

PURPOSE:To perform intermediate tone recording with a simple circuit, by transferring white/black binary video signals to a plurality of drive circuits and controlling an applied energy from each heater to a heat sensing recording medium, in a facsimile device or the like. CONSTITUTION:A tone recording circuit 34 includes a reference signal generating circuit 31 and a data selector 32. This circuit 31 generates a reference signal ''0'' which is, e.g., at consecutive low potential, and reference signals ''1''-''7'' in which the respective pulse width is sequentially different and gives them to the data selector 32. To the data selector 32, a tone code signal in 3-bit is given from a tone code generator via an input terminal 11. This tone code signal corresponds to the tone level recorded with heaters 20a...20c and is generated repetitively with the period to the unit time. The selector 32 selects the corresponding reference signal based on the tone code signal in 3-bit and generates a binary signal in which it is at high potential for the period of the tone code to be given, and controls the applied energy to the heat sensing recording medium.
JP55124455A 1980-09-05 1980-09-05 Heat sensing recorder Pending JPS5748868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55124455A JPS5748868A (en) 1980-09-05 1980-09-05 Heat sensing recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55124455A JPS5748868A (en) 1980-09-05 1980-09-05 Heat sensing recorder

Publications (1)

Publication Number Publication Date
JPS5748868A true JPS5748868A (en) 1982-03-20

Family

ID=14885938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55124455A Pending JPS5748868A (en) 1980-09-05 1980-09-05 Heat sensing recorder

Country Status (1)

Country Link
JP (1) JPS5748868A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150370A (en) * 1982-03-02 1983-09-07 Sony Corp Producing system of gradation signal for printer
JPS58168382A (en) * 1982-03-30 1983-10-04 Victor Co Of Japan Ltd Printing device
JPS58196784A (en) * 1982-05-12 1983-11-16 Sony Corp Gradation converting device of video signal
JPS59226579A (en) * 1983-06-08 1984-12-19 Mitsubishi Electric Corp Printer of television receiver
JPS60198964A (en) * 1984-03-22 1985-10-08 Canon Inc Multi-gradation printer
JPS6294359A (en) * 1985-10-21 1987-04-30 Matsushita Electric Ind Co Ltd Thermal recording apparatus
JPS63108867A (en) * 1986-10-24 1988-05-13 Minolta Camera Co Ltd Method and device for multigradation thermal transfer and recording
US4806949A (en) * 1986-10-24 1989-02-21 Minolta Camera Kabushiki Kaisha Multitone thermal transfer recording method and apparatus
US5142301A (en) * 1989-12-25 1992-08-25 Oki Electric Industry Co., Ltd. Gradation control circuit for a thermal head
JPH0789116A (en) * 1993-11-22 1995-04-04 Ricoh Co Ltd Drive device for recording head

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150370A (en) * 1982-03-02 1983-09-07 Sony Corp Producing system of gradation signal for printer
JPH0369228B2 (en) * 1982-03-02 1991-10-31 Sony Corp
JPS58168382A (en) * 1982-03-30 1983-10-04 Victor Co Of Japan Ltd Printing device
JPS58196784A (en) * 1982-05-12 1983-11-16 Sony Corp Gradation converting device of video signal
JPS59226579A (en) * 1983-06-08 1984-12-19 Mitsubishi Electric Corp Printer of television receiver
JPS60198964A (en) * 1984-03-22 1985-10-08 Canon Inc Multi-gradation printer
JPS6294359A (en) * 1985-10-21 1987-04-30 Matsushita Electric Ind Co Ltd Thermal recording apparatus
JPS63108867A (en) * 1986-10-24 1988-05-13 Minolta Camera Co Ltd Method and device for multigradation thermal transfer and recording
US4806949A (en) * 1986-10-24 1989-02-21 Minolta Camera Kabushiki Kaisha Multitone thermal transfer recording method and apparatus
US5142301A (en) * 1989-12-25 1992-08-25 Oki Electric Industry Co., Ltd. Gradation control circuit for a thermal head
JPH0789116A (en) * 1993-11-22 1995-04-04 Ricoh Co Ltd Drive device for recording head

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