JPS5658885A - Tone representing method for heat-sensitive printer - Google Patents

Tone representing method for heat-sensitive printer

Info

Publication number
JPS5658885A
JPS5658885A JP13463279A JP13463279A JPS5658885A JP S5658885 A JPS5658885 A JP S5658885A JP 13463279 A JP13463279 A JP 13463279A JP 13463279 A JP13463279 A JP 13463279A JP S5658885 A JPS5658885 A JP S5658885A
Authority
JP
Japan
Prior art keywords
heat
thermal head
dots
dot
sensitive
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
JP13463279A
Other languages
Japanese (ja)
Inventor
Keiichi Horitani
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.)
Toshiba TEC Corp
Original Assignee
Tokyo 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP13463279A priority Critical patent/JPS5658885A/en
Publication of JPS5658885A publication Critical patent/JPS5658885A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection

Landscapes

  • Electronic Switches (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

PURPOSE:To enable to obtain a fine tone reproduction without changing the density of dots by a method wherein the optical concentration of the dots is changed by increasing and decreasing the thermal energy. CONSTITUTION:A thermal head is provided which is fed intermittently and transversely with respect to a heat-sensitive papaer 1. After the line feed of the thermal head is conducted, the heat-sensitive paper 1 is fed longitudinally by a predetermined span at a time, and the geometrical density of the dots 2 is determined by the combination of the longitudinal feed span of the paper 1 and the transverse feed span of the thermal head. The heat capacity of the thermal head is extremely small. The image to be represented on the heat-sensitive paper 1 is converted into electrical signals, and current is supplied at the position of each dot 2, whereby thermal energy is applied to the heat-sensitive paper 1 to cause a color change, embodying the dot 2. Since the duration of the current supply for the thermal head at the position of each dot 2 is set in gradation, the dots 2 are provided with plural kinkds of colors and the assembly thereof represents an image full of tone including halftone.
JP13463279A 1979-10-18 1979-10-18 Tone representing method for heat-sensitive printer Pending JPS5658885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13463279A JPS5658885A (en) 1979-10-18 1979-10-18 Tone representing method for heat-sensitive printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13463279A JPS5658885A (en) 1979-10-18 1979-10-18 Tone representing method for heat-sensitive printer

Publications (1)

Publication Number Publication Date
JPS5658885A true JPS5658885A (en) 1981-05-22

Family

ID=15132903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13463279A Pending JPS5658885A (en) 1979-10-18 1979-10-18 Tone representing method for heat-sensitive printer

Country Status (1)

Country Link
JP (1) JPS5658885A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012493A1 (en) * 1993-11-01 1995-05-11 Lasermaster Corporation Method and apparatus for controlling a thermal print head
US5519426A (en) * 1993-11-01 1996-05-21 Lasermaster Corporation Method for controlling a thermal printer to increase resolution

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012493A1 (en) * 1993-11-01 1995-05-11 Lasermaster Corporation Method and apparatus for controlling a thermal print head
US5519426A (en) * 1993-11-01 1996-05-21 Lasermaster Corporation Method for controlling a thermal printer to increase resolution
BE1008619A3 (en) * 1993-11-01 1996-06-04 Lasermaster Corp Control method and equipment of a thermal printing head.

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