JPS6467365A - Thermal printer - Google Patents

Thermal printer

Info

Publication number
JPS6467365A
JPS6467365A JP22600487A JP22600487A JPS6467365A JP S6467365 A JPS6467365 A JP S6467365A JP 22600487 A JP22600487 A JP 22600487A JP 22600487 A JP22600487 A JP 22600487A JP S6467365 A JPS6467365 A JP S6467365A
Authority
JP
Japan
Prior art keywords
circuit
printing
processor
data
dot
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
JP22600487A
Other languages
Japanese (ja)
Inventor
Kenichi Itahara
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP22600487A priority Critical patent/JPS6467365A/en
Publication of JPS6467365A publication Critical patent/JPS6467365A/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

Abstract

PURPOSE:To enable high-speed and clear printing through flexible correspondence with printing conditions, without enlarging the scale of circuitry, by holding each printing bit data on a thermal head in a printing history holding circuit, sending data necessary for obtaining an optimum driving time for each dot to a microprocessor by a selecting circuit, and giving an instruction to a driving circuit to flow an electric current to heat generating elements in the head. CONSTITUTION:A microprocessor 1 operates according to a microprogram, and sends printing/non-printing data on each dot of a thermal head 5 to a printing history holding circuit 2. While the circuit 2 holds sequentially the printing bit data supplied from the processor 1, and gives an output to a history data selecting circuit 3. The circuit 3 selects data necessary for control of driving time on a dot basis, and sends the data to the processor 1. The processor 1 supplies a driving circuit with an ON/OFF timing for an internal circuit of the driving circuit 4 for obtaining an optimum driving time, and the circuit 4 turns ON/OFF the internal circuit according to the instruction from the processor 1, thereby flowing an electric current to the head 5, thereby the uniformity in the printing is maintained.
JP22600487A 1987-09-08 1987-09-08 Thermal printer Pending JPS6467365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22600487A JPS6467365A (en) 1987-09-08 1987-09-08 Thermal printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22600487A JPS6467365A (en) 1987-09-08 1987-09-08 Thermal printer

Publications (1)

Publication Number Publication Date
JPS6467365A true JPS6467365A (en) 1989-03-14

Family

ID=16838278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22600487A Pending JPS6467365A (en) 1987-09-08 1987-09-08 Thermal printer

Country Status (1)

Country Link
JP (1) JPS6467365A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346318A (en) * 1991-10-03 1994-09-13 Mitsubishi Denki Kabushiki Kaisha Thermal recording head driving device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160169A (en) * 1982-03-18 1983-09-22 Shinko Electric Co Ltd Thermal printer
JPS60139464A (en) * 1983-12-28 1985-07-24 Fuji Xerox Co Ltd Thermal head driving apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160169A (en) * 1982-03-18 1983-09-22 Shinko Electric Co Ltd Thermal printer
JPS60139464A (en) * 1983-12-28 1985-07-24 Fuji Xerox Co Ltd Thermal head driving apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346318A (en) * 1991-10-03 1994-09-13 Mitsubishi Denki Kabushiki Kaisha Thermal recording head driving device

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