JPS57125067A - Thermal printer - Google Patents

Thermal printer

Info

Publication number
JPS57125067A
JPS57125067A JP56010139A JP1013981A JPS57125067A JP S57125067 A JPS57125067 A JP S57125067A JP 56010139 A JP56010139 A JP 56010139A JP 1013981 A JP1013981 A JP 1013981A JP S57125067 A JPS57125067 A JP S57125067A
Authority
JP
Japan
Prior art keywords
heat generating
circuit
address
drivers
given
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
JP56010139A
Other languages
Japanese (ja)
Other versions
JPS6238148B2 (en
Inventor
Yukio Suga
Matsusaburo Noguchi
Kotaro Yoshimura
Koji Kajikawa
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP56010139A priority Critical patent/JPS57125067A/en
Publication of JPS57125067A publication Critical patent/JPS57125067A/en
Publication of JPS6238148B2 publication Critical patent/JPS6238148B2/ja
Granted 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 obtain the quality of printing that gives no ambiguities that will cause the reader to misread by printing a dot to be printed by an abnormal heat generating element by the heat generating element located adjacent to it when the abnormality is detected. CONSTITUTION:Under the condition that the drivers for all heat generating elements off by giving test command TS to the control circuits 3 for a test mode, detection command is issued to an abnormal element detection circuit 4 to check the existence of electric current to all the heat generating elements. When electric current is detected, after a pattern data that turns on drivers of all heat generating elements is given to a line buffer 5, a pattern data that changes over progressively the drivers that are turned off from the first row is given, and the circuit 4 watches current value to retrieve the address of an abnormal heat generating element and the address is stored in a memory circuit 6. Next, a pattern PD that is to be printed is stored in the line buffer 5 via a compensation circuit 7, and write pulses WP that are supplied from a write pulse generating circuit 8 are counted by an address counter 9, and the counting is given to a comparison circuit 10 and it is compared with the address of the abnormal heat generating element.
JP56010139A 1981-01-28 1981-01-28 Thermal printer Granted JPS57125067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56010139A JPS57125067A (en) 1981-01-28 1981-01-28 Thermal printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56010139A JPS57125067A (en) 1981-01-28 1981-01-28 Thermal printer

Publications (2)

Publication Number Publication Date
JPS57125067A true JPS57125067A (en) 1982-08-04
JPS6238148B2 JPS6238148B2 (en) 1987-08-17

Family

ID=11741942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56010139A Granted JPS57125067A (en) 1981-01-28 1981-01-28 Thermal printer

Country Status (1)

Country Link
JP (1) JPS57125067A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185664A (en) * 1983-04-07 1984-10-22 Nagano Nippon Musen Kk Recording method of heat sensitive type recording apparatus
JPH04246549A (en) * 1991-02-01 1992-09-02 Sharp Corp Driver of printer head
JPH04286657A (en) * 1991-03-18 1992-10-12 Fujitsu Ltd Circuit for detecting abnormality of piezoelectric element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185664A (en) * 1983-04-07 1984-10-22 Nagano Nippon Musen Kk Recording method of heat sensitive type recording apparatus
JPH04246549A (en) * 1991-02-01 1992-09-02 Sharp Corp Driver of printer head
JPH04286657A (en) * 1991-03-18 1992-10-12 Fujitsu Ltd Circuit for detecting abnormality of piezoelectric element

Also Published As

Publication number Publication date
JPS6238148B2 (en) 1987-08-17

Similar Documents

Publication Publication Date Title
US4284876A (en) Thermal printing system
US3944724A (en) Paging system with selectively actuable pocket printers
MX9505305A (en) Ink supply identification system.
EP0217043A1 (en) Thermal print head heating circuit fault detection device
JPH0542351B2 (en)
EP0072224B1 (en) A device for checking the printing circuit of a thermal printer
US4411540A (en) Printing apparatus
GB1127475A (en) Improvements in or relating to control systems
JPS57125067A (en) Thermal printer
US2885146A (en) Electronic checking device
US3366044A (en) Demand controlled print rate equalizer for high speed printers
US2800280A (en) Comparing system
US3423641A (en) Hammer firing circuit for impact printers
JPH0550638A (en) Thermal printer
US2900572A (en) Electric storage and data routing apparatus
US3700807A (en) Impactless printer
JPS5741771A (en) Controller of dot printer
JPS62279964A (en) Thermal head controlling method
JP2659571B2 (en) Paper feeder
JPS6092875A (en) Thermal printer
JPH0312531Y2 (en)
US3191154A (en) Printing machines
US3043501A (en) Device for transferring measurements recorded by printed code symbols to punched cards
JPH0129096Y2 (en)
US3975716A (en) Arrangement in connection with a printer with keyboard for printing data in plain language and simultaneously recording corresponding coded data