JPS5591081A - Fault detection method for printer printing head - Google Patents

Fault detection method for printer printing head

Info

Publication number
JPS5591081A
JPS5591081A JP16348078A JP16348078A JPS5591081A JP S5591081 A JPS5591081 A JP S5591081A JP 16348078 A JP16348078 A JP 16348078A JP 16348078 A JP16348078 A JP 16348078A JP S5591081 A JPS5591081 A JP S5591081A
Authority
JP
Japan
Prior art keywords
circuit
output signal
printing head
driver
head
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
JP16348078A
Other languages
Japanese (ja)
Inventor
Hitoshi Mori
Shinichi Matsushita
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 JP16348078A priority Critical patent/JPS5591081A/en
Publication of JPS5591081A publication Critical patent/JPS5591081A/en
Pending legal-status Critical Current

Links

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Impact Printers (AREA)

Abstract

PURPOSE: To secure the early detection for the fault of the printing head by delivering the output of the printing head driver to the two-way data bus and then comparing the output signal with the printer data.
CONSTITUTION: Latch circuit 2 holds the printer data delivered onto data bus 1. The output signal sent from circuit 2 is supplied to head driver 5, and printing head 4 is driven by the pulse of a fixed time duration produced at printing width setting circuit 9. Output 6 of driver 5 is supplied also to level converter circuit 7 to receive the level conversion. The output signal of circuit 7 receives the control by tristate gate 11 which opens/closes the gate via the signal same as the output signal given from circuit 9. Thus the printer data and the output signal from driver 5 are delivered alternately and in pile onto bus 1. The constant comparison is given between these two signals, thus detecting the fault of head 4 in an easy way.
COPYRIGHT: (C)1980,JPO&Japio
JP16348078A 1978-12-28 1978-12-28 Fault detection method for printer printing head Pending JPS5591081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16348078A JPS5591081A (en) 1978-12-28 1978-12-28 Fault detection method for printer printing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16348078A JPS5591081A (en) 1978-12-28 1978-12-28 Fault detection method for printer printing head

Publications (1)

Publication Number Publication Date
JPS5591081A true JPS5591081A (en) 1980-07-10

Family

ID=15774670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16348078A Pending JPS5591081A (en) 1978-12-28 1978-12-28 Fault detection method for printer printing head

Country Status (1)

Country Link
JP (1) JPS5591081A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134774A (en) * 1982-02-05 1983-08-11 Usac Electronics Ind Co Ltd Abnormality-detecting system for head system in printer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134774A (en) * 1982-02-05 1983-08-11 Usac Electronics Ind Co Ltd Abnormality-detecting system for head system in printer
JPH0371274B2 (en) * 1982-02-05 1991-11-12 Pfu Ltd

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