JPS5791277A - Detection system for printing failure - Google Patents

Detection system for printing failure

Info

Publication number
JPS5791277A
JPS5791277A JP55166549A JP16654980A JPS5791277A JP S5791277 A JPS5791277 A JP S5791277A JP 55166549 A JP55166549 A JP 55166549A JP 16654980 A JP16654980 A JP 16654980A JP S5791277 A JPS5791277 A JP S5791277A
Authority
JP
Japan
Prior art keywords
printing
impact
signal
detecting
memory means
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
JP55166549A
Other languages
Japanese (ja)
Inventor
Akiyasu Miyazawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55166549A priority Critical patent/JPS5791277A/en
Publication of JPS5791277A publication Critical patent/JPS5791277A/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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/44—Control for hammer-impression mechanisms
    • B41J9/52—Control for hammer-impression mechanisms for checking the operation of print hammers
    • B41J9/54—Control for hammer-impression mechanisms for checking the operation of print hammers for checking the breakage of print hammers

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

PURPOSE:To prevent possible omission of characters to be printed by detecting breakage of a dot wire, non-operation of a printing magnet and the like by means of a pressure-sensitive sensor for detecting an impact and a memory means in an impact type printer. CONSTITUTION:In an impact type printer comprising a printing magnet 1, a shuttle bar 2, a platen 5 and the like, a pressure-sensitive sensor 5a for detecting an impact during the printing and a memory means for temporarily storing an OR signal of an output signal thereof and an impact command signal. With such an arrangement, in the normal condition, namely, when the printing command signal coincides with the output signal of the sensor, no warning is given. But, when any sensor signal is not produced due to the abnormality such as breakage of a dot wire inspite of a printing command signal being outputted, the memory means provides a warning to halt the operation of the printer.
JP55166549A 1980-11-28 1980-11-28 Detection system for printing failure Pending JPS5791277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166549A JPS5791277A (en) 1980-11-28 1980-11-28 Detection system for printing failure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166549A JPS5791277A (en) 1980-11-28 1980-11-28 Detection system for printing failure

Publications (1)

Publication Number Publication Date
JPS5791277A true JPS5791277A (en) 1982-06-07

Family

ID=15833322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166549A Pending JPS5791277A (en) 1980-11-28 1980-11-28 Detection system for printing failure

Country Status (1)

Country Link
JP (1) JPS5791277A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772140A (en) * 1985-08-06 1988-09-20 Alps Electric Co., Ltd. Print head drive system with trouble detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772140A (en) * 1985-08-06 1988-09-20 Alps Electric Co., Ltd. Print head drive system with trouble detector

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