JPS55111276A - Print checking system in printer - Google Patents

Print checking system in printer

Info

Publication number
JPS55111276A
JPS55111276A JP1887979A JP1887979A JPS55111276A JP S55111276 A JPS55111276 A JP S55111276A JP 1887979 A JP1887979 A JP 1887979A JP 1887979 A JP1887979 A JP 1887979A JP S55111276 A JPS55111276 A JP S55111276A
Authority
JP
Japan
Prior art keywords
signal
printing head
alarm
operating circuit
printing
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
JP1887979A
Other languages
Japanese (ja)
Inventor
Yukio Fuchinabe
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1887979A priority Critical patent/JPS55111276A/en
Publication of JPS55111276A publication Critical patent/JPS55111276A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect the rotation of a printing head when it continues to rotate by generation of a print checking signal in a period from an estimated time where the rotation of the printing head comes to a stop to a time where a hammer started its operation.
CONSTITUTION: In a signal K for checking the printing action, in a period from an estimated time t1 where the speed signal of the printing head becomes zero to a time t2 where the hammer finishes its printing action, the signal is generated at an operating circuit 3 while the timing of a position pulse lock designating signal is observed. When the speed signal of the printing head becomes the proximity of zero, there is no output at the point D. Upon this occasion, even when the check signal is generated, a comparison operating circuit 11 does not act, and no alarm appears at an alarm delivering terminal 12. However, when the printing head continues to rotate due to any trouble or the like of the motor or motor driving circuit, and the speed signal is not lowered from the value of +Vs the comparison operating circuit 11 operates by the check signal K, and an alarm signal is obtained at the alarm delivering terminal 12.
COPYRIGHT: (C)1980,JPO&Japio
JP1887979A 1979-02-20 1979-02-20 Print checking system in printer Pending JPS55111276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1887979A JPS55111276A (en) 1979-02-20 1979-02-20 Print checking system in printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1887979A JPS55111276A (en) 1979-02-20 1979-02-20 Print checking system in printer

Publications (1)

Publication Number Publication Date
JPS55111276A true JPS55111276A (en) 1980-08-27

Family

ID=11983831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1887979A Pending JPS55111276A (en) 1979-02-20 1979-02-20 Print checking system in printer

Country Status (1)

Country Link
JP (1) JPS55111276A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61279576A (en) * 1985-06-05 1986-12-10 Matsushita Electric Ind Co Ltd Electronic typewriter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61279576A (en) * 1985-06-05 1986-12-10 Matsushita Electric Ind Co Ltd Electronic typewriter

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