JPS5544864A - Protective circuit for dot printer - Google Patents

Protective circuit for dot printer

Info

Publication number
JPS5544864A
JPS5544864A JP11901878A JP11901878A JPS5544864A JP S5544864 A JPS5544864 A JP S5544864A JP 11901878 A JP11901878 A JP 11901878A JP 11901878 A JP11901878 A JP 11901878A JP S5544864 A JPS5544864 A JP S5544864A
Authority
JP
Japan
Prior art keywords
transistor
power supply
voltage
solenoids
protective circuit
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
JP11901878A
Other languages
Japanese (ja)
Inventor
Hideaki Aya
Satoru Naoi
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP11901878A priority Critical patent/JPS5544864A/en
Publication of JPS5544864A publication Critical patent/JPS5544864A/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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns

Landscapes

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

Abstract

PURPOSE:Standard protective circuit of which maintenance and inspection can be facilitated and which can prevent a solenoid from being lost by burning provided with a voltage shut-off means installed between a power supply and a drive circuit for use in shutting off the power supply voltage to be applied to a solenoid in reference to an output from means for discriminating the voltage. CONSTITUTION:Power supply voltage +Vp is applied to the solenoids 141-147 via collector-emitter of the transistor 293. For example, under the transistor 261 got trouble and the emitter voltage showed an extreme high value, the Zener diode 281 and the thyrister 292 are made to be conductive to cause the base of the transistor 293 to be short circuited to the ground. Thereby, the transistor 293 is caused to be non-conductive to shut off the power supply voltage +Vp applied to the solenoids 141-147. The thyrister 292 can hold the situation to protect the solenoids 141-147 and the transistors 261-267.
JP11901878A 1978-09-26 1978-09-26 Protective circuit for dot printer Pending JPS5544864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11901878A JPS5544864A (en) 1978-09-26 1978-09-26 Protective circuit for dot printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11901878A JPS5544864A (en) 1978-09-26 1978-09-26 Protective circuit for dot printer

Publications (1)

Publication Number Publication Date
JPS5544864A true JPS5544864A (en) 1980-03-29

Family

ID=14750940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11901878A Pending JPS5544864A (en) 1978-09-26 1978-09-26 Protective circuit for dot printer

Country Status (1)

Country Link
JP (1) JPS5544864A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56166590A (en) * 1980-05-27 1981-12-21 Nec Corp Control system for dot line printer
JPS5776050U (en) * 1980-10-30 1982-05-11
JPS6349961U (en) * 1986-09-19 1988-04-05
JP2001130114A (en) * 1999-11-05 2001-05-15 Funai Electric Co Ltd Printer and printing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56166590A (en) * 1980-05-27 1981-12-21 Nec Corp Control system for dot line printer
JPH0242673B2 (en) * 1980-05-27 1990-09-25
JPS5776050U (en) * 1980-10-30 1982-05-11
JPS6349961U (en) * 1986-09-19 1988-04-05
JP2001130114A (en) * 1999-11-05 2001-05-15 Funai Electric Co Ltd Printer and printing system
JP4507313B2 (en) * 1999-11-05 2010-07-21 船井電機株式会社 Printing device and printing system

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