JPS56181A - Power circuit of printer - Google Patents

Power circuit of printer

Info

Publication number
JPS56181A
JPS56181A JP7526179A JP7526179A JPS56181A JP S56181 A JPS56181 A JP S56181A JP 7526179 A JP7526179 A JP 7526179A JP 7526179 A JP7526179 A JP 7526179A JP S56181 A JPS56181 A JP S56181A
Authority
JP
Japan
Prior art keywords
turned
control circuit
printer
transistor
battery
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
JP7526179A
Other languages
Japanese (ja)
Inventor
Hideo Hirao
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP7526179A priority Critical patent/JPS56181A/en
Publication of JPS56181A publication Critical patent/JPS56181A/en
Pending legal-status Critical Current

Links

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

PURPOSE: To prevent a malfunction of the control circuit by providing a detector, which detects a drop of battery voltage, to the power circuit for the control circuit in a printer the energy source of which is a battery.
CONSTITUTION: When the switch 2 is turned on, the transistor 10 is turned on by a charge current of the capacitor 11 and a constant voltage is applied to the control circuit. When the battery voltage is dissipated and lowered from a set value due to the hammer driving, the transistor 10 is turned off, the current to the control circuit is cut off, the base current of the transistor for driving the step motor and electromagnet is also cut off, and operation of the printer is halted. Simultaneously a clock of 2Hz is developed at the output of the NOR gate 16, a clock of 32Hz modulated in 2Hz is applied across the segment and common electrodes of the liquid crystal pannel 18 in a reverse phase, and the liquid crystal panel 18 that displays the power consumption is turned on and off. Accordingly the fact that a charging is required for the battery can be displayed.
COPYRIGHT: (C)1981,JPO&Japio
JP7526179A 1979-06-15 1979-06-15 Power circuit of printer Pending JPS56181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7526179A JPS56181A (en) 1979-06-15 1979-06-15 Power circuit of printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7526179A JPS56181A (en) 1979-06-15 1979-06-15 Power circuit of printer

Publications (1)

Publication Number Publication Date
JPS56181A true JPS56181A (en) 1981-01-06

Family

ID=13571093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7526179A Pending JPS56181A (en) 1979-06-15 1979-06-15 Power circuit of printer

Country Status (1)

Country Link
JP (1) JPS56181A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59204739A (en) * 1983-05-09 1984-11-20 イリノイ　ツール　ワークス　インコーポレーテッド Device for measuring rolling resistance of tire
JPS59232891A (en) * 1983-06-16 1984-12-27 Matsushita Electric Ind Co Ltd Printer apparatus
US4945551A (en) * 1985-07-19 1990-07-31 Shimadzu Corporation Soft X-ray lithographic system
EP0587385A2 (en) * 1992-09-08 1994-03-16 Canon Kabushiki Kaisha Printing apparatus and method of charging battery there in

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59204739A (en) * 1983-05-09 1984-11-20 イリノイ　ツール　ワークス　インコーポレーテッド Device for measuring rolling resistance of tire
JPH0554058B2 (en) * 1983-05-09 1993-08-11 Illinois Tool Works
JPS59232891A (en) * 1983-06-16 1984-12-27 Matsushita Electric Ind Co Ltd Printer apparatus
US4945551A (en) * 1985-07-19 1990-07-31 Shimadzu Corporation Soft X-ray lithographic system
EP0587385A2 (en) * 1992-09-08 1994-03-16 Canon Kabushiki Kaisha Printing apparatus and method of charging battery there in
EP0587385A3 (en) * 1992-09-08 1995-06-14 Canon Kk Printing apparatus and method of charging battery there in.
US5631677A (en) * 1992-09-08 1997-05-20 Canon Kabushiki Kaisha Printing apparatus and method of charging battery therein

Similar Documents

Publication Publication Date Title
GB1434947A (en) Control device for a step-by-step motor
JPS5324798A (en) Driving circuit of electrochromic display device
EP1139551A3 (en) Charge pump type power supply circuit and driving circuit for display device and display device using such power supply circuit
KR940006325A (en) Charging device
KR960005689B1 (en) Power supplies for electric device
JPS56181A (en) Power circuit of printer
JPS6111071B2 (en)
JPS542096A (en) Drive unit for liquid crystal matrix panel
JPS53114391A (en) Driving power circuit for liquid crystal
JPS5274296A (en) Liquid crystal driving circuit
JPS5487430A (en) Driver circuit
JPS5617414A (en) Electric power supply system of electronic apparatus
JPH0239272Y2 (en)
JPS5492097A (en) Liquid crystal display unit
JPS5797929A (en) Drive circuit of electromagnetic clutch
JPS5475518A (en) Electronic clock
JPS54109124A (en) Transistor drive circuit
JPS6281984U (en)
JPS5669908A (en) Field effect transistor circuit with protecting circuit
JPS5344196A (en) Liquid crystal driving system
JPS52149494A (en) Liquid crystal display device
JPS553025A (en) Electronic apparatus
JPH01225995A (en) Power source controlling circuit for liquid crystal
JP2000028756A (en) Pointer driving system
JPS5663286A (en) Display device of electronic timepiece