JPS5569157A - Memory control system at power supply interruption of copying machine - Google Patents

Memory control system at power supply interruption of copying machine

Info

Publication number
JPS5569157A
JPS5569157A JP14272178A JP14272178A JPS5569157A JP S5569157 A JPS5569157 A JP S5569157A JP 14272178 A JP14272178 A JP 14272178A JP 14272178 A JP14272178 A JP 14272178A JP S5569157 A JPS5569157 A JP S5569157A
Authority
JP
Japan
Prior art keywords
volatile
power supply
data
signal
memories
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
JP14272178A
Other languages
Japanese (ja)
Inventor
Masao Hosaka
Yoshitaka Ogino
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14272178A priority Critical patent/JPS5569157A/en
Publication of JPS5569157A publication Critical patent/JPS5569157A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To eliminate the occurrence of troubles at the re-driving by evacuating necessary data into non-volatile memories and having the mode of the copying operation stored at the power source interruption. CONSTITUTION:When a CPU U1 detects power supply DOWN, it passes necessary data through an input-output control element U7, sends timing signal E/W, etc. to the respective terminals of a non-volatile memory control element U15 and applies the non-volatile data pushing signal to the terminals MG of non-volatile memories U13 and U14 to have them written in the non-volatile memories by MNOS gate input signal thereby storing them as non-volatile data. To read out these non- volatile data, initial resetting is done by turning on of power supply, after which the U1 sends the timing signal E/W, etc. to the element U15 through the element U7 and inputs the non-volatile data poping signal to the memories U13 and U14. As a result of this, the CPU determines the execution concerning copy run and therefore the occurrence of troubles at the re-driving may be prevented.
JP14272178A 1978-11-18 1978-11-18 Memory control system at power supply interruption of copying machine Pending JPS5569157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14272178A JPS5569157A (en) 1978-11-18 1978-11-18 Memory control system at power supply interruption of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14272178A JPS5569157A (en) 1978-11-18 1978-11-18 Memory control system at power supply interruption of copying machine

Publications (1)

Publication Number Publication Date
JPS5569157A true JPS5569157A (en) 1980-05-24

Family

ID=15322024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14272178A Pending JPS5569157A (en) 1978-11-18 1978-11-18 Memory control system at power supply interruption of copying machine

Country Status (1)

Country Link
JP (1) JPS5569157A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160960A (en) * 1982-03-18 1983-09-24 Copyer Co Ltd Method for storing state of operation of copying machine
JPH0852924A (en) * 1995-03-24 1996-02-27 Casio Electron Mfg Co Ltd Image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160960A (en) * 1982-03-18 1983-09-24 Copyer Co Ltd Method for storing state of operation of copying machine
JPH0852924A (en) * 1995-03-24 1996-02-27 Casio Electron Mfg Co Ltd Image forming apparatus

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