JPS56101155A - Central control device of copying machine - Google Patents

Central control device of copying machine

Info

Publication number
JPS56101155A
JPS56101155A JP326480A JP326480A JPS56101155A JP S56101155 A JPS56101155 A JP S56101155A JP 326480 A JP326480 A JP 326480A JP 326480 A JP326480 A JP 326480A JP S56101155 A JPS56101155 A JP S56101155A
Authority
JP
Japan
Prior art keywords
lines
write
read
energizing
data
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
JP326480A
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 JP326480A priority Critical patent/JPS56101155A/en
Publication of JPS56101155A publication Critical patent/JPS56101155A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To decrease the number of data line by connecting display energizing data lines to one set of I/O of a 1-chip microcomputer, connecting the address lines of an RAM to these and connecting read-write control lines to the other one set of I/O. CONSTITUTION:The common lines of the address data lines and memory data lines of a nonvolatile RAMIC2 are connected to 6 lines among 7-energizing lines of the character displays CHD1-CHD3 of a 1-chip microcomputer IC1. Diagnosis data have been stored in the IC2, and the read and write of the IC2 as well as the light emission energizing of the CHD1-CHD3 are accomplished in time sharing mode based on the programs having been set in the IC1. The programs for changing the read-write addresses of the IC2 at every predetermined counting are provided in order to cope with the decrease in storage holding period owing to the increase in the write erasing times which are the point of problem with the MNOS chip IC2.
JP326480A 1980-01-16 1980-01-16 Central control device of copying machine Pending JPS56101155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP326480A JPS56101155A (en) 1980-01-16 1980-01-16 Central control device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP326480A JPS56101155A (en) 1980-01-16 1980-01-16 Central control device of copying machine

Publications (1)

Publication Number Publication Date
JPS56101155A true JPS56101155A (en) 1981-08-13

Family

ID=11552599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP326480A Pending JPS56101155A (en) 1980-01-16 1980-01-16 Central control device of copying machine

Country Status (1)

Country Link
JP (1) JPS56101155A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5981653A (en) * 1982-10-30 1984-05-11 Toshiba Corp Control circuit of copying machine
JPS6098447A (en) * 1983-11-04 1985-06-01 Fuji Xerox Co Ltd Non-volatile storage device for control device of copying machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5981653A (en) * 1982-10-30 1984-05-11 Toshiba Corp Control circuit of copying machine
JPS6098447A (en) * 1983-11-04 1985-06-01 Fuji Xerox Co Ltd Non-volatile storage device for control device of copying machine

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