JPS5574640A - Pattern selection and scanning unit - Google Patents

Pattern selection and scanning unit

Info

Publication number
JPS5574640A
JPS5574640A JP14750878A JP14750878A JPS5574640A JP S5574640 A JPS5574640 A JP S5574640A JP 14750878 A JP14750878 A JP 14750878A JP 14750878 A JP14750878 A JP 14750878A JP S5574640 A JPS5574640 A JP S5574640A
Authority
JP
Japan
Prior art keywords
information
control circuit
motor
erase
pattern
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
JP14750878A
Other languages
Japanese (ja)
Inventor
Isamu Shibata
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 JP14750878A priority Critical patent/JPS5574640A/en
Publication of JPS5574640A publication Critical patent/JPS5574640A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To erase the residual image efficiently and surely at all times, by continuously performing the partial erase on the target surface through sequential address change and avoiding useless erase time after the readout instruction.
CONSTITUTION: The pattern designation code is given to the control circuit 1, and accessing of information inputted to the pickup tube 5 from the information on the pattern disc fitted to the motor 3 with the servo control circuit 2. Further, the area of the information designated from the control circuit 6 when the motor 3 is turned and access is made, and the part of the position detection mark detecting this area are erased, and when no pattern designation input is present, the partial erase of the target surface for the pickup tube 5 is continuously made by changing the address sequentially. Further, when the access is finished, the circtuit 2 detects the stop of the motor 3 and after performing the pattern position detection with the curcuit 7, the designated position information is pictured on the CRT9.
COPYRIGHT: (C)1980,JPO&Japio
JP14750878A 1978-11-29 1978-11-29 Pattern selection and scanning unit Pending JPS5574640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14750878A JPS5574640A (en) 1978-11-29 1978-11-29 Pattern selection and scanning unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14750878A JPS5574640A (en) 1978-11-29 1978-11-29 Pattern selection and scanning unit

Publications (1)

Publication Number Publication Date
JPS5574640A true JPS5574640A (en) 1980-06-05

Family

ID=15431939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14750878A Pending JPS5574640A (en) 1978-11-29 1978-11-29 Pattern selection and scanning unit

Country Status (1)

Country Link
JP (1) JPS5574640A (en)

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