JPS557649A - Photo encoder - Google Patents

Photo encoder

Info

Publication number
JPS557649A
JPS557649A JP8053778A JP8053778A JPS557649A JP S557649 A JPS557649 A JP S557649A JP 8053778 A JP8053778 A JP 8053778A JP 8053778 A JP8053778 A JP 8053778A JP S557649 A JPS557649 A JP S557649A
Authority
JP
Japan
Prior art keywords
slit
disc
slit disc
contact
detection part
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
JP8053778A
Other languages
Japanese (ja)
Inventor
Toshiaki Ozawa
Yasuaki Yamada
Hiroatsu Kondo
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP8053778A priority Critical patent/JPS557649A/en
Priority to DE2954671A priority patent/DE2954671C2/de
Priority to DE19792926819 priority patent/DE2926819A1/en
Publication of JPS557649A publication Critical patent/JPS557649A/en
Priority to US07/011,397 priority patent/US4775253A/en
Pending legal-status Critical Current

Links

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  • Optical Transform (AREA)

Abstract

PURPOSE: To stabilize the performance, by specifying the material of the slit disc and the method of holding.
CONSTITUTION: The slit disc 3 turned between the light emitting part 4 and the photo detection part 7 and fitted on the motor shaft 2a, is formed with elastic material, and the disc is in contact with the slit disc positioning member 10 with slight deflection. Thus, the slit disc 3 is revolved with the condition that is is pressed on the index slit 9 at all times. Even if the slit disc 3 has greater bending, it is in contact with the index slit 9 with the elasticity of itself to keep the distance between the both constant. Accordingly, the output of the photo detection part 7 is always stable to enable having accurate control.
COPYRIGHT: (C)1980,JPO&Japio
JP8053778A 1978-07-04 1978-07-04 Photo encoder Pending JPS557649A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8053778A JPS557649A (en) 1978-07-04 1978-07-04 Photo encoder
DE2954671A DE2954671C2 (en) 1978-07-04 1979-07-03
DE19792926819 DE2926819A1 (en) 1978-07-04 1979-07-03 PRINTER
US07/011,397 US4775253A (en) 1978-07-04 1987-02-04 Printer with a movable carriage and a light source mounted off the carriage for positioning a type element mounted on the carriage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8053778A JPS557649A (en) 1978-07-04 1978-07-04 Photo encoder

Publications (1)

Publication Number Publication Date
JPS557649A true JPS557649A (en) 1980-01-19

Family

ID=13721095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8053778A Pending JPS557649A (en) 1978-07-04 1978-07-04 Photo encoder

Country Status (1)

Country Link
JP (1) JPS557649A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57151816A (en) * 1981-02-17 1982-09-20 Olivetti & Co Spa Optical transducer
JPS6089711A (en) * 1983-10-21 1985-05-20 Canon Inc Rotary encoder
JPS6089710A (en) * 1983-10-21 1985-05-20 Canon Inc Rotary encoder
JPS623618A (en) * 1985-06-29 1987-01-09 Sony Corp Optical encoder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57151816A (en) * 1981-02-17 1982-09-20 Olivetti & Co Spa Optical transducer
JPS6089711A (en) * 1983-10-21 1985-05-20 Canon Inc Rotary encoder
JPS6089710A (en) * 1983-10-21 1985-05-20 Canon Inc Rotary encoder
JPH0472169B2 (en) * 1983-10-21 1992-11-17 Canon Kk
JPH0472168B2 (en) * 1983-10-21 1992-11-17 Canon Kk
JPS623618A (en) * 1985-06-29 1987-01-09 Sony Corp Optical encoder

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