JPS6410124A - Encoder - Google Patents

Encoder

Info

Publication number
JPS6410124A
JPS6410124A JP16621987A JP16621987A JPS6410124A JP S6410124 A JPS6410124 A JP S6410124A JP 16621987 A JP16621987 A JP 16621987A JP 16621987 A JP16621987 A JP 16621987A JP S6410124 A JPS6410124 A JP S6410124A
Authority
JP
Japan
Prior art keywords
scale
carriage
projection system
photodetection
light
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
JP16621987A
Other languages
Japanese (ja)
Inventor
Kimio Nishitani
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 JP16621987A priority Critical patent/JPS6410124A/en
Publication of JPS6410124A publication Critical patent/JPS6410124A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To find the quantity of the relative movement of a photosensor part with a scale by projecting light on the scale slantingly and photodetecting its reflected luminous flux through a slit opening part bored in a front surface. CONSTITUTION:The photosensor part 1 is units with a carriage 3 and moves horizontally on the paper surface. The scale 2 is fixed to a printing main body 7 and the projection system and photodetection system of the photosensor part 1 are arranged closely to only one side of the scale 2. The light projected by the projection system 5 is incident on the scale 2. The projection system 5 and photodetection system 6 move closely to the surface of the scale 2 in parallel to the surface of the scale 2 as the carriage 3 moves. The photodetecting means of the photodetection part 6 photodetects the pulsating reflected light. Then the light signal is converted into an electric signal, whose electric pulses are counted to detect the displacement from a reference position; and the position of the carriage is decided and an optical position of the carriage is specified.
JP16621987A 1987-07-02 1987-07-02 Encoder Pending JPS6410124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16621987A JPS6410124A (en) 1987-07-02 1987-07-02 Encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16621987A JPS6410124A (en) 1987-07-02 1987-07-02 Encoder

Publications (1)

Publication Number Publication Date
JPS6410124A true JPS6410124A (en) 1989-01-13

Family

ID=15827319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16621987A Pending JPS6410124A (en) 1987-07-02 1987-07-02 Encoder

Country Status (1)

Country Link
JP (1) JPS6410124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013242531A (en) * 2012-05-22 2013-12-05 Samsung Display Co Ltd Display device, calibration method of display device, and display method of display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013242531A (en) * 2012-05-22 2013-12-05 Samsung Display Co Ltd Display device, calibration method of display device, and display method of display device

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