JPS5659373A - Photoelectric conversion device - Google Patents

Photoelectric conversion device

Info

Publication number
JPS5659373A
JPS5659373A JP13385379A JP13385379A JPS5659373A JP S5659373 A JPS5659373 A JP S5659373A JP 13385379 A JP13385379 A JP 13385379A JP 13385379 A JP13385379 A JP 13385379A JP S5659373 A JPS5659373 A JP S5659373A
Authority
JP
Japan
Prior art keywords
wave length
photoelectric conversion
ray
tinged
ocr
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
JP13385379A
Other languages
Japanese (ja)
Inventor
Mitsuo Oiso
Yoji Hoki
Kazuhisa Suetani
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13385379A priority Critical patent/JPS5659373A/en
Publication of JPS5659373A publication Critical patent/JPS5659373A/en
Pending legal-status Critical Current

Links

Landscapes

  • Solid State Image Pick-Up Elements (AREA)
  • Character Input (AREA)

Abstract

PURPOSE: To weaken a photoelectric conversion signal from the column on the business form and make strong a photoelectric conversion signal from the ball- point pen for OCR, by using a filter.
CONSTITUTION: As for the reflected ray from an image drawn by the ball-point pen for OCR, a black image is tinged with white since the reflection factor is high in case when wave length of the irradiation ray is long. Also, as for the column on the business form, since the reflection factor is low against the ray of specific wave length, having relatively short wave length, the reflected ray in case when said wave length has been irradiated is tinged with black. Therefore, the filters 3, 4 for obstructing the rays of long wave length and short wave length are provided on the front of the photoelectric conversion mechanisms 6, 5.
COPYRIGHT: (C)1981,JPO&Japio
JP13385379A 1979-10-17 1979-10-17 Photoelectric conversion device Pending JPS5659373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13385379A JPS5659373A (en) 1979-10-17 1979-10-17 Photoelectric conversion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13385379A JPS5659373A (en) 1979-10-17 1979-10-17 Photoelectric conversion device

Publications (1)

Publication Number Publication Date
JPS5659373A true JPS5659373A (en) 1981-05-22

Family

ID=15114554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13385379A Pending JPS5659373A (en) 1979-10-17 1979-10-17 Photoelectric conversion device

Country Status (1)

Country Link
JP (1) JPS5659373A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169609U (en) * 1981-04-20 1982-10-26
JPH01321588A (en) * 1988-06-24 1989-12-27 Fujitsu Ltd Laser engraved character reader for magnetic disk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169609U (en) * 1981-04-20 1982-10-26
JPH01321588A (en) * 1988-06-24 1989-12-27 Fujitsu Ltd Laser engraved character reader for magnetic disk

Similar Documents

Publication Publication Date Title
JPS569763A (en) Beam recording device
JPS5659373A (en) Photoelectric conversion device
JPS57132234A (en) Spatulate light pen
JPS52122038A (en) Fixed noise elimination of solid image sensor
JPS5230449A (en) Light ray scanner
JPS525543A (en) Optical scanning device
JPS5436193A (en) Photo electric converter and its manufacture
JPS5268307A (en) Lihgt scanner
JPS51131340A (en) Optical interference filter
JPS5378114A (en) External light shielding unit
JPS5242330A (en) Information input memory unit
JPS547364A (en) Ray type detecting method
JPS53104124A (en) Code reader
JPS522184A (en) Radioactive ray detector
JPS51143343A (en) Optical instrument
JPS5342523A (en) Optical information recording media and its reader
JPS5430029A (en) Automatic focal point dethctor
JPS5633770A (en) Optical character reading device
JPS5319835A (en) Recording device
JPS55161257A (en) Stray light preventing device in electric discharger
JPS52129537A (en) Optical system
JPS5543646A (en) Picture reading system
JPS5528171A (en) Optical information reader
JPS5430822A (en) Focus detector
JPS52135720A (en) Reader-printer