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JPS5412229A - Detection system for optical color mark - Google Patents

Detection system for optical color mark

Info

Publication number
JPS5412229A
JPS5412229A JP6508177A JP6508177A JPS5412229A JP S5412229 A JPS5412229 A JP S5412229A JP 6508177 A JP6508177 A JP 6508177A JP 6508177 A JP6508177 A JP 6508177A JP S5412229 A JPS5412229 A JP S5412229A
Authority
JP
Japan
Prior art keywords
detection system
color mark
optical color
mark
pencil
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
JP6508177A
Other languages
Japanese (ja)
Inventor
Joji Tajima
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6508177A priority Critical patent/JPS5412229A/en
Publication of JPS5412229A publication Critical patent/JPS5412229A/en
Pending legal-status Critical Current

Links

Landscapes

  • Character Input (AREA)

Abstract

PURPOSE: To make it possible to detect characters, etc., written by a pencil and various color ball-point pens by placing an adequate color filter on the light path of a lamp and photoelectric converter in a reader which reads a mark or character by detecting light reflected from a sheet of paper.
COPYRIGHT: (C)1979,JPO&Japio
JP6508177A 1977-06-01 1977-06-01 Detection system for optical color mark Pending JPS5412229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6508177A JPS5412229A (en) 1977-06-01 1977-06-01 Detection system for optical color mark

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6508177A JPS5412229A (en) 1977-06-01 1977-06-01 Detection system for optical color mark

Publications (1)

Publication Number Publication Date
JPS5412229A true JPS5412229A (en) 1979-01-29

Family

ID=13276629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6508177A Pending JPS5412229A (en) 1977-06-01 1977-06-01 Detection system for optical color mark

Country Status (1)

Country Link
JP (1) JPS5412229A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323919A (en) * 1979-08-09 1982-04-06 Canon Kabushiki Kaisha Optical scanner for reading data recorded in plural colors
JPS5924383A (en) * 1982-07-29 1984-02-08 Nippon Denso Co Ltd Optical information reader
JPS60156180A (en) * 1984-01-25 1985-08-16 S R D Kk Bar code reader
JPS61100073A (en) * 1984-10-23 1986-05-19 Hitachi Ltd Original reading optical device
US4818847A (en) * 1982-07-29 1989-04-04 Nippondenso Co., Ltd. Apparatus for optically reading printed information

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323919A (en) * 1979-08-09 1982-04-06 Canon Kabushiki Kaisha Optical scanner for reading data recorded in plural colors
JPS5924383A (en) * 1982-07-29 1984-02-08 Nippon Denso Co Ltd Optical information reader
JPS6217270B2 (en) * 1982-07-29 1987-04-16 Nippon Denso Co
US4818847A (en) * 1982-07-29 1989-04-04 Nippondenso Co., Ltd. Apparatus for optically reading printed information
JPS60156180A (en) * 1984-01-25 1985-08-16 S R D Kk Bar code reader
JPS61100073A (en) * 1984-10-23 1986-05-19 Hitachi Ltd Original reading optical device
JPH0626417B2 (en) * 1984-10-23 1994-04-06 株式会社日立製作所 Original scanning optical device

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