JPS5528171A - Optical information reader - Google Patents

Optical information reader

Info

Publication number
JPS5528171A
JPS5528171A JP10102478A JP10102478A JPS5528171A JP S5528171 A JPS5528171 A JP S5528171A JP 10102478 A JP10102478 A JP 10102478A JP 10102478 A JP10102478 A JP 10102478A JP S5528171 A JPS5528171 A JP S5528171A
Authority
JP
Japan
Prior art keywords
sheet
light
black
filter
output
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.)
Granted
Application number
JP10102478A
Other languages
Japanese (ja)
Other versions
JPS6244308B2 (en
Inventor
Hiroyuki Kimura
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 JP10102478A priority Critical patent/JPS5528171A/en
Publication of JPS5528171A publication Critical patent/JPS5528171A/en
Publication of JPS6244308B2 publication Critical patent/JPS6244308B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Character Input (AREA)

Abstract

PURPOSE: To obtain the output of high contrast, by reading in the in formation recorded on the specific information recording sheet with specific black ball point pen after photo electric conversion through the combination of the tungsten lamp and CCD.
CONSTITUTION: In reading in the information on the sheet 10 radiating light from the tungsten lamp 11 on it and striking the reflected light on the CCD image sensor 13 via the image forming lens 11, the plate 23 providing the heat absorption filter 21 and the neutral density filter 22 between the sheet 10 and the lens 11 is located movably. Further, when the heat absorption filter 21 is located on the light paht, the information recorded on the sheet 10 taking the clor of red or the like as dropout color in a black ball point pen or black pencil is read in, and also the read- in of the information recorded in a black pencil on the sheet 10 taking the color other than red or the like as the dropout color is enabled on the filter 22 located on the light path, to output the output signal of high contrast.
COPYRIGHT: (C)1980,JPO&Japio
JP10102478A 1978-08-19 1978-08-19 Optical information reader Granted JPS5528171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10102478A JPS5528171A (en) 1978-08-19 1978-08-19 Optical information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10102478A JPS5528171A (en) 1978-08-19 1978-08-19 Optical information reader

Publications (2)

Publication Number Publication Date
JPS5528171A true JPS5528171A (en) 1980-02-28
JPS6244308B2 JPS6244308B2 (en) 1987-09-19

Family

ID=14289620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10102478A Granted JPS5528171A (en) 1978-08-19 1978-08-19 Optical information reader

Country Status (1)

Country Link
JP (1) JPS5528171A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7090056B2 (en) 2019-09-06 2022-06-23 株式会社フジクラ Optical fiber, laser generator, laser processing device, and method for manufacturing optical fiber

Also Published As

Publication number Publication date
JPS6244308B2 (en) 1987-09-19

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