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JPS5593002A - Measuring instrument for bar width of bar code - Google Patents

Measuring instrument for bar width of bar code

Info

Publication number
JPS5593002A
JPS5593002A JP10979A JP10979A JPS5593002A JP S5593002 A JPS5593002 A JP S5593002A JP 10979 A JP10979 A JP 10979A JP 10979 A JP10979 A JP 10979A JP S5593002 A JPS5593002 A JP S5593002A
Authority
JP
Japan
Prior art keywords
bar
scan
speed
constant
detecting method
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
JP10979A
Other languages
Japanese (ja)
Inventor
Tsutomu Koike
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.)
Nippon Electric Industry Co Ltd
Original Assignee
Nippon Electric Industry 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 Nippon Electric Industry Co Ltd filed Critical Nippon Electric Industry Co Ltd
Priority to JP10979A priority Critical patent/JPS5593002A/en
Publication of JPS5593002A publication Critical patent/JPS5593002A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE: To measure bar width without being influenced by elapse variation in scanning speed, etc., by multiplying a ratio of the time needed to scan a constant distance set in a scanning area of bar codes to that needed to scan on one bar of bar codes by the constant distance.
CONSTITUTION: A spot beam from light source 1 is vibrated by scanning mechanism 2 of a rotary reflex mirror at a constant speed to scan bar codes 3 arranged in a fixed scanning area crossing the bar direction at right angles, and this light is converted into an electric signal by photoelectric converting element 5 through focusing lens system 4. Processing and control 22 and exercised by a reference size detecting method of photoelectric converting element 6, etc., white-bar width size detecting method of AND circuit 14, etc., and black-bar width size detecting method of inverter 16, etc. As far as the speed of a scan of distance L between two photoelectric converting elements is constant, distance L and respective bars of bar codes are scanned at the same speed even if the scan speed changes at every time of measurement, so that no measurement error will be generated.
COPYRIGHT: (C)1980,JPO&Japio
JP10979A 1979-01-06 1979-01-06 Measuring instrument for bar width of bar code Pending JPS5593002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10979A JPS5593002A (en) 1979-01-06 1979-01-06 Measuring instrument for bar width of bar code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10979A JPS5593002A (en) 1979-01-06 1979-01-06 Measuring instrument for bar width of bar code

Publications (1)

Publication Number Publication Date
JPS5593002A true JPS5593002A (en) 1980-07-15

Family

ID=11464899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10979A Pending JPS5593002A (en) 1979-01-06 1979-01-06 Measuring instrument for bar width of bar code

Country Status (1)

Country Link
JP (1) JPS5593002A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553843A (en) * 1981-08-03 1985-11-19 Micro Component Technology, Inc. Apparatus for determining the alignment of leads on a body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553843A (en) * 1981-08-03 1985-11-19 Micro Component Technology, Inc. Apparatus for determining the alignment of leads on a body

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