JPS61112289A - Bar code reader - Google Patents

Bar code reader

Info

Publication number
JPS61112289A
JPS61112289A JP59234362A JP23436284A JPS61112289A JP S61112289 A JPS61112289 A JP S61112289A JP 59234362 A JP59234362 A JP 59234362A JP 23436284 A JP23436284 A JP 23436284A JP S61112289 A JPS61112289 A JP S61112289A
Authority
JP
Japan
Prior art keywords
spot
bar code
set
deterioration
light beam
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
JP59234362A
Inventor
Nobuo Kanai
Original Assignee
Minolta Camera 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 Minolta Camera Co Ltd filed Critical Minolta Camera Co Ltd
Priority to JP59234362A priority Critical patent/JPS61112289A/en
Publication of JPS61112289A publication Critical patent/JPS61112289A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To increase the area of irradiation to obtain a sufficient quantity of irradiating light and also to avoid the deterioration of the image resolution even though the scanning direction has more inclination than the orthogonal position to the bars of a bar code, by forming an irradiating spot of a light beam into a diamond shape which is long in the rectangular direction.
CONSTITUTION: The bar B of a bar code is scanned by shifting an irradiated spot P of a light beam toward an arrow head. A state where an adjacent bar code never gets inside the spot P is always secured even in case the scanning direction is tilted by θ, where the vertical angle and the length of a shorter diagonal line of a diamond shape of the spot P are set at 2θ and (b) respectively. As a result, the image resolution has no deterioration. The angle θ is set at about ≥10° and preferably in a range of 20W40°. Furthermore it is preferably set at the minimum value 0.24mm of less of the bar code for the width of the spot P (also available enough with about 0.3mm).
COPYRIGHT: (C)1986,JPO&Japio
JP59234362A 1984-11-06 1984-11-06 Bar code reader Pending JPS61112289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59234362A JPS61112289A (en) 1984-11-06 1984-11-06 Bar code reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59234362A JPS61112289A (en) 1984-11-06 1984-11-06 Bar code reader

Publications (1)

Publication Number Publication Date
JPS61112289A true JPS61112289A (en) 1986-05-30

Family

ID=16969813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59234362A Pending JPS61112289A (en) 1984-11-06 1984-11-06 Bar code reader

Country Status (1)

Country Link
JP (1) JPS61112289A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63170613A (en) * 1986-12-22 1988-07-14 Symbol Technologies Inc Scan pattern generator for bar code symbol reader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63170613A (en) * 1986-12-22 1988-07-14 Symbol Technologies Inc Scan pattern generator for bar code symbol reader
JPH0565851B2 (en) * 1986-12-22 1993-09-20 Symbol Technologies Inc

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