Bar-code reader with reading zone indicator
First Claim
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1. An overhead bar code reader for reading a bar code to an article comprising:
- a scanning unit which comprises;
a vertical support with a path along which the article is to be moved being defined on one side thereof;
scanning means supported on said support above said path, for emitting a scanning light beam to optically scan the bar code toward said path and deflecting the scanning light beam along a predetermined scanning pattern; and
detecting means for detecting light reflected by the bar code which is optically scanned by the scanning light beam while the article is being moved along said path; and
indicating means, mounted on said scanning unit, for indicating a zone through which the article is to be moved along said path, said indicating means being positioned for possible contact with the article, said indicating means being flexible along said path so that when said indicating means is hit by the article, the indicating means is flexed by the article, and thereafter the indicating means is restored to the original position.
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Abstract
A bar-code reader for reading bar codes on articles or commodities in supermarkets or retail stores has a scanning unit mounted on a vertically movable support post assembly and including a scanning system which emits a scanning light beam and detects light reflected from a bar code. The bar-code reader includes various indicating members, such as an indicator rod, an indicator ring, an arrow mark, a pattern mark, and a colored sheet, for indicating to the operator a direction, a position, and an area or zone in which to pass an article with a bar code in order for the bar code to be successully read by the scanning system.
136 Citations
26 Claims
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1. An overhead bar code reader for reading a bar code to an article comprising:
a scanning unit which comprises; a vertical support with a path along which the article is to be moved being defined on one side thereof; scanning means supported on said support above said path, for emitting a scanning light beam to optically scan the bar code toward said path and deflecting the scanning light beam along a predetermined scanning pattern; and detecting means for detecting light reflected by the bar code which is optically scanned by the scanning light beam while the article is being moved along said path; and indicating means, mounted on said scanning unit, for indicating a zone through which the article is to be moved along said path, said indicating means being positioned for possible contact with the article, said indicating means being flexible along said path so that when said indicating means is hit by the article, the indicating means is flexed by the article, and thereafter the indicating means is restored to the original position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An overhead bar-code reader for reading a bar code attached to an article, comprising:
a scanning unit which comprises; a vertical support with a path along which the article is to be moved being defined on one side thereof; scanning means supported on said support above said path, for emitting a scanning light beam to optically scan the bar code toward said path and deflecting the scanning light beam along a predetermined scanning pattern; and detecting means for detecting light reflected by the bar code which is optically scanned by the scanning light beam while the article is being moved along said path; and ring-shaped indicating means, mounted on said scanning unit, for indicating a zone through which the article is to be moved along said path, said ring-shaped indicating means being positioned for possible contact with the article. - View Dependent Claims (22, 23, 24, 25, 26)
Specification