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Automatic package label scanner

  • US 4,939,355 A
  • Filed: 01/22/1988
  • Issued: 07/03/1990
  • Est. Priority Date: 01/22/1988
  • Status: Expired due to Term
First Claim
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1. An automatic scanner for automatically scanning bar code labels of selected items substantially without an attendant, comprising:

  • item conveyor means for automatically moving items through an item path including a scan region,bar code laser scanner means for scanning with one or more laser beams a volume of space in which an item bar code label might be located, including means for scanning for the label on substantially all surfaces of the item,item gate means for determining the presence of an item on the product conveyor means as the item reaches a preselected point in the item scan path and for determining whether the item has exited the scan region at the time a succeeding item approaches the scan region, and for inhibiting the progress of the succeeding item until the first item has exited the scan region and then enabling the succeeding item to continue its movement into the scan region, anddecoding means for receiving signals from the scanning of the bar code labels and for compiling data relating to the items whose bar codes have been read and for preparing a tabulation of said items.

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