Address reading apparatus for mail article

专利名称：Address reading apparatus for mail article发明人：Tsutomu Sasage,Masahiko Noguchi申请号：US07/110114申请日：19871019公开号：US04886596A公开日：19891212

摘要：The invention maintains the focus of a reader in a postal sorting and

transporting system which is equipped to read an image of an address on either side of amail article. The address reading apparatus uses two address readers disposed onopposite sides of a transfer path over which the mail articles travel. An address-carryingsurface detector is disposed along the transfer path and upstream of the two addressreaders. Two floating roller pairs are provided at the inlet and the outlet of the addressreaders, to hold the mail article therebetween. A pressure roller driving mechanismresponds to an output signal delivered from the address- carrying surface detector forselectively fixing one roller of either roller pair at a predetermined distance from themail article's address carrying surface so that the distance between the address carryingsurface and the appropriate address reader is kept constant. This constant distance fixingcompensates for variations in the thickness of the mail article in order to maintain anaccurate focus.

申请人：NEC CORPORATION

代理机构：Laff, Whitesel, Conte & Saret

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