The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1989
Filed:
Oct. 19, 1987
Tsutomu Sasage, Tokyo, JP;
Masahiko Noguchi, Tokyo, JP;
NEC Corporation, , JP;
Abstract
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 a mail article. The address reading apparatus uses two address readers disposed on opposite sides of a transfer path over which the mail articles travel. An address-carrying surface detector is disposed along the transfer path and upstream of the two address readers. Two floating roller pairs are provided at the inlet and the outlet of the address readers, to hold the mail article therebetween. A pressure roller driving mechanism responds to an output signal delivered from the address-carrying surface detector for selectively fixing one roller of either roller pair at a predetermined distance from the mail article's address carrying surface so that the distance between the address carrying surface and the appropriate address reader is kept constant. This constant distance fixing compensates for variations in the thickness of the mail article in order to maintain an accurate focus.