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:
Mar. 23, 1993
Filed:
Jul. 31, 1989
Shinobu Fukoka, Atsugi, JP;
Takeshi Kamada, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical reader includes a transport mechanism for transporting a document in a document transport direction. The transport mechanism includes a lower guide plate and an upper guide plate opposite to the lower guide plate so as to form a gap through which the document is transported. The lower guide plate has an opening window. A light source obliquely projects light along a projection optical axis onto the document through the opening window. A read element receives light reflected by the document and outputting an electrical signal corresponding to the received light. The read element has a read optical axis along which the light reflected by the document comes. The read optical axis and the projection optical axis intersect on the side of the upper guide plate outside of the gap.