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. 04, 1984
Filed:
Sep. 02, 1982
Tadashi Sato, Kokubunji, JP;
Haruo Tsunoi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An original reading device has an original table for supporting thereon an original with its surface to be read facing upward, a retention plate for retaining the original, and a scanning head movable along the retention plate in a minor scanning direction. The scanning head contains therein an optical system including a lens, and an image sensing element for scanning the surface to be read of the original in a major scanning direction. The retention plate is vertically movable in accordance with the thickness of the original. The scanning head is vertically movable to maintain the length of the optical path between the surface to be read and the lens constant even if the thickness of the original is large, and the scanning head is provided with a spacer which bears against the retention plate.