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:
Sep. 12, 1995
Filed:
Jun. 17, 1994
Toshiya Sato, Hachioji, JP;
Naoki Otomo, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
An image forming apparatus has an optical device for image magnification change. The apparatus is provided with a fixed platen on which a document is placed, four reflecting mirrors and an exposure lamp by which the document is exposed and scanned, and a lens unit including a fixed-focus lens by which an image of the document is formed on an image carrier. An imagewise light emitted from a document is reflected by the first, second and third reflecting mirrors and is transmitted through the fixed-focus lens. The reflected light is projected into the image carrier by way of the fourth reflecting mirror at which the light transmitted by the fixed-focus lens is reflected. The lens unit accommodates the fixed-focus lens and is movable in the same moving direction as the first, second and third reflecting mirrors at the time of an image magnification change operation. A lens cam member is mounted on the lens unit. The lens cam member has a first cam surface for enlargement and a second cam surface for reduction on at least one side thereof. An operation member has a first operation member which carries the cam surface for enlargement operations, and a second operation member which carries the cam surface for reduction operations. An interlock member interlocks with the fourth reflecting mirror so that a moving amount of the first operation member when engaged with the first and second cam surfaces, causes a movement of the fourth reflecting mirror based on the movement amount of said operation member.