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:
Aug. 28, 1990
Filed:
May. 06, 1988
Nobuo Ueda, Osaka, JP;
Hideaki Hirasawa, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A microfilm reader comprises a microfiche moving mechanism for sandwiching a microfiche film between an upper glass plate and a lower glass plate and moving the film in two-dimensional directions, and a projecting optical system for projecting images recorded on the film to a screen. The projecting optical system includes a projecting lens housed in a lens case placed on the upper glass plate of the microfiche moving mechanism. This lens case is raised away from the upper glass plate when the microfiche moving mechanism is in motion. The upper glass plate is raised only when the microfiche moving mechanism is in a home position for inserting and removing the microfiche film to/from a position between the upper and lower glass plates.