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.

Date of Patent:
Oct. 29, 1985

Filed:

May. 10, 1983
Applicant:
Inventors:

Yukio Sawano, Tokyo, JP;

Masaru Ono, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
353 / ;
Abstract

A microfiche reader is provided with pulse motors which move a microfiche card in X and Y direction so as to position a required frame image on the microfiche card in an optical projection path. Using the symbol AF for the maximum number of frames recordable on the microfiche card, the symbol AS for the maximum number of pulse signals required to move the microfiche card from the datum position to the limit position, and the symbol PF for the location number of a required frame, the address number NS of a required frame can be calculated according to the equation


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