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:
Apr. 21, 1987
Filed:
Aug. 21, 1984
Yukio Shibata, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
This disclosure depicts a feed device for a magnetic head applicable to an electronic still camera or a reproducer in an electronic camera system wherein a subject is pure-electronically still-photographed and recorded in a rotating magnetic disc, and the reproducing of an image is carried out by a television system or a printer. The feed device for a magnetic head utilizes a planetary gear reduction mechanism to obtain a high reduction ratio, whereby a head carriage carrying the magnetic head is finely fed. The planetary gear reduction mechanism comprises: a sun gear connected to a rotary driving source; a stationary internal gear wheel disposed concentrically with the sun gear therearound; a rotary internal gear wheel for the output disposed concentrically with the stationary internal gear wheel; at least one first planetary gear being in mesh with the stationary internal gear wheel as well as the sun gear; at least one second planetary gear being in mesh with the rotary internal gear wheel as well as the sun gear; and an arm member for rotatably supporting said first and second planetary gears so that the planetary gears can revolve respectively around the sun gear. The rotary internal gear wheel for the output is connected to the head carriage carrying the magnetic head through the rotation-linear movement converting mechanism and performs the fine feed of the magnetic head, e.g. by 100 .mu.m with high accuracy.