Method of and apparatus for reproducing recorded information
OwnerHiroshi Yamamotoinventor
Life of this patent
Estimating the term…
Abstract
A method of and an apparatus for reproducing information recorded on a thin sheet with no central hole for placing the sheet in position, in which a plurality of switches are provided, at least one of which can be closed if there is a sheet present on a turntable and the other of which can be closed if a lid is completely lowered. A pickup arm is provided with a reproducer stylus and can be moved to the starting point when the lid is raised, so that actuating both switch means can cause the motor circuit to be closed for driving the turntable for rotation, and reproduction can be repeated by operating the lid.
Claims8
An apparatus for reproducing information recorded on a nonapertured rectangular thin sheet, said apparatus comprising:
- a cabinet;
- a lid pivotally connected to one edge of said cabinet;
- a turntable positioned at an upper portion of said cabinet and including means for grasping the four corners of a sheet;
- a motor including an output shaft and mounted for movement toward and away from said turntable;
- guide member means for slidably guiding a sheet onto said turntable;
- a rod member provided centrally of said turntable and normally biased upwardly therethrough;
- first and second switch means connected in series with each other and said motor thus forming circuit means for actuating said motor only when both said switch means are closed;
- said first switch means being provided on an edge of said lid and actuable only when said lid is completely lowered to a closed position thereof;
- said second switch means being provided below said rod member and actuated by downward movement of said rod member only if a sheet is positioned on said turntable;
- a cylindrical member rotatably connected to the underside of said lid at a position opposite said rod member and comprising means for pressing said sheet toward said turntable and for thus moving said rod member downwardly;
- and
- a pickup arm including a reproducer stylus.
A method of reproducing information recorded on a nonapertured thin sheet, said method comprising:
- first placing a sheet on a turntable such that said sheet is inclined relative to said turntable and corners of said sheet are held by a peripheral inner wall groove of said turntable;
- lowering a pivotted lid to a closed position and contacting said sheet to move said sheet into a horizontal position on said turntable;
- moving a reproducer stylus to a reproduction starting point of said sheet when said lid is completely lowered;
- and
- closing a first switch means only if a sheet is present on said turntable;
- closing a second switch means when said lid is completely lowered;
- and
- starting said motor circuit only if both said first and second switch means are closed.
Dependencies are inferred from the claim text.