Patent ID: 6045274
Filing Date: 2000-04-04
Classification: B41J,G05F,H02J

Abstract:
A power supply apparatus having a power source device for supplying electric power to an instrument connected to said power source device, the instrument being one that automatically performs a protective operation after a predetermined interval of time has passed since a most recent operation of the instrument and said power supply apparatus being separable from the instrument, said apparatus comprising:an electric terminal for outputting the electric power supplied from said power source device to the connected instrument through said terminal;switching means for switching a switching status in mechanical linkage with a mechanical movement of a cover portion of the instrument, wherein closing the cover portion of the instrument converts said switching means to a status for instructing said apparatus to suspend supplying the electric power to said terminal;timer means for measuring an elapsed time after said switching means is converted to said status for instructing said apparatus to suspend supplying the electric power to said terminal; andcontrol means for controlling the supply of electric power from said power source device to said terminal, wherein said control means suspends supplying of electric power to said terminal when a predetermined time is measured by said timer means,wherein said predetermined time is established so as to be longer than the interval of time after which the instrument automatically performs the protective operation and wherein the instrument can operate in an open status of the cover.