(under subclass 67) Subject matter wherein the light flux given off by the lamp is controlled by varying the voltage applied to the lamp or wherein the time interval during which the lamp is on is variable by interrupting the electricity thereto, usually according to the light transmitting or reflecting quality of the original; or wherein a light switch is set forth to control the electricity to the lamp.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64+, for a copier which transfers images from individual documents to a film strip having light control which usually includes a light switch actuated by a document.
