Vervielfältigungsgerät mit Blitzlampensteuerungsvorrichtung.

摘要

In a full-frame flash electrophotographic printing machine, an imaging system (16) is provided which incorporates a flash lamp (28) directly coupled to an ac line input via a control circuit (32) to enable document exposure. The imaging system also includes a lens (22) whose movement is synchronized with a moving photoreceptor (10) so that an exposure occurs registered at the same image area of the photoreceptor. The control circuit (32) may comprise a circuit (60) for detecting zero crossing points of the line voltage and for generating signals which are used to trigger the lamp into operation at some point during an 8 msec, half cycle of line operation. A further circuit (66) may be provided for controlling exposure levels to conform to detected density of the document being copied. In a second embodiment, the control circuitry (36) is used to couple the ac line into a flash fuser assembly (100) to fuse a transferred image on an output record medium (40A) (see Figures 12 and 13).