Abstract: In an electrographic printer or copier using an LED for exposing the photoconductor, an arrangement of two disconnectable flat conductors are provided which form part of the electrical connection between a current supply and an exposure system. A first flat conductor contains a first current carrying metal strip, at least one second current carrying metal strip which has at least sections thereof in parallel to the first metal strip, and at least one insulating strip which insulates the second metal strip from the first metal strip. The first flat conductor provides a connection with the second flat conductor which has the first metal strip protruding beyond the insulating strip. The second flat conductor has essentially the same geometrical structure as the first flat conductor at least at the connection point.

Abstract: A printer or copier has an optical character generator for reproducing raster image data in grey-scale displays. Integrated light sources in the form of LEDs arranged in arrays are aligned to form a print line. A control IC is provided for each LED array. Groups of the control ICs are formed in which information is shifted for the switch on time of all LEDs of a group starting with the first control IC to the next IC. The ICs are connected together by bonding. A ramp circuit is provided to prevent current surges when the LEDs are switched on. A flat unit that extends along the character generator is used to transmit information and power to the control ICs. Busbars ensure that power is provided to the LEDs.