Patent ID: 6121995
Filing Date: 2000-09-19
Classification: B41J

Abstract:
Electro-optical character generator for illuminating a surface of a photoconductor, comprising:a heat collector having a bearer surface facing the photoconductor;a multiplicity of light-emitting elements arranged in a row for illumination of the surface of the photoconductor, said light-emitting elements being connected in heat-conductive fashion with the heat collector;said heat collector being fashioned with a hollow space running in a direction of the row;a liquid filled in said hollow space, said liquid having a quotient of supplied quantity of heat and change of temperature per volume unit greater than or equal to 2.5 kJ/dm.sup.3 K;a cooling structure connected with the heat collector for giving off a quantity of heat collected by the heat collector to the environment; andthe heat collector which forms the hollow space being fashioned by a closed thin-walled hollow profile running in the direction of the row, said hollow space being closed at two ends of said hollow space, said closed thin-walled hollow profile being of an elongated shape extending in a direction of the row and shaped to resist bending so as to maintain said light emitting elements in respective predetermined printing positions relative to one another.