Heidelberger Druckmaschinen Ag

Thomas Rupp

Andreas Detmers

Lars Paulsen

Axel Gebhardt

Christian Meier

Martin Forrer

Eckhard Langenbach

Ingo Ringle

Wolfgang Theiss

An imaging apparatus for imaging on a recording medium is improved to permit the imaging power to be balanced between various groups of individual radiation sources with a low outlay and high accuracy. Two or more imaging heads that respectively include a multiplicity of individual radiation sources that can be electrically driven individually with light beams directed onto a radiation-sensitive layer of the recording medium. A drive moves the recording medium and the radiation sources relative to one another. A control device controls the power of the light beams of the radiation sources separately for each imaging head. A least one light guide is provided that guides a portion of the light beams emanating from the radiation sources to the receiver surface of a photoelectric sensor, which sensor is connected to the control device.

Apparatus for imaging on a recording medium

A compact device for imaging () a printing form (), including a number of light sources () as well as imaging optics () for producing a number of image spots () of the light sources () on the printing form (), the imaging optics () including at least one macro-optical system () of refractive optical components (), the imaging device having the feature that the optical path () from the light sources () to the image spots () passes through the macro-optics () twice. The installation-space saving imaging device () can be used in a printing unit () of a printing press ().

Compact device for imaging a printing form

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Heidelberg, Germany

Thomas Rupp