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Compact device for printing-plate imaging

A technology of imaging device and printing device, applied in the direction of exposure device, printing plate preparation, printing, etc.

Inactive Publication Date: 2004-01-28
HEIDELBERGER DRUCKMASHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the projection optics on the printing press or on the printing plate exposure unit are subject to shocks or vibrations, so that the optical structures known from the prior art cannot generally be easily transferred to the printing plate exposure unit or in the printing unit of a printing press

Method used

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  • Compact device for printing-plate imaging
  • Compact device for printing-plate imaging
  • Compact device for printing-plate imaging

Examples

Experimental program
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Embodiment Construction

[0032] FIG. 1 shows a view of a preferred embodiment of the projection optics of a printing plate imaging device according to the invention. The projection optics 18 comprises along its beam path 22 a micro-optics 34 starting from a number of light sources 14 - in a preferred embodiment individually controllable diode laser bars (IAB) - a Parrot prism ( Porroprisma) 48, a macro optics assembly 20, an objective lens, which causes a 1:1 image, and a correction optics assembly 50. Projection optics 18 produce a number of image points 16 in the number of light sources 14 . The upper left of Figure 1 indicates the millimeter scale bar used for quantification.

[0033] The beam diameter can be influenced independently of each other in two mutually orthogonal directions perpendicular to the direction of propagation (optical axis) by means of the micro-optics assembly 34 . It can realize the adaptation of the size of the image point to be imaged. FIG. 2 illustrates the micro-optics...

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Abstract

A compact device for imaging (10) a printing form (12), including a number of light sources (14) as well as imaging optics (18) for producing a number of image spots (16) of the light sources (14) on the printing form (12), the imaging optics (18) including at least one macro-optical system (20) of refractive optical components (32, 56, 58; 60, 62, 64), the imaging device having the feature that the optical path (22) from the light sources (14) to the image spots (16) passes through the macro-optics (20) twice. The installation-space saving imaging device (10) can be used in a printing unit (88) of a printing press (90).

Description

technical field [0001] The invention relates to an imaging device for a printing plate, having a certain number of light sources and a projection optics assembly for generating image (image) points of the certain number of light sources on the printing plate, wherein the projection optics assembly comprises at least one Macro optics components composed of refractive optics. Background technique [0002] In order to form the structure of a printing mold, especially a printing plate, the existing surface of the printing plate is usually partially exposed to electromagnetic waves in its non-structured state, such as the ink-receiving state, on its ink-receiving and ink-repelling regions. The action of radiation, especially heat or light of different wavelengths, in order to produce another state, such as a state of repelling ink, at the affected position. For purposeful, precise and rapid exposure of the printing plate, a certain number of individually controllable light sourc...

Claims

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Application Information

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IPC IPC(8): B41C1/00G02B13/24G03F7/20G03F9/02
CPCG03F7/2057G02B13/24G03F7/2053G03F7/2055
Inventor 马丁·福雷尔阿克塞尔·格布哈特埃克哈德·朗根巴赫拉尔斯·保尔森托马斯·鲁普
Owner HEIDELBERGER DRUCKMASHINEN AG