Platemaking method and platemaking apparatus

A printing plate and modulator technology, which is applied in the field of plate making of printing plates and plate making devices of printing plates, can solve the problems of high power and long time of printing plates, etc.
CN1754694AInactive Publication Date: 2006-04-05DAINIPPON SCREEN MTG CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DAINIPPON SCREEN MTG CO LTD
Publication Date
2006-04-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a plate making method of a printing plate and the plate making device of a print plate. Engraving is conducted by a precise engraving process and a rough engraving process. The precise engraving process uses precise engraving beam of light with small beam diameter to irradiate the flexible photosensitive material at precise engraving pixel intervals. The engraving is conducted until the precise engraving beam of light reaches the maximum depth. The rough engraving process uses rough engraving beam with large beam diameter to irradiate the flexible photosensitive material at rough engraving pixel intervals which are larger than that of the precise engraving pixel intervals, and the engraving is conducted until the beam of light reaches the relief depth.
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Description

technical field

[0001] The present invention relates to a printing plate making method and a printing plate making apparatus for making a printing plate such as a letterpress printing plate such as a flexo plate or an intaglio printing plate such as an intaglio plate. Background technique

[0002] Conventionally, a laser engraving machine described in US Pat. No. 5,327,167, for example, is known as a plate making apparatus for such a printing plate. This laser engraving machine manufactures relief printing plates by engraving the surface of the recording material by scanning the recording material with a laser beam emitted from a laser light source, and has: a laser light source; a modulator for modulating the laser beam emitted from the laser light source (modulator); a recording drum that rotates with a recording material mounted on its outer periphery; a recording material mounted on the outer periphery of the recording drum that is configured to be movable in a direction...

Claims

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