HYBRID OPTICAL HEAD FOR DIRECT ENGRAVING OF FLEXOGRAPHIC PRINTING PLATES
First Claim
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1. A system for engraving flexographic printing plates, comprising:
- a first group of one or more radiation sources each emitting radiation having substantially the same intensity;
a first one or more optical elements coupled to the first group of one or more radiation sources for imaging the radiation emitted from the first group of one or more radiation sources onto a flexographic printing plate;
a second group of one or more radiation sources each emitting radiation having substantially the same intensity; and
a second one or more optical elements coupled to the second group of one or more radiation sources for imaging the radiation emitted from the second group of one or more radiation sources onto the flexographic printing plate, wherein the intensity and spot size of the first group of one or more radiation sources is different from the intensity and spot size of the second group of one or more radiation sources, and wherein said first and second groups of radiation sources operate simultaneously.
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Abstract
An optical imaging head for direct engraving of flexographic printing plates, comprising: at least two groups of radiation sources, each group comprising at least one radiation source, wherein the radiation sources within each group emit radiation having the same intensity and spot size, different from the intensity and spot size of radiation sources in the other groups, said groups of radiation sources operating simultaneously.
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Citations
22 Claims
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1. A system for engraving flexographic printing plates, comprising:
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a first group of one or more radiation sources each emitting radiation having substantially the same intensity; a first one or more optical elements coupled to the first group of one or more radiation sources for imaging the radiation emitted from the first group of one or more radiation sources onto a flexographic printing plate; a second group of one or more radiation sources each emitting radiation having substantially the same intensity; and a second one or more optical elements coupled to the second group of one or more radiation sources for imaging the radiation emitted from the second group of one or more radiation sources onto the flexographic printing plate, wherein the intensity and spot size of the first group of one or more radiation sources is different from the intensity and spot size of the second group of one or more radiation sources, and wherein said first and second groups of radiation sources operate simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for engraving flexographic printing plates, comprising:
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emitting radiation having substantially the same intensity by each of a first group of one or more radiation sources; imaging the radiation emitted from the first group of one or more radiation sources onto a flexographic printing plate by a first one or more optical elements coupled to the first group of one or more radiation sources; emitting radiation having substantially the same intensity by each of a second group of one or more radiation sources; and imaging the radiation emitted from the second group of one or more radiation sources onto the flexographic printing plate by a second one or more optical elements coupled to the second group of one or more radiation sources, wherein the intensity and spot size of the first group of one or more radiation sources is different from the intensity and spot size of the second group of one or more radiation sources, and wherein said first and second groups of radiation sources operate simultaneously. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification