Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 18, 2008
Patent Application Number
11041970
Date Filed
January 26, 2005
Patent Primary Examiner
Patent abstract
A drying device, which dries a photosensitive layer of a photosensitive planographic printing plate using infrared rays, includes an infrared emitting device and a filter that is arranged between the photosensitive planographic printing plate conveyed through the drying device and the infrared emitting device and that blocks a predetermined range of wavelength. More specifically, the filter is arranged between a web that is conveyed through the drying device and a mid-infrared radiator, so as to block 30% or more of wavelengths of 1 μm or less. As a result, fogging on a photosensitive coating layer can be prevented, and high heating efficiency can be achieved.
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