DRYING UNIT

PROBLEM TO BE SOLVED: To provide a drying unit capable of efficiently drying a sheet medium including an oil-based ink layer and a water-based varnish layer in a short time.SOLUTION: The drying unit 20 includes a first light source unit 30 irradiating a sheet P with light in a far-infrared region an...

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Bibliographic Details
Main Authors OKA TERUTO, MINAMIYAMA SEIJI, AOKI YOSHITOMO, WANAKA HIROSHI, AIZAWA TOSHIHIKO
Format Patent
LanguageEnglish
Published 02.02.2012
Subjects
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PRINTING MACHINES OR PRESSES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PROBLEM TO BE SOLVED: To provide a drying unit capable of efficiently drying a sheet medium including an oil-based ink layer and a water-based varnish layer in a short time.SOLUTION: The drying unit 20 includes a first light source unit 30 irradiating a sheet P with light in a far-infrared region and a second light source unit 40 irradiating the sheet P with light in a near-infrared region, in order from an upstream side of a conveyance route of the sheet P. The sheet P is entirely internally heated by far-infrared rays emitted by the first light source unit 30, and the water-based varnish layer located on a surface layer of the sheet P is dried by near-infrared rays emitted by the second light source unit 40. If the water-based varnish layer is dried first and cured, it is difficult to dry the oil-based ink layer of the inner layer. In accordance with the drying unit 20, because the oil-based ink layer is dried first, both oil-based ink layer and water-based varnish layer are satisfactorily dried.
Bibliography:Application Number: JP20100160508