Rotary press having a heating roller for drying

Printing – Antismut device – Drying with fluid or by heating

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Details

101487, B41F 2304

Patent

active

060793309

ABSTRACT:
A rotary press has a paper web supply apparatus, a printing apparatus, and a post-printing processing apparatus. The rotary press further includes at least one heating roller provided in a path along which a paper web carrying printed images runs from the printing apparatus to the post-printing processing apparatus, as well as at least one cooling roller provided downstream from the heating roller. The heating roller and the cooling roller are disposed such that the running paper web contacts each of the rollers over at least one-fourth of the circumference thereof. The heating roller is rotated at a circumferential speed different from a running speed of the paper web. The heating roller is a cylindrical body equipped with a built-in coil to which alternating current is supplied. The heating roller has cavities which are formed in a mutually communicating manner in the wall thereof and are filled with a thermal medium, and the outer surface of the heating roller is roughened. The rotary press can decrease installation space, the degree of complexity, manufacturing cost, and running cost of the drying apparatus.

REFERENCES:
patent: 4510864 (1985-04-01), Klemm
patent: 4729918 (1988-03-01), Nueberg et al.
patent: 5108531 (1992-04-01), Quadacci
patent: 5188028 (1993-02-01), Reichel
patent: 5203756 (1993-04-01), Taguchi
patent: 5218905 (1993-06-01), Bolte et al.
patent: 5553729 (1996-09-01), Kitano et al.
patent: 5619927 (1997-04-01), Winheim
patent: 5805969 (1998-09-01), Elsermans et al.
Japanese Utility Model Laying-open of Application 48-57104.
Japanese Patent Laying-open of Application 8-296142.
Japanese Patent Laying-open of Application 4-77255.
Rotary Offset Printing (Nippon Insatsu Shimbun-sha, 1st. Edition), pp. 11, 12, 35-41.

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