Printing – Processes – With heating or cooling
Patent
1993-01-21
1994-05-17
Burr, Edgar S.
Printing
Processes
With heating or cooling
101 35, B41L 3514
Patent
active
053118162
ABSTRACT:
A method of applying printing ink to cylindrical objects includes coating the external surfaces of cylindrical objects with migration-preventing plastic material which has an affinity for ink, and advancing the coated objects continuously, in series, one after the other, through an ink application zone wherein printing inks are transferred from a flexible carrier onto the coated surfaces of the objects. The ink sublimes in the heat, and the carrier is under tension during contact with selected portions of coated surfaces of the cylindrical objects which roll along the carrier during passage through an ink application zone. At least the carrier is heated above the sublimation temperature of the printing ink, and a temperature gradient is established in the plastic coats from the inside to the outside prior to, or not later than upon, entry of objects into the ink application zone. To this end, the ink application zone immediately adjoints a production line for the objects. The objects in the production line must be heated to an elevated temperature anyway for the purpose of producing and applying the plastic coats.
REFERENCES:
patent: 3469670 (1969-09-01), Cartwright
patent: 3766851 (1973-10-01), Sirvet et al.
patent: 4491613 (1985-01-01), Hahn
patent: 4681034 (1987-07-01), Schulzen et al.
Burr Edgar S.
Yan Ren
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