Printing – Special article machines – Bed and platen
Patent
1976-11-24
1978-02-07
Coven, Edward M.
Printing
Special article machines
Bed and platen
101 32, 34 4, 219405, B41F 1700
Patent
active
040720993
ABSTRACT:
Apparatus is disclosed for applying ultraviolet light reactive ink to several surfaces of egg cartons, and for rapidly drying the ink thereon by ultraviolet light so that the cartons can be immediately stacked and without subjecting the articles to heat damage during drying. A conveyor moves the unfolded egg cartons along a predetermined path at a selected predetermined rate of speed. Printing means apply ink to the cartons. Heat-emitting ultraviolet lamps dry the ink. Fluid motors move the lamps between a position close to the cartons and a position away from the cartons. A control responsive to the rate of speed of carton movement maintains the lamps in the close position to dry the ink when the cartons move at the predetermined rate of speed and move the lamps away from the cartons to continue the ink drying but to prevent heat damage when carton speed decreases. In one embodiment, a single drying unit is located downstream of several printing stations. In another embodiment, an additional drying unit is located between two printing stations. The drying unit includes a tiltable lamp housing having access doors and a safety deflector therewithin for protecting the operator if he reaches through the access doors under the lamps. The control is further responsive to movement of the housing and access doors to move the lamps away from the carton path so as to enable the deflector to be moved to block the radiation.
REFERENCES:
patent: 1947171 (1934-02-01), Prussing
patent: 2529704 (1950-11-01), Olsen
patent: 3733709 (1973-05-01), Bassemir
patent: 3735697 (1973-05-01), Provan
patent: 3826014 (1974-07-01), Helding
patent: 3829982 (1974-08-01), Pray et al.
patent: 3849063 (1974-11-01), Eichenlaub
patent: 3895574 (1975-07-01), Nyborg
patent: 3934500 (1976-01-01), Jackson
patent: 3935647 (1976-02-01), Aschberger
Condes Corporation
Coven Edward M.
Nilles James E.
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