Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to attribute – absence or presence of work
Patent
1998-01-26
2000-08-22
Edwards, Laura
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to attribute, absence or presence of work
118679, 118315, 118323, 1014161, 101419, 1014242, B05C 500
Patent
active
061066230
ABSTRACT:
In order to prevent a coating liquid from scattering outside the surface of a printed sheet, an on-demand coating head having plural jet sections is arranged along a direction parallel to the left and right edges of the printed medium, and jets only liquid droplets along a predetermined direction by vibration of a piezoelectric vibrator plate and a coating area with a width extending along a direction parallel to the edges of the printed medium. That is, the head is in a reciprocating manner moved on the printed medium along a direction perpendicular to a direction of arrangement of the jet sections, and the head is in a relative manner moved on the printed medium along a direction perpendicular to the above moving direction by a secondary coating scanning control circuit. Edge position signals are produced which respectively indicate an edge position of an effective image in the primary coating scanning direction of the printed medium, and an edge position of the printed medium and jet of liquid droplets from the on-demand control coating head and a reciprocal movement thereof are controlled based on the edge position signals.
REFERENCES:
patent: 3257226 (1966-06-01), Thwaites
patent: 3927226 (1975-12-01), Kadona et al.
patent: 4724025 (1988-02-01), Nishikawa
patent: 4807528 (1989-02-01), Schmoeger et al.
patent: 5324359 (1994-06-01), Cleveland et al.
patent: 5460653 (1995-10-01), Otani et al.
patent: 5518179 (1996-05-01), Humberstone
Edwards Laura
Olympus Optical Co,. Ltd.
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