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US 2002/0053293 A1Published application
Printing machine with improved vacuum transfer
AssigneeWard, Inc.
InventorsMichael Elkis, Mark R. Donovan
Life of this patent
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Abstract
A multistage printing machine is disclosed with a vacuum conveyor between stages, and in which supplemental air is provided adjacent at least one printing cylinder.
Claims9
A printing machine comprising at least one printing stage including a printing cylinder and an adjacent stage, and a transfer section between said first and second stages comprising:
- (a) at least one exhaust blower for exhausting air from said printing machine;
- (b) a horizontally extending plate for creating a pressure differential above and below said plate;
- and
- (c) duct means having one end extending into the area adjacent said printing cylinder for supplying supplemental air at a negative pressure adjacent said printing cylinder.
1 more element
A printing machine including at least one printing cylinder for printing on individual sheets of material passing through said printing machine comprising:
- (a) at least one conveyor means;
- (b) plate means extending horizontally through said machine;
- (c) exhaust blower means for reducing the pressure on one side of said plate means to a negative pressure;
- and
- (d) duct means for introducing supplemental air at negative pressure to the other side of said plate means.
2 more elements
Dependencies are inferred from the claim text.