Drawdown machines
OwnerVazgen J. Houssianinventor
Life of this patent
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Abstract
An improved drawdown machine is disclosed in which an ink bead or coloring agent is evenly distributed over a receptor surface e.g. a sheet of paper by pulling the paper through a nip formed between a bed surface and a bar.
Claims15
Apparatus for coating a receptor sheet comprising:
- sheet support means;
- a coating bar arranged to rest on a portion of a sheet on top of the sheet support means to define a nip therebetween;
- a movable sheet clamp for releasably receiving the sheet;
- and
- actuation means for effecting movement of the sheet clamp to pull the sheet through the nip.
A drawdown machine for applying a coating to a receptor sheet, the machine comprising a narrow bed surface, a bar lying on the bed surface and defining a nip therebetween, a sheet clamp releasably receiving the sheet and means for reciprocating the sheet clamp to draw the sheet through the nip when moving in one direction and then to return the sheet clamp to its starting position.
Dependencies are inferred from the claim text.