Vacuum holddown

Details Vacuum holddown Vacuum holddown

2005-10-25

2005-10-25

Shah, Manish S. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Medium and processing means

C347S101000, C347S102000

Reexamination Certificate

active

06957887

ABSTRACT:
A vacuum holddown for a hard copy device includes a platen having plural vacuum zones arranged in a side-by-side array across the platen. Each vacuum zone has a closed end and an open end and is coupled to a vacuum source. Each vacuum zone defines a recess in the upper surface of the platen that is fluidly coupled to the vacuum source through a port. The back walls and side walls of each vacuum zone are coplanar with the upper surface of the platen. A step may be positioned in the vacuum zones to define an open vacuum zone having multiple depths.

REFERENCES:
patent: 6172741 (2001-01-01), Wotton et al.
patent: 6234472 (2001-05-01), Juan
patent: 6254090 (2001-07-01), Rhodes et al.
patent: 6270074 (2001-08-01), Rasmussen et al.

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