Vacuum drum with countersunk holes

Details Vacuum drum with countersunk holes Vacuum drum with countersunk holes

1997-11-24

2000-03-28

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347264, 347215, 346138, 1013891, B41J 1716

Patent

active

060438363

ABSTRACT:
The present invention is for a vacuum drum (300) with countersunk holes (334). In one embodiment, vacuum holes (306), countersunk vacuum holes (334), and blind countersunk vacuum holes (336) on an outer surface of the vacuum drum are connected by vacuum grooves to facilitate holding multiple sheets of media on the vacuum drum (300), which revolves at high speeds.

REFERENCES:
patent: 4437659 (1984-03-01), Caron et al.
patent: 4660825 (1987-04-01), Umezawa
patent: 5155535 (1992-10-01), Bermel et al.
patent: 5183252 (1993-02-01), Wolber et al.
patent: 5268708 (1993-12-01), Harshbarger et al.
patent: 5446477 (1995-08-01), Baek et al.
patent: 5486932 (1996-01-01), Leonard
patent: 5488906 (1996-02-01), Iron et al.

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