Active vacuum roller and method for advancing media
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid Claramunt, Xavier Gros, Abel Marron
Life of this patent
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Abstract
A media advancing device for a hardcopy apparatus includes at least one roller having an outer surface and being rotatable for advancing media, and a negative pressure mechanism. The outer surface further comprises a plurality of openings and a contact region for engaging the media, wherein the negative pressure mechanism is capable of creating negative pressure through at least a portion of the openings in the contact region.
Claims25
A media advancing device for a hardcopy apparatus comprising:
- at least one roller having an outer surface and being rotatable for advancing media, said outer surface comprising a plurality of openings and a contact region for engaging said media;
- and
- a negative pressure mechanism for creating negative pressure through at least a portion of said openings.
A media advancing device for a hardcopy apparatus comprising:
- at least one roller having an outer surface with a contact region for engaging media and rotatable for advancing said media;
- and
- a negative pressure mechanism for creating negative pressure that is radial to at least a portion of said contact region.
A method of advancing a media in a hardcopy apparatus comprising:
- advancing a media to contact the contact region on a roller having a plurality of openings;
- generating a negative pressure distribution between said media and said contact region wherein said negative pressure is through at least a portion of said openings in said contact region;
- further advancing said media by rotating said roller.
Dependencies are inferred from the claim text.