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US 6,648,466 B2Granted
Inkjet printer including fixed printheads and transfer roller
AssigneeHewlett-Packard Development Company, L.P.
InventorsRobert W. Beauchamp, Eric Joseph Johnson
Life of this patent
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Abstract
An inkjet printer includes a plurality of fixed printheads and a transfer roller. The transfer roller collects ink from the printheads and transfers the collected ink onto a print medium.
Claims19
A printer comprising:
- a plurality of printheads;
- a print medium path;
- and
- a transfer roller having a surface patterned with a plurality of wells for collecting ink from the plurality of printheads and transferring the ink to a transfer zone on the print medium path.
1 more element
A printer comprising:
- a plurality of printheads;
- a print medium path;
- a transfer roller for collecting ink from the plurality of printheads and transferring the ink to a transfer zone on the print medium path;
- and
- an assembly for performing retracing without print medium leading edge control.
2 more elements
A printer comprising:
- a transfer roller;
- a plurality of fixed printheads surrounding the transfer roller;
- and
- a pressure roller movable against the transfer roller, the transfer roller and the pressure roller defining a transfer nib when the pressure roller is urged against the transfer roller wherein an outer surface of the pressure roller is deformable.
1 more element
A printer comprising:
- a plurality of fixed printheads;
- a paper path having a transfer zone:
- first means for collecting ink from the printheads and transferring the collected ink to a portion of a print medium within the transfer zone;
- second means for urging the portion of the print medium against the first means during transfer of the ink;
- and
- means for retracing a print medium leading edge to a position proximate the transfer zone without controlling the leading edge.
3 more elements
A method of using a plurality of printheads to print on a print medium, the method comprising:
- advancing the print medium into a print zone;
- collecting ink from the printheads without making a print;
- and
- making a print on the print medium by transferring the collected ink onto the print medium at a transfer zone within the print zone while applying pressure to the print medium at the transfer zone.
1 more element
Dependencies are inferred from the claim text.