Hewlett-packard Development Company, L.P.

Marco A Guzman

Ziv Gilan

Christopher Sean Tanner

David Sabo

M Derek Patton

A binary ink developer (BID) for a liquid electro-photography (LEP) printing device includes a sponge roller to absorb unused ink. The BID includes a squeezer roller to release the unused ink absorbed by the sponge roller for reuse. The squeezer roller releases the unused ink absorbed by the sponge roller by compressing the sponge roller. Compression of the sponge roller results in ink foam. The BID includes a mechanism having a wall, and a housing that together with the wall of the mechanism defines a passageway between the housing and the wall. The passageway is exposed externally to the BID. The BID includes one or more suction cavities defined within the wall of the mechanism through which the ink foam moves back from the passageway.

Liquid electro-photography printing device binary ink developer having suction cavities

A splash guard is configured to control the flow of excess liquid generated by an interaction between a first roller and a second roller by splitting the flow of the excess liquid into a first flow and a second flow.

Apparatus for containing splashes in an ink developer

In one implementation, an apparatus includes a foil that is adjacent to a portion of an ink developer electrode. The foil at least partially limits an accumulation of splashed ink along one or more portions of the ink developer electrode.

Ink developer foil

A replaceable developer roller apparatus is disclosed for a printing device. The apparatus includes a cylindrical developer roller having two opposed ends, and a drive assembly selectively and operatively engageable with one of the opposed ends of the developer roller. The drive assembly includes a shaft having two opposed regions; a gear rotationally fixed to one of the opposed regions of the shaft; and a drive member rotationally fixed to the other of the opposed regions of the shaft, and selectively, axially moveable between an engagement position and a disengagement position. A spindle assembly is engageable with the other of the opposed ends of the developer roller. The spindle assembly includes a spindle assembly shaft and an alignment member rotationally fixed to the spindle assembly shaft.

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San Diego, CA, United States of America

Marco A Guzman