Hewlett-packard Development Company, L.P.

Hewlett-packard Indigo B.v.

Haggai Abbo

Elad Taig

Gilad Tzori

Martin Chauvin

Michel Assenheimer

Zohar Goldenstein

Craig Breen

Sharon Nagler

Avichay Mor-Yosef

Shai Druckman

Ami Shiff

Omry Flum

Yuri Baril

Avner Arnstein

The present invention provides a printing assembly which includes a printing drum such as an impression drum, a pair of eccentric bearings between and on which the drum is mounted for rotation, a pair of self aligning bearings on which the eccentric bearings are supported, and a pair of frameless motors directly connected to the eccentric bearings in order to effect the rotation thereof through closed loop feedback control, in order to facilitate the automatic and accurate control of pressure level and uniformity along the nip of a printing press.

Printing assembly

Detecting an issue in a digital printer that has an optical element positioned to direct a laser beam towards a photoconductor surface may include sending optical element position commands to move the optical element to compensate for inconsistent movements of a photoconductor drum and creating a record of the optical element position commands.

Issue detection in a digital printer

A method and system for maintaining a substantially uniform pressure between a pair of rollers is disclosed.

Method and system for maintaining substantially uniform pressure between rollers of a printer

A printing device for printing on a printable media. The printing device comprises a rotating component (), a gripper mechanically coupled to the rotating component () and configured for loading and unloading the printable media to and from the rotating component (), an actuating element () configured for actuating the gripper, the actuation resulting in a disturbance to the rotation of the rotating component (), and a compensating element () shaped such as to reduce the disturbance by applying a compensating mechanical force to the rotating component () during the rotation of the rotating component ().

Printing device and method including reduced torque disturbance of the rotating component of the printing device

A device for holding a photoreceptor sheet onto a drum of an electro-photography printing device comprises first and second holding surfaces that are configured to hold an edge of the photoreceptor sheet from opposite directions by pressing against the sheet in a substantially perpendicular direction with respect to the surface of the sheet, wherein at least the second holding surface is pre-loaded.

Device for holding a photoreceptor sheet

A gripper system for controlling the loading and unloading of sheets on a cylindrical sheet guide. The gripper system comprises one or more grippers, which are positioned at an outer edge of the cylindrical sheet guide. Each gripper is coupled to a cam follower. The gripper system further comprises a cam, which is configured for affecting the elevation of the gripper(s) by moving the cam follower(s), and a servomotor, which is adapted for steering the cam. A cam-gripper controller is provided for controlling the servomotor according to a current printing profile.

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Kyriat Ono, Israel

Haggai Abbo