Hewlett-packard Development Company, L.P.

Hewlett-packard Company

Jeffrey E Jones

Glenn W Gaarder

Rodney David Stramel

Samuel A Stodder

Michael Janczyk

An over-center mechanism includes a pivoting member, rotatable about a pivot point between first and second positions, a drive gear, having a first radius, fixedly attached to the pivoting member at the pivot point, a pinion gear, engaged with the drive gear, having a second radius, and an over-center tension spring, eccentrically attached between the drive gear and the pinion gear, to bias the pivoting member toward the first and second positions.

Over-center mechanism

The present invention provides ink-jet inks and methods for increasing slewing time of an ink-jet ink pen without significant decap. The composition can comprise an effective amount of a dye, an effective amount of an ink vehicle, and an effective amount of an anti-slewing decap agent comprising an alkyl aryl sulfonamide. In one embodiment, the anti-slewing decap agent consists essentially of the alkyl aryl sulfonamide. With regard to the method, the steps can including formulating the composition; loading the ink-jet ink in an ink-jet pen; and configuring the ink-jet pen to allow for increased slewing time between firing. Additionally, a system of printing high quality images with reduced slewing decap can comprise an ink-jet ink pen configured for firing non-image producing spits at from 3 and 6 second intervals, an ink-jet ink composition having an effective amount of an alkyl aryl sulfonamide present, and a substrate for accepting the ink-jet ink composition such that the high quality image is formed.

Ink-jet inks exhibiting increased slewing decap time

A pinch roller acts in combination with a drive roller to provide a nip through which sheets are passed in a sheet handling system. To reduce hand-off errors in the line feed accuracy of the sheet handling system, the pinch roller includes a compliant outer surface and soft undersurface volume. The flexibility of the outer surface allows the pinch roller to shift its holding force from the media to the pinch roller as the media leaves the nip between the rollers. This reduces the force seen by the media in the direction of the media travel, thus reducing the localized push on the back edge of the media. The soft undersurface volume is formed by a foam core.

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Oceanside, CA, United States of America

Jeffrey E Jones