Hewlett-packard Development Company, L.p.

Stuart Douglas Spencer

Robert M Yraceburu

Steven P Downing

Steve Orrin Rasmussen

Dan Arquilevich

Vance M Stephens

Jason S Belbey

Louis C Barinaga

Ranjit Bhaskar

Ernesto Villalobos

Angel Astorgano-Ballesteros

Praveen Boppana

Zhi Dan Zou

An example device includes an imaging portion, an audio portion and at least one acoustic isolation feature. The audio portion is integrally coupled to the imaging portion. The audio portion is to provide an audio output. The at least one acoustic isolation feature is to facilitate acoustic separation of the imaging portion and the audio portion.

Imaging device with audio portion

In one example in accordance with the present disclosure, a printing system is described. The printing system includes a media sensor to detect a presence of media at a particular point within the printing system. A stepper motor moves media through the printing system. A controller 1) monitors, for at least one pass of the media, a number of steps of the stepper motor to pass the media between the media sensor and a print position, 2) stores the number of steps of the stepper motor in a memory device, and 3) adjusts operation of subsequent passes of the media based on stored number of steps. A memory device of the printing system stores the number of steps of the stepper motor, for at least one pass of the media.

Stepper motor-based print adjustments

Printer

Various embodiments and methods relating to a drum having a polymer layer with channels on a metal cylinder are disclosed.

Drum having a polymer layer with channels on a metal cylinder

A bearing mount of a rotatable printer drum having a rotational axis includes a main drum bearing, rotationally supporting the drum and having an outer bearing race, and at least two secondary roller bearings, angularly spaced from each other. The secondary roller bearings are positioned to rollably support the outer bearing race and allow lateral translation of the main bearing.

Printer drum bearing mount

In an inkjet printing apparatus an inkjet printhead has a plurality of inkjet nozzles which eject ink onto media located within a print-zone. A drive shaft is located upstream of the printhead and is incrementally rotated to advance the media. The drive shaft has a longitudinal axis, a first radius over a central length and a second radius less than the first radius at a first recess and a second recess, each said recess being peripheral to the central length. A plurality of pinch devices stabilize the media against the drive shaft. A first guide is aligned with the first recess and is spaced from an axis of the drive shaft by a first distance which is less than the first radius. A second guide is aligned with the second recess and is spaced from the axis by a second distance less than the first radius.

Controlling media curl in print-zone

In an inkjet printing apparatus an inkjet printhead ejects ink into a print-zone. A drive shaft, located upstream of the printhead, has a longitudinal axis, a first radius over a central length, and a second radius less than the first radius at a first recess and a second recess. Each recess is peripheral to the central length. A plurality of pinch devices stabilize the media against the drive shaft. A first guide and a second guide, spaced from the longitudinal axis, are aligned with and extend into the first recess and second recess.

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Vancouver, WA, United States of America

Stuart Douglas Spencer