Hewlett-packard Development Company, L.p.

Jon Johnson

Douglas Harriman

Jeetendra Kumar

Robert Paul Callaway

Nataraj Kumar Gobbak

Victor Bruhn

Robert D Davis

Gary L Miller

Angela Chen Krauskopf

Beverly Loh

Hernan Ildefonso Gutierrez-Vazquez

Ed Tucker

Dave Bettineski

Jeanette M Coffren

This invention relates to a media multi-feed rejection apparatus, comprising: a plurality of feed rollers; a feed roller driving means operatively connected to one of the plurality of feed rollers; a clutch means operatively connected to the other of the plurality of feed rollers; and a single channel encoder means operatively connected to the clutch means to measure a rotation of the other of the plurality of feed rollers.

Media multi-feed rejection process with an encoded counter-rotating roller

A printer having an internal electrical power supply is disclosed herein. A method for controlling power consumption in the printer includes receiving an image to be printed, calculating an estimated temperature of the printer, and controlling a speed of the printer to control the power consumption to keep a temperature of the printer below a predetermined maximum temperature in response to the estimated temperature.

Printer and method for controlling power consumption thereof

A method for monitoring subsystem power includes, with a power control system of an electronic device, receiving energy usage data from one of a plurality of subsystems within the electronic device, with the power control system, maintaining energy usage data for the plurality of subsystems within the electronic device, and with the power control system, providing integrated energy usage data to one of the plurality of subsystems.

Monitoring subsystem power

A first position of a media is determined with respect to a surface. The surface is advanced and a second position of the media is determined with respect to the surface. The relative speed between the surface and a linear speed feed of the media is altered based on the first and second positions.

Feeder speed

This invention relates to an apparatus for determining a media feature, comprising: a plurality of light filters such that the filters include a media measurement aperture and a calibration aperture and wherein the filters are spaced a predetermined distance apart to allow media to be introduced between the filters; a light source located substantially adjacent to one of the filters; and a light detector located substantially adjacent to another of the filters.

Determining a media feature using a photovoltaic cell and an electroluminescent light panel

A device and method for assisting a user to clear a media jam in a printing device that announces pages, picks media responsively to the announced pages and images the picked media using a media transport path, that: detects a media jam at a given location along the media transport path; halts printing device components upstream from the given location in the media path while continuing to image picked media downstream from the given location in the media transport path; and, prompts the user to clear the detected media jam from the given location after all downstream media has been imaged.

Printing device and method

A method for determining a media feature includes directing light toward a media path and a reflector. The reflector converges the light on a light detector. Intensity data is collected from the light detector and analyzed to determine the media feature.

Determining a media feature

A method of media handoff from a first device to a second device comprises transmitting a first signal from the first device indicating a medium is at a predetermined handoff point. The first device receives a second signal from the second device instructing the first device to transport the medium toward the second device. The first device transports the medium toward the second device and receives a third signal from the second device indicating acceptance of the medium by the second device.

Growing community of inventors

Vancouver, WA, United States of America

Jon Johnson