Hewlett-packard Development Company, L.p.

Devin Scott Uehling

Alexander M Nameroff

Kevin Lo

Alan Shibata

Jeffrey G Bingham

Daniel James Magnusson

Stuart A Scofield

Peter J Boucher

Ian Patrick Anderson

Kevin Witkoe

Devin Michael Knowles

Saurabh Shripad Bhide

Joseph C O'Banion

Ethan Lee

Kevin K Kuramura

Stuart Scofield

An example bridge module includes a media transport roller to move in a translational direction, a rotatable guide proximate to the media transport roller, a handle coupled to the rotatable guide to cause the rotatable guide to articulate into an open configuration and away from the media transport roller, and an elongated member operatively connected to the rotatable guide, the elongated member to articulate into the open configuration creating an unobstructed pathway to the media transport roller.

Bridge module guides

In some examples, velocity and torque based media motor control may include ascertaining a velocity and torque for a feed roller motor associated with a feed roller, and ascertaining a velocity and torque for a drive roller motor associated with a drive roller that is to receive media from the feed roller. Further, velocity and torque based media motor control may include determining whether the torque for the drive roller motor is greater than a torque target. In response to a determination that the torque for the drive roller motor is greater than the torque target, the torque for the drive roller motor may be reduced to the torque target, and the torque for the drive roller motor may be maintained at the torque target.

Velocity and torque based media motor control

A media drive may include a media drive member, a shaft, a pick arm rotationally supporting the media drive member and a transmission operably coupling the shaft and the media drive member such that rotation of the shaft in a first direction drives the media drive member. A one-way clutch may be coupled to the shaft so as to be operably disengaged from the shaft in response to the shaft rotating in the first direction, wherein the one-way clutch is to rotate with the shaft in response to the shaft being rotated in a second direction opposite the first direction. A torque limiter may be connected to the one-way clutch to rotate with the one-way clutch, wherein the torque limiter is coupled to the pick arm to pivot the pick arm and the media drive member in response to the shaft being rotated in the second direction.

Pick arm raise with one-way clutch and torque limiter

In one example in accordance with the present disclosure, a sheet transport device is described. The sheet transport device includes a pickup roller to insert a sheet into a sheet path. A pair of separation rollers of the sheet transportation device form a nip that advances the sheet along the sheet path. A first separation shaft on which a first separation roller is disposed rotates in a first direction as the sheet is advanced and a second separation shaft on which a second separation roller is disposed also rotates in the first direction as the sheet is advanced. The second separation roller is driven in a second direction via a torque limiter. A motor rotates the shafts. A one-way clutch is disposed on the second separation shaft to disengage the second separation shaft from the motor when the motor is operating in a reverse mode.

Sheet transport with one-way clutch to disengage separation shaft

In one example, a torque control system for a sheet media pick mechanism to move a top sheet of media from a stack of media sheets into a nip between a pick roller and a separator roller. The torque control system includes a sensor to sense a number of consecutive pick failures and a controller operatively connected to the sensor to reduce a torque applied to the separator roller during a pick attempt after each pick failure in an amount corresponding to the number of consecutive pick failures sensed by the sensor.

Torque control in a sheet media pick mechanism

In some examples, printing device performance analysis may include actuating a motor to operate a first separation tire of a printing device in a first rotary direction. The first separation tire may be operable adjacent to a second separation tire rotatable in a second rotary direction that is opposite to the first rotary direction to separate physical media. Printing device performance analysis may further include actuating the motor to operate the first separation tire in the second rotary direction, and determining whether a motor torque difference of the motor between the first and second rotary directions is greater than a predetermined threshold.

Printing device performance analysis

A mechanical flag for an object detection device includes a body portion, a head portion extending from the body portion, a tail portion extending from the body portion; and an elongate aperture disposed in the body portion and about which the mechanical flag is rotatable and translatable.

Rotatable and translatable mechanical flag

A separator assembly is disclosed herein. An example includes a base to mount to a printing device and a wall supported by the base. The example also includes a singulation assembly adjacent the wall to separate a medium from a media stack and a ramp adjacent the singulation assembly to guide the medium from the media stack to a feed assembly. The example further includes a corner relief feature on either side of and below the ramp into which corners of the medium may drop and travel below a remainder of the medium as the medium is guided from the media stack to the feed assembly and a guide adjacent each corner relief feature to lift the corners of the medium out of the corner relief features before the medium enters the feed assembly. A media handling assembly is also disclosed herein as is a method of media handling.

Growing community of inventors

Vancouver, WA, United States of America

Devin Scott Uehling