Hewlett-packard Development Company, L.p.

Alexander M Nameroff

Michael Alan Fairchild

Devin Scott Uehling

Kevin Lo

Matias Negatu

Jesse Phillips

John Pruyn

Robert Wesley Luffel

Anthony Peter Carcia

Taehong Kim

Taejin Baek

Alan Hayes

Joshua Peter Yasbek

Jesse Philips

Wee Teck Woon

Dan Canfield

Mike W Munro

Josh Yasbek

Mark Olson

Mike Fairchild

A base device to support a finisher includes a base pan, a first plurality of casters coupled to the base pan, a second plurality of casters coupled to the base pan, and a recess to receive a tip foot. The base pan includes a section which protrudes outward from a first side of the base pan. The first plurality of casters are coupled to the base pan to contact a surface when the base pan is level with respect to the surface, each of the first plurality of casters being beside a respective separate corner of the base pan and at least two of the first plurality of casters being beside the section. The second plurality of casters are to be positioned above the surface when the base pan is level with respect to the surface and to contact the surface when the base pan is inclined to a threshold.

Base device to prevent tip and tilt of finisher

Some examples include a grounding system for an image forming apparatus. The grounding system includes a lifting plate having a top surface for storing media and an interface, a cable having a first end and an opposing second end, the first end attached at the interface, a retainer attached to the lifting plate at the interface, the retainer releasably securing the cable to the lifting plate, and a winding spool coupled to the second end of the cable, the winding spool to transfer torque to the cable and to accommodate a length of cable wound around the winding spool. Each of the lifting plate, the cable, and the winding spool are electrically conductive to release electrostatic energy from the media.

Grounding for media

In one example, a media size detector includes a button coupled to a spring of a housing to interact with a media size adjuster of a media tray, a first side of a lever to receive pressure from the spring when the button is depressed by the media size adjuster, and a second side of the lever to apply pressure to activate or deactivate a switch coupled to a printed circuit assembly when the first side of the lever receives pressure from the spring.

Media size detector

Some examples include a media level state indicator of an image forming apparatus. The media level state indicator including a gear assembly of interconnected gears including a first gear, a second gear, and a cam fixedly disposed on the first gear, the second gear coupled to a media lift system and rotatable with a shaft of the media lift system, the first gear and the cam rotatably coupled to the second gear, a cam follower to selectively contact the cam, the cam follower moveable in response to contacting rotational movement of the cam, and a signal device coupled to the cam follower, the signal device having a first media level state and a second media level state, the signal device to move between the first media level state and the second media level state as the media lift system changes a position of a lift plate.

Media level state indicator

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

An accessory mating system for mating a print engine to an accessory may include a pin and a pin receiving detent. The pin has a collar having a pin vertical axis datum surface and a shaft extending from the collar. The shaft provides left-right axis datum surfaces and second opposite sides providing fore-aft axis datum surfaces. The pin receiving detent receives the pin. The pin receiving detent may include a detent perimeter providing a detent vertical axis datum surface, first opposite internal sides providing first detent left-right axis datum surfaces facing the pin left-right axis datum surfaces and second opposite internal sides providing detent fore-aft axis datum surfaces.

Print engine and accessory mating

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

An assembly of a device having a component, the assembly including a damper having a damper gearwheel coupled to a damper member. The damper member has a first condition restricting motion of the component of the device to a first rate in a first direction and a second condition restricting motion of the component of the device to a second rate in the first direction slower than the first rate. The damper gearwheel is rotationally fixed relative to the damper member when the damper is in the first condition. The damper gearwheel is rotatable relative to the damper member when the damper is in the second condition.

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Vancouver, WA, United States of America

Alexander M Nameroff