Hewlett-Packard Development Company, L.p.

Abel Martinez-Guillen

Raimon Castells De Monet

David Toussaint

Lluis Valles Casanova

Jerry Claesson

Albert Perez-Madrigal

In one example in accordance with the present disclosure a device to detect media being wound around a wheel is described. The device includes a reel that collects the media and a movable arm pivotally coupled to the reel to provide tension to the media being wound around the reel. The device also includes a controller that detects media is being wound around the reel by 1) determining an angular position of the movable arm and 2) calculating, based on the angular position of the movable arm, when an output of a motor that rotates the reel is non-zero.

Movable arm

An indication is received of a vacuum source level measured by a vacuum sensor in a printing device. The vacuum level is associated with a pulse-width modulation (PWM) level for a PWM controller. The measured vacuum level is compared to an expected vacuum level. The PWM level of the PWM controller is adjusted in view of the comparison to achieve a virtual PWM level.

Growing community of inventors

Hospitalet de Llobregat, Spain

Abel Martinez-Guillen