Hewlett-packard Development Company, L.p.

Bhishma Hernandez Martinez

Michel Georges Encrenaz

Fernando Bayona Alcolea

Albert Estella

Joan-Albert Miravet

Fernando Bayona

Albert Crespi

Marta Tua Sarda

Joan Albert Miravet

A mark mitigating device for a printing device has a protector sheet to cover ribs of a printer platen of the printer device to prevent the ribs from causing marks on print media. The mark mitigating device further has a fixing system to fixate the mark mitigating device relative to the printer platen. The protector sheet has an opening to pass through vacuum applied by the printer platen to attract print media.

Mark mitigating device

A pump for the transfer a predetermined total volume of fluid from a pump inlet to a pump outlet in a unit of time is calibrated by deriving a count of the number of times a volume of the fluid is transferred from a pump inlet to a pump outlet in a unit of time; and adjusting the number of times the volume is transferred in a unit of time until the derived count is substantially equal to a predetermined threshold value.

Calibration of a pump

An example device in accordance with an aspect of the present disclosure includes a first reservoir for a printable composition, a pump fluidically coupled to the first reservoir and a second reservoir, a sensor, and a controller. The controller is to identify first and second reservoir statuses based on the sensor.

Identifying first and second reservoir statuses

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Sant Cugat del Valles, Spain

Bhishma Hernandez Martinez