Unwinding or winding rolls of print substrate
AssigneeHewlett-Packard Development Company, L.P.
InventorsDaniel Gutierrez Garcia, Roger Terradellas Callau, Carlos Felip Aragon, Raimon Castells De Monet
Life of this patent
Estimating the term…
Abstract
In one example, a device for unwinding or winding multiple rolls of print substrate includes multiple spindles each to hold a roll of print substrate and a differential operatively connected to one end of each spindle. The spindles are aligned with one another lengthwise along a spindle axis and the differential is to output torque along a differential axis offset from the spindle axis to turn the spindles on the first axis.
Claims17
A device for unwinding or winding multiple rolls of print substrate, the device comprising:
- spindles each to hold a roll of print substrate, the spindles in line with one another lengthwise along a spindle axis;
- spindle gears rotatable on the spindle axis;
- and
- a differential operatively mounted along a differential axis offset from the spindle axis, the differential connected to a respective end of each spindle of the spindles, the differential to receive an input torque from a driveline along the spindle axis, redirect the input torque to a torque along the differential axis, and transmit an output torque based on the torque along the differential axis to turn the spindles on the spindle axis, wherein the differential comprises:
- an input gear on the differential axis to receive the input torque from the driveline, and
- output gears on the differential axis to transmit the output torque based on the torque along the differential axis to the spindle gears.
A printer comprising:
- a mount to hold a pen for dispensing a printing fluid;
- a spindle assembly to wind and unwind rolls of print substrate, the spindle assembly comprising:
- spindles each to hold a respective roll of print substrate of the rolls of print substrate, the spindles co-axial along a spindle axis;
- spindle gears rotatable on the spindle axis;
- and
- a differential operatively mounted along a differential axis offset from the spindle axis, the differential connected to a respective end of each spindle of the spindles, the differential to receive an input torque from a driveline along the spindle axis, redirect the input torque to a torque along the differential axis, and transmit an output torque based on the torque along the differential axis to turn the spindles on the spindle axis, wherein the differential comprises:
- an input gear on the differential axis to receive the input torque from the driveline;
- and
- output gears on the differential axis to transmit the output torque based on the torque along the differential axis to the spindle gears.
Dependencies are inferred from the claim text.