Print arrangement
AssigneeHewlett-Packard Industrial Printing Ltd.
InventorsYuval DIM, Yaron Dekel, Yehuda Ben Abu
Life of this patent
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Abstract
Print arrangement, comprising a first roll, a transport surface, a nip between the first roll and the transport surface through which, at least during printing, a substrate is threaded, a drive system arranged to change a width of the nip, and a lateral stretch member arranged to engage a side of the substrate. The first roll comprises a two coaxially aligned roll segments of similar diameters for rolling over the substrate, with a distance in between.
Claims19
Print arrangement, comprising
- a first roll,
- a transport surface,
- a nip between the first roll and the transport surface through which, at least during printing, a substrate is threaded,
- a drive system arranged to change a width of the nip, and
- a lateral stretch member arranged to engage a side of the substrate, wherein
- the first roll comprises a two coaxially aligned roll segments of similar diameters for rolling over the substrate, with a distance in between, for inducing a stretch in the substrate, at least between the two roll segments, in a transverse direction and at least near a middle portion of the substrate.
Method of maintaining an even substrate surface, comprising
- feeding a substrate to a print arrangement,
- moving the substrate by rotating at least one roll,
- stretching the substrate in a transverse direction with respect to the substrate moving direction by
- applying a stretching force to a side portion of the substrate so that the substrate is transversely stretched, and rolling two co-axially arranged roll segments with a distance in between and of similar diameters over a middle portion of the surface of the substrate so that the substrate portion between the two roll segments is transversely stretched, and
- printing the substrate.
Print substrate stretch arrangement, comprising
- transport rolls for transporting the substrate for printing,
- at least one pressure roll,
- a nip between the pressure roll and a respective transport roll through which, at least during printing, a substrate is threaded,
- the pressure roll comprising intermittently and co-axially arranged first and second roll segments, the first roll segments having a larger diameter than the second roll segments for inducing a stretch in the substrate in a direction transverse with respect to the substrate moving direction, and
- opposite lateral stretch members, each arranged to engage a respective side portion of the substrate.
Dependencies are inferred from the claim text.