Exit roller system for an imaging apparatus
View Patent ↗An imaging apparatus includes a print engine having a print zone. A print media feed system transports a sheet of print media in a media feed direction along a media feed path through the print zone. The print media feed system includes a plurality of exit rollers positioned across a width of the media feed path. Each of a plurality of pressure rollers engages a respective one of the plurality of exit rollers to define a plurality of exit nips. A support structure mounts the plurality of exit rollers and the plurality of pressure rollers. The support structure positions the plurality of exit nips in an arrangement to define a transverse path across the width of the media feed path in the direction transverse to the media feed direction, the transverse path having a central portion and elevated portions on each side of the central portion.
1. An imaging apparatus for printing on a sheet of print media, comprising:
a print engine having a print zone;
print media feed system to transport said sheet of print media in a media feed direction along a media feed path through said print zone, said print media feed system including:
a plurality of exit rollers positioned across a width of said media feed path in a direction transverse to said media feed direction,
said plurality of exit rollers including a first exit roller having a first rotational axis, a second exit roller having a second rotational axis, a third exit roller having a third rotational axis and a fourth exit roller having a fourth rotational axis,
wherein in said direction transverse to said media feed direction, said first exit roller and said fourth exit roller form outermost exit rollers of said plurality of exit rollers, and said second exit roller and said third exit roller form interior exit rollers of said plurality of exit rollers,
wherein said second rotational axis and said third rotational axis are parallel, said first rotational axis being canted with respect to said second rotational axis, and said fourth rotational axis being canted with respect to said third rotational axis, with said first rotational axis and said fourth rotational axis being non-parallel;
a plurality of pressure rollers, each of said plurality of pressure rollers engaging a respective one of said plurality of exit rollers to define a plurality of exit nips; and
a support structure for mounting said plurality of exit rollers and said plurality of pressure rollers, said support structure positioning said plurality of exit nips in an arrangement to define a transverse path across said width of said media feed path in said direction transverse to said media feed direction, said transverse path having a central portion and elevated portions on each side of said central portion.
2. The imaging apparatus of claim 1 , wherein said transverse path is a curved path.
3. The imaging apparatus of claim 1 , wherein said plurality of exit rollers are positioned downstream of an upstream plurality of exit rollers with respect to said media feed direction.
4. The imaging apparatus of claim 1 , said arrangement of said plurality of exit nips forcing said sheet of print media to bend in a direction across a width of said media feed path to stiffen said sheet of print media in said media fed direction.
5. The imaging apparatus of claim 1 , further comprising a mid-frame positioned to provide support for said sheet of print media in said print zone, said arrangement of said plurality of exit nips forcing said sheet of print media into contact with said mid-frame.
6. The imaging apparatus of claim 1 , wherein said support structure includes multiple supports.