Medium transportation device, recording apparatus, post-processing apparatus, relay apparatus, and uneven roller
AssigneeSeiko Epson Corporation
InventorsHirohisa KODAIRA, Kohei UENO
Life of this patent
Estimating the term…
Abstract
Provided is a medium transportation device including an uneven roller of which a surface coming into contact with a medium is provided with a plurality of protrusions and recesses, a facing roller nipping the medium together with the uneven roller, and a claw portion guiding the medium to be separated from the uneven roller. A non-uneven region in which the protrusions and recesses are not formed along a circumferential direction is formed at a portion of the uneven roller in an axial direction and the claw portion faces and the non-uneven region.
Claims16
A medium transportation device transporting a medium onto which liquid is discharged, the medium transportation device comprising:
- an uneven roller of which a surface coming into contact with the medium is provided with a plurality of protrusions and recesses;
- a facing roller nipping the medium together with the uneven roller;
- and
- a claw portion guiding the medium to be separated from the uneven roller, wherein
- a non-uneven region in which the protrusions and recesses are not formed along a circumferential direction is formed at a portion of the uneven roller in an axial direction, and
- the claw portion faces the non-uneven region.
An uneven roller of which a surface coming into contact with a medium, onto which liquid is discharged, is provided with a plurality of protrusions and recesses, the uneven roller comprising:
- a shaft portion;
- and
- a ring portion mounted on the shaft portion, wherein
- the ring portion includes
- a plurality of uneven rings that are rings mounted on the shaft portion and that are provided with a plurality of protrusion portions disposed along a circumferential direction, and
- a facing ring that is a ring forming a non-uneven region in which the protrusions and recesses are not formed in the circumferential direction and that faces a claw portion guiding the medium to be separated from the uneven roller, and
- an outermost diameter of the facing ring is smaller than outermost diameters of the uneven rings.
Dependencies are inferred from the claim text.