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US 12,630,380 B2Granted
Roller pair for conveying sheets and printing apparatus
AssigneeRiso Kagaku Corporation
InventorMasayoshi Sakamoto
Life of this patent
Estimating the term…
Abstract
A roller pair for conveying sheets is equipped with a first roller and a second roller that sandwich and convey sheet members. At least one of the first roller and the second roller has a concave-convex portion on the surface thereof, and the at least one of the rollers having the concave-convex portion on the surface thereof further has flange portions and at both ends in the axial direction thereof.
Claims4
A roller pair for conveying sheets, comprising:
- a first roller and a second roller that sandwich and convey a sheet member;
- at least the first roller has a concave-convex portion on a surface thereof as viewed from an axial direction of the first roller;
- and
- the at least first roller having the concave-convex portion on the surface thereof further has flange portions at both ends in the axial direction of the first roller,
- wherein the flange portions have an outer diameter which is higher than the bottoms of the concave portions and lower than the heights of the convex portions of the concave-convex portion as viewed from the axial direction of the first roller.
2 more elements
A roller pair for conveying sheets, comprising:
- a first roller and a second roller that sandwich and convey a sheet member;
- at least the first roller has a concave-convex portion on a surface thereof as viewed from an axial direction of the first roller;
- and
- the at least first roller having the concave-convex portion on the surface thereof further has flange portions at both ends in the axial direction of the first roller,
- wherein the second roller has the concave-convex portion on a surface thereof, and
- wherein the second roller having the concave-convex portion on the surface thereof further has flange portions at both ends in the axial direction of the second roller.
3 more elements
A roller pair for conveying sheets, comprising:
- a first roller and a second roller that sandwich and convey a sheet member;
- at least the first roller has a concave-convex portion on a surface thereof as viewed from an axial direction of the first roller;
- and
- the at least first roller having the concave-convex portion on the surface thereof further has flange portions at both ends in the axial direction of the first roller,
- wherein the flange portions have an outer diameter which is higher than the bottoms of the concave portions and higher than the heights of the convex portions of the concave-convex portion.
2 more elements
Dependencies are inferred from the claim text.