PRINTING APPARATUS AND PRINTING METHOD
First Claim
1. A printing apparatus, comprising:
- a conveying unit including an upstream roller and a downstream roller located downstream of the upstream roller in a conveying direction and configured to convey a printing medium in contact with the upstream roller and the downstream roller in the conveying direction by rotating the upstream roller and the downstream roller; and
an ink discharging unit configured to discharge ink to the printing medium being conveyed by the conveying unit;
wherein;
each of the upstream roller and the downstream roller is in contact with the printing medium on a peripheral surface shaped to increase a diameter from a center toward ends in an axial direction; and
the ink discharging unit discharges the ink to the printing medium located in a first range from an upstream end of an upstream contact part, where the upstream roller and the printing medium are in contact, to a downstream end of a downstream contact part, where the downstream roller and the printing medium are in contact, in the conveying direction.
1 Assignment
0 Petitions
Accused Products
Abstract
The ink is discharged to the printing medium F located in the first range R1 from the upstream end Wuu of the upstream winding part Wu where the support roller 26a and the printing medium F are in contact to the downstream end Wdd of the downstream winding part Wd where the support roller 26e and the printing medium F are in contact. The support rollers 26a, 26e located on both ends of the first range R1 are in contact with the printing medium F on the peripheral surfaces 261 having such a concave shape to increase the diameter from the center toward the ends in the width direction Y (axial direction). This causes these support rollers 26a, 26e to suppress the formation of wrinkles in the first range R1 where the ink is discharged.
-
Citations
7 Claims
-
1. A printing apparatus, comprising:
-
a conveying unit including an upstream roller and a downstream roller located downstream of the upstream roller in a conveying direction and configured to convey a printing medium in contact with the upstream roller and the downstream roller in the conveying direction by rotating the upstream roller and the downstream roller; and an ink discharging unit configured to discharge ink to the printing medium being conveyed by the conveying unit; wherein; each of the upstream roller and the downstream roller is in contact with the printing medium on a peripheral surface shaped to increase a diameter from a center toward ends in an axial direction; and the ink discharging unit discharges the ink to the printing medium located in a first range from an upstream end of an upstream contact part, where the upstream roller and the printing medium are in contact, to a downstream end of a downstream contact part, where the downstream roller and the printing medium are in contact, in the conveying direction. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A printing method, comprising:
-
rotating an upstream roller and a downstream roller located downstream of the upstream roller in a conveying direction to convey a printing medium in contact with the upstream roller and the downstream roller in the conveying direction; and discharging ink to the printing medium located in a first range from an upstream end of an upstream contact part, where the upstream roller and the printing medium are in contact, to a downstream end of a downstream contact part, where the downstream roller and the printing medium are in contact, in the conveying direction, wherein each of the upstream roller and the downstream roller is in contact with the printing medium on a peripheral surface shaped to increase a diameter from a center toward ends in an axial direction.
-
Specification