Printing apparatus

Patent metadata

Field	Value
Publication number	US-10040658-B2
Application number	US-201715459429-A
Country	US
Kind code	B2
Filing date	Mar 15, 2017
Priority date	Apr 4, 2016
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A printing apparatus includes a print section configured to perform printing on a first side of a medium and then perform printing on a second side that is a back side of the first side, a supply path configured to supply the medium toward the print section, a feeding roller configured to feed the medium along the supply path from an upstream side to a downstream side in a transport direction, a toothed roller provided on the downstream side of the feeding rollers in the transport direction, a drive source configured to rotate the feeding roller and the toothed roller, and a controller configured to control driving of the drive source. The controller performs rotation control for rotating the feed rollers prior to the rotation of the toothed roller with which the medium has collided.

First claim

What is claimed is:

1. A printing apparatus comprising:
a print section configured to perform printing on a first side of a medium and then perform printing on a second side that is a back side of the first side;
a supply path configured to supply the medium toward the print section;
a feeding roller configured to feed the medium along the supply path from an upstream side to a downstream side in a transport direction;
a toothed roller provided on the downstream side of the feeding roller in the transport direction;
a drive source configured to rotate the feeding roller and the toothed roller; and
a controller configured to control driving of the drive source,
wherein the controller performs rotation control for rotating the feed roller prior to the rotation of the toothed roller with which the medium has collided, and
the controller performs the rotation control when the controller determines that the grammage of the medium is greater than or equal to a threshold value.

2. The printing apparatus according to claim 1 , wherein the supply path includes:
a first supply path configured to supply the medium from a first supply section toward the print section; and
a second supply path configured to supply the medium from a second supply section toward the print section, the second supply path being curved more than the first supply path, and
the controller performs the rotation control when the medium is supplied from the first supply section along the first supply path.

3. The printing apparatus according to claim 1 , wherein the controller continues to rotate the feeding roller after the medium has collided with the toothed roller in the rotation control.

4. The printing apparatus according to claim 1 , further comprising:
a switchback mechanism configured to switch back the medium having the first side and the second side on which printing has been performed on the first side and to transport the medium to the supply path,
wherein, between a first transport operation in which the first side is on the print section side and a second transport operation in which the medium is switched back by the switchback mechanism and the second side is on the print section side, the controller performs the rotation control in the first transport operation.

5. The printing apparatus according to claim 1 , further comprising:
a clutch capable of interrupting the transmission of the driving force from the drive source to the toothed roller.

6. The printing apparatus according to claim 1 , wherein the drive source includes:
a first drive source configured to rotate the feeding roller; and
a second drive source configured to rotate the toothed roller.

7. The printing apparatus according to claim 1 , wherein
the supply path is one of a plurality of supply paths including more than two supply paths, and
the toothed roller is located at a position where the plurality of supply paths join together.

Assignees

• Seiko Epson Corp

Inventors

• Maeda Hiroyuki

Classifications

• B41J3/60

  for printing on both faces of the printing material · CPC title

• B65H7/02

  by feelers or detectors · CPC title

• B65H2404/1115

  toothed roller · CPC title

• B41J11/42

  Controlling {printing material conveyance for accurate alignment of the printing material with the printhead; Print registering} · CPC title

• B41J13/26

  Registering devices · CPC title