# US 2014/0197267 A1 · Medium transport device

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- Number: US 2014/0197267 A1
- Document ID: US20140197267A1
- Status: Published application
- Kind: A1
- Application number: 14/150,328
- Filed: 2014-01-08
- Published: 2014-07-17
- Earliest claimed: 2013-01-15
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Tsuneyuki SASAKI; Yasuo NARAMATSU
- Web page: https://patentgrep.com/patent/US20140197267A1

## CPC

- B65H 23/1882: {and controlling longitudinal register of web}
- B65H 23/032: Controlling transverse register of web
- B65H 18/103: {Reel-to-reel type web winding and unwinding mechanisms}
- B65H 2301/12: of sheets or web
- B65H 2404/693: Retractable guiding means, i.e. between guiding and non guiding position
- B65H 2801/12: Single-function printing machines, typically table-top machines
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES

## Abstract

A medium transport device is provided. The medium transport device includes a transporting portion that transports a medium in a transport direction, a winding portion that winds the medium, and a friction member that suppresses displacement of the medium in a cross direction with the transport direction. The displacement in the cross direction is suppressed by causing the friction member to contact the medium. A contact state of the medium with the friction member is changed in accordance with a winding mode in which the medium transported by the transporting portion is wound around the winding portion, and a non-winding mode in which the medium transported by the transporting portion is not wound around the winding portion.

## Claims

### Claim 1

A medium transport device comprising:
a transporting portion that transports a medium in a transport direction;
a winding portion that winds the medium; and
a friction member that is configured to come into contact with the medium and that is configured to suppress displacement of the medium in a direction that is transverse to the transport direction when the friction member comes into contact with the medium,
wherein a contact state of the medium with the friction member is changed in accordance with a winding mode in which the medium transported by the transporting portion is wound around the winding portion, and a non-winding mode in which the medium transported by the transporting portion is not wound around the winding portion.

### Claim 2 (depends on 1)

The medium transport device according to claim 1, further comprising:
a winding mode transport path which is a transport path of the medium in the winding mode,
wherein the friction member is provided in the winding mode transport path.

### Claim 3 (depends on 2)

The medium transport device according to claim 2, further comprising:
a medium support portion that supports the transported medium,
wherein, when the non-winding mode is switched to the winding mode, an orientation of the medium support portion is changed to a direction in which the medium is introduced to the friction member and comes into contact with the medium.

### Claim 4 (depends on 1)

The medium transport device according to claim 1, further comprising:
a common transport path which is a transport path of the medium in both the winding mode and the non-winding mode,
wherein, in the winding mode, the friction member is provided in the common transport path.

### Claim 5 (depends on 1)

The medium transport device according to claim 1,
wherein the medium is brought into contact with a first friction member in the winding mode and with a second friction member that is different from the first friction member in the non-winding mode.

### Claim 6 (depends on 1)

The medium transport device according to claim 1, further comprising:
a medium support portion that supports the transported medium; and
a connection portion that rotatably supports the friction member with respect to the medium support portion,
wherein, in the winding mode, the medium comes into contact with the friction member.

### Claim 7

A medium transport method of a medium transport device that includes a friction member configured to come into contact with a medium, the method comprising:
transporting the medium in a winding mode while winding the medium with a winding portion; and
transporting the medium in a non-winding mode without winding the medium with the winding portion,
wherein a contact state of the medium with the friction member is changed in accordance with the transporting the medium in a winding mode and transporting the medium without winding the medium.

### Claim 8 (depends on 7)

The medium transport method of claim 7, further comprising changing the contact state of the medium such that friction member contacts the medium in the winding mode and such that the friction member does not contact the medium in the non-winding mode.