# US 10,308,459 B2 · Medium wind-up apparatus

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- Number: US 10,308,459 B2
- Document ID: US10308459B2
- Status: Granted
- Kind: B2
- Application number: 15/462,452
- Filed: 2017-03-17
- Published: 2017-09-28
- Granted: 2019-06-04
- Earliest claimed: 2016-03-24
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Ryo Hamano; Toru Hayashi
- Web page: https://patentgrep.com/patent/US10308459B2

## CPC

- B65H 18/103: {Reel-to-reel type web winding and unwinding mechanisms}
- B41J 15/04: Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B65H 23/16: by weighted or spring-pressed movable bars or rollers
- B65H 23/1806: {in reel-to-reel type web winding and unwinding mechanism, e.g. mechanism acting on web-roll spindle}
- B65H 23/185: motor-controlled
- B65H 23/192: motor-controlled
- B65H 23/198: motor-controlled {(Controlling electrical drive motors therefor)}
- B65H 2301/5143: Warming
- B65H 2301/517: Drying material
- B65H 2403/942: Bidirectional powered handling device
- B65H 2513/11: angular
- B65H 2553/51: Encoders, e.g. linear
- B65H 2557/242: involving a particular data profile or curve
- B65H 2557/2644: characterised by PID control
- B65H 2801/36: Plotting
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A medium wind-up apparatus includes a reel-out motor, which is a driving source that winds up a medium, a control portion that controls the reel-out motor on the basis of a torque limit value, which regulates an upper limit of an output torque of the reel-out motor, and a reel-out side detection portion that detects a rotation speed of the reel-out motor, in which the control portion changes the torque limit value on the basis of the detected rotation speed. In this case, it is preferable that the control portion increase the torque limit value in a case in which the detected rotation speed falls below a first threshold value, and that the control portion reduce the torque limit value in a case in which the detected rotation speed exceeds a second threshold value, which is larger than the first threshold value.

## Claims

### Claim 1

A medium wind-up apparatus comprising:
a motor, which is a driving source that winds up a medium;
a control portion that controls the motor on the basis of a torque limit value, which regulates an upper limit of an output torque of the motor; and
a detection portion that detects a rotation speed of the motor,
wherein the control portion changes the torque limit value on the basis of the detected rotation speed.

### Claim 2 (depends on 1)

The medium wind-up apparatus according to claim 1,
wherein the control portion decreases the torque limit value in a case in which the detected rotation speed exceeds a threshold value.

### Claim 3 (depends on 1)

The medium wind-up apparatus according to claim 1,
wherein the control portion increases the torque limit value in a case in which the detected rotation speed falls below a threshold value.

### Claim 4 (depends on 1)

The medium wind-up apparatus according to claim 1,
wherein the control portion increases the torque limit value in a case in which the detected rotation speed falls below a first threshold value, and
wherein the control portion decreases the torque limit value in a case in which the detected rotation speed exceeds a second threshold value, which is larger than the first threshold value.

### Claim 5 (depends on 1)

The medium wind-up apparatus according to claim 1, further comprising:
a reel-out portion that includes the motor and in which a roll body, around which the medium is wound, is set; and
a wind-up portion that winds up the medium that is reeled out from the roll body,
wherein the control portion changes the torque limit value on the basis of the detected rotation speed when the medium wound up by the wind-up portion is rewound by the reel-out portion.