Medium feeding apparatus, printing apparatus, and control method of medium feeding apparatus

Patent metadata

Field	Value
Publication number	US-10118418-B2
Application number	US-201715462537-A
Country	US
Kind code	B2
Filing date	Mar 17, 2017
Priority date	Mar 31, 2016
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

A medium feeding apparatus includes a roll holding portion which holds a roll body around which a printing medium is wound, a feeding roller which pulls out the printing medium from the roll body and feeds the printing medium, a roll motor which rotates the roll body held by the roll holding portion, a roll motor control portion which controls the roll motor, and rotation position detecting portions which detect a rotation position of the roll body, the roll motor control portion performs removing looseness of the printing medium pulled out from the roll body by driving the roll motor and rotating the roll body in a rewinding direction, and in the removing, driving of the roll motor is finished on the basis of movement of the rotation position detected by the rotation position detecting portions.

First claim

What is claimed is:

1. A medium feeding apparatus comprising:
a holding portion that holds a roll body around which a medium is wound;
a medium feeding portion that pulls out the medium from the roll body and feeds the medium;
a roll motor that rotates the roll body held by the holding portion;
a control portion that controls the roll motor; and
a rotation position detecting portion that detects a rotation position of the roll body,
wherein the control portion performs removing looseness of the medium pulled out from the roll body by driving the roll motor and rotating the roll body in a rewinding direction,
wherein, in the removing, the control portion determines for a current interrupt period whether the rotation position equals a maximum rotation position, the maximum rotation position being a rotation position of one or more previous interrupt periods, and
wherein when the rotation position equals the maximum rotation position, the control portion further determines a number of times that the rotation position continues to equal the maximum rotation position, and
wherein, in the removing, driving of the roll motor is finished on the basis of movement of the rotation position detected by the rotation position detecting portion.

2. The medium feeding apparatus according to claim 1 ,
wherein, in the removing, determination whether or not the roll body is unmoved is made by the movement of the rotation position, and when the roll body is determined to be unmoved, driving of the roll motor is finished.

3. The medium feeding apparatus according to claim 2 ,
wherein, in the removing, when a maximum value of the detected rotation position is not changed at a certain time, the roll body is determined to be unmoved.

4. A printing apparatus comprising:
the medium feeding apparatus according to claim 3 ; and
a printing portion that performs printing on a medium being fed by the medium feeding apparatus.

5. The printing apparatus according to claim 4 ,
wherein the control portion performs removing in every line feed operation.

6. The medium feeding apparatus according to claim 2 ,
wherein, in the removing, determination whether or not the roll body is unmoved starts when the current rotation position of the roll body exceeds the rotation position at the time of starting the removing in the rewinding direction.

7. A printing apparatus comprising:
the medium feeding apparatus according to claim 6 , and
a printing portion that performs printing on a medium being fed by the medium feeding apparatus.

8. The printing apparatus according to claim 7 ,
wherein the control portion performs removing in every line feed operation.

9. A printing apparatus comprising:
the medium feeding apparatus according to claim 2 ; and
a printing portion that performs printing on a medium being fed by the medium feeding apparatus.

10. The printing apparatus according to claim 9 ,
wherein the control portion performs removing in every line feed operation.

11. A printing apparatus comprising:
the medium feeding apparatus according to claim 1 ; and
a printing portion that performs printing on a medium being fed by the medium feeding apparatus.

12. The printing apparatus according to claim 11 ,
wherein the control portion performs removing in every line feed operation.

13. A control method of a medium feeding apparatus which includes a holding portion that holds a roll body around which a medium is wound, a medium feeding portion that pulls out the medium from the roll body and feeds the medium, and a roll motor that rotates the roll body held by the holding portion, the method comprising:
removing the looseness of the medium pulled out from the roll body by driving the roll motor and rotating the roll body in a rewinding direction, and
finishing driving of the roll motor based on movement of a rotation position of the roll body in the removing,
wherein, in the removing, the control portion determines for a current interrupt period whether the rotation position equals a maximum rotation position, the maximum rotation position being a rotation position of one or more previous interrupt periods, and
wherein when the rotation position equals the maximum rotation position, the control portion further determines a number of times that the rotation position continues to equal the maximum rotation position.

Assignees

• Seiko Epson Corp

Inventors

• Yoshida Hiroshi
• Hayashi Toru
• Hamano Ryo
• Ushiama Jun

Classifications

• B41J13/0009 Primary

  control of the transport of the copy material · CPC title

• B41J15/04 Primary

  Supporting, feeding, or guiding devices; Mountings for web rolls or spindles · CPC title

• B65H2406/31

  Suction box; Suction chambers · CPC title

• B65H2403/942

  Bidirectional powered handling device · CPC title

• B65H20/005

  Electrical drive motor control devices therefor · CPC title