Recording device

Patent metadata

Field	Value
Publication number	US-11142006-B2
Application number	US-202016795363-A
Country	US
Kind code	B2
Filing date	Feb 19, 2020
Priority date	Feb 21, 2019
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

A recording device includes a medium support portion, a recording head configured to eject a liquid toward a medium supported by the medium support portion, a gantry that includes the recording head and is configured to move relative to the medium support portion in a Y-axis direction, a first linear scale attached to a first attachment member, a first encoder configured to read markings of the first linear scale while moving, together with the gantry, relative to the medium support portion in the Y-axis direction to detect a displacement of the gantry, and a length adjustment unit configured to adjust a length of the first linear scale attached to the first attachment member, by adjusting a tension in the Y-axis direction applied to the first linear scale.

First claim

What is claimed is:

1. A recording device comprising:
a medium support portion configured to support a medium;
an ejecting unit configured to eject a liquid toward a medium supported by the medium support portion;
a moving unit that includes the ejecting unit and is configured to move relative to the medium support portion in a first axial direction;
at least one linear scale provided with markings formed in the first axial direction;
a detector configured to read the markings of the at least one linear scale while moving, together with the moving unit, relative to the medium support portion in the first axial direction to detect a displacement of the moving unit; and
a length adjustment unit configured to adjust a length of the linear scale in the first axial direction, by adjusting a tension in the first axial direction applied to the at least one linear scale,
wherein the moving unit is a carriage configured to move in a width direction, as the first axial direction, extending along a short side of the medium support portion,
wherein when a direction intersecting with the first axial direction is a second axial direction,
a gantry is configured to move in a length direction, as the second axial direction, extending along a long side of the medium support portion,
at least one second linear scale is provided with markings formed in the second axial direction and having tension applied in a direction along the second axial direction,
a second detector configured to read the markings of the at least one second linear scale while moving, together with the gantry, relative to the medium support portion in the second axial direction to detect a displacement of the gantry, and
a second length adjustment unit configured to adjust the tension to adjust a length of the at least one second linear scale in the second axial direction.

2. The recording device according to claim 1 , comprising:
a fixing member provided fixed in position in the first axial direction; and
a moving member provided movable in the first axial direction, wherein
the fixing member is attached to a first end portion, the first end portion is one end portion in the first axial direction of the at least one linear scale,
the moving member is attached to a second end portion, the second end portion is an end portion opposite to the first end portion in the first axial direction of the at least one linear scale and
the length adjustment unit is configured to adjust a position of the moving member in the first axial direction.

3. The recording device according to claim 2 , wherein the second end portion is attached to the moving member via an elastic member having elasticity in a direction along the first axial direction.

4. The recording device according to claim 2 , wherein at least one of the fixing member and the moving member is adjustable in position in a second axial direction intersecting with the first axial direction.

5. A recording device comprising:
a medium support portion configured to support a medium;
an ejecting unit configured to eject a liquid toward a medium supported by the medium support portion;
a moving unit that includes the ejecting unit and is configured to move relative to the medium support portion in a first axial direction;
at least one linear scale provided with markings formed in the first axial direction;
a detector configured to read the markings of the at least one linear scale while moving, together with the moving unit, relative to the medium support portion in the first axial direction to detect a displacement of the moving unit; and
a length adjustment unit configured to adjust a length of the linear scale in the first axial direction, by adjusting a tension in the first axial direction applied to the at least one linear scale,
wherein the moving unit is a gantry configured to move in a length direction, as the first axial direction, extending along a long side of the medium support portion,
wherein when a direction intersecting with the first axial direction is a second axial direction,
a carriage is configured to move in a width direction, as the second axial direction, extending along a short side of the medium support portion,
at least one second linear scale provided with markings formed in the second axial direction and having tension applied in a direction along the second axial direction,
a second detector is configured to read the markings of the at least one second linear scale while moving, together with the carriage, relative to the medium support portion in the second axial direction to detect a displacement of the carriage, and
a second length adjustment unit configured to adjust the tension to adjust a length of the at least one second linear scale in the second axial direction.

6. The recording device according to claim 5 , comprising:
a fixing member provided fixed in position in the first axial direction; and
a moving member provided movable in the first axial direction, wherein
the fixing member is attached to a first end portion, the first end portion is one end portion in the first axial direction of the at least one linear scale,
the moving member is attached to a second end portion, the second end portion is an end portion opposite to the first end portion in the first axial direction of the at least one linear scale and
the length adjustment unit is configured to adjust a position of the moving member in the first axial direction.

7. The recording device according to claim 6 , wherein the second end portion is attached to the moving member via an elastic member having elasticity in a direction along the first axial direction.

8. The recording device according to claim 6 , wherein at least one of the fixing member and the moving member is adjustable in position in a second axial direction intersecting with the first axial direction.

Assignees

• Seiko Epson Corp

Inventors

• Hiruma daisuke

Classifications

• B41J25/005 Primary

  for serial printing movements superimposed to character- or line-spacing movements · CPC title

• B41J19/202

  Drive control means for carriage movement · CPC title

• B41J2/01 Primary

  Ink jet · CPC title

• B41J2/04508

  aiming at correcting other parameters · CPC title

• B41J19/207 Primary

  Encoding along a bar · CPC title