Liquid ejecting apparatus

Patent metadata

Field	Value
Publication number	US-9283768-B2
Application number	US-201213717163-A
Country	US
Kind code	B2
Filing date	Dec 17, 2012
Priority date	Jun 23, 2005
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A head unit is configured to be attached to a base and includes: a nozzle array group including a plurality of nozzle arrays each of which is defined by a plurality of nozzles that are arranged in a first direction and which are arranged in a second direction orthogonal to the first direction; and two correctors configured to adjust an angle of the plurality of nozzle arrays with respect to the base, one of the correctors disposed outside of the nozzle array group in the second direction.

First claim

What is claimed is:

1. A head unit comprising:
a base extended in a first direction;
a first head fixed to the base, the first head comprising a nozzle array extended in the first direction;
a second head fixed to the base, the second head comprising a nozzle array extended in the first direction, the second head configured to print continual dots with the first head;
a first corrector configured to rotate and adjust an angle of the first head with respect to the base, the first corrector disposed at a first side in a second direction orthogonal to the first direction with respect to the first head; and
a second corrector configured to rotate and adjust an angle of the second head with respect to the base, the second corrector disposed at a second side opposite to the first side in the second direction with respect to the second head, wherein
the first head is configured to print first dots with a dot pitch in the first direction,
the second head is configured to print second dots with the dot pitch in the first direction,
the first dots and the second dots are configured to form a line with the dot pitch in the first direction, and
the first and second heads are disposed between the first and second correctors in the second direction.

2. The head unit according to claim 1 , wherein
the first corrector is configured to apply a force toward the second side to adjust the angle of the first head.

3. A liquid ejecting apparatus comprising the head unit according to claim 1 and the base.

4. The head unit according to claim 2 , wherein the second corrector is configured to apply a force toward the first side to adjust the angle of the second head.

5. The head unit according to claim 4 , wherein the first and second correctors have substantially the same shape.

6. The head unit according to claim 1 , wherein the base comprises a side surface configured to contact with the first corrector and another side surface configured to contact with the second corrector.

7. The head unit according to claim 6 , wherein the side surfaces extend in the first direction.

8. The head unit according to claim 1 , further comprising:
a third head fixed to the base, the third head comprising a nozzle array extended in the first direction, the third head configured to print continual dot with the second head; and
a third corrector configured to rotate and adjust an angle of the third head with respect to the base, the third corrector disposed at the first side in the second direction with respect to the third head, wherein
the third head is configured to print third dots with the dot pitch in the first direction,
the first, second and third dots are configured to form a line with the dot pitch in the first direction,
the first, second and third heads are disposed between the first and second correctors in the second direction, and
the first, second and third heads are disposed between the third and second correctors in the second direction.

9. The head unit according to claim 1 , wherein each of the first and second heads has nozzle arrays each configured to eject a different color ink.

10. The head unit according to claim 1 , wherein the base comprises a first and a second reference surfaces spaced apart from each other in the second direction,
wherein the first reference surface is configured to contact with the first corrector, and
the second reference surface is configured to contact with the second corrector.

11. The head unit according to claim 8 , wherein the base comprises a first and a second reference surfaces spaced apart from each other in the second direction,
wherein the first reference surface is configured to contact with the first and third correctors, and
the second reference surface is configured to contact with the second corrector.

12. The head unit according to claim 1 , wherein the first corrector is disposed within a range corresponding to a length of the nozzle array of the first head in the first direction, and
the second corrector is disposed within a range corresponding to a length of the nozzle array of the second head in the first direction.

Assignees

• Seiko Epson Corp

Inventors

• Akahane Fujio

Classifications

• B41J2/145

  Arrangement thereof · CPC title

• B41J2/2135 Primary

  Alignment of dots · CPC title

• B41J2/1433 Primary

  Structure of nozzle plates · CPC title