Liquid ejecting apparatus and liquid ejecting head

Patent metadata

Field	Value
Publication number	US-11260654-B2
Application number	US-202016907956-A
Country	US
Kind code	B2
Filing date	Jun 22, 2020
Priority date	Jun 24, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

The controller controls ejection of liquid such that the first and second nozzles eject liquid at the same timing and the first and third nozzles eject liquid at different timings.

First claim

What is claimed is:

1. A liquid ejecting apparatus, comprising:
a first nozzle line including a plurality of nozzles ejecting liquid arranged in a first direction;
a second nozzle line including a plurality of nozzles ejecting liquid arranged in the first direction;
a moving mechanism configured to move at least the first and second nozzle lines or a recording medium in a second direction diagonally intersecting with the first direction; and
a controller configured to control ejection of liquid such that the liquid is ejected from the first and second nozzle lines while the movement is performed by the moving mechanism, wherein
the first nozzle line includes a first nozzle,
the second nozzle line includes a second nozzle positioned the same as the first nozzle in the second direction,
the first nozzle line includes a third nozzle positioned different from the first nozzle in the first direction, and
the controller controls ejection of liquid such that the first nozzle ejects liquid at a first timing to form a first dot, the second nozzle ejects liquid at the first timing to form a second dot, and the first and third nozzles eject liquid at a second timing that is different from the first timing to form a third dot,
the liquid ejecting apparatus further comprising:
a first latch circuit configured to control a first energy generation element corresponding to the first nozzle and a second energy generation element corresponding to the second nozzle based on a latch signal, and
a second latch circuit, which is different from the first latch circuit, configured to control a third energy generation element corresponding to the third nozzle based on a latch signal.

2. The liquid ejecting apparatus according to claim 1 , wherein
the second nozzle line includes a fourth nozzle positioned different from the second nozzle in the first direction and the same as the third nozzle in the second direction, and
the controller controls ejection of liquid such that the third nozzle and the fourth nozzle eject liquid at the same timing.

3. The liquid ejecting apparatus according to claim 1 , wherein
the plurality of nozzles included in the first nozzle line communicate with a first common liquid chamber storing liquid, and
the plurality of nozzles included in the second nozzle line communicate with a second common liquid chamber storing liquid which is different from the first chamber.

4. The liquid ejecting apparatus according to claim 1 , wherein
the liquid is ink of red, blue, or green.

5. The liquid ejecting apparatus according to claim 1 , wherein
the recording medium is divided into a plurality of regions by a frame member, and
the controller controls ejection of liquid such that the liquid is ejected to regions in which the frame member is not formed.

6. The liquid ejecting apparatus according to claim 1 , wherein
the first nozzle and the third nozzle are adjoined to each other in the first nozzle line.

7. The liquid ejecting apparatus according to claim 1 , wherein
the controller controls ejection of liquid such that the first and third nozzles do not eject liquid at the same timing.

8. The liquid ejecting apparatus according to claim 1 , wherein
the controller controls ejection of liquid such that a position of the first dot in the second direction, a position of the second dot in the second direction, and a position of the third dot in the second direction are the same position.

9. A liquid ejecting head, comprising:
a first nozzle line including a plurality of nozzles ejecting liquid arranged in a first direction;
a second nozzle line including a plurality of nozzles ejecting liquid arranged in the first direction;
a first energy generation element corresponding to a first nozzle included in the first nozzle line;
a second energy generation element corresponding to a second nozzle which is included in the second nozzle line and which is positioned the same as the first nozzle in a second direction diagonally intersecting with the first direction;
a third energy generation element corresponding to a third nozzle which is included in the first nozzle line and which is positioned different from the first nozzle in the first direction;
a first latch circuit configured to control the first energy generation element and the second energy generation element based on a latch signal; and
a second latch circuit, which is different from the first latch circuit, configured to control the third energy generation element based on a latch signal.

10. A liquid ejecting apparatus, comprising:
the liquid ejecting head according to claim 9 ; and
a controller configured to control ejection of liquid from the liquid ejecting head.

11. The liquid ejecting head according to claim 9 , further comprising
a fourth energy generation element corresponding to a fourth nozzle which is included in the second nozzle line and which is positioned different from the second nozzle in the first direction and the same as the third nozzle in the second direction, and
the second latch circuit further control the fourth energy generation element based on the latch signal.

12. The liquid ejecting head according to claim 9 , wherein
the plurality of nozzles included in the first nozzle line communicate with a first common liquid chamber storing liquid, and
the plurality of nozzles included in the second nozzle line communicate with a second common liquid chamber storing liquid which is different from the first chamber.

13. The liquid ejecting head according to claim 9 , wherein
the first nozzle and the third nozzle are adjoined to each other in the first nozzle line.

14. The liquid ejecting head according to claim 9 , wherein
the liquid is ink of red, blue, or green.

Assignees

• Seiko Epson Corp

Inventors

• Uchida Kazuaki
• Fukuda Shunya
• Sano Junichi

Classifications

• B41J2/04588

  using a specific waveform · CPC title

• B41J2/04581

  controlling heads based on piezoelectric elements · CPC title

• B41J2/155

  for line printing · CPC title

• B41J2/04541 Primary

  Specific driving circuit · CPC title

• B41J2/14201

  Structure of print heads with piezoelectric elements · CPC title