Ink jet recording apparatus

Patent metadata

Field	Value
Publication number	US-9895890-B2
Application number	US-201715681579-A
Country	US
Kind code	B2
Filing date	Aug 21, 2017
Priority date	Mar 11, 2015
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

There is provided an ink jet recording apparatus that can correct bending of an ink jet head with a compact structure. First supporting frames 122 that support ink jet heads 110 C, 110 M, 110 Y, and 110 K and second supporting frames 170 that support a part of ink supply sections supplying ink to the ink jet heads 110 C, 110 M, 110 Y, and 110 K are mounted on a mount 300. The first supporting frames 122 are mounted on the mount 300 while both end portions of the first supporting frames 122 in a longitudinal direction are supported. Each of the second supporting frames 170 is provided with a bending correction mechanism 340 that applies a pressing force to the first supporting frame 122 to correct the bending of the first supporting frame 122.

First claim

What is claimed is:

1. An ink jet recording apparatus comprising:
a plurality of recording units each of which comprises a long ink jet head and an ink supply section supplying ink to the ink jet head;
a plurality of supporting frames each of which comprises a first supporting frame supporting the ink jet head and a second supporting frame supporting at least a part of the ink supply section;
a mount that comprises a plurality of first supporting frame supports supporting both ends of the first supporting frames in a longitudinal direction and a plurality of second supporting frame supports supporting the second supporting frames; and
a bending correction unit that are provided on the second supporting frames and apply pressing forces or tensile forces to at least a part of the first supporting frames to correct bending of the first supporting frames in a case in which the first supporting frames are supported by the first supporting frame supports.

2. The ink jet recording apparatus according to claim 1 ,
wherein the ink jet head includes a plurality of joined head modules.

3. The ink jet recording apparatus according to claim 2 ,
wherein the first supporting frame supports are arranged in the shape of an arc along an arc-shaped transport path of a medium that is transported along the transport path.

4. The ink jet recording apparatus according to claim 3 ,
wherein the bending correction unit comprise springs, and apply pressing forces or tensile forces, which are generated by the springs, to the first supporting frames.

5. The ink jet recording apparatus according to claim 3 ,
wherein the bending correction unit comprise first springs each of which pulls one end of the first supporting frame in a lateral direction and second springs each of which pulls the other end of the first supporting frame in the lateral direction.

6. The ink jet recording apparatus according to claim 2 ,
wherein the first and second supporting frames of the supporting frame are connected to each other by a connecting member.

7. The ink jet recording apparatus according to claim 2 ,
wherein the bending correction unit comprise springs, and apply pressing forces or tensile forces, which are generated by the springs, to the first supporting frames.

8. The ink jet recording apparatus according to claim 2 ,
wherein the bending correction unit comprise first springs each of which pulls one end of the first supporting frame in a lateral direction and second springs each of which pulls the other end of the first supporting frame in the lateral direction.

9. The ink jet recording apparatus according to claim 2 ,
wherein the bending correction unit apply tensile forces to the first supporting frames of the supporting frames that are adjacently disposed.

10. The ink jet recording apparatus according to claim 1 ,
wherein the first supporting frame supports are arranged in the shape of an arc along an arc-shaped transport path of a medium that is transported along the transport path.

11. The ink jet recording apparatus according to claim 10 ,
wherein the first and second supporting frames of the supporting frame are connected to each other by a connecting member.

12. The ink jet recording apparatus according to claim 10 ,
wherein the bending correction unit comprise springs, and apply pressing forces or tensile forces, which are generated by the springs, to the first supporting frames.

13. The ink jet recording apparatus according to claim 10 ,
wherein the bending correction unit comprise first springs each of which pulls one end of the first supporting frame in a lateral direction and second springs each of which pulls the other end of the first supporting frame in the lateral direction.

14. The ink jet recording apparatus according to claim 1 ,
wherein the first and second supporting frames of the supporting frame are connected to each other by a connecting member.

15. The ink jet recording apparatus according to claim 1 ,
wherein the bending correction unit comprise springs, and apply pressing forces or tensile forces, which are generated by the springs, to the first supporting frames.

16. The ink jet recording apparatus according to claim 15 ,
wherein the bending correction unit further comprise levers, and apply pressing forces or tensile forces, which are generated by the springs, to the first supporting frames through the levers.

17. The ink jet recording apparatus according to claim 1 ,
wherein the bending correction unit comprise first springs each of which pulls one end of the first supporting frame in a lateral direction and second springs each of which pulls the other end of the first supporting frame in the lateral direction.

18. The ink jet recording apparatus according to claim 1 ,
wherein the bending correction unit apply tensile forces to the first supporting frames of the supporting frames that are adjacently disposed.

19. The ink jet recording apparatus according to claim 1 ,
wherein the first and second supporting frames of the supporting frames are arranged in series in an ink jetting direction of the ink jet head supported by the first supporting frame.

20. The ink jet recording apparatus according to claim 1 , further comprising:
a carriage on which the mount is mounted.

Assignees

• Fujifilm Corp

Inventors

• Koga Takehiko
• Kusakari Tsutomu

Classifications

• B41J2202/20

  Modules · CPC title

• B41J2025/008

  comprising a plurality of print heads placed around a drum · CPC title

• B41J2202/21

  Line printing · CPC title

• B41J2202/14

  Mounting head into the printer · CPC title

• B41J2/1752

  Mounting within the printer · CPC title