Coating apparatus and inkjet recording apparatus

Patent metadata

Field	Value
Publication number	US-9321072-B2
Application number	US-201313929471-A
Country	US
Kind code	B2
Filing date	Jun 27, 2013
Priority date	Jul 13, 2012
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

A coating apparatus includes: a coating roller configured to apply coating liquid to a recording medium; a measuring roller configured to intermittently supply the coating liquid to the coating roller by being brought into contact with and being separated from the coating roller; a coating liquid pan configured to stores the coating liquid; and a roller cover configured to cover the measuring roller. When the measuring roller moves between a contact position where the coating roller and the measuring roller come into contact with each other and a separation position where the coating roller and the measuring roller are separated from each other, the measuring roller and the roller cover integrally operate while maintaining their relative positions, in a state where the coating liquid pan is fixed.

First claim

What is claimed is:

1. An inkjet recording apparatus comprising:
a coating apparatus including:
a coating roller configured to apply coating liquid to a recording medium;
a measuring roller configured to intermittently supply the coating liquid to the coating roller by being brought into contact with and being separated from the coating roller;
a coating liquid pan configured to store the coating liquid; and
a roller cover which covers the measuring roller along an entire length direction of the measuring roller and the coating liquid pan and which has an opening portion for bringing the measuring roller into contact with the coating roller,
wherein when the measuring roller moves between a contact position where the coating roller and the measuring roller come into contact with each other and a separation position where the coating roller and the measuring roller are separated from each other, the measuring roller and the roller cover integrally operate while maintaining their relative positions, in a state where the coating liquid pan is fixed, and

an inkjet head configured to record an image by discharging ink onto the recording medium to which the coating liquid is applied by the coating apparatus.

2. The inkjet recording apparatus according to claim 1 , further comprising:
a measuring blade configured to come into contact with the measuring roller along the entire length direction of the measuring roller, thereby scraping away extra coating liquid from the coating liquid drawn up by the measuring roller,
wherein the measuring blade operates integrally with the measuring roller and the roller cover.

3. The inkjet recording apparatus according to claim 2 , wherein the roller cover covers at least a portion of an area from the measuring blade to a contact point between the coating roller and the measuring roller on a downstream side in a rotation direction of the measuring roller.

4. The inkjet recording apparatus according to claim 1 , wherein a first seal member configured to come into contact with the measuring roller is provided on an upstream side in a rotation direction of the measuring roller of the coating liquid pan.

5. The inkjet recording apparatus according to claim 2 , wherein a seal member configured to come into contact with the measuring roller is provided on an upstream side in the rotation direction of the measuring roller of the coating liquid pan.

6. The inkjet recording apparatus according to claim 3 , wherein a seal member configured to come into contact with the measuring roller is provided on an upstream side in the rotation direction of the measuring roller of the coating liquid pan.

7. The inkjet recording apparatus according to claim 1 , wherein the coating liquid pan and the roller cover are connected by a seal member, and
the coating liquid pan and the roller cover are in a connected state when the coating roller and the measuring roller move between the contact position and the separation position.

8. The inkjet recording apparatus according to claim 2 , wherein the coating liquid pan and the roller cover are connected by a seal member, and the coating liquid pan and the roller cover are in a connected state when the coating roller and the measuring roller move between the contact position and the separation position.

9. The inkjet recording apparatus according to claim 3 , wherein the coating liquid pan and the roller cover are connected by a seal member, and
the coating liquid pan and the roller cover are in a connected state when the coating roller and the measuring roller move between the contact position and the separation position.

10. The inkjet recording apparatus according to claim 4 , wherein the coating liquid pan and the roller cover are connected by a second seal member, and
the coating liquid pan and the roller cover are in a connected state when the coating roller and the measuring roller move between the contact position and the separation position.

11. The inkjet recording apparatus according to claim 2 , wherein the measuring blade also serves as the roller cover.

12. The inkjet recording apparatus according to claim 1 , wherein the roller cover has a heat-insulated structure.

13. The inkjet recording apparatus according to claim 12 , wherein the roller cover has an inner surface to which raising treatment is carried out.

14. The inkjet recording apparatus according to claim 1 , wherein a liquid reservoir section is provided at a periphery of the roller cover.

15. The inkjet recording apparatus according to claim 2 , wherein a distance between the measuring blade and a contact point between the measuring roller and the coating roller is in a range of ⅕ to ⅓ of a circumference of the measuring roller.

Assignees

• Fujifilm Corp

Inventors

• Uemura Hiroshi
• Okano Naoya

Classifications

• B05C1/0813 Primary

  characterised by means for supplying liquid or other fluent material to the roller · CPC title

• B05C1/0834

  the coating roller co-operating with other rollers, e.g. dosing, transfer rollers · CPC title

• B05C1/0821

  characterised by driving means for rollers or work · CPC title

• B41J2/2114

  Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence) · CPC title