FLOW PASSAGE ASSEMBLY AND METHOD FOR MANUFACTURING FLOW PASSAGE ASSEMBLY, INKJET RECORDING HEAD, AND RECORDING APPARATUS

• US 20120293588A1
• Filed: 05/04/2012
• Published: 11/22/2012
• Est. Priority Date: 05/16/2011
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Shimamura, Ryo, Shibata, Takeshi, Yamamoto, Akira, Hirosawa, Toshiaki, Tajima, Hiroki
• Granted Patent: US 8,801,156 B2
• Time in Patent Office: Days
• US Class Current: 347/84
• CPC Class Codes: B29C 65/08 using ultrasonic vibrations non-plastics element to plastics elements B29C65/645
• CPC Class Codes: B29C 66/124 Tongue and groove joints
• CPC Class Codes: B29C 66/242 said joint lines being closed, i.e. forming closed contours
• CPC Class Codes: B29C 66/244 said joint lines being non-straight, e.g. forming non-closed contours
• CPC Class Codes: B29C 66/30223 said melt initiators being rib-like
• CPC Class Codes: B29C 66/543 joining more than two hollow-preforms to form said hollow articles
• CPC Class Codes: B29C 66/73921 characterised by the materials of both parts being thermoplastics
• CPC Class Codes: B29C 66/8322 Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29L 2031/7678 Ink or toner cartridges
• CPC Class Codes: B41J 2/14024 Assembling head parts
• CPC Class Codes: B41J 2/14145 Structure of the manifold
• CPC Class Codes: B41J 2/1604 of the edge shooter type
• CPC Class Codes: B41J 2/1623 bonding and adhesion
• CPC Class Codes: B41J 2/17513 Inner structure
• CPC Class Codes: B41J 2/17553 Outer structure
• CPC Class Codes: B41J 2/17563 Ink filters
• CPC Class Codes: B41J 2/18 Ink recirculation systems
• CPC Class Codes: B41J 2002/14403 including a filter
• CPC Class Codes: B41J 2202/12 with ink circulating through the whole print head
• CPC Class Codes: B41J 2202/20 Modules

Abstract

A method for manufacturing a flow passage assembly includes forming a first flow passage in a first joint interface formed by welding a first surface of a first flow passage forming member to a first surface of a second flow passage forming member using an ultrasonic welding process, and forming, after the first flow passage is formed, a second flow passage in a second joint interface formed by welding a first surface of a third flow passage forming member to one of a second surface of the first flow passage forming member and a second surface of the second flow passage forming member using an ultrasonic welding process. A total area of weld portions used when the first flow passage is formed is greater than a total area of weld portions used when the second flow passage is formed.

Claims

1. A method for manufacturing a flow passage assembly, comprising:

forming a first flow passage in a first joint interface formed by welding a first surface of a first flow passage forming member to a first surface of a second flow passage forming member using an ultrasonic welding process; and

forming, after the first flow passage is formed, a second flow passage in a second joint interface formed by welding a first surface of a third flow passage forming member to one of a second surface of the first flow passage forming member and a second surface of the second flow passage forming member using an ultrasonic welding process,

wherein a total area of weld portions used when the first flow passage is formed is greater than a total area of weld portions used when the second flow passage is formed.

3. The method for manufacturing a flow passage assembly according to claim 1, wherein an ultrasonic energy used when welding is performed for forming the first flow passage is higher than an ultrasonic energy used when welding is performed for forming the second flow passage.

5. The method for manufacturing a flow passage assembly according to claim 1, wherein one of the two flow passage forming members that form each of the first joint interface and the second joint interface has a protruding welding rib formed thereon, and wherein the welding rib is welded using the ultrasonic welding process.

6. The method for manufacturing a flow passage assembly according to claim 5, wherein a volume of the welding rib located in the first joint interface is greater than a volume of the welding rib located in the second joint interface.

7. The method for manufacturing a flow passage assembly according to claim 5, wherein an apex angle of a top end of the welding rib located in the first joint interface is greater than an apex angle of a top end of the welding rib located in the second joint interface.

2. A method for manufacturing a flow passage assembly, comprising:

forming a first flow passage in a first joint interface formed by welding a first surface of a first flow passage forming member to a first surface of a second flow passage forming member using an ultrasonic welding process; and

forming, after the first flow passage is formed, a second flow passage in a second joint interface formed by welding a first surface of a third flow passage forming member to one of a second surface of the first flow passage forming member and a second surface of the second flow passage forming member using an ultrasonic welding process,

wherein an area per unit length of a weld portion used when the first flow passage is formed is greater than an area per unit length of a weld portion used when the second flow passage is formed.

4. The method for manufacturing a flow passage assembly according to claim 2, wherein a period of time during which ultrasonic waves are emitted for welding the weld joint per unit length of the first flow passage is longer than a period of time during which ultrasonic waves are emitted for welding the weld joint per unit length of the second flow passage.

8. A flow passage assembly comprising:

a first flow passage forming member;

a second flow passage forming member joined to the first flow passage forming member using an ultrasonic welding process, the second flow passage forming member having at least one first flow passage in a first joint interface formed between a first surface of the first flow passage forming member and a first surface of the second flow passage forming member; and

a third flow passage forming member joined to a second surface of the second flow passage forming member opposite to the first joint interface using an ultrasonic welding process, the third flow passage forming member having at least one second flow passage in a second joint interface formed between the second surface of the second flow passage forming member and the third flow passage forming member;

wherein a total area of weld portions used when the first flow passage is formed is greater than a total area of weld portions used when the second flow passage is formed.

10. The flow passage assembly according to claim 8, further comprising:

a recording head disposed on a second surface of the first flow passage forming member, the recording head ejects a liquid.

12. The flow passage assembly according to claim 8, wherein the number of the first flow passages is greater than the number of the second flow passages.

9. A flow passage assembly comprising:

a first flow passage forming member;

a second flow passage forming member joined to the first flow passage forming member using an ultrasonic welding process, the second flow passage forming member having at least one first flow passage in a first joint interface between a first surface of the first flow passage forming member and a first surface of the second flow passage forming member; and

a third flow passage forming member joined to a second surface of the second flow passage forming member using an ultrasonic welding process, the third flow passage forming member having at least one second flow passage in a second joint interface formed between the second surface of the second flow passage forming member and the third flow passage forming member;

wherein an area per unit length of a weld portion generated when the first flow passage is formed is greater than an area per unit length of a weld portion generated when the second flow passage is formed.

11. The flow passage assembly according to claim 9, further comprising:

a recording head disposed on a second surface of the first flow passage forming member, the recording head ejects a liquid.

13. The flow passage assembly according to claim 9, wherein the number of the first flow passages is greater than the number of the second flow passages.