# US 10,870,279 B2 · Method of manufacturing liquid supply unit

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- Number: US 10,870,279 B2
- Document ID: US10870279B2
- Status: Granted
- Kind: B2
- Application number: 15/806,700
- Filed: 2017-11-08
- Published: 2018-05-24
- Granted: 2020-12-22
- Earliest claimed: 2016-11-24
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Soji Kondo; Yukuo Yamaguchi; Toshiaki Hirosawa; Hiromasa Amma; Takuya Iwano; Noriyasu Nagai
- Web page: https://patentgrep.com/patent/US10870279B2

## CPC

- B41J 2/1637: {molding}
- B41J 2/14088: {Structure of heating means}
- B41J 2/14145: {Structure of the manifold}
- B41J 2/1603: {of the front shooter type}
- B41J 2/1623: {bonding and adhesion}
- B29C 45/02: Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
- B29C 45/04: using movable moulds {or mould halves}(B29C45/08 takes precedence)
- B29C 45/0408: {involving at least a linear movement (B29C45/0433 takes precedence)}
- B29C 45/1635: {using displaceable mould parts, e.g. retractable partition between adjacent mould cavities}
- B29C 45/32: having several axially spaced mould cavities {, i.e. for making several separated articles}
- B41J 2202/12: with ink circulating through the whole print head
- B41J 2202/19: Assembling head units
- B41J 2202/21: Line printing
- Y10T 29/49401: Fluid pattern dispersing device making, e.g., ink jet
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method of manufacturing a liquid supply unit includes a first molding step and a second molding step. In a first molding step, a resin is injected into different positions inside a mold assembly and a first member having a first contact portion, a second member having a second contact portion and an intermediate passage member having a passage structure to connect the first contact portion to the second contact portion are molded. In a second molding step, the mold assembly is disassembled, a die slide mold disposed inside the mold assembly is moved for positioning the members. Then, the mold assembly is clamped again and a resin is injected into the mold assembly. The first contact portion and the second contact portion are respectively held on the same surfaces inside the mold assembly during a period from the first molding step to completion of the second molding step.

## Claims

### Claim 1

A method of manufacturing a liquid supply unit configured to supply a liquid to a liquid ejecting head, comprising:
a first molding step of injecting a first resin into different positions inside a fixed mold and a movable mold, in a state of clamping the fixed mold and the movable mold, which is detachable from the fixed mold in a first direction, to mold, at the different positions, respectively, a first member including a first contact portion to be connected to another component, a second member including a second contact portion to be connected to still another component, and an intermediate passage member to be located between the first member and the second member and including a passage structure to connect the first contact portion to the second contact portion; and
a second molding step of bonding the first member, the second member, and the intermediate passage member to one another by detaching the movable mold in the first direction from the fixed mold after the first molding step, moving a die slide mold disposed inside the movable mold in a second direction different from the first direction to perform positioning among the first member, the second member, and the intermediate passage member in the second direction, clamping the fixed mold and the movable mold, and injecting a second resin into the fixed mold and the movable mold,
wherein the first contact portion and the second contact portion are respectively held on same surfaces inside the fixed mold or the die slide mold during a period from the first molding step to completion of the second molding step,
wherein each of the first member and the second member has a flat plate shape,
wherein the liquid ejecting head is a full-line type inkjet printing head for printing an image on a printing medium,
wherein a plurality of first contact portions are provided to the first member, and
wherein a plurality of second contact portions are provided to the second member.

### Claim 2 (depends on 1)

The method according to claim 1,
wherein the first member and the second member have a width equal to a width of the liquid ejecting head.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the inkjet printing head is capable of ejecting inks of a plurality of colors, and
wherein the passage structure of the intermediate passage member is prepared corresponding to each of the inks of the plurality of colors.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the intermediate passage member includes:
a base portion provided substantially parallel to the first member and the second member; and
ribs projecting from the base portion and coming into contact with the first member and the second member, respectively, and
wherein a thickness of the base portion is smaller than a thickness of each of the ribs.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the first resin is compatible with the second resin.