# US 10,864,740 B2 · Fluid interconnection for bulk ink supply

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- Number: US 10,864,740 B2
- Document ID: US10864740B2
- Status: Granted
- Kind: B2
- Application number: 16/423,659
- Filed: 2019-05-28
- Published: 2019-09-12
- Granted: 2020-12-15
- Earliest claimed: 2014-09-12
- Assignees: Funai Electric Co., Ltd.
- Applicants: Funai Electric Co., Ltd.
- Inventors: Steven R. Komplin
- Web page: https://patentgrep.com/patent/US10864740B2

## CPC

- B41J 2/17523: {Ink connection}
- B41J 2/175: Ink supply systems {; Circuit parts therefor}
- B41J 2/17509: {Whilst mounted in the printer}
- B41J 2/17513: {Inner structure}
- B41J 2/17553: {Outer structure}
- B41J 2/17556: {Means for regulating the pressure in the cartridge}
- B41J 2/17506: {Refilling of the cartridge}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A fluid interconnect system including a mating component having an inlet port and a liquid outlet, the inlet port configured to support an interconnector and the liquid outlet configured to engage with a print cartridge so that liquid flows from a liquid source, through the interconnector and the inlet port, and out of the liquid outlet into the print cartridge.

## Claims

### Claim 1

A printhead, comprising:
a cartridge body;
a bladder comprising a frame member and a first connecting tube, the bladder disposed within the cartridge body;
a lid disposed over the cartridge body; and
a fluid interconnect assembly, comprising:
a mating component forming an interface between the cartridge body and an external ink supply; and
a fluid interconnector releasably supported by the mating component, the fluid interconnector comprising a second tube that transfers a fluid into the bladder from the external ink supply; and
a printhead chip disposed on the cartridge body and in fluid communication with the bladder that receives the fluid from the bladder,
wherein the second tube connects directly over the first connecting tube within the cartridge body through an inner channel in the mating component on one end and to the external ink supply on another end.

### Claim 2 (depends on 1)

The printhead of claim 1, wherein the frame member of the bladder comprises a cavity, a flexible sidewall, and a spring member disposed between the frame member cavity and the flexible sidewall, the spring member engaged with the frame member cavity and the sidewall to bias the flexible sidewall away from the frame member to cause a vacuum pressure to form within the bladder.

### Claim 3 (depends on 2)

The printhead of claim 2, further comprising a spring guard disposed between the flexible sidewall and the spring member.

### Claim 4 (depends on 1)

The printhead of claim 1, wherein the mating component separably engages an opening in the cartridge body and is fixed to the cartridge body by the lid.

### Claim 5 (depends on 1)

The printhead of claim 1, wherein the second tube comprises a valve that regulates the flow of the fluid into the bladder.

### Claim 6

A fluid interconnect assembly, comprising:
an interconnector coupled to an external ink supply, the interconnector comprising a tube that transfers a fluid into a bladder of a print cartridge from the external ink supply; and
a mating component separably fixed to the print cartridge that releasably supports the interconnector,
wherein, within the print cartridge, the tube connects directly over a connecting tube extending from the bladder through an inner channel in the mating component on one end and to the external ink supply on another end.

### Claim 7 (depends on 6)

The fluid interconnect assembly of claim 6, wherein the mating component comprises a fluid connection element that protrudes outward from the print cartridge and that concentrically engages with the interconnector.

### Claim 8 (depends on 6)

The fluid interconnect assembly of claim 6, wherein the mating component separably engages an opening in the print cartridge and is fixed to the print cartridge by a lid.

### Claim 9 (depends on 6)

The fluid interconnect assembly of claim 6, wherein the tube comprises a valve to control the flow of the fluid into the print cartridge.