# US 7,744,191 B2 · Flexible printhead module incorporating staggered rows of ink ejection nozzles

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- Number: US 7,744,191 B2
- Document ID: US7744191B2
- Status: Granted
- Kind: B2
- Application number: 11/852,986
- Filed: 2007-09-10
- Published: 2008-01-03
- Granted: 2010-06-29
- Earliest claimed: 2002-11-23
- Assignees: Silverbrook Research Pty Ltd
- Inventors: Kia Silverbrook
- Web page: https://patentgrep.com/patent/US7744191B2

## CPC

- B41J 2/155: for line printing
- B41J 2/1404: {Geometrical characteristics}
- B41J 2/1412: {Shape}
- B41J 2/1601: {Production of bubble jet print heads (B41J2/1606, B41J2/162 take precedence)}
- B41J 2/1603: {of the front shooter type}
- B41J 2/1623: {bonding and adhesion}
- B41J 2/1626: {etching}
- B41J 2/1628: {dry etching}
- B41J 2/1631: {photolithography}
- B41J 2/1639: {sacrificial molding}
- B41J 2/1642: {thin film formation by CVD [chemical vapor deposition]}
- B41J 2002/14475: {characterised by nozzle shapes or number of orifices per chamber}
- B41J 2002/14491: {Electrical connection}
- B41J 2202/20: Modules
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A printhead module assembly includes a printhead integrated circuit (IC) assembly. The printhead IC assembly includes a plurality of ink ejection nozzles arranged to form staggered rows. The printhead IC assembly defines a plurality of ink channels for supplying ink to the ink ejection nozzles. A flexible printed circuit board (PCB) is electrically connected to supply both power and data to the IC assembly. A support sheet defines a plurality of ink holes. The IC assembly is bonded to the support sheet so that the ink channels are aligned with the ink holes.

## Claims

### Claim 1

A printhead module assembly comprising:
a printhead integrated circuit (IC) assembly having a plurality of ink ejection nozzles arranged to form staggered rows, and defining a plurality of ink channels for supplying ink to the ink ejection nozzles;
a flexible printed circuit board (PCB) electrically connected to supply both power and data to the IC assembly; and
a support sheet defining a plurality of ink holes and to which the IC assembly is bonded so that the ink channels are aligned with the ink holes.

### Claim 2 (depends on 1)

A printhead module assembly as claimed in claim 1, wherein the support sheet defines a plurality of ink distribution channels extending from the ink holes.

### Claim 3 (depends on 2)

A printhead module assembly as claimed in claim 2, in which another support sheet is mounted to the aforementioned support sheet and defines other ink holes which align with respective ones of the ink distribution channels.

### Claim 4 (depends on 3)

A printhead module assembly as claimed in claim 3, wherein the support sheets each further define a plurality of air holes which are aligned.