Inkjet printhead having recessed transverse ribs across fluid channel

Patent metadata

Field	Value
Publication number	US-10071562-B2
Application number	US-201715583205-A
Country	US
Kind code	B2
Filing date	May 1, 2017
Priority date	May 2, 2016
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

An inkjet printhead includes: an elongate fluid manifold comprising at least one longitudinally extending channel, the fluid manifold having a base defining a plurality of ink outlets, the fluid outlets being spaced apart longitudinally along a floor of the channel; a plurality of printhead chips bonded to the base of the fluid manifold, each printhead chip receiving ink from one or more fluid outlets; and a plurality of transverse ribs positioned across the channel, each transverse rib extending upwardly from the floor of the channel. One or more of the transverse ribs has a recess allowing fluid flow along the floor of the channel between the transverse ribs.

First claim

The invention claimed is:

1. An inkjet printhead comprising:
an elongate fluid manifold comprising at least one longitudinally extending channel, the fluid manifold having a base defining a plurality of fluid outlets, the fluid outlets being spaced apart longitudinally along a floor of the channel;
a plurality of printhead chips bonded to the base of the fluid manifold, each printhead chip receiving ink from one or more fluid outlets; and
a plurality of transverse ribs positioned across the channel, each transverse rib extending upwardly from the floor of the channel, wherein one or more of the transverse ribs has a recess allowing fluid flow along the floor of the channel between the transverse ribs.

2. The inkjet printhead of claim 1 , wherein the fluid manifold comprises an upper part and a lower part, the upper and lower parts cooperating to define the channel.

3. The inkjet printhead of claim 2 , wherein the lower part comprises the transverse ribs and the plurality of fluid outlets.

4. The inkjet printhead of claim 2 , wherein the upper part comprises further transverse ribs extending across a roof of the channel.

Assignees

• Memjet Technology Ltd

Inventors

• Jackson Garry
• Berry Norman
• Hudson Michael
• Brown Brian
• Mallinson Samuel
• Mcbain Geordie

Classifications

• B41J2/14 Primary

  Structure thereof {only for on-demand ink jet heads} · CPC title

• B41J2/17553

  Outer structure · CPC title

• B41J2/19 Primary

  for removing air bubbles · CPC title

• B41J2/155

  for line printing · CPC title

• B41J2/045

  by pressure, e.g. electromechanical transducers · CPC title