IP Library Granted Patent US 7,467,846
Granted Patent B2
US 7,467,846 · App. 11/482,955 · Granted Dec 23, 2008

Printhead maintenance system comprising face flooding system and ink transport assembly

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Quick Facts
Patent No.
US 7,467,846
App. No.
11/482,955
Granted
Dec 23, 2008
Kind
B2
Abstract

A printhead maintenance system for maintaining a printhead in an operable condition is provided. The maintenance system comprises: (a) a printhead having an ink ejection face; (b) an ink supply system comprising a face flooding system for flooding ink from the printhead onto the face; and (c) an ink transport assembly comprising: a transfer surface for receiving flooded ink from the face and a transport mechanism for feeding the transfer surface through a transfer zone and away from the printhead. The transfer zone is adjacent to and spaced apart from the face.

Claims (14)

1. A printhead maintenance system for maintaining a printhead in an operable condition, said maintenance system comprising:

(a) a printhead having an ink ejection face;

(b) an ink supply system comprising a face flooding system for flooding ink from said printhead onto said face; and

(c) an ink transport assembly comprising:

a transfer surface for receiving flooded ink from said face; and

a transport mechanism for feeding said transfer surface through a transfer zone and away from said printhead,

wherein said transfer zone is adjacent to and spaced apart from said face, and

said transfer surface is an outer surface of a transfer roller which is substantially coextensive with said printhead.

2. The maintenance system of claim 1 , wherein said printhead is a pagewidth inkjet printhead.

3. The maintenance system of claim 1 , wherein said face flooding system comprises a pressure system for positively pressurizing an ink reservoir or an ink conduit supplying ink to said printhead.

4. The maintenance system of claim 3 , wherein said pressure system comprises a control system for controlling an amount and/or a period of pressure applied to said ink reservoir or said ink conduit.

5. The maintenance system of claim 4 , wherein an ink conduit between said ink reservoir and said printhead comprises a valve for controlling an amount of ink flooded onto said face.

6. The maintenance system of claim 1 , wherein said transfer surface is fed through said transfer zone by rotating said roller.

7. The maintenance system of claim 1 , wherein said transfer zone is spaced less than 1 mm from said face.

Assignments (3)
CHANGE OF NAME Recorded Jun 25, 2014
From: ZAMTEC LIMITED
To: MEMJET TECHNOLOGY LIMITED
Reel/Frame 033244/0276 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 17, 2012
From: SILVERBROOK RESEARCH PTY. LIMITED AND CLAMATE PTY LIMITED
To: ZAMTEC LIMITED
Reel/Frame 028569/0875 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2006
From: KARPPINEN, VESA; BULMAN, JONATHAN MARK; SILVERBROOK, KIA
To: SILVERBROOK RESEARCH PTY LTD
Reel/Frame 018049/0903 →