Print cartridge assembly with media drive for a mobile handset

• US 7,796,304 B2
• Filed: 01/31/2008
• Issued: 09/14/2010
• Est. Priority Date: 05/09/2005
• Status: Expired due to Fees

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia
• Primary Examiner(s): Vo; Anh T. N.
• Application Number:
  US12/023,815
• Publication Number:
  US 20080117241A1
• Time in Patent Office: 957 Days
• Field of Search: 347/2, 347/29, 347/86, 347/87, 347/109, 358/1.15, 358/473, 379/428.01, 379/433.01, 455/344, 455346-347, 4553501-351, 455/556.1, 455/557, 455/575.1
• US Class Current: 358/473
• CPC Class Codes: B41J 2/17513 Inner structure

Abstract

The invention provides for a print cartridge assembly for a mobile handset. The assembly includes a chassis defining a number of slots for operatively receiving ink bearing structures therein, the chassis also defining a plurality of tortuous ink paths for supplying ink from the ink bearing structures to a printhead integrated circuit mounted to said chassis. The assembly also includes a media drive shaft mounted to said chassis, the shaft configured to operatively move print media past the printhead integrated circuit, as well as power and data contacts defined on said housing, the contacts in signal communication with the printhead integrated circuit to facilitate supply of power and data signals from a controller of the mobile handset to the integrated circuit.

Claims

1. A print cartridge assembly for a mobile handset, the assembly comprising:

a chassis defining a number of slots for operatively receiving ink bearing structures therein, the chassis defining a plurality of tortuous ink paths for supplying ink from the ink bearing structures to a printhead integrated circuit mounted to said chassis;

a media drive shaft mounted to said chassis;

a resilient surface for engaging the sheets of media substrate, the resilient surface configured to be inclined to the print media path when the print cartridge assembly is installed into the mobile handset such that a leading edge of each of the sheets of media substrate is guided to the drive shaft as the sheet of media substrate slides over the resilient surface such that during printing the sheets of media substrate slides are biased by spring fingers against the drive shaft; and

power and data contacts defined on said chassis, the contacts in signal communication with the printhead integrated circuit to facilitate supply of power and data signals from a controller of the mobile handset to the integrated circuit.

2. The print cartridge assembly of claim 1, which includes a capper attached to the chassis for operatively enclosing and protecting the printhead integrated circuit.

3. The print cartridge assembly of claim 1, wherein the ink bearing structures are selected from a group consisting of:

foam, a fibre and perforated membrane laminate, foam and a perforated membrane laminate, a folded perforated membrane, and sponge wrapped in a perforated membrane.

4. The print cartridge assembly of claim 1, which includes a lid to seal the slots of the chassis, said lid having ink holes to allow the slots to be filled with ink during manufacture, with the lid defining breather holes therein to allow pressure equalization within said slots when the cartridge is in use.

5. The print cartridge assembly of claim 4, wherein ink baffles depend from an underside of the lid to extend into the slots of the chassis to impede ink from accelerating in said slots.

6. The print cartridge assembly of claim 1, wherein the printhead integrated circuit is mounted to the chassis by a polymer sealing film which is laser drilled so that ink in the ink paths is able to flow to the printhead integrated circuit.

7. The print cartridge assembly of claim 1, wherein the tortuous ink paths are shaped and dimensioned to always retain ink therein via capillary action regardless of whether or not the cartridge is in an upright orientation.