Fluid cartridges and fluid amount detection systems

Details Fluid cartridges and fluid amount detection systems Fluid cartridges and fluid amount detection systems

2011-01-18

2011-01-18

Vo, Anh T. N. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

07871155

ABSTRACT:
A fluid cartridge includes a fluid container, with the fluid container having a fluid chamber configured to store a fluid, a first passage configured to supply a fluid from an interior of the fluid chamber to an exterior, a first flexible sheet portion with first and second surfaces, and a second flexible sheet portion with third and fourth surfaces. The first flexible sheet portion deforms when a pressure difference is greater than or equal to a first value, and the second flexible sheet portion deforms when a pressure difference is greater than or equal to a second value. The fluid cartridge may also be used in a fluid amount detection system, with a light emitting portion, and a light receiving portion, where the second flexible sheet reflects light so that the reflected light reaches the light receiving portion.

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European Patent Office; European Search Report in Application No. 07011143.0 (counterpart to the above-captioned U.S. patent application) mailed Sep. 14, 2009.
European Search Report Received on Oct. 1, 2007, in corresponding European Patent Application No. EP 07011143.0.

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