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(11) | EP 2 279 871 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Ink cartridge, set of ink cartridges, and ink cartridge determination system |
(57) An ink cartridge includes a first signal blocking portion configured to selectively
prevent a first signal from passing therethrough or to alter a path of the first signal.
The ink cartridge also includes a second signal blocking portion configured to selectively
prevent a second signal from passing therethrough or to alter a path of the second
signal. The second signal blocking portion has a thickness determinative of whether
the second signal blocking portion prevents the second signal from passing therethrough
or alters the path of the second signal at a time that the first signal blocking portion
initially prevents the first signal from passing therethrough or alters the path of
the first signal.
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