Incremental printing of symbolic information – Ink jet – Controller
Patent
1996-05-09
1997-11-18
Hartary, Joseph W.
Incremental printing of symbolic information
Ink jet
Controller
73293, 250577, B41J 2175
Patent
active
056892900
ABSTRACT:
A liquid level detecting mechanism for detecting the liquid level in a vessel for storage of liquid, includes a light emitting unit and a light receiving unit disposed opposite to the vessel for storage of liquid or a chamber communicating with the vessel. The light receiving unit detects the liquid level in the vessel in accordance with the quantity of received light from the light emitted from the light emitting unit, and members in contact with liquid which are arranged between the light emitting unit and the light receiving unit, the members being formed of a material having high wettability relative to the liquid.
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Ikeda Yasuhiko
Okubo Akio
Saito Atsushi
Canon Kabushiki Kaisha
Hartary Joseph W.
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