Ink amount detecting device and recording apparatus provided wit

Details Ink amount detecting device and recording apparatus provided wit Ink amount detecting device and recording apparatus provided wit

1997-04-07

2000-01-11

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

73291, 116227, B41S 2195

Patent

active

060127953

ABSTRACT:
An ink detecting device capable of detecting the amount of ink in an ink tank uses a light emitting device to shine light toward a transparent member in a wall of the ink tank. The ink tank is used in a recording apparatus and is moved relative to a recording medium as a recording head ejects ink onto the recording medium A light receiving member receives light reflected on an inner surface of the transparent member when ink is not in contact with that surface. However, if ink is in contact with the inner surface, no light is reflected to the light receiving member. Thus, a reliable indication of the presence of ink in a movable ink tank, or plural movable ink tanks, can be obtained in the absence of physical contact therewith.

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