US 2019/0143551 A1 · MEDIUM END-DETECTING DEVICE

Abstract

To properly detect an end of a colored medium. A cutting device 1 includes a light emission unit, a light receiving sensor configured to receive light emitted from the light emission unit at a position facing the light emission unit, a platen configured to support a colored medium S between the light emission unit and the light receiving sensor, and a paper end detection mechanism configured to detect an end of the colored medium S on the platen. The light receiving sensor is freely movable. The degree of light reception by the light receiving sensor is switched for the light from the light emission unit by movement of the light receiving sensor, and in this manner, the paper end detection mechanism detects the end of the colored medium S in a movement direction of the light receiving sensor.

Claims11

Dependent claims

A medium end-detecting device comprising:

a light emitter configured to emit light;
a light receiver arranged at a position facing the light emitter and configured to receive the light emitted from the light emitter;
a support member configured to support a colored medium between the light emitter and the light receiver;
and
a detection mechanism configured to detect an end of the colored medium supported by the support member, wherein
one of the light emitter and the light receiver is freely movable, and
a degree of light reception by the light receiver is switched for the light emitted from the light emitter by movement of the one of the light emitter and the light receiver, and in this manner, the detection mechanism detects the end of the colored medium in a movement direction of the one of the light emitter and the light receiver.

4 more elements

Dependencies are inferred from the claim text.

Medium end-detecting device

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Medium end-detecting device

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Abstract

Claims11