Material sensing method and apparatus determining material type based on temperature
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United States of America Patent
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Mar 8, 2005
Grant Date -
Dec 4, 2003
app pub date -
May 15, 2003
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A material sensing apparatus detects the material (type) of an object, e.g., a recording medium, using a heat source which heats at least a portion of an object, a temperature sensor which measures the temperature of a portion of the object, a memory element which stores data on the relationship between temperature and type of object, and a determination element which determines the type of the object based on the measurement result of the temperature sensor and the data in the memory element. The temperature sensor measures the temperature of a portion of the object at a predetermined distance from the portion heated by the heat source.
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