Apparatus which detects the thickness of a sheet of paper...

Details Apparatus which detects the thickness of a sheet of paper... Apparatus which detects the thickness of a sheet of paper...

2008-01-29

2008-01-29

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

C324S207160, C271S265040

Reexamination Certificate

active

07323867

ABSTRACT:
A thickness detecting apparatus comprises a printed board in a part of which a coil is patterned, a detection roller which is disposed near the coil, which detects thickness of a sheet P of paper as a displacement amount, and a thickness detection circuit mounted on the surface of the printed board, which supplies a high frequency signal to the coil via a wiring pattern formed on the surface of the printed board and detects the amplitude of the high frequency signal which changes according to the displacement amount of the detection roller as a thickness of the sheet P of paper.

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