Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 28, 2010
Patent Application Number
12356052
Date Filed
January 19, 2009
Patent Primary Examiner
Patent abstract
Magnetic force lines 51 are generated in the direction from a first limited portion 52 of an inside peripheral face 50a of a ribbon-delivering cylindrical core 50 toward an opposing second limited portion 54. A first magnet is fixed at the first limited portion: a second magnet is fixed at the opposing second limited portion. With the ink ribbon cassette 40 set in a main body of a printer 10, a magnetic sensor 24 takes the position in the middle of the inside of the ribbon-delivery core 50, and detects the magnetic force line 51.
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