Hardcopy printing device with capacitive print media monitor...

Details Hardcopy printing device with capacitive print media monitor... Hardcopy printing device with capacitive print media monitor...

2006-07-04

2006-07-04

Lee, Thomas D. (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001120

Reexamination Certificate

active

07072077

ABSTRACT:
A printing device can include a capacitive monitoring system to monitor the amount of print medium (e.g., paper) available in the printing device. The capacitive monitor includes conductive plates above and below the supply of print medium. With the print medium acting as a dielectric element, the capacitance of the system will change as print medium is removed from the supply. This change in capacitance can be used to monitor the supply of print medium in the printing device.

REFERENCES:
patent: 5168239 (1992-12-01), Winship
patent: 5682184 (1997-10-01), Stephany et al.
patent: 6095629 (2000-08-01), Froger et al.
patent: 6247363 (2001-06-01), Froger et al.
patent: 208377 (1987-01-01), None

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