Printing apparatus capable of handling paper size error

Details Printing apparatus capable of handling paper size error Printing apparatus capable of handling paper size error

2009-04-28

2011-11-01

Karmis, Stefanos (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C271S265010, C271S265020

Reexamination Certificate

active

08047542

ABSTRACT:
In a printing apparatus, even when the measured paper size differs from the scheduled size, it is possible to reduce the frequency of requiring a recovery procedure, and prevent the productivity from decreasing by continuing the operation of the printing apparatus as much as possible. The printing apparatus includes a paper feeding unit for feeding a print sheet from a paper feed tray120, 130a, 130b, 130cor130dto a transportation route CR through a paper feed route FR, in-tray sensors182, 183a, 183b. . . for measuring the paper size in the paper feed trays; a transportation sensor181for measuring the paper size on the transportation route, a transportation operation adjusting unit332for adjusting the transportation operation on the transportation or paper feed route according to the measurement result of the transportation sensor181when the measurement results of the transportation sensor181and in-tray sensors mismatch.

REFERENCES:
patent: 4579444 (1986-04-01), Pinckney et al.
patent: 5467182 (1995-11-01), Hower et al.
patent: 5689795 (1997-11-01), Mastrandrea
patent: 5839015 (1998-11-01), Faguy et al.
patent: 6247695 (2001-06-01), Linder et al.
patent: 11-65370 (1999-03-01), None

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