Conveyance apparatus, control method therefor, and printing...

Sheet feeding or delivering – Feeding – By means to convey sheet

Reexamination Certificate

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C347S101000, C700S213000, C271S264000

Reexamination Certificate

active

07597322

ABSTRACT:
A conveyance apparatus increases the conveyance precision of a conveyance unit. The conveyance apparatus has first and second conveyance rollers. The conveyance apparatus includes a DC motor serving as a driving source for the conveyance rollers, a first encoder which outputs a first pulse signal in accordance with rotation of the first conveyance roller, a second encoder which outputs a second pulse signal in accordance with rotation of the second conveyance roller, and a control unit having a first mode in which the DC motor is controlled based on first information about the first pulse signal when executing a conveyance operation to convey a sheet by using the first and second conveyance rollers, and a second mode in which the DC motor is controlled based on second information about the second pulse signal when executing a conveyance operation to convey a sheet by using the second conveyance roller.

REFERENCES:
patent: 7290763 (2007-11-01), Suzuki et al.
patent: 7401913 (2008-07-01), Nishiberi et al.
patent: 7415239 (2008-08-01), Saito et al.
patent: 2004/0183846 (2004-09-01), Kunihiro
patent: 2007/0007711 (2007-01-01), Suzuki et al.
patent: 2007/0031175 (2007-02-01), Takeda et al.
patent: 2008/0006994 (2008-01-01), Otani et al.
patent: 2009/0066018 (2009-03-01), Iesaki et al.
patent: 2004-127182 (2004-08-01), None
patent: 2004-230817 (2004-08-01), None

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