Motor control for an automatic document conveying apparatus

Details Motor control for an automatic document conveying apparatus Motor control for an automatic document conveying apparatus

1991-09-30

1993-02-02

Grimley, A. T.

Photocopying

Contact printing

Light boxes

271256, 355309, G03G 1500 F

Patent

active

051841860

ABSTRACT:
An automatic document conveying apparatus and method for use with an image forming device such as a photocopying machine. The apparatus comprises a document feeder for feeding documents into the apparatus, a document conveyor for conveying documents to a copying position on the photocopying machine, and a document reconveyor section for re-conveying documents back to the copying position and also for conveying documents out of the apparatus. The apparatus further comprises a controller for controlling operation of the feeder, conveyor and reconveyor. The controller controls the feeding motor which drives the document feeder and the conveying motor which drives the document conveyor such that the feeding motor is driven during operation while the conveying motor is turned OFF and ON. Hence, rush current travels to the conveying motor during on/off operation and not to the feeding motor during continuous ON operation thus reducing the load imposed on the power supply and eliminating the need for a delay time between starting of the respective motors.

REFERENCES:
patent: 3751158 (1973-08-01), Komori
patent: 3893662 (1975-07-01), Boyd
patent: 4066255 (1978-01-01), Bradbury
patent: 4169674 (1979-10-01), Russel
patent: 4372668 (1983-02-01), Malachowski et al.
patent: 4492455 (1985-01-01), Kawai
patent: 4864365 (1989-09-01), Ito
patent: 5027162 (1991-06-01), Kida et al.

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