Automatic duplex recording apparatus having detectors for contro

Details Automatic duplex recording apparatus having detectors for contro Automatic duplex recording apparatus having detectors for contro

1991-05-13

1992-10-13

Grimley, A. T.

Photocopying

Contact printing

Light boxes

271 31, 355321, G03G 2100

Patent

active

051555409

ABSTRACT:
In an automatic two-sided copying apparatus, a recording sheet which has a toner image on its one side is reversed by an automatic duplex unit and the recording sheet is fed from the automatic duplex unit to be copied on its second side. The apparatus is provided with a feeding state detector which detects number of recording sheets set by an operator to be copied, have been conveyed from the sheet feeding section in the main body. A refeeding state detector which detects that refeeding of at least one of the stacked recording sheets in the automatic duplex unit is possible. A timing controller which receives detection outputs from both the feeding state detector and the refeeding state detector initiates the start of refeeding from the automatic duplex unit.

REFERENCES:
patent: 4437756 (1984-03-01), Kawakubo et al.
patent: 4745439 (1988-05-01), Hanada et al.
patent: 4853740 (1989-08-01), Ushio et al.
European Search Report.

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