Transfer material detecting device

Details Transfer material detecting device Transfer material detecting device

1995-10-13

1997-03-04

Grimley, Arthur T.

Electrophotography

Diagnostics

Document handling

G03G 1516

Patent

active

056085044

ABSTRACT:
A transfer material detecting device contains a transfer material carrier that detachably carries a transfer material to transport the transfer material to a transfer region where a toner image of an image carrier is transferred to the transfer material; and transfer material sensors that are disposed in a moving path of the transfer material carrier and detect the existence of the transfer material carried by the transfer material carrier. The device contains at least two transfer material sensors arranged in a moving direction of the transfer material carrier at intervals that are shorter than the minimum size of the transfer material to be detected; and a device for outputting a transfer material detection signal when at least two of the transfer material sensors simultaneously detect the existence of the transfer material.

REFERENCES:
patent: 3620616 (1971-11-01), Davidson et al.
patent: 4247193 (1981-01-01), Kaneko et al.
patent: 4541711 (1985-09-01), Takahashi
patent: 4935776 (1990-06-01), Fukui
patent: 5043771 (1991-08-01), Shibata et al.
patent: 5049924 (1991-09-01), Moro et al.
patent: 5406358 (1995-04-01), Kimura et al.
patent: 5440382 (1995-08-01), Suga

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