Machine shutdown control

Details Machine shutdown control Machine shutdown control

1985-09-30

1986-12-09

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3R, 355 3SH, 355 14C, G03G 1500

Patent

active

046277110

ABSTRACT:
The present invention is the controlled shutdown of the preregistration, fuser, dedicated duplex tray, and machine exit zones of the copy sheet handling system of a machine. In particular, a control data base includes a packet phase describing the origin and destination and all specific details of how each individual copy sheet is to move through the system, a tracker phase showing the current physical location of the sheet in the system, wherein both the lead edge and trail edge of each sheet is tracked and dynamically updated at each control point, and a fault phase showing the specific element that has the fault and which edge of the sheet is the fault, and also showing that a fault has been responded to by the system. At the detection of a malfunction or jam, the control evaluates the status of the sheets in the sheet handling system and makes determinations, for example, to hold sheets from entering into the boundary between the preregistraton, fuser, duplex tray, and machine exit zones, or drives a sheet at the boundary into the next zone.

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patent: 4474454 (1984-10-01), Sugiura
patent: 4549805 (1985-10-01), Iimori
patent: 4557587 (1985-12-01), Komiya et al.

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