Image forming apparatus having a plurality of sensors for detect

Details Image forming apparatus having a plurality of sensors for detect Image forming apparatus having a plurality of sensors for detect

1996-06-13

1997-07-29

Ramirez, Nestor R.

Electrophotography

Diagnostics

Document handling

399 45, 399389, G03G 2100

Patent

active

056529430

ABSTRACT:
An image forming apparatus of the invention includes: a sheet-type determining device which determines whether the fed sheet is of plain paper or of OHP film; a first timer which sets up the arrival timing of the sheet for the high-speed mode; a second timer which sets up the arrival timing of the sheet for the low-speed mode; a selecting device which selects the first timer when the type of the sheet determined by the sheet-type determining device is plain paper and selects the second timer in the case of OHP film; and a warning device which, if in either of the modes, the sheet does not reach a predetermined site within the predetermined arrival time, determines that the sheet has jammed and informs the user of the point of jamming.

REFERENCES:
patent: 5138392 (1992-08-01), Kinoshita et al.
patent: 5282001 (1994-01-01), Watson

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