Image-forming apparatus and image-forming method

Typewriting machines – Sheet or web – For feeding sheet from stack or pack holder

Reexamination Certificate

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C399S404000, C399S405000

Reexamination Certificate

active

06877921

ABSTRACT:
The present invention is characterized in that: a demanded printing-job is accepted at a printing-job accepting unit, and a printing executing unit executes printing according to the accepted printing-job so as to produce an output sheet onto a discharge tray; an output-sheet detecting unit detects the presence of a printed output-sheet on the discharge tray; if the removal of discharged sheets from the discharge tray is detected, a printed-sheet mixture determining unit determines the possibility that sheets printed corresponding to a plurality of demands are mixed among the removed output-sheets; and if it is determined the possibility that sheets printed corresponding to a plurality of the demands are mixed among the output-sheets, warning information is produced by a warning voice producing unit.

REFERENCES:
patent: 5848346 (1998-12-01), Takashiro
patent: 5897250 (1999-04-01), Hirai et al.
patent: 6227531 (2001-05-01), Guerrero et al.
patent: 10278391 (1998-10-01), None

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