1996-03-14
1997-10-21
Coles, Sr., Edward L.
395116, G06K 1500
Patent
active
056805225
ABSTRACT:
A printer system comprising a host including a page buffer for storing bit map data for one page or more and a printer including a controller, a receiving buffer for temporarily storing the bit map data sent from the page buffer, a band buffer for temporarily storing line unit data for several lines in a main scanning direction, a paper conveyer, an image forming section, and a sensor for detecting the paper passing through a predetermined position which is downstream in a paper conveying direction from the image forming section. Immediately after the one-line printing process is conducted, the line unit data used for the one-line printing process are erased from the band buffer, the bit map data used for the one-line printing process are erased from the receiving buffer, but the bit map data stored in the page buffer continues to be kept. If the controller judges that a paper jam has occurred on the basis of a signal sent from the sensor, the bit map data of the jammed page kept in the page buffer are sent again to the receiving buffer.
REFERENCES:
patent: 4586147 (1986-04-01), Tadokoro
patent: 4860119 (1989-08-01), Maniwa et al.
patent: 5018081 (1991-05-01), Yamaguchi et al.
patent: 5210823 (1993-05-01), Moroi
patent: 5220645 (1993-06-01), Nakajima
patent: 5467435 (1995-11-01), Douglas et al.
Coles Sr. Edward L.
Oki Data Corporation
Popovici Dov
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