Drag roller device for printing apparatus

Details Drag roller device for printing apparatus Drag roller device for printing apparatus

1991-04-02

1993-10-26

Burr, Edgar S.

Printing

Cleaning attachments

101423, B41F 3500, B41L 4100

Patent

active

052556069

ABSTRACT:
A drag roller device for a printing apparatus comprises a cleaning means for cleaning a drag roller. The cleaning means is in contact with a part of the circumferential surface of the drag roller except for the circumferential area around which a printed continuous sheet fed from a printing section is wound. The cleaning means may be movable within the circumferential area of the drag roller or separable from it. The cleaning means may be supplied with a cleaning liquid.
In the drag roller device thus constructed, the cleaning means can remove various stains and/or spots of ink transferred from the circumferential surface of the drag roller and/or additional rollers at each revolution of the drag roller. This cleaning operation of the cleaning means ensures to prevent the printed surface of the continuous sheet succeedingly fed from damaging with the stains and spots of ink from the drag roller and so on.

REFERENCES:
patent: 3735702 (1973-05-01), Kossak
patent: 4015307 (1977-04-01), Kossak
patent: 4393778 (1983-07-01), Kaneko
patent: 4651644 (1987-03-01), Kaempfe et al.
patent: 4747348 (1988-05-01), Jeschke et al.
patent: 4893562 (1990-01-01), Robertson
patent: 4905593 (1990-03-01), Gollinger et al.
patent: 4919756 (1990-04-01), Sawdai
patent: 4972780 (1990-11-01), Gasparrini et al.
patent: 5010819 (1991-04-01), Uribe et al.
Xerox Disclosure Journal, Magnetic Brush Cleaning System, vol. 2, No. 5, Sep./Oct. 1977.
"Newspaper Printing; Printing Edition Revised Version" published by Nippon Shinbun Oct. 31, 1980, p. 61, left column, lines 21 to 34.

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