Platen-type printer having a drum with shoulders

Details Platen-type printer having a drum with shoulders Platen-type printer having a drum with shoulders

1994-09-29

1996-12-10

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Record receiver driving means

346138, B41J 11057, B41J 1310, B41J 1318

Patent

active

055835562

ABSTRACT:
A printer includes a drum rotated to transport a paper sheet together with and at the periphery of the drum, at least one guide roller disposed at the periphery of the drum and rotated while in contact with the drum to guide the paper sheet against the drum, and a printing device for printing image data on the paper sheet. A shoulder is formed at each side of the drum for guiding the sides of the paper sheet so that the paper sheet is transported between the shoulders. In the above printer, it is possible to print an image on the paper sheet without causing any margins in the upper and lower portions of the paper sheet and without any skewing of the image on the paper sheet, thereby preventing wasted paper. Also, the paper sheet can be brought into contact with the drum with a simple structure, thereby reducing the manufacturing cost of the printer.

REFERENCES:
patent: 4847633 (1989-07-01), Piatt et al.
patent: 5166705 (1992-11-01), Roh

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