Cylinder for a printing machine

Details Cylinder for a printing machine Cylinder for a printing machine

1998-08-18

2000-06-20

Royer, William J.

Electrophotography

Image formation

Development

399286, 492 18, 492 47, G03G 1508

Patent

active

060787694

ABSTRACT:
A cylinder (2) for a printing machine, particularly a developing cylinder in an electrographic printing machine, having a rigid, elongated shaft body (10) and a rigid hollow body (11) whose exterior forms the covering and the top and bottom surfaces of the cylinder. In order that, during operation under constant conditions, the cylinder can roll properly against another rigid cylinder of the printing machine, flat sides (12,13) of the hollow body (11) which form the top and bottom surfaces of the cylinder, have centrical bore holes that are larger than the diameter of the shaft body (10) in the area of the flat sides. Located in the space between the shaft body and the flat sides of the hollow body is an elastic material (14,15) which joins the flat sides of the hollow body to the shaft body. Inside the hollow body, in the center between the flat sides of the hollow body one or a plurality of braces (16) are arranged which extend transversely to the figure axis of the shaft body, and which firmly join the hollow cylindrical covering of the hollow body to the shaft body, so that the figure axis of the hollow body and the figure axis of the shaft body coincide in a normal state, and intersect at a small angle under the influence of outer forces.

REFERENCES:
patent: 4974782 (1990-12-01), Nelson
patent: 5289237 (1994-02-01), Hashizume et al.
patent: 5420664 (1995-05-01), Miwa et al.
patent: 5697035 (1997-12-01), Mashtare et al.
patent: 5802443 (1998-09-01), Matsumoto et al.
patent: 5887237 (1999-03-01), Matsumoto et al.
Webster's Ninth Collegiate Dictionary, p 173, copyright 1986.

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