Dampener roller apparatus

Details Dampener roller apparatus Dampener roller apparatus

1986-02-19

1988-07-26

Fisher, J. Reed

Printing

Planographic

Dampeners

B41L 2318, B41F 726

Patent

active

047592842

ABSTRACT:
A dampener roller cartridge for mounting on a cylindrical support comprising a core tube having a central bore to receive the cylindrical support, the core tube being characterized by having an annular wall thickness of at least one-third the radius of the tube, and a coherent network structure providing a density of less than 0.5, the plastic substance and the network structure providing the tube with sufficient resilience to be resiliently deformed by a radially applied force by a mating roller and to recover its original shape after the cessation of the radially applied force, and further providing the core tube with sufficient rigidity to permit tight slidable mounting of the core tube on the cylindrical support, and a moisture-absorbent, outer sleeve secured about the circumference of the core tube. Also disclosed are securing a fabric sleeve to a core tube by heat-shrinking and double-sided adhesive tape near the ends of the core tube to prevent axial and circumferential slippage of the sleeve; and an assembly for supporting a dampener roller cartridge on a support cylinder between two end caps, one of which is held against the support cylinder via threaded axial connectors.

REFERENCES:
patent: 2543507 (1951-02-01), Rancourt
patent: 2966723 (1961-01-01), Swope
patent: 2966724 (1961-01-01), Swope
patent: 3919754 (1975-11-01), Sorresso
patent: 3926701 (1975-12-01), Nishiwaki
patent: 4589338 (1986-05-01), Collins et al.

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