Metering roller control apparatus

Details Metering roller control apparatus Metering roller control apparatus

1990-04-18

1991-06-11

Crowder, Clifford D.

Printing

Planographic

Dampeners

118259, 101350, B41F 740

Patent

active

050223224

ABSTRACT:
A metering roller engages a liquid pickup roller to meter liquid through the nip therebetween. A stationary shaft through the middle of the metering roller carries spaced bearings at adjustable locations engaging the inside of the roller. A fulcrum is provided to support the stationary shaft near each end thereof. A forcing cam spaced inwardly from each fulcrum has an adjustable pivot point, and is forced into engagement with the stationary shaft to produce bending moments in the shaft transmitted to the roller through the bearings to bias the metering roller toward the metering nip. The position of each fulcrum may be adjusted in two directions, and the magnitude of the bending moments adjusted by moving the forcing cam pivot point.

REFERENCES:
patent: 3647525 (1972-03-01), Dahlgren
patent: 4428291 (1984-01-01), Dorow
patent: 4524690 (1985-06-01), Omori
patent: 4671175 (1987-06-01), Zimmer et al.
patent: 4741269 (1988-05-01), Aylor et al.
patent: 4848228 (1989-07-01), Svoboda et al.
patent: 4949637 (1990-08-01), Keller

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