Anti-ghosting roller
AssigneeQuad/Graphics, Inc.
InventorsFrederick A. Voeltner, Nicholas R. Schetter
Life of this patent
Estimating the term…
Abstract
An anti-ghosting roller having a main shaft, an inner race detachably mounted on the main shaft, a rotary bearing having movable bearing elements (e.g., needle bearings) positioned on the inner race, a roller core secured to the rotary bearing, and an end collar mounted to the shaft and spaced from an end of the roller core such that the roller core can both rotate and axially oscillate relative to the main shaft. The inner race extends beyond the end of the rotary bearing. An end collar is mounted to the end of the shaft. The end collar includes a spacer portion extending axially toward the roller core. The spacer portion is radially spaced from the main shaft so that it is free from interaction with the inner race.
Claims26
An offset printing press comprising:
- a blanket cylinder;
- a plate cylinder in operative association with said blanket cylinder;
- and
- an anti-ghosting roller in operative association with said plate cylinder, said anti-ghosting roller including:
- a main shaft;
- an inner race mounted on said main shaft;
- a rotary bearing having movable bearing elements positioned on said inner race, said bearing elements being rotationally and axially movable relative to said inner race;
- and
- a roller core connected to said rotary bearing.
An offset printing press comprising:
- a blanket cylinder;
- a plate cylinder in operative association with said blanket cylinder;
- and
- an anti-ghosting roller in operative association with said plate cylinder, said anti-ghosting roller including:
- a main shaft;
- an inner race secured to said main shaft;
- and
- a roller core mounted for rotation and for axial oscillation relative to said inner race, said inner race extending beyond an end of said roller core.
An anti-ghosting roller for use on an offset printing press, said roller comprising:
- a main shaft;
- an inner race mounted on said main shaft;
- a rotary bearing having movable bearing elements positioned on said inner race, said bearing elements being rotationally and axially movable relative to said inner race;
- and
- a roller core connected to said rotary bearing.
An offset printing press comprising:
- a blanket cylinder;
- a plate cylinder in operative association with said blanket cylinder;
- and
- an anti-ghosting roller in operative association with said plate cylinder, said anti-ghosting roller including:
- a main shaft comprising non-hardened steel;
- an inner race mounted on said main shaft;
- a rotary bearing having movable bearing elements positioned on said inner race;
- and
- a roller core secured to said rotary bearing.
An offset printing press comprising:
- a blanket cylinder;
- a plate cylinder in operative association with said blanket cylinder;
- and
- an anti-ghosting roller in operative association with said plate cylinder, said anti-ghosting roller including:
- a main shaft comprising non-hardened steel;
- an inner race secured to said main shaft;
- and
- a roller core mounted for rotation relative to said inner race, said inner race extending beyond an end of said roller core.
An anti-ghosting roller for use on an offset printing press, said roller comprising:
- a main shaft comprising non-hardened steel;
- an inner race mounted on said main shaft;
- a rotary bearing having movable bearing elements positioned on said inner race;
- and
- a roller core secured to said rotary bearing.
Dependencies are inferred from the claim text.