Stalled roll registration system and method employing a ball-on-belt input transport
AssigneeXerox Corporation
InventorLisbeth S. Quesnel
Life of this patent
Estimating the term…
Abstract
A stalled roll registration system and method includes a mechanism that allows for pivoting deskew action in a pre-registration nip. A ball-on-roll pre-registration transport is used in combination with a stalled roll registration nip. Any initial buckle is depleted rapidly as the body of a sheet straightens out at the registration nip under the influence of the ball-on-belt transport. The method includes the steps of providing a registration nip in a sheet path; providing a ball-on-belt sheet transport for directing a sheet towards the registration nip; feeding the sheet into the registration nip with the ball-on-belt transport; and then pivoting the sheet within the ball-on-belt transport in order to register the sheet against the registration nip.
Claims11
An apparatus for registering a sheet in a path, comprising:
- a stalled roll registration nip located in the path, said stalled roll registration nip being adapted to feed a registered sheet downstream for further processing;
- and
- a rotationally compliant input pre-registration transport, and wherein said rotationally compliant input pre-registration transport drives the shoot in a forward direction directly into said stalled roll registration nip and includes at least one ball-on-belt nip that facilitates sheet pivoting therein and is adapted to register a sheet against said stalled roll registration nip without causing a buckle at said stalled roll registration nip.
A printing machine in which a sheet is driven along a path and fed in a timed relationship and registration position to a process station, comprising:
- a stalled roll registration nip located in the path;
- and
- a ball-on-belt input transport that simultaneously drives a lead edge of a sheet in a forward direction while allowing the trailing body of the sheet to move and deskew in accordance with what is happening at the lead edge of the sheet without causing a buckle at said stalled roll registration nip.
A method for registering a sheet transported in a path to a downstream registration location, comprising:
- providing a stalled roll registration nip located in the path;
- providing a ball-on-belt input transport;
- feeding a sheet in a forward direction into said stalled roll registration nip with said ball-on-belt transport without causing a buckle at said stalled roll registration nip;
- and
- pivoting the sheet within said ball-on-belt transport in order to register the sheet against said stalled roll registration nip.
Dependencies are inferred from the claim text.