Sheet registration calibration
AssigneeXerox Corporation
InventorRichard M. Dastin
Life of this patent
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Abstract
A method of calibrating registration of a sheet with a sheet gripper on a moving transport. The sheet gripper is adapted to move the sheet in a recirculating path in a printing machine. Movement of the sheet gripper and sheet is timed from a reference time until each reaches a loading zone. The times are compared to a preselected time and the movement of the sheet gripper and sheet adjusted to correspond to the preselected time. In this way, the sheet and sheet gripper arrive at the loading zone simultaneously.
Claims16
A method of calibrating sheet registration with a sheet gripper on a transport, including the steps of:
- timing the movement of the sheet gripper moving with the transport from a first reference position until the sheet gripper arrives at a predetermined location in a loading zone to determine a first time;
- adjusting the movement of the sheet transport so that the first time is preselected time;
- timing the movement of the sheet from a second reference position until the sheet arrives at the predetermined location in the loading zone to determine a second time;
- and
- adjusting the movement of the sheet so that the second time is the preselected time so that the sheet and the sheet gripper arrive at the loading zone substantially simultaneously.
A method of calibrating registration of a sheet gripper on a moving transport with a sheet adapted to be transported by the sheet gripper in a recirculating path in a printing machine to receive a plurality of different color toner images thereon to form a multicolor image, including the steps of:
- timing the movement of the sheet gripper moving with the transport from a first reference position until the sheet gripper arrives at a predetermined location in a loading zone to determine a first time;
- adjusting the movement of the sheet transport so that the first time is preselected time;
- timing the movement of the sheet from a second reference position until the sheet arrives at the predetermined location in the loading zone to determine a second time;
- and
- adjusting the movement of the sheet so that the second time is the preselected time so that the sheet and the sheet gripper arrive at the loading zone substantially simultaneously.
Dependencies are inferred from the claim text.