Sheet feeder
AssigneeXerox Corporation
InventorsThomas Acquaviva, Vittorio Castelli, Joannes deJong
Life of this patent
Estimating the term…
Abstract
A sheet feeder is provided comprising at least two drives that drive a sheet of material along a paper path and at least two sensors that detect a lateral side of the sheet of material. A controller is connected to the two sensors and at least one of the drives. The controller varies the drive velocity of at least one of the drives to shift the lateral position of the sheet of material in a predetermined direction until one of the sensors detects the lateral side and then varies the velocity difference of the two drives to eliminate the skew of the sheet.
Claims14
A sheet feeder comprising:
- at least two drives adapted to drive a sheet of material along a paper path;
- at least two sensors proximate the drives adapted to detect opposite lateral sides of the sheet of material;
- and
- a controller connected to the two sensors and at least one of the drives;
- wherein, the controller varies a drive speed of at least one of the drives to shift a lateral position of the sheet of material in a predetermined direction until one of the sensors detects one of the lateral sides.
A sheet feeder comprising:
- a drive adapted to drive a sheet of material along a paper path;
- at least three sensors proximate the drive, wherein two of the sensors are adapted to detect a skew of the sheet of material, and wherein another two of the sensors are located to detect opposing edges of the sheet of material for detecting a lateral offset of the sheet of material from the paper path;
- and
- a controller connected to the sensors and the drive.
Dependencies are inferred from the claim text.