Device and method for registering multiple led bar imagers in an image-on-image system
AssigneeXerox Corporation
InventorKiri Amarakoon
Life of this patent
Estimating the term…
Abstract
A metnod and apparatus adjusting the lateral position of an LED bar may minimize image banding in image-on-image systems having multiple LED bar imagers. A photoreceptor may be transported past a plurality of marking stations. At each marking station an LED bar imager extends in a direction perpendicular to the direction of transport of the medium. A mark may be sensed at each station and the lateral position of the LED bar, perpendicular to the direction of transport of the medium, may be adjusted according to the deviation of the position of the mark from a desired position.
Claims20
An LED bar image registering device, comprising:
- an LED bar including an array of LEDs disposed thereon, the LED bar configured to mount generally perpendicular to a direction of movement of a photoreceptor medium of an image-on-image apparatus, the LED bar being arranged to move in a direction substantially transverse to the direction of movement of the photoreceptor medium;
- and
- a sensor mounted on the LED bar, the sensor providing an output and configured to detect a position of a reference mark disposed on the medium as the medium passes the sensor;
- wherein the movement of the LED bar is determined by a deviation of the detected position of the reference mark from a predetermined position.
A Xerographic apparatus, comprising;
- a photoreceptor medium moveably mounted in the apparatus, the photoreceptor medium having a reference mark, the photoreceptor medium moveable in a first direction;
- at least one LED bar having a movement in a second direction transverse to the first direction.
A method of registering an LED bar in a Xerographic device, comprising:
- moving a photoreceptor medium along a first direction of movement past at least one LED bar having an array of LEDs, the photoreceptor medium having a reference line imparted thereon in the first direction;
- detecting a deviation of the reference line from a predetermined point along the LED bar;
- and
- moving the LED bar in the second direction in accordance with the detected deviation.
Dependencies are inferred from the claim text.