Resources Contact Us Home
Belt position sensing for image registration

Image Number 5 for United States Patent #5208633.

In an imaging device having a belt supporting image on an image supporting surface and moving along an endless path in a process direction, an exposure device for forming images on the image supporting surface, an arrangement is provided to derive information about belt position with respect to the exposure device. The belt is provided with at least one fiducial opening or target at a belt edge, and a sensor is arranged with respect to the belt and the fiducial opening, to sense illumination directed through the fiducial opening. An illumination source is provided at a fixed position with respect to the exposure device and the sensor to directing illumination to the sensor, when the fiducial opening is aligned with the sensor, including at least two independently detectable illumination sources arranged along a cross process direction. Belt position with respect to the exposure device is then determined from the amount of occlusion of one of the first and second independently detectable illumination sources. Control of belt position may be split between image processing methods and mechanical methods.

  Recently Added Patents
Photovoltaic plant having a plurality of inverters, inverter, USB mass storage device and method for carrying out software updates on inverters
Photolabile dinitroindolinyl based compounds
System and method for monitoring social engineering in a computer network environment
Light-emitting diode
Bis-aryl sulfonamides
Multiple-use dispenser for articles contained in blister-type packages
Source code inspection
  Randomly Featured Patents
Portable phone
Regulation of athletic function with materials derived from citrus varieties
Ultra-miniature fiber-optic pressure sensor system and method of fabrication
Segmented stator assembly
Electric motor with no counter electromotive force
Telecommunication switching system having adaptive routing switching nodes
Electroconductive composition, method for producing electroconductive film, and electroconductive film
Foundation garment strap retainer
Silicone foams
Pneumatic hand tool