Optics: measuring and testing – Position or displacement – Position transverse to viewing axis
Reexamination Certificate
2005-06-21
2005-06-21
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
Position or displacement
Position transverse to viewing axis
C347S116000, C347S250000, C399S301000
Reexamination Certificate
active
06909516
ABSTRACT:
A simplified system for sensing the movement and/or position on both axes of a moving surface, such as a photoreceptor belt of a xerographic printer, or a sheet transport of an ink jet printer, utilizing a linear track of small and closely spaced “Z” shaped marks on or in a moving belt or roller surface. These marks are used to accurately incrementally directly detect surface motions in both orthogonal axes with a co-linear optical sensor linear array of a multiplicity of individual pixel optical detectors which respectively detect and compare the changes in positions relative thereto of the transverse and angled lines of those Z marks during frequent short measurement intervals. This exemplary system provides direct, and thus more accurate, surface movement measurement information, with much less critical and less costly marking requirements, and greater tolerance for variations in the subject surface, as compared to indirect or conventional encoder type positional sensors.
REFERENCES:
patent: 4912491 (1990-03-01), Hoshino et al.
patent: 5208796 (1993-05-01), Wong et al.
patent: 5278625 (1994-01-01), Charnitski et al.
patent: 5300961 (1994-04-01), Corona et al.
patent: 5302973 (1994-04-01), Costanza et al.
patent: 5381165 (1995-01-01), Lofthus et al.
patent: 5383014 (1995-01-01), Nowak et al.
patent: 5654951 (1997-08-01), Hoover et al.
patent: 5808658 (1998-09-01), Hoover
patent: 5815481 (1998-09-01), Hou et al.
patent: 5889545 (1999-03-01), Rauch et al.
patent: 6128459 (2000-10-01), Iwata et al.
patent: 6275244 (2001-08-01), Omelchenko et al.
patent: 6369842 (2002-04-01), Abramsohn
Nguyen Sang H.
Toatley , Jr. Gregory J.
Xerox Corporation
LandOfFree
Two dimensional surface motion sensing system using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two dimensional surface motion sensing system using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two dimensional surface motion sensing system using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3473439