Photoreceptor end of life predictor
First Claim
1. A method for predicting the end of life of an electrophotographic imaging member from a population of imaging members comprising the steps of:
- a) recording samples at a discrete time interval for a property of the electrophotographic imaging member;
b) determining a relationship between the recorded samples and a function corresponding to the population of imaging members; and
c) predicting the end of life of the electrophotographic imaging member in response to said determining step.
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Accused Products
Abstract
An improved method and apparatus for predicting the end of life of a photoreceptor, first records sampled data, then processes the data in order to interpolate the photoreceptor'"'"'s end of life. Increased prediction accuracy is realized since both global photoreceptor information concerning a population of photoreceptors as well as information directed to a specific photoreceptor operating under particular environmental conditions are taken into account. This information is used not only to predict photoreceptor end of life but to make adjustments in the printing machine to correct xerographic degradations. In one embodiment, the information is used to direct an embedded end of life predictions system for notifying service at a remote site of photoreceptor problems in the printing machine in such a manner that it is transparent to a user of the printing machine. An alternative embodiment of the invention provides real time feedback to a service requests for the condition of a photoreceptor within a printing machine.
26 Citations
21 Claims
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1. A method for predicting the end of life of an electrophotographic imaging member from a population of imaging members comprising the steps of:
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a) recording samples at a discrete time interval for a property of the electrophotographic imaging member; b) determining a relationship between the recorded samples and a function corresponding to the population of imaging members; and c) predicting the end of life of the electrophotographic imaging member in response to said determining step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrophotographic printing machine of the type having an imaging member selected from a population of imaging members, comprising:
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a) means for recording samples at a discrete time interval for a property of the imaging member; b) means, associated with said recording means, for determining a relationship between the recorded samples and a function corresponding to the population of imaging members; and c) means, associated with said determining means, for predicting the end of life of the electrophotographic imaging member from the determined relationship. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification