Method for automatically correcting transfer pressure non-uniformity using the cross process uniformity
AssigneeXerox Corporation
InventorsJohn R. Falvo, Eliud Robles-Flores, David B Montfort
Life of this patent
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Abstract
An electrophotographic marking apparatus and an automatic method for automatically scanning and correcting TAB pressure non-uniformity using a cross-process uniformity controller and a closed loop system. The TAB is contacted with an image on a photoreceptor surface to leave its imprint or footprint on the image, which are analyzed for TAB performance and pressure. This method uses a CPUC full width array in conjunction with a software version for assessing TAB performance. This method continuously monitors the TAB performance during the running of a marking apparatus.
Claims14
An automatic system for capturing and correcting pressure of a Transfer Assist Blade (TAB) in an electrophotographic marking apparatus, the system comprising:
- a TAB petal of said TAB, the TAB being configured for being automatically applied to an imaged photoreceptor while the apparatus is printing for forming a petal profile or footprint by allowing said petal to imprint a pattern onto an image on the surface of said imaged photoreceptor, said petal profile extending along a width of said image;
- a Cross Process Uniformity Controller (CPUC) sensor for scanning said petal profile or footprint for identifying TAB pressure image conditions, said CPUC sensor being in electrical contact with a system controller for automatically decoding said petal profile or footprint for re-adjusting pressure and correcting said TAB.
A method for automatically correcting TAB pressure in an electrophotographic marking apparatus using a Cross Process Uniformity Controller (CPUC), the method comprising:
- forming a control developed toner image on a photoreceptor surface of said apparatus;
- causing a TAB petal of a TAB to contact said developed toner image on said surface whereby a TAB pressure of said contact forms a footprint image or profile in said toner image
- detecting said footprint image on said toner image with a CPUC sensor, said sensor being connected to a CPUC controller;
- decoding said footprint image using said CPUC controller to produce footprint data of said TAB device;
- and
- re-adjusting or replacing said TAB after producing said footprint data based on said footprint image detected by said CPUC sensor.
Dependencies are inferred from the claim text.