Patent application number | Description | Published |
20080204029 | LED CHAIN FAILURE DETECTION - The system consists of an LED failure detection circuit to provide protection against individual LED catastrophic failure. When LED clusters are arranged in a series-parallel configuration, it is important to detect individual LED failure in order to avoid uncontrolled luminous intensity reduction and/or light uniformity degradation. The circuit compares the voltage levels on LEDs with similar position but situated in different chains. In normal conditions, the voltage levels are substantially similar to one another. In case of individual or multiple LED failure, open or shortcircuit, the circuit sends a signal to the automatic turn off circuit that initiates the lamp forced turn off sequence. | 08-28-2008 |
20090267796 | APPARATUS AND METHOD FOR REDUCING FAILURES IN TRAFFIC SIGNALS - An apparatus and method for testing an independent monitoring circuit in an LED traffic signal is provided. The apparatus comprises: a proof test circuit embedded within the traffic signal; and a proof test device embedded within the traffic signal. The method comprises: via the proof test circuit, simulating a faulty traffic signal state; activating the independent monitoring circuit without switching the traffic signal into a high impedance state; energizing the proof test device; and via the proof test device, communicating externally the current state of the independent monitoring circuit. | 10-29-2009 |
20100149785 | AUTOMATED DE-ICING SYSTEM FOR LOW POWER LIGHTING APPARATUS - An automated de-icing system for a low power lighting device having a light emitting face. The system includes one or more detectors for detecting conditions under which ice, frost or snow are likely to occur on the light emitting face. The system further includes a heat transfer system for transferring heat to the light emitting face and a controller for receiving data from the detector(s) and determining a likelihood of ice, frost or snow forming on the light emitting face. The controller engages the heat transfer system if the likelihood of ice, frost or snow forming on the light emitting face exceeds a threshold. | 06-17-2010 |
Patent application number | Description | Published |
20100196682 | METHOD FOR PAPER TREATMENT - A surface treatment method of oil contaminated xerographic prints which increases the surface energy of the print to levels close to the values corresponding to the original uncontaminated paper. Subjecting the contaminated surface to both ultraviolet (UV) radiation and ozone can change the chemical structure of the surface of the paper in such a way that a highly polar surface is created as a consequence of this treatment, leading to enhanced adhesion properties of the xerographic print. | 08-05-2010 |
20100202807 | TECHNIQUE AND SYSTEM FOR REDUCING CONTAMINATION BUILD-UP ON FUSER ROLL BY REDUCTION OF STATIC CHARGE BUILD-UP IN IGEN3 FUSER SUBSYSTEM - A method and system for reducing contamination build-up within a fuser roll system are disclosed. The method and system includes a donor roll in rotational combination with a fuser roll. The donor roll can be configured to transfer a toner release agent to the fuser roll to reduce toner build-up on the surface of the fuser roll. A grounded static brush can be located proximate to the donor roll. The grounded static brush can be configured to inductively remove electrostatic discharge from the surface of the donor roll. The reduced electrostatic reduces contamination build-up on the fuser roll, and therefore increases the cycle life of the components of the fuser roll system. | 08-12-2010 |
20120244469 | TUNABLE GLOSS USING AEROGEL CERAMIC FILLERS ADDED TO VITON COATINGS FOR FUSING APPLICATIONS - Exemplary embodiments provide materials, methods, and systems for a fuser member used in electrophotographic devices and processes, wherein the fuser member can include a coating material containing a plurality of aerogel fillers dispersed in and/or bonded to a polymer matrix for providing a desired gloss level of fused toner images. | 09-27-2012 |
20130071911 | METHOD FOR PAPER TREATMENT WITH ENZYME - Exemplary embodiments provide methods for treating a xerographic printed substrate with an enzyme solution to increase the surface free energy of the substrate. Other exemplary embodiments provide methods for making an adhesive medium with an enzyme-treated substrate. | 03-21-2013 |
20130071912 | METHODS AND APPARATUS OF CONTROLLING SURFACE WETTABILITY OF XEROGRAPHIC PRINTS - Exemplary embodiments provide methods and apparatus of using an enzyme-surfactant solution to control surface wettability of a xerographic print. | 03-21-2013 |
Patent application number | Description | Published |
20090123864 | Ultra Low Melt Toners Comprised of Crystalline Resins - A toner having an amorphous resin, a crystalline resin, and a colorant, wherein the crystalline resin has a melting temperature of at least 70° C. and a recrystallization point of at least 47° C. exhibits improved document offset properties and improved heat cohesion. Annealing the toner further improves the heat cohesion and morphology of the toner. | 05-14-2009 |
20100284714 | REDUCTION OF CONTAMINATION ON IMAGE MEMBERS BY UV OZONE TREATMENT - Exemplary embodiments provide a method and a system that can include a combined UV radiation and ozone treatment for reducing contamination built-up on surfaces of image members within a printing system. | 11-11-2010 |
20120156481 | FUSER MEMBER AND COMPOSITION - The present teachings provide a fuser member. The fuser includes a layer of a siloxyfluorocarbon networked polymer. | 06-21-2012 |
20120157277 | FUSER MEMBER - The present teachings provide a fuser member. The fuser member includes an outer layer comprising a composite of a fluoropolymer and a networked siloxyfluorocarbon polymer. | 06-21-2012 |
20120245251 | SURFACE COATING AND FUSER MEMBER - The present teachings disclose a surface coating. The surface coating includes a fluoroplastic having dispersed therein aerogel particles wherein the aerogel particles comprise from about 0.1 weight percent to about 25 weight percent of the surface coating. The surface coating is useful as an out layer for fuser members. | 09-27-2012 |
20120282003 | FUSER MEMBER - The present teachings provide a fuser system member including a substrate and a topcoat layer disposed over the substrate. The topcoat layer comprises a fluoroelastomer cross-linked with amino silane wherein the topcoat is substantially free of copper oxide. A mercapto-functionalized oil is disposed on the topcoat layer. | 11-08-2012 |
20130270179 | POLYIMIDE MEMBRANES - There is provided a membrane that includes a plurality of polyimide fibers encased in a fluoropolymer sheath, the plurality of fibers having a diameter of from about 10 nm to about 50 microns, wherein the plurality of fibers form a permeable non-woven mat. A method of manufacturing the membrane is provided. | 10-17-2013 |