Patent application number | Description | Published |
20090041517 | RELEASE FLUID ADDITIVES - The presently disclosed embodiments are directed to release fluids or agents that are useful in release coating in toner-based technologies. More particularly, the embodiments pertain to the addition of metal chelating agents to release fluids to prevent byproduct reactions from the fusing process that would otherwise decrease fuser member life and image quality. | 02-12-2009 |
20090129816 | SELF ERASING PHOTORECEPTOR CONTAINING AN ELECTROLUMINESCENT NANOMATERIAL - In accordance with the invention, there are electrophotographic photoreceptors, image forming apparatus and methods of forming an image. The electrophotographic photoreceptor can comprise a conductive layer comprising a plurality of electroluminescent nanomaterials, a first contact electrically connected to a first edge of the conductive layer and an electrical ground, a second contact electrically connected to a second edge of the conductive layer and a D.C. power supply, and a photosensitive layer disposed over the conductive layer, wherein the photosensitive layer comprises a charge generation material and a charge transport material. The D.C. power supply can be configured to supply a lateral voltage bias at the second contact to generate a localized electroluminescence across the conductive layer and deliver an erase illumination from within the electrophotographic photoreceptor. | 05-21-2009 |
20090162761 | OPTICALLY TRANSPARENT SOLVENT COATABLE CARBON NANOTUBE GROUND PLANE - In accordance with the invention, there are xerographic photoreceptors, image forming apparatus, and methods of forming an image on image. The xerographic photoreceptor can include a substrate and a conductive ground plane having an optical transparency disposed over the substrate, the conductive ground plane including a carbon nanotube layer, such that machine cycling of the xerographic photoreceptor can produce less than approximately a 10% change in the optical transparency of the conductive ground plane after about 100,000 or more machine cycles. The xerographic photoreceptor can also include a photosensitive layer disposed over the conductive ground plane, wherein the photosensitive layer can include a charge generator material and a charge transport material. | 06-25-2009 |
20100310272 | TWO-COLOR IOI DRUM MODULE ENABLING N-COLOR MONOCHROME, HIGHLIGHT, FULL COLOR, PHOTOTONE COLOR AND EXTENDED COLOR ARCHITECTURES - A xerographic marking device includes an intermediate transfer unit, a media transport path and at least one two-color image-on-image (IOI) drum module. Each two-color IOI drum module includes in a process order around a photoreceptor; a) a first charging unit; b) a first exposure unit; c) a first development unit; d) a second charging unit; e) a second exposure unit; and f) a second development unit, wherein the intermediate transfer unit receives a first toned image and a second toned image from the photoreceptor in a single transfer and transfers those toner images to print media to produce a toned image on print media. In various embodiments, specific color pairings are provided. | 12-09-2010 |
20120121276 | TESTING TRANSFER NIPS OF PRINTING DEVICES USING TRANSFER FIELD UNIFORMITY MAPS - A method and apparatus can, while operating a printing device in a test mode, supply a changed transfer field to a marking material transfer device. The changed transfer field is less than or more than the standard transfer field. The method and apparatus disable operations of other marking material transfer devices of the printing device to isolate the marking material transfer device. Further, the method and apparatus compare the actual amount and/or spatial distribution of marking material transferred to a recipient surface (to which the first marking material transfer device transfers the marking material) against a predetermined standard. Then, if the actual amount of marking material transferred to the recipient surface is different than the predetermined standard, the method and apparatus can identify the first marking material transfer device as being a potential source of printing defects. | 05-17-2012 |
20120308248 | ACTIVE BANDING CORRECTION IN SEMI-CONDUCTIVE MAGNETIC BRUSH DEVELOPMENT - An electronic development compensation method which is broadly applicable to SCMB development includes controlling image banding by actively correcting for mechanical development errors by modulating DC bias to a magnetic brush. | 12-06-2012 |
20130272735 | CLOSED-LOOP CONTROL OF NIP WIDTH AND TRANSFER FIELD UNIFORMITY IN CONFORMABLE BIASED TRANSFER SYSTEMS - Disclosed is a closed-loop control method and system to control the nip width and transfer field uniformity associated with an image marking apparatus. According to an exemplary embodiment, a closed-loop control system senses the uniformity of the image transfer field and applies forces to a transfer nip based on the sensed field to provide a more uniform field. | 10-17-2013 |