| Patent application number | Description | Published |
|---|
| 20090033918 | METHOD AND APPARATUS FOR ROBUST DETECTION OF THE DENSITY OF A PIGMENTED LAYER - Aspects of the disclosure can provide a method of detecting a density of a pigmented layer on an object. The method can include emitting a first modulated light onto a first portion of the object having the pigmented layer, detecting a first reflected light of the first modulated light from the first portion of the object, and determining the density of the pigmented layer according to the first reflected light. Furthermore, the method can include emitting a second modulated light onto a second portion of the object, detecting a second reflected light of the second modulated light from the second portion of the object, and determining the density of the pigmented layer according to a relative ratio that is related to the first reflected light and the second reflected light. | 02-05-2009 |
| 20100003044 | AMPLITUDE MODULATION OF ILLUMINATORS IN SENSING APPLICATIONS IN PRINTING SYSTEM - An image printing system includes a print engine and a sensing system. The print engine is configured to print a marking material image on a image bearing surface. The sensing system includes a plurality of illuminators, a modulator, a sensor, and a demodulator. Each illuminator is configured to simultaneously emit a light beam at the marking material image on the image bearing surface, thereby producing reflectance from the marking material image at least in a first direction. The modulator is configured to modulate an intensity characteristic of each of the light beams emitted by the illuminators such that each light beam has a different modulated waveform characteristic, where the waveform characteristic includes at least frequency. The sensor is configured to detect the reflectance from the plurality of light beams in the first direction and output a reflectance signal. The demodulator is configured to demodulate the reflectance signal to isolate a response of the marking material image to each of the individual illuminators. | 01-07-2010 |
| 20100086321 | DYNAMIC PHOTO RECEPTOR WEAR RATE ADJUSTMENT BASED ON ENVIRONMENTAL SENSOR FEEDBACK - A xerographic marking engine adjusts a charging actuator value, such as an AC peak-to-peak voltage or an AC peak-to-peak current, based on a determined knee value, V | 04-08-2010 |
| 20100104310 | APPARATUS FOR PRINT ASSEMBLY BLADE DEFLECTION DETECTION - An apparatus ( | 04-29-2010 |
| 20100272460 | APPARATUS AND METHOD FOR PRINT APPARATUS ROTATIONAL ASSEMBLY CLEANING BLADE ADJUSTMENT - An apparatus ( | 10-28-2010 |
| 20100310263 | METHOD AND APPARATUS FOR PREDICTING BLADE LIFE IN AN IMAGE PRODUCTION DEVICE - A method and apparatus for predicting blade life in an image production device is disclosed. The method may include retrieving a number of print starts, a number of print cycles, a wear rate for print starts, and a wear rate for print cycles from a memory, calculating wear of a cleaning blade based on the number of print starts, the number of print cycles, the wear rate for print starts, and the wear rate for print cycles, wherein the wear rate for print starts and the wear rate for print cycles are weighed differently, determining if the calculated wear of the cleaning blade exceeds a predetermined threshold, wherein if it is determined that the calculated wear of the cleaning blade exceeds a predetermined threshold, sending a notification that the cleaning blade needs to be replaced. | 12-09-2010 |
| 20100329702 | MULTI-COLOR PRINTING SYSTEM AND METHOD FOR REDUCING THE TRANSFER FIELD THROUGH CLOSED-LOOP CONTROLS - Multi-color document processing systems and methods are described in which the toner detachment field distribution curve is measured as a function of transfer field and the curve is shifted by adjustment of one or more toner state adjustment actuators to facilitate operation at lower transfer field levels for mitigating retransfer and other high field defects. | 12-30-2010 |
| 20110013959 | PROCESS FOR DEVELOPMENT OF CLEANING BLADE LUBRICATION STRIPES - According to aspects of the embodiments, there is provided an adaptive blade lubrication apparatus that includes a lubricant unit to place a lubrication stripe of lubricating material on a portion of a main surface; a cleaning blade that engages the main surface to remove excess toner thereon; and a controller configured to control the location of each lubrication stripe of lubricating material, wherein the controller places the lubricating material based on at least one of application frequency, blade lubrication state, blade engagement with the main surface. By varying the location of the lubrication stripe, the cleaning blade is better lubricated over the entire surface of the photoreceptor with the same or less lubricant than used in single location lubrication. Blade life and reliability are improved with more effective lubrication of the blade. | 01-20-2011 |
| 20110040524 | TONER MASS SENSING PRECISION BY NORMALIZATION TO SUBSTRATE REFLECTANCE AND ADJUSTED FOR TONER MASS LEVEL - A method of normalizing sensor readings includes receiving a reading from a sensor configured to detect light reflected from a substrate; and normalizing the sensor reading based on a function of sensed mass level on the substrate. A processor for implementing the method is also provided. | 02-17-2011 |
| 20110044742 | APPARATUS AND METHOD FOR XEROGRAPHIC PRINTER CLEANING BLADE LUBRICATION - An apparatus ( | 02-24-2011 |
| 20110158661 | APPARATUS AND METHOD FOR DETERMINING PHOTORECEPTOR CHARGE TRANSPORT LAYER THICKNESS OF APPARATUS USING A SCOROTRON CHARGE DEVICE - A photoreceptor charge transport layer thickness determining apparatus for a photoreceptor including a scorotron charge device having coronode wires and a scorotron grid positioned between the corona wires and the photoreceptor charge transport layer, the scorotron charge device being configured to charge the photoreceptor layer using corona discharge to generate ions directed to a surface of the photoreceptor charge transport layer. A first current measuring device measures a current supplied to the coronode wires and outputs a first current value, a second current measuring device measures a current being delivered to the scorotron grid and outputs a second current value, and a processor receives the first and second current values and determines a current delivered to the photoreceptor charge transport layer by subtracting the second current value from the first current value, and determines a thickness of the photoreceptor charge transport layer using the current value. | 06-30-2011 |
