| Patent application number | Description | Published |
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| 20100092217 | TRANSFERRING UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME - Disclosed are a transfer unit and an image forming apparatus having the same. The apparatus can include multiple members configured to carry developer associated with color images. The transfer unit can include multiple rollers each disposed to opposingly face a respective corresponding one of the members, a belt interposed between the rollers and the members, and a device configured to support the rollers. The rollers can include a first roller at one end of the transfer unit, a second roller at an opposite end and one or more middle rollers arranged between the first and second rollers. The device can be configured such that a rotation center of the first roller and a rotation center of the second roller define a first plane and a rotation center of the one or more middle rollers defines a second plane parallel to but not co-planar with the first plane. | 04-15-2010 |
| 20100104321 | IMAGE FORMING APPARATUS AND VELOCITY CONTROL METHOD OF ROTATING BODY THEREOF - An image forming apparatus is configured to reduce a velocity fluctuation of a rotating body by reducing the AC velocity component of the rotating body. The image forming apparatus may include an image bearing body with a surface on which a toner image is formed; a driving motor configured to drive the image bearing body according to an input signal; and a controller configured to control the driving motor to output a motor output velocity at a period equal to that of an AC velocity component of the image bearing body. A velocity control method for the rotating body includes sampling a continuous motor input signal at a period equal to that of an AC velocity component of a rotating velocity of the rotating body. The sampled signal is transmitted to a driving motor that drives the rotating body, which is driven based upon the discrete motor input signal. | 04-29-2010 |
| 20100119246 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus, and a method of controlling same, the image forming apparatus including an image carrying body; a light exposing unit which emits a light toward the image carrying body according to a light exposing signal; a light sensor which is disposed to a side of the image carrying body to receive a part of the emitted light; and a control unit which detects a biased amount in a sub scanning direction of the emitted light of the light exposing unit based on a sensing result of the light sensor. | 05-13-2010 |
| 20110064471 | IMAGE FORMING APPARATUS AND POWER TRANSMISSION UNIT USABLE WITH THE SAME - An image forming apparatus with color registration improved by correcting an eccentricity error of a power transmitting gear, and a power transmission unit usable with the same includes a driving source, at least one image receptor which is rotatably driven by the driving source and on which a latent image is formed by exposure, a power transmission unit which transmits power from the driving source to the image receptor, a developing unit which develops a toner image for the latent image formed on the image receptor, and a transferring unit which transfers the toner image developed on the image receptor onto a printing medium, wherein the power transmission unit includes an image receptor axial gear formed on the same axis as the image receptor, and a plurality of intermediate gears which transmits the power from the driving source to the image receptor axial gear, and wherein the number Tn of teeth of an n-th one of the plurality of intermediate gears with respect to the image receptor axial gear satisfies the following Inequality: I/Rn−0.2≦Tn≦I/Rn+0.2, where, Rn is a reduction ratio from the n-th intermediate gear to the image receptor axial gear and I and n are a natural number. | 03-17-2011 |
| Patent application number | Description | Published |
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| 20080208756 | APPARATUS AND METHOD FOR PROVIDING SECURITY DOMAIN - An apparatus and method for providing a security domain are provided. The apparatus includes a security domain which is not connected to an external system and which manages a digital rights management (DRM) license requiring security; a non-security domain which can be connected to the external system and which manages encrypted DRM content; and a virtual controller which controls the security domain and the non-security domain. The method includes requesting checking of a license for encrypted content; checking whether the license for encrypted content exists, in response to the requesting checking of the license; and if it is determined that the license exists, requesting transmission of encrypted content, decrypting the encrypted content, and playing the decrypted content. | 08-28-2008 |
| 20080224388 | IMAGE FORMING APPARATUS AND PAPER GUIDE UNIT THEREOF - An image forming apparatus including a guide unit including: a length-adjusting assembly including a length-adjusting rack part, which is adjusted according to a length of printing medium; a width-adjusting assembly including a width-adjusting rack part, which is adjusted according to a width of printing medium; and a pinion assembly, which interlocks the width-adjusting assembly interlock with the length-adjusting assembly. The pinion assembly includes a first pinion part, which engages with the length-adjusting rack, and a second pinion part, which engages with the width-adjusting rack and rotates together with the first pinion part. The first pinion part and the second pinion part have a stepped shape. | 09-18-2008 |
| 20090016575 | REAL-TIME FACE RECOGNITION-BASED SELECTIVE RECORDING APPARATUS AND METHOD - Provided are a real-time face recognition-based selective recording apparatus and method. The apparatus includes a face recognition unit which recognizes a face of a person in a decompressed input image frame; a recording position setting unit which sets one of an image frame in which the person appears and a scene change start frame including the image frame as a valid recording point if the recognized face is detected for a predetermined period of time or detected a predetermined number of times, and identifies a position, which corresponds to a set image frame, in an image compression stream; and a recording unit which records the image compression stream from the identified position and storing the recorded image compression stream in real time. | 01-15-2009 |
| 20100083273 | METHOD AND MEMORY MANAGER FOR MANAGING MEMORY - A memory managing method and memory manager for a multi processing environment are provided. The memory manager adjusts the number of processors assigned to a consumer process and/or an assignment unit size of data to be consumed by the consumer process based on a condition of a shared queue which is shared by a producer process producing data and the consumer process consuming the data. | 04-01-2010 |
