Patent application number | Description | Published |
20080273883 | CONSUMABLE UNIT AND IMAGE FORMING APPARATUS FOR CONTROLLING THE SAME - A consumable unit and an image forming apparatus for controlling a consumable includes a first memory that stores consumable item information regarding the consumable and provides the consumable item information through password authentication, and a second memory that rewrites recycling prevention information, which indicates that recycling is impossible, a limited number of times. Therefore, if the consumable is replaced, it is possible to prevent the first memory and second memory from being recycled. | 11-06-2008 |
20090097897 | MEDIUM FEEDING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A medium feeding unit for use in an image forming apparatus includes: a cassette frame to load a printable medium; a guiding member disposed inside the cassette frame to move in a widthwise direction of the printable medium, and to guide the printable medium; and a stopper disposed rotatably to the cassette frame to regulate movement of the guiding member. | 04-16-2009 |
20100028031 | CUSTOMER REPLACEABLE UNIT MONITOR (CRUM) UNIT, REPLACEABLE UNIT AND IMAGE FORMING APPARATUS COMPRISING THE CRUM UNIT, AND UNIT DRIVING METHOD THEREOF - A replaceable unit to participate in an image forming job of an image forming apparatus includes a storage unit to store therein a driving condition corresponding to an operation environment, a detecting unit to monitor the operation environment, a controlling unit to detect a corresponding driving condition from the storage unit if the detecting unit detects the driving environment, and an interface unit to provide a main body of the image forming apparatus with the detected corresponding driving condition. Accordingly, the replaceable unit can be driven under optimum driving conditions. | 02-04-2010 |
20100129095 | IMAGE FORMING APPARATUS INCLUDING TEMPERATURE SENSOR EMBEDDED DEVELOPERS AND METHOD OF CONTROLLING THE IMAGE FORMING APPARATUS - Provided is an image forming apparatus which includes a photosensitive body on which an electrostatic latent image is formed, a developing unit including toner to develop the electrostatic latent image formed on the photosensitive body, a temperature sensor installed in the developing unit to measure temperature around the toner, a memory unit having information regarding the toner and installed in the developing unit to receive signals from the temperature sensor, and a controller electrically connected to the memory unit to control developing operations based on the temperature measured by the temperature sensor. | 05-27-2010 |
20100183333 | LIGHT GUIDE AND CHARGE ELIMINATING UNIT, IMAGE FORMING APPARATUS AND IMAGE READING APPARATUS HAVING THE SAME - Disclosed are a light guide member, a charge eliminating unit and an image forming apparatus and/or an image reading apparatus having the same. The light guide member may include an incidence face through which light is introduced, an irregular reflection portion arranged along a longitudinal direction of the light guide member for irregular reflection of the light introduced through the incidence face and an emission face arranged opposite the irregular reflection portion for emission of the light. At least one recess may be formed in the incidence face for diffusion of the light introduced through the incidence face. | 07-22-2010 |
20100232814 | Image Forming Apparatus and Method of Controlling the Same - An image forming apparatus and a method of controlling the same are provided. The image forming apparatus includes a device information storage unit, a determiner and a controller. The device information storage unit is included in a replaceable device of the image forming apparatus and stores device-related information. The determiner determines whether the replaceable deice is a licensed or recycled product by analyzing the information stored in the device information storage unit, and outputs the determination result. The controller controls an operation of the image forming apparatus in response to the determination result output from the determiner. Since an operation of the image forming apparatus can be controlled according to characteristics of the replaceable device installed in the image forming apparatus, printing quality can be prevented from being deteriorated, durability of the image forming apparatus can be lengthened, and a user can safely use the image forming apparatus. | 09-16-2010 |
20100265526 | Electronic album image forming apparatus - Provided is an electronic album image forming apparatus having a scanner function, which includes an electronic album unit for displaying, selecting and editing a digital image; a print unit for printing a digital image selected in the electronic album unit; and a scan unit for scanning an original document and converting it into a digital image. | 10-21-2010 |
20110164289 | Printing system and printer with electronic signature capability and method thereof - A printing system and printer with an electronic signature capability, and a method thereof are provided. To print security documents using an electronic signature stored in a portable memory, the printing system of the invention includes a portable memory for storing an electronic signature. A memory interface connects detachably to the portable memory. A printer receives the electronic signature from the memory interface, composes the received electronic signature with print data, and executes a print operation. Accordingly, a stamping or signature process on numerous documents can be facilitated, and excessive stamping or signature execution can be prevented. Moreover, the electronic signature of the invention can be executed on various types of forms or documents. | 07-07-2011 |
20110217076 | LIGHT GUIDE AND CHARGE ELIMINATING UNIT, IMAGE FORMING APPARATUS AND IMAGE READING APPARATUS HAVING THE SAME - Disclosed are a light guide member, a charge eliminating unit and an image forming apparatus and/or an image reading apparatus having the same. The light guide member may include an incidence face through which light is introduced, an irregular reflection portion arranged along a longitudinal direction of the light guide member for irregular reflection of the light introduced through the incidence face and an emission face arranged opposite the irregular reflection portion for emission of the light. At least one recess may be formed in the incidence face for diffusion of the light introduced through the incidence face. | 09-08-2011 |
20110229154 | Consumable unit and image forming apparatus for controlling the same - A consumable unit and an image forming apparatus for controlling a consumable include a first memory that stores consumable item information regarding the consumable and provides the consumable item information through password authentication, and a second memory that rewrites recycling prevention information, which indicates that recycling is impossible, a limited number of times. | 09-22-2011 |
20110318029 | CUSTOMER REPLACEABLE UNIT MONITOR (CRUM) UNIT, REPLACEABLE UNIT AND IMAGE FORMING APPARATUS COMPRISING THE CRUM UNIT, AND UNIT DRIVING METHOD THEREOF - A replaceable unit to participate in an image forming job of an image forming apparatus includes a storage unit to store therein a driving condition corresponding to an operation environment, a detecting unit to monitor the operation environment, a controlling unit to detect a corresponding driving condition from the storage unit if the detecting unit detects the driving environment, and an interface unit to provide a main body of the image forming apparatus with the detected corresponding driving condition. Accordingly, the replaceable unit can be driven under optimum driving conditions. | 12-29-2011 |
20120099144 | Image forming apparatus and method for forming an image thereof - An image forming apparatus and method are provided. The image forming apparatus includes a communication interface unit that receives print data, an image forming unit that forms an image on a print paper, and video controllers that convert received print data into data processable by the image forming unit. The image forming apparatus includes a selection unit that selects one video controller from among the video controllers, and a control unit that controls the selection unit to selectively provide the received print data to one of the video controllers so that the received print data is processed in the video controllers in parallel by job or page. | 04-26-2012 |
20120275800 | CUSTOMER REPLACEABLE UNIT MONITOR (CRUM) UNIT, REPLACEABLE UNIT AND IMAGE FORMING APPARATUS COMPRISING THE CRUM UNIT, AND UNIT DRIVING METHOD THEREOF - A replaceable unit to participate in an image forming job of an image forming apparatus includes a storage unit to store therein a driving condition corresponding to an operation environment, a detecting unit to monitor the operation environment, a controlling unit to detect a corresponding driving condition from the storage unit if the detecting unit detects the driving environment, and an interface unit to provide a main body of the image forming apparatus with the detected corresponding driving condition. Accordingly, the replaceable unit can be driven under optimum driving conditions. | 11-01-2012 |
20130129367 | SWITCHING-MODE POWER SUPPLY (SMPS) HAVING OVERVOLTAGE CUTOFF FUNCTION, AND METHOD OF CUTTING OFF OVERVOLTAGE AND IMAGE FORMING APPARATUS USING THE SMPS - A switching-mode power supply (SMPS) for an image forming apparatus which may prevent an overvoltage supplied to the SMPS, and damage to circuits in the SMPS in the image forming apparatus. The SMPS includes a rectifying circuit to rectify an alternating-current (AC) voltage input from an external power supply source into a direct-current (DC) voltage, a transformer to transform the rectified DC voltage input to a primary coil and output the transformed DC voltage to a secondary coil, a main switch that is connected to the primary coil and switches an output of the transformer, a first overvoltage detecting unit to determine whether the rectified DC voltage is an overvoltage by comparing the rectified DC voltage with a first reference voltage, and a switching control unit to control a switching operation of the main switch based on a result of the determination. | 05-23-2013 |
20130142524 | UNIT INSTALLABLE IN APPARATUS INCLUDING A CONSUMABLE CONTAINER AND A CHIP AND METHOD OF MANAGING THE SAME - A unit installable in an apparatus and a method of managing a unit installable in an apparatus are provided. The unit includes a processor mountable to a container. The chip includes a first memory to store data that is accessible and decodable by the apparatus to authenticate the unit. The chip includes a second memory to store recycling prevention information. | 06-06-2013 |
20130142535 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING FUSING TEMPERATURE OF THE SAME - An image forming apparatus having two or more different rated voltages, the image forming apparatus including a voltage detecting unit, which detects a voltage level of alternating current (AC) power supplied from outside of the image forming apparatus; a control unit, which outputs a control signal according to the detected voltage level; a fusion driving circuit, which controls a number of waveforms and phase of the AC power according to the control signal and outputs the controlled AC power as fusing power; and a fuser including a heat generating body having a negative temperature coefficient (NTC) characteristic, which receives the fusing power and generates resistance heat; and a heating member, which is heated by the heat generated by the resistance heat generating body and fuses an image formed on a printing medium. | 06-06-2013 |
20140239847 | LIGHT EMITTING DIODE ILLUMINATION APPARATUS AND CONTROL METHOD THEREOF - Disclosed are a light emitting diode illumination apparatus and a control method thereof. The light emitting diode illumination apparatus includes a a light source that includes a plurality of light emitting diode channels including one or more light emitting diodes, and emits light by application of a rectified voltage obtained by converting an AC voltage, and a control circuit that selectively provides current paths according to a change in a level of the rectified voltage through a plurality of switching circuits connected to the light emitting diode channels, and controls pulse widths of control pulses provided to the switching circuits such that an current supplied to the light source of each channel follows a waveform of the rectified voltage. | 08-28-2014 |
20140252974 | LIGHTING APPARATUS - The present invention relates to a lighting apparatus which stably performs dimming control on a lamp implemented with light emitting diodes (LEDs) or the like. The lighting apparatus may improve power efficiency by driving power supplied to a lamp in a current regulation method, perform constant current control such that the lamp maintains constant brightness, perform dimming control for controlling the brightness of the lamp, commonly supply the power provided to the lamp to peripheral circuit modules, and perform constant voltage control such that a driving voltage supplied as power is maintained at a predetermined level or more. | 09-11-2014 |
20140312805 | LED LIGHTING DEVICE AND LED LIGHTING CONTROL METHOD - An LED lighting device comprises an LED light source unit; a light intensity control unit configured to provide a light intensity control signal for controlling a light intensity through a plurality of steps in a light intensity control mode; and a light source driving unit configured to provide power to the LED light source unit according to the light intensity control signal. | 10-23-2014 |