Abstract: An apparatus and method for printing according to the type of print media when a printer having a wide printhead is used for printing is disclosed. The method comprises picking up the print medium and feeding the medium toward under the wide printhead; determining a type of the fed medium; and printing the medium in a predetermined resolution and in a predetermined ink dropping speed according to the type of the medium. Therefore, an optimal printing quality corresponding to the type of used paper can be obtained even when a user does not set the resolution.

Abstract: An image forming apparatus and a method thereof for preventing degradation of image quality by a malfunctioning nozzle are disclosed. The image forming apparatus includes a print head including a first nozzle line having a plurality of nozzles arranged with a predetermined pitch I and a second nozzle line disposed at predetermined distance D from the first nozzle line and having a plurality of nozzles arranged to be deviated from the nozzles of the first nozzle line with a predetermined pitch I. A controller controls the print head to inject ink to form at least a portion of dots to be overlapped by ink injected from the nozzles of the first nozzle line.

Abstract: An inkjet multi-function machine having cooperating scanning and printing functions, and more particularly, an inkjet multi-function machine in which a scanner is engaged with a printing carriage to communicate common motion, in addition to providing scanning specific motions. The inkjet multi-function machine includes a scanner fixing unit having a scanner position adjuster for fixing and supporting the scanner, wherein the scanner is movable between a first rotational direction and elevated position for scanning a document, and a second rotational direction and elevated position for scanning a sheet of paper, wherein the scanner can move together with the carriage when the carriage moves, and at the same time, selectively move between the first and the second directions and elevated positions.

Abstract: A method of detecting a state of a printhead and an image forming apparatus using the same. The image forming apparatus includes a power supply unit to generate power, a printhead unit having a plurality of heaters to generate heat according to a respective plurality of heat driving signals, a head board unit to transfer the generated power to the printhead unit and to generate the respective plurality of heat driving signals according to a nozzle control signal, and a controller to generate the nozzle control signal containing driving information of the plurality of heaters, to output the generated nozzle control signal to the head board unit, and to detect whether the respective heaters are in a normal state using information about a current flowing between the power supply unit and the head board unit.

Abstract: An inkjet image forming apparatus and a printing method for the same. In the printing method, a printhead is oscillated according to a type of a print medium to compensate for a malfunctioning nozzle or to perform high resolution printing. Thus, a higher resolution image than an actual resolution of the printhead can be obtained, and printing quality can be enhanced by compensating for a malfunctioning nozzle.

Abstract: An image forming apparatus and a method thereof for preventing degradation of image quality by a malfunctioning nozzle are disclosed. The image forming apparatus includes a print head including a first nozzle line having a plurality of nozzles arranged with a predetermined pitch I and a second nozzle line disposed at predetermined distance D from the first nozzle line and having a plurality of nozzles arranged to be deviated from the nozzles of the first nozzle line with a predetermined pitch I. A controller controls the print head to inject ink to form at least a portion of dots to be overlapped by ink injected from the nozzles of the first nozzle line.

Abstract: An inkjet printer includes a main logic board having elements controlling the inkjet printer, and first and second carriers where first and second cartridges are mounted. The first and/or second cartridges are arbitrarily mounted on any one of the first and second carriers. A circuit component recognizing the arbitrarily mounted cartridge and informing an external apparatus of specifications of the recognized cartridge is provided at the main logic board. At least one of the first and second cartridges is a black or color cartridge.

Abstract: A print method to increase a lifetime of a printer head and a printer, a host, and a print system using the print method. The print method includes counting an amount of printing performed in a current print job, outputting a page inverting signal when the current print job is complete and the counted amount of printing performed is greater than a threshold value, and receiving and printing a page of a next print job that corresponds to the page inverting signal.

Abstract: An inkjet printer includes a main logic board having elements controlling the inkjet printer, and first and second carriers where first and second cartridges are mounted. The first and/or second cartridges are arbitrarily mounted on any one of the first and second carriers. A circuit component recognizing the arbitrarily mounted cartridge and informing an external apparatus of specifications of the recognized cartridge is provided at the main logic board. At least one of the first and second cartridges is a black or color cartridge.

Abstract: An inkjet printer includes a main logic board having elements controlling the inkjet printer, and first and second carriers where first and second cartridges are mounted. The first and/or second cartridges are arbitrarily mounted on any one of the first and second carriers. A circuit component recognizing the arbitrarily mounted cartridge and informing an external apparatus of specifications of the recognized cartridge is provided at the main logic board. At least one of the first and second cartridges is a black or color cartridge.

Abstract: An ink-jet printer includes a printing head having a nozzle unit for discharging ink onto recording media. A first drying unit primarily dries ink discharged by the nozzle unit. A second drying unit is set at a temperature higher than that of the first drying unit to secondarily dry the ink discharged by the nozzle unit.

Abstract: An ejection controlling device for an inkjet printer and a controlling method thereof includes determining whether an ink cartridge is installed in the inkjet printer, printing patterns in order by driving an ink ejection heater with an array of predetermined pulses with widths that vary in sequential order in response to the ink cartridge being connected to the inkjet printer, detecting printing densities of the printed patterns; determining the pattern with an optimal density among the printing densities, and storing the width of the pulse corresponding to the pattern with the optimal density as an optimal pulse width.

Abstract: An apparatus and method for printing according to the type of print media when a printer having a wide printhead is used for printing is disclosed. The method comprises picking up the print medium and feeding the medium toward under the wide printhead; determining a type of the fed medium; and printing the medium in a predetermined resolution and in a predetermined ink dropping speed according to the type of the medium. Therefore, an optimal printing quality corresponding to the type of used paper can be obtained even when a user does not set the resolution.

Abstract: An ink cartridge exchanging apparatus used with an image forming device. The ink cartridge exchanging apparatus having an opening formed at a housing, and an ink cartridge ejecting unit containing at least one ink cartridge and movably disposed with respect to the carriage and the opening to be ejected outside the housing through the opening when exchanging or repairing the ink cartridge.

Abstract: An ink cartridge exchanging apparatus used with an image forming device. The ink cartridge exchanging apparatus having an opening formed at a housing, and an ink cartridge ejecting unit containing at least one ink cartridge and movably disposed with respect to the carriage and the opening to be ejected outside the housing through the opening when exchanging or repairing the ink cartridge.

Abstract: An apparatus detecting an amount of ink discharged by a printer, the printer having a plurality of heaters and corresponding nozzles and performing printing by applying pulses to the heaters to heat the heaters and discharge ink through the corresponding nozzles, the apparatus including a detector connected to the heaters that detects a state change of the heaters and output a state change signal; and an ink discharge amount calculator that calculates an amount of discharged ink corresponding to the state change output signal from the detector.

Abstract: An inkjet multi-function machine having cooperating scanning and printing functions, and more particularly, an inkjet multi-function machine in which a scanner is engaged with a printing carriage to communicate common motion, in addition to providing scanning specific motions. The inkjet multi-function machine includes a scanner fixing unit comprising a scanner position adjuster for fixing and supporting the scanner, wherein the scanner is movable between a first rotational direction and elevated position for scanning a document, and a second rotational direction and elevated position for scanning a sheet of paper, wherein the scanner can move together with the carriage when the carriage moves, and at the same time, selectively move between the first and the second directions and elevated positions.

Abstract: A printer is connected to a host via an interface having a data wire and a power supply wire. The printer includes a power supply portion to convert an external power to a driving power and to supply the driving power to the respective electronic components of the printer, a switch portion to determine whether to supply the driving power to the respective electronic components, and a controller capable of operating from the voltage applied through the power supply wire, to control the switch portion according to a transmission of printing data through the data wire. The controller controls the switch portion to stop a supply of the driving power to the respective electronic components when the printing data is not transmitted for a predetermined time, and when the voltage is not applied through the power supply wire of the interface. Accordingly, unnecessary power consumption is reduced and convenience is improved.

Abstract: A head maintenance control method of an inkjet printer includes receiving a printing command performing a printing operation, calculating a time difference between an input time of the printing command and a final time that the printing operation of the inkjet printer has been most recently performed before the printing command is input, displaying a message requesting the maintenance operation when the time difference is greater than a predetermined time, and performing the maintenance when an execution command for performing the maintenance is input. An intensity of the maintenance operation varies in accordance with the time difference. The maintenance operation is performed in response to an actually required degree when the maintenance should be performed, thus an unnecessary maintenance operation is avoided or an incomplete maintenance operation is prevented.

Abstract: An apparatus detecting an amount of ink discharged by a printer, the printer having a plurality of heaters and corresponding nozzles and performing printing by applying pulses to the heaters to heat the heaters and discharge ink through the corresponding nozzles, the apparatus including a detector connected to the heaters that detects a state change of the heaters and output a state change signal; and an ink discharge amount calculator that calculates an amount of discharged ink corresponding to the state change output signal from the detector.