Abstract: In a paper re-pickup method for an image forming apparatus, if the initial attempt at paper pickup is unsuccessful, then the paper pickup is re-attempted automatically. The method includes the steps of: picking up the uppermost sheet of printing papers stacked in the automatic paper feeding unit; and checking whether the paper pickup proceeds normally. When the paper pickup does not occur normally, there may be a re-attempting to pick up the papers.

Abstract: A printer driver (which can be software) converts printing data into a data code and compares a quantity of the data code with a storage capacity of a memory prepared in a printer. If the quantity of the data code exceeds the storage capacity of the memory, then the data code is converted into bit map data that can be processed at a print engine of the printer. As the result of the comparison, if the quantity of the data code does not exceed the storage capacity of the memory, then the data code is transmitted to the printer. If the quantity of the data code exceed the storage capacity of the memory, then the bit map data is transmitted to the printer.

Abstract: A print control method of an image forming apparatus having a print engine unit which is controlled by a command applied from an external device and prints an image in accordance with image data applied from the external device on a recording medium by a page unit. The method includes the steps of: standing-by a reception of a print command signal from the external device in a stand-by state; detecting an operation state of the external device after starting a print operation in response to the received print command signal; printing an image in accordance with image data on printing paper, discharging the printed paper to outside of the image forming apparatus, and then executing a stand-by mode, when the external device is in a normal state; and stopping a print operation and then performing error processing operation, after discharging printing paper in state of white paper to outside of the image forming apparatus, when the external device is in an abnormal state.

Abstract: In an image forming system having fixing rollers for affixing developing material (toner) onto the surface of paper, a paper jam elimination method is disclosed. The method prevents toner stains within the system's interior portions by providing a complete transfer and fixation of toner onto the paper's surface. The method includes the steps of: detecting a paper jam, heating the fixing rollers to a predetermined temperature in response to establishment of a paper jam elimination mode, and eliminating the paper jam after heating the fixing rollers to the predetermined temperature.

Abstract: A method and apparatus for controlling a print engine of a page printer according to a position of printing paper are disclosed.