Abstract: An image forming apparatus includes an overheat prevention device to control a heater based on a fusing temperature detected by a temperature sensor within a predetermined range when a controller generates an abnormal heater control signal.

Abstract: An image forming apparatus includes an overheat prevention device to control a heater based on a fusing temperature detected by a temperature sensor within a predetermined range when a controller generates an abnormal heater control signal.

Abstract: A consumable unit attachable to and detachable from an image forming apparatus, including a consumable used to form an image, and a memory, including a non-reversible area, to store lifespan related information on the consumable at the non-reversible area thereof.

Abstract: In a mounting structure of an integrated circuit, an electrolytic capacitor for smoothing power of a heating element is disposed out of range of thermal effect of the heating element, and a ceramic capacitor for supplementing the operation of the electrolytic capacitor is additionally disposed between the electrolytic capacitor and the heating element. Accordingly, a long lifespan of the electrolytic capacitor and a stable operation of the heating element can be guaranteed.

Abstract: In a mounting structure of an integrated circuit, an electrolytic capacitor for smoothing power of a heating element is disposed out of range of thermal effect of the heating element, and a ceramic capacitor for supplementing the operation of the electrolytic capacitor is additionally disposed between the electrolytic capacitor and the heating element. Accordingly, a long lifespan of the electrolytic capacitor and a stable operation of the heating element can be guaranteed.

Abstract: An input panel device adapted for use with an electronic device. The input panel device is coupled to the electronic device for inputting and selecting a desired operation from a user. The input panel device comprises a plurality of menu keys, a display which, upon selection of a menu key by the user, displays submenus pertaining to the selected menu, and a sensor array arrayed in a line inside the display which, upon selection of a submenu displayed on the display by the user, outputs signals having levels corresponding to the selected submenu. The input panel device further comprises a controller for calculating a central position of the sensors having changed output levels among the sensor array, and comparing the calculated central position with positions of the submenus displayed on the display to determine the selected submenu and inform the electric device of the selected submenu. The menus can thus be selected promptly and easily by using the light receiving and luminance elements.