Patent ID: 8010003
Filing Date: 2011-08-30
Classification: G03G

Abstract:
1. An apparatus to prevent a fixing unit of an image forming apparatus from being contaminated, the apparatus comprising: a host computer to transmit printing data corresponding to material to be printed; a copier module to transmit copying data corresponding to material to be copied; a cover sensor to detect whether a cover of the image forming apparatus is closed; a storage unit to store the printing data transmitted from the host computer and the copying data transmitted from the copier module; a printer module to print the printing data or the copying data onto a printing sheet; a fixing unit to fix a toner image corresponding to the printing data or the copying data to the printing sheet; a sheet guide member to guide the sheet passing through the fixing unit; and a controller to set a printing start time or a printing region according to a density of the toner image to be transferred to a leading end of the printing sheet.