Chapter 99-7The second side of an automatic double-sided copy requires lower control temperature in comparison with the firstside. For this reason, the control temperature is lowered for the second side of an automatic double-sided copy so asto prevent adverse effects such as rises in temperature.9.3.2.7 Temperature Control in Response to Change of Paper Size 0007-5454iR2270 / iR2870 / iR3570 / iR4570The machine has a function to switch the paper size during continuous mode such as in rotation sort. When small-size paper is qenerated continuously, the temperature of the end portion of the fixing film rises. Immediatelythereafter, if large-size paper is passed, high-temperature offset might occur at the end portion where the temperatureis likely to have risen. To prevent high-temperature offset, the control temperature is changed when the paper sizechanqes.9.3.3 Cleaning9.3.3.1 Fixing Film Cleaning 0007-5300iR2270 / iR2870 / iR3570 / iR4570PurposeIn the event of a jam or when wear on the fixing film advances, the fixing film is rotated idly for collection of tonerfrom both the film and the pressure roller to the cleaning roller.The timing of control is as follows:1. If the reading of the cleaning counter has exceeded the interval (expressed in terms of the number of sheets), themachine starts cleaning with the fixing motor rotating at 1/4 speed. The length, timing, and intervals of cleaningmay be set in service mode: COPIER>OPTION>BODY>FIX-CLN. Further, the cleaning counter reading is resetat the end of cleaning.T-9-2COPIER > OPTION > BODY > FIX-CLNIf a copy or print job arrives while cleaning is under way, the machine will not pick up paper until the ongoingcleaning ends.If last rotation is under way in response to a rise in temperature at the film edge, the machine will hold cleaning until0 (default) 1 2 3Cleaning controltemperature0 225 225 225Cleaning control time 0 60 60 60Cleaning intervals 0 500 200 100
