Konica Minolta magicolor 1600W Service Manual - Page 64
Toner cartridge detection
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magicolor 1600W magicolor 1650EN COMPOSITION/ OPERATION Theory of Operation Ver. 1.0 Nov. 2008 11. Developing section 11.3.6 Toner cartridge (TC) life control A. Toner cartridge detection and new cartridge detection timing • The machine attempts to perform a detection sequence when the front door is closed. B. Toner cartridge detection • The machine accesses the TC detection board (CSIC) to check for data stored in it. Using that data, the machine determines whether or not a toner cartridge is loaded. C. New Toner cartridge detection • After a toner cartridge has been detected, the machine determines whether it is new or not based on the data acquired. D. Toner cartridge near empty and empty condition detection • The amount of toner consumed is calculated from the number of dots produced for one printed page by the controller. A toner near empty condition and a toner empty condition are thereby detected. 1. The machine determines that there is a toner near empty condition when the image counter and dot counter reach the life value. 2. The machine determines that there is a toner empty condition when a predetermined number of printed pages are produced after the toner near empty condition has been detected. 11.3.7 Image refresh mode • The supply roller of the toner cartridge contacts the developing roller and is thereby deformed during a long period of shelf time. • If a photo image or a solid image is printed after the supply roller is deformed, faint lines can at times occur at a pitch of 24 mm in the main scanning direction. • The image refresh mode is made available to lessen this phenomenon. • Use of this mode helps make less noticeable the faint lines occurring at a pitch of 24 mm in the main scanning direction. • Executing the image refresh mode rotates the toner cartridge rack. (1) Operation overview • The operation of the image refresh mode varies depending on the condition of the toner cartridge. Toner cartridge evaluation Operation overview If there is at least one toner cartridge, with which 30 or less printed pages have been produced since the detection of a new toner cartridge? • The developing roller is rotated for the toner cartridges of toner No of all colors. • The developing roller is to be rotated for the period of time corre- sponding to producing ten printed pages. • The developing roller is rotated for the specific toner cartridge in question. The developing roller is to be rotated for the period of time corresponding to producing 40 printed pages. Yes • If there are toner cartridges of toner of two or more colors involved, the image refresh mode is carried out for the toner cartridge of toner of one color before that for the toner cartridge of toner of another color is started. • The developing roller is rotated for about two minutes for one color of toner. 37