Canon MF4500 Series Service Manual

Canon MF4500 Series Service Manual Manual pdf 50 page image

22 2-252-25Technical Overview > Fixing System > Service Works > Notes on service worksTechnical Overview > Fixing System > Service Works > Notes on service works● Other Functions■ Throughput Down ControlThis machine performs the throughput down control that extends the paper interval and lowerthe printing speed to prevent the edge of the fixing heater from overheating at continuousprinting of small paper (the paper with narrow width) and to prevent the fixing heater unit fromoverheating at high-volume continuous printing.An extended paper interval lowers the fixing heater temperature between the papers,preventing the edge of the roller of fixing assembly and the delivery unit from overheating.This control has the following 6 modes and the operation sequence differs depending on eachmodes.Paper SizePaper Type Large-sized Small-sized or Narrow Long and Narrow 16KLength: 271mm or moreWidth: 190mm or moreLength: less than 271 mm(Width: less than 190 mm)Length: lessthan 313 mmWidth: lessthan 190 mmLength: 313mm or moreWidth: lessthan 190 mmLength:270 +/- 15mmPlain Paper 25 (Fullspeed)-> 12 (Halfspeed) *1(2) 3 ppm(half speed)1 ppm(half speed) *2 (5)Plain Paper L 25 (Fullspeed)-> 12 (Halfspeed) *1(2) 3 ppm(half speed)1 ppm(half speed) *2 (5)Heavy Paper - (1) 3 ppm(half speed)1 ppm(half speed) *2 (6)Rough Paper 1 - (1) 3 ppm(half speed)1 ppm(half speed) *2 (6)Rough Paper 2-(1)3 ppm(half speed)1 ppm(half speed) *2 (6)(3)(In the case of userdefinition)Label Paper - - - - -Transparency - - - - -Postcard (4) (4) - - -Envelope - (1) - - -*1 : When the number of fed paper reaches 270 after starting from Cold state, the speedchanges from full speed to half speed, and the throughput changes from 25ppm to 12ppm.The number of fed paper at which the throughput changes from full speed to half speedmay vary according to temperature control of the Fixing Assembly.T-2-8*2 : Measures against wrinkle and curl.Number of Fed Sheets (1) (2) (3) (4)Half speed Half speed Half speed Half speed1 to 2 11 ppm 12 ppm 6 ppm 7 ppm3 to 5 9 ppm 12 ppm 4 ppm 5 ppm6 to 10 8 ppm 11 ppm 4 ppm 4 ppm11 to 15 6 ppm 11 ppm 3 ppm 4 ppm16 to 20 6 ppm 8 ppm 3 ppm 4 ppm21 to 30 6 ppm 8 ppm 3 ppm 4 ppm31 to 40 4 ppm 7 ppm 3 ppm 4 ppm41 to 75 4 ppm 6 ppm 3 ppm 4 ppmFrom 76 4 ppm 6 ppm 3 ppm 4 ppmNumber of Fed Sheets (5) (6)Full speed Half speed1 to 55 20 ppm 10 ppm56 to 110 16 ppm 8 ppm111 to 120 13 ppm 7 ppm121 to 150 11 ppm 6 ppm151 to 250 10 ppm 5 ppmFrom 251 8 ppm 4 ppmService Works■ At parts replacementNo work is required for this product at parts replacement.■ MaintenanceNo periodically replaced parts, durable parts or periodical service is set for this product.■ Notes on service worksNone.T-2-9T-2-10