Doc Feeder (ADF) Maintenance Kit - 200K. Mfr Part # Konica Minolta DF-4000MK. The item "Konica Minolta bizhub 4750 4050 4020 ADF Maintenance Kit 200K DF-4000MK" is in sale since Sunday, December 4, 2016. This item is in the category "Business & Industrial\Office\Office Equipment\Copiers, Parts & Accessories\Parts & Accessories".The seller is "vegadistributor" and is located in Phoenix, Arizona. This item can be shipped worldwide.