These units hold the developer material and bring toner to the drum unit. Separate units exist for Black (DV-5150K) and color (DV-5150C/M/Y).
In the world of Kyocera, the imaging system relies on separate toner and developer units. Unlike cheaper printers where toner and drum are combined, the Taskalfa 352ci uses a dual-component development system. Below is the core consumables parts list for the 352ci. kyocera taskalfa 352ci parts list