PRINTER COMPONENTS AND OPTIONSXEROX DOCUPRINT 4850/4890 IPS INSTALLATION PLANNING GUIDE 3-7Customer-changeable unit (CCU)The customer-changeable unit (CCU) contains the replaceablecolored dry ink dispenser bottle and the color developer housing. It isa self-contained unit that is easily removed from the printer andstored until needed. Each bottle is uniquely coded to the color of thehousing to ensure that a wrong color is not added to a housing.Note: Only the color housing can be changed. The black housingis permanently installed in the printer, and only the ink and developerbottles are changed.A changeout cart is used to remove a CCU from the printer and totransport a CCU to the printer or to another area. Because of thephysical weight of the CCU, the cart is required to change colored dryink.The cart also serves as a storage device for CCUs that are notcurrently in use. For example, if you use both the red and blue inksin your operation, one CCU is always out of the machine in storageon the cart while the other CCU is installed.Figure 3-6. Changeout cart with CCU installedNote: You should have a cart for each CCU, so that one cart isalways empty and available to remove the CCU installed in thesystem. However, if your printer is used to print only one color—theCCU will never be removed—or if there is more than one 4850/4890printer in operation at your site, it may not be necessary to have onecart for each CCU. Consult your site representative for moreinformation.
