The control method of a sheet manufacturing apparatus and a sheet manufacturing apparatus

The purpose of the invention is to appropriately supply resin(s) in a step for mixing a material and resin(s) of one or more colors. This sheet manufacturing device 100 is a sheet manufacturing device capable of manufacturing a sheet of a predetermined color， and comprises: a plurality of resin cartridges that respectively store， color by color， resins of a plurality of colors; a resin supply unit 52 that supplies， to a predetermined material， resin(s) from one or more resin cartridges in a predetermined step for manufacturing the sheet; and a control unit 150 that， on the basis of a setting related to the color of the sheet to be manufactured， selects the resin cartridge(s) to serve as (a) resin supply source(s) at the time of supplying the resin(s) by the resin supply unit 52， and that makes a setting related to a resin supply amount for each of the selected resin cartridge(s). The purpose of the invention is to appropriately supply resin(s) in a step for mixing a material and resin(s) of one or more colors. This sheet manufacturing device 100 is a sheet manufacturing device capable of manufacturing a sheet of a predetermined color， and comprises: a plurality of resin cartridges that respectively store， color by color， resins of a plurality of colors; a resin supply unit 52 that supplies， to a predetermined material， resin(s) from one or more resin cartridges in a predetermined step for manufacturing the sheet; and a control unit 150 that， on the basis of a setting related to the color of the sheet to be manufactured， selects the resin cartridge(s) to serve as (a) resin supply source(s) at the time of supplying the resin(s) by the resin supply unit 52， and that makes a setting related to a resin supply amount for each of the selected resin cartridge(s).