RICOH C840S toner cartridge, a reliable choice for improving print quality. - Brand: RICOH - Model Name: C840S - Type: Toner Cartridge - Color: Magenta In the event of a defective product, we will exchange it if we have stock, or provide a refund if we do not, within one week of the product's arrival. (We manage by lot number, so return of the product is required.) Thank you for viewing.