Drop on demand (DOD) is a broad classification of inkjet printing technology where drops are ejected from the print head only when required. The drops are formed by the creation of a pressure pulse within the print head. The particular method used to generate this pressure pulse creates the primary sub-categories within DOD, namely thermal and piezoelectric (piezo).
Disposable: Inkjet head is bonded onto the ink cartridge (image on left). Thermal inkjet, HP, Lexmark, Kodak, Canon, others. There are also version of thermal heads where the head component is separated from the ink cartridge …