DOTJET is a high resolution ink jet printer that makes use of Xaar Jet piezoelectric inkjet skill. Under WYSIWYG model in Windows operating system, it is possible to input serial number, planking number, date, time, code, figure and bar code by multiple methods of inkjet, supporting all kinds of characters and languages. Single print head can print characters from 1.6mm to 17.5mm, 10 rows at the same time. The 200 dpi resolution allows printing any complicated figures and bar code; single mainframe can connect with 8 print heads. Printing Function 2 sets of independent dates 8 sets of independent serial numbers Distance-setting continuous printing Electronic scales connection Code reader connection printing Multiple Materials DDOTJET application is similar to plateless printing, especially to shipping mark on the carton, packing data (product name and specification), or metal, plastic, rubber, food, drug, electron, woods, parts, complicated figures, specification and characters, including printers for large and small characters and tags.