CEYE For HP Designjet T1100/ps/MFP T1120 T1200 T1300 T2300 Print Head Printer Head Cleaner Cleaning Maintenance Repair Tool V4 User friendly CEYE print head cleaner with full instructions The maintenance device is mainly for the problem of air-entering to the print head vertical and horizontal blank stripe printing. but it won't be helped for the problem of chip damage and electrical fualts of the print head If your printer head is cloged, empty or loses ink volume over time, it will no longer print correctly. Just try to use This smart tool kit to refill with ink into the printer head ,it may Save and Revitalize your print head NOTE: To use this product, you need printer ink in bulk bottles and cleaning solution. Product is useless until you buy the ink and solution If your printer is actually giving you and error that your printhead needs replacement, is the only solution to buy a new printhead