Your satisfaction is our biggest affirmation! Feedback is very important. We would be very appreciated that you contact us immediately before you give us a neutral or negative feedback, so that we can satisfactorily address your concerns.thank you! Color:Cyan/magenta, Black/yellow, Photo Black/grayContents: Ouguan Compatible HP72 printhead Product Type:printhead Compatible With: HP Designjet T610/ T620/T770/ T790/T1100/T1120/T1200/ T1300/T2300 Using Help: 1. If the printer does not work after installing the cartridge clean the chip contacts of the cartridges with a rubber eraser or cotton swab. Take care not to touch the ink nozzles on the bottom of the cartridge.2. If the print pages seem faded or poor performance a nozzle clean and continue to print. 3. You are advisable to use your printer at least 1~2 times every month.
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