Which ink cartridges are compatible with the HP DeskJet 3755?
The printer uses HP 65 Black Ink Cartridge (~120 pages) and HP 65 Tri-color Ink Cartridge (~100 pages). High-yield options are also available: the HP 65 XL Black Ink Cartridge (~300 pages) and the HP 65 XL Tri-color Ink Cartridge (~300 pages), which print 2.5x as many pages as standard cartridges. (Page 2)
From the official HP Deskjet 3755 All-in-One Printer manual, page 2
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