A series of horizontal and vertical lines drawn at exactly 1/300th of an inch. For standard 600 DPI printers, these lines should be distinct. Bridging (where the ink fills the gap between lines) indicates ink pooling—too much ink being laid down. Broken lines indicate missing nozzles.
A series of overlapping triangles (Cyan, Magenta, Yellow, Black, Red, Green, Blue). This tests whether your printer’s driver is correctly mapping color spaces. If the red triangle turns orange or the green looks murky, you likely have a cartridge cross-contamination or driver profile error. printer test v5.1c