Test Chart Pattern - Canon
A Canon term for inspecting the output of the printer by a series of small color bars that exhibit to a large part printer printhead health and flow conditions. It is critical to ensure sustainable ink flow in a Canon Head as this head type is a thermal and a no flow condition can burn the head.
Test Page - HP
An HP term in the maintenance setup menus that exhibits a full page print of different color blocks and text imagery. Defects in this print are detected by you and subsequent action should be taken to ensure full flow of inks from the printhead(s). Printhead damage can occur if continued printing on a no flow condition from the head(s).