Patent ID: 8570601

Claim:
A method comprising: printing a multi-color test pattern using a printing device having different printing elements, to create a multi-color printed test pattern, each of said printing elements printing a single color; scanning said multi-color printed test pattern to produce a scanned image; decomposing said scanned image into color blocks using a computerized device; creating intensity profiles of said color blocks using said computerized device; comparing at least two of said intensity profiles of different colors to determine whether said intensity profiles indicate a correlated printing defect across multiple color separations using said computerized device, said correlated printing defect appearing the same at the same location in at least two of said intensity profiles of said different colors; and indicating, through said computerized device, whether a potential defect is located within a common printing element of said printing device or is located within one of said different printing elements of said printing device, depending upon whether said intensity profiles have said correlated printing defect.