CHART

PROBLEM TO BE SOLVED: To provide a chart, easily grasping the relation of the K value to solid density of each ink, in order to discuss standard beta density of each ink in an offset printing using process four-color inks of black, cyanogen, magenta and yellow. SOLUTION: The chart has a color density measuring patch region that includes beta provided at each ink color used for the offset printing and at least one flat netting, and a picture pattern region constituted of all the inks and including a plurality of different regions by a picture pattern amount integrated in the printing direction. In addition, the flat netting is a 75% or 80% flat netting, and the picture pattern region is the chart made to differ the picture pattern amounts using one ink key unit. Furthermore, the picture pattern area ratio of each ink of the picture pattern region is a chart changed by 15-50%. COPYRIGHT: (C)2007,JPO&INPIT