The carbonless paper(ncr paper) is one kind of hidden color carbon paper, which has the direct duplication, direct coloration function. Its coloration is mainly: Under the exogenic process, after causing in the micro capsule the strength sensitive pigment and the oil solution overflow and the developer contact, has the staining reaction, thus has the duplication the function. It is mainly used in the multipart forms, the financial bill, the continual wealth bill, the general business bill and so on. Henan Institue of Product Quality Supervision and InspectionInspection ReportNo.SY2009041226 SampleNCRModel787*1092mmNO.ItemsUnitSpecificationTest dataConclusion1TightnessCBg/cm3≥0.670.71Up to standardCFB0.72CF0.722Lightness%≥75.087.2Up to standard3Opacity%≥60.081.4Up to standard4CF side SmoothnessCFBsμm≤7.005.69Up to standardCF6.005CF side surface PHCFBs/6.0 9.07.0Up to standardCF6.96Maximum WarpCBmm≤153.5Up to standardCFB4.5CF3.57Resistance to attritionCFB/≤5.01.07Up to standardCF0.998Color sensitivityCFB%≥80.097.8Up to standardCF98.69Blue Color sensitivity24hCFB/≥50.051.4Up to standardCF52.810Light fastness 144hCFB%≥40.085.7Up to standardCF84.711Transverse shrinkageCB%≤3.01.6Up to standardCFB2.5CF2.0