CY/T 104.7-2014 "Printing technology, paper and paperboard printing suitability test method, Part 7: printing asperity" stipulates the test method of paper and paperboard printing asperity, including the principle of ink marking test, instrument material, sample preparation, test steps and result representation. It is suitable for evaluating the asperity of paper and Cardboard in the printing process and affects the printing quality. It is issued by the State Administration of Press, Publication, Radio, Film and Television, and is managed by the National Technical Committee for Printing Standardization. The drafting unit includes the National Paper Products Mass Supervision and Inspection Center.