The CY/T 104.9-2014 Printing Techniques, Test Methods for Suitability of Paper and Paperboard Printing, Part 9: Gravure Dot Leak Printing standard details the methods and requirements for the Gravure Dot Leak Printing test on paper and Cardboard. This part of the standard covers the principles of the test, the instruments and materials required, the specimen prepative, the specific test steps, the recording of the results, and the content of the test report. Gravure Dot Leak Printing Testing is designed to assess the possible occurrence of dot leakage in the printing process, particularly in the gravure process, to help the printing industry ensure that the mass of the printing product and the printing effect meet the expected standards. Stability and efficiency in printing production can be improved while providing a reliable basis for quality control in paper and Cardboard manufacturing.