Printed product defect detection method

摘要: The invention relates to the technical field of printing industry, in particular a printed product defect detection method. method specifically includes: during printing, color blockon edge same side each page product; after is completed, sequentially stacking all pages product, and enabling sides with blocksto be stacked stepped staggered manner, wherein staggering space equal matched size blocks, blocks at edges can connected forma linear belt extending from top end first bottom last if are complete, does not repeat arranged according number sequence, whether defective or judged by checking formed continuous not. Whether has missed pages, repeated disordered utilizing block form observing continuity, orderliness slope belt. simple, effective easy implement.