METHOD FOR DEFECT DETECTION IN A PRINTING SYSTEM AND PRINTING SYSTEM

摘要

The present invention provides an apparatus (20) for defect detection in a printing system (1). The apparatus (20) comprises: a sensing unit (21) having at least one first sensor device (22) for sensing a surface geometry or topology of a sheet (S) to be printed as the sheet (S) travels on a transport path (P) of the printing system (1) and for generating data (I) representative of that surface geometry or topology; and a processor device (25) for processing the data (I) from the first sensor device (22) to detect and classify deformations (D) in the surface geometry or topology of the sheet (S) based on at least one predetermined criterion, wherein the at least one predetermined criterion is adjustable or variable to suit operating conditions in the printing system (1). Further, the invention provides a corresponding method of detecting defects in a printing system (1).

主权项

1. A method of detecting defects in a printing system, the method comprising the steps of:
initiating a print job on the printing system based on predefined job settings, wherein the print job determines a job parameter, sensing a surface geometry of a sheet to be printed on a transport path of the sheet in the printing system to generate data representative of that surface geometry; processing the data generated to detect deformations in the surface geometry of the sheet; determining the suitability for printing of the sheet by comparing the data of the sheet to a reference; and wherein the method further comprises the step of selecting the reference based on the job parameter.