Patent Document ID: 20170225498
Application ID: 15476419
Patent Status: 0

Claim One:
1. A printing system comprising an apparatus for defect detection in a printing system, comprising: a sensing unit comprising at least one first sensor device for sensing a surface geometry or topology of a sheet to be printed as the sheet travels on a transport path of the printing system and for generating data representative of that surface geometry or topology; a processor device for processing the data from the first sensor device to detect and classify deformations in the surface geometry or topology of the sheet; and a controller for controlling further progress of the sheet along the transport path of the printing system in dependence upon the deformations in the surface geometry or topology of the sheet detected and classified by the processor device, wherein the controller is configured to control and/or operate a removal device for removing the sheet from the transport path of the printing system if and when the processor device detects one or more deformations in the surface geometry or topology of the sheet that would render the sheet unsuitable for printing; the apparatus preferably including said removal device.