Patent ID: 8842323
Filing Date: 2014-09-23
Classification: G06K,H04N

Abstract:
1. A print engine for receiving and printing print jobs, a print job comprising image data and job control data, the print engine comprising: a memory for saving a print job, a calibration device configured to keep multiple sets of calibration data, each set of calibration data being associated with a value of the job control data, a conversion unit for converting image data in a print job to print data using calibration data selected in accordance with the job control data in the print job, a marking process for marking image receiving material according to the print data, a user interaction device configured to communicate with a human operator, and a control unit for controlling the print engine according to the job control data and input from the user interaction device, the control unit being configured to analyse the job control data and to perform a calibration procedure to generate calibration data for a selected value of the job control data, wherein the user interaction device comprises an activation element that is configured to make, upon activation, the print engine perform the following steps: (a) converting a part of a selected print job to partial print data; (b) using the partial print data to mark image receiving material, thereby presenting a printed image for inspection to a human operator; (c) if the printed image does not satisfy requirements of the human operator, proceeding with steps (c (c (c (c (d) printing the selected print job using the calibration data corresponding to the job control data.