> For the complete documentation index, see [llms.txt](https://docs.coraye.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coraye.com/quality-control/untitled-1.md). # Create a reference from a printed chart The control of a chart, allows a more precise control or to carry out a selection of the ranges intended to be averaged to characterize the production offset printer e.g. {% hint style="info" %} **In drafting process** {% endhint %} \ In this tutorial we will create a "Print Control .pctrl" file from the measurement of an ECI2002R test pattern supplied by Coraye. ### Selection of the reference range The chart offered by Coraye are available in the form of a color table in the profile creation module (Characterization). Click on the "**Create Profile**" icon at the top left, then click on the "**Create a characterization**" button ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUMvmQt4Jn3jV8z65%2FReference%20Mire%201.png?alt=media\&token=fed0c0a2-5e15-4818-87e2-e925ddc1e883) Since we have chosen to carry out the control on an ECI2002R CMYK chart, we will look for it among the CMYK ranges \ Click on "CMYK" ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUPxfkhQ_qFuVx3EV%2FReference%20Mire%202.png?alt=media\&token=4a4bb3bf-fea9-4133-aa80-23b03c5cad30) Click on the "Choose reference" button corresponding to the ECI2002R test pattern of 1485 patches. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUTtOaQFcdeMMwh-4%2FReference%20Mire%203.png?alt=media\&token=a82b8d7f-9697-48bd-b050-9375a72e9681) When the pattern is displayed, click on the export button located at the bottom of the pattern and select the option "**Export to table**" ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUXzXZCEVExTL4KPK%2FReference%20Mire%204.png?alt=media\&token=3fd977a9-35e6-4dd3-b7d5-e258b805b1f3) Save the .table file to a folder for easy retrieval. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUaBwJrcwF_UayV8o%2FReference%20Mire%205.png?alt=media\&token=b7bdfe1e-4991-408a-9f1b-0068df3bb354) ### Creation of the Print Control file Import the .table file you just saved so that it appears in the left column. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHeCBtu1g4W_wN_uzOk%2F-MHeDzSnCRIZw8xR3CBm%2FOpen%20file.png?alt=media\&token=ec461006-1f59-491b-8ff7-f9598fce73d5) Click "**Print control**" located at the top left, then on the "**Create a reference**" button. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUd1jx8G0wthLFL79%2FReference%20Mire%206.png?alt=media\&token=1b040b2a-f01e-482c-80a2-3c477c39d43b) Select "CMYK". ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUfs6B-BLQKhV8LG_%2FReference%20Mire%207.png?alt=media\&token=538ae8d2-0f93-4155-ad7e-8b4f19064881) Drag the "ECI2002R" table into the "**Drag a color table here**" box. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUifP9xXDq9BTntSV%2FReference%20Mire%208.png?alt=media\&token=1a0fcaf0-4f78-4751-b9bb-6facd230e4bb) The ECI2002R chart appears in the window. {% hint style="info" %} At this step, the pattern format can be modified using the tools to the right of "**Edit target format**". {% endhint %} Click on the export button (located at the bottom of the test chart), to export the test pattern in Tiff or Pdf format. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFXzpkA7i4VQ51RGwl%2FPrint%20control%20chart%202.png?alt=media\&token=8713402f-5f82-4d9d-9dd4-b7be96e2a2d7) Save the files in a folder to print them later. {% hint style="info" %} The number of files will depend on the number of patches and the layout. {% endhint %} ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MHavTQv0Uib-HV7CwUq%2F-MHbUtCEwQnr51efdsil%2FReference%20Mire%2010.png?alt=media\&token=078c140f-5c71-4dcb-9cde-b3d13c78a53f) ### Measurement of the reference chart Once the reference targets have been printed, we will be able to start the reading by clicking on the "**Start Reading**" button. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIF_YM3-oV1FFbY9Fws%2FPrint%20Control%20Chart%203.png?alt=media\&token=6dd7c4ad-7590-4baa-8d4c-63dc08ef4b00) Position the spectrophotometer in its calibration position Then click on the "**Start calibration**" button ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MBmLqJB8xS_-EM1nWne%2F-MBmacetMFAnXH6pkv2I%2FI1Pro2%20Cal.png?alt=media\&token=b3804b87-c246-4970-b5a5-f56a261d9ba5) ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIF_bQ0SguiXC8hWYNL%2FPrint%20Control%20Chart%204.png?alt=media\&token=86e500c4-039e-4628-9404-8a9963352753) Once the calibration is complete, start measuring the chart. The blue arrows will show you which line to measure. {% hint style="info" %} At this stage, it is possible to measure the chart several times or to measure several charts to average the readings. Just click on the "**+ reading**" button to define the number of readings you want to take. {% endhint %} {% hint style="info" %} If the measurements have already been saved in .table format, it is possible to drag / drop them into the Reading # 1, Reading # 2, etc {% endhint %} ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIF_z7Jom_tIi4nSJ76%2FPrint%20Control%20Chart%205.png?alt=media\&token=b75b45f5-8591-4f32-a54d-158517337798) When you have finished reading the charter, click on the "**Reading done**" button ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFXAo35nMKFslmv7Il%2FPrint%20Control%20Chart.png?alt=media\&token=a73ef3e9-51de-49a6-8480-8e439d5d9f26) In the information window, only the name of the setting is mandatory. All other information is optional. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFamkX7wCEz30SHkOo%2FPrint%20Control%20Chart%206.png?alt=media\&token=b779b58c-28d7-403e-8424-218ac2a92753) Once you have finished entering the information associated with your test pattern, click on "**Save and exit**". ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFd07EDDtuAKiVBdZQ%2FPrint%20Control%20Chart%207.png?alt=media\&token=72e082e8-c906-47af-a7df-a5583b252b20) The "Print Control .pctrl" file will appear in the left column. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFb9Iy58zeS5RQ6v7P%2FPrint%20Control%20Chart%208.png?alt=media\&token=230cf5ed-20d9-4d6b-bfb0-8257be573230) Once the reference has been created, remember to save it by right-clicking on the Print Control file, then selecting the "**Export**" option ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFcTN8XBn9Co0iJaSM%2FPrint%20Control%20Chart%2010.png?alt=media\&token=cf23ce39-da4a-4efa-9019-3d4a5e3bf07f) The next step will be the measurement of the charters to be checked. ![](https://817532847-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LjCNvq-KDdSRn96lZIz%2F-MIFGOmwOgiyjNduDww3%2F-MIFcOQOwdtw-eY0jDm0%2FPrint%20Control%20Chart%209.png?alt=media\&token=fddf5145-8c70-4449-8d30-21e7a1c21b51)