Canon imagePRESS C800 imagePRESS C800 Series Operation Guide - Page 170
About calibration, Printer calibration, Media family calibration
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About calibration About calibration Calibration is very important to keeping the quality of the color reproduction high. The environment of your print system influences the print quality. A constant temperature and humidity are essential for consistent color output. PRISMAsync automatically keeps the print quality as high as possible. However, additional calibration is essential to keep the color reproduction level stable for all the media types you use. PRISMAsync offers a structured workflow and feedback mechanism to integrate calibration into your daily work. There are two types of calibrations: the printer calibration and the media family calibration. Printer calibration Printer calibration has two procedures: • Automatic gradation adjustment The automatic gradation adjustment includes precise adjustments of the gradation, density and color quality of the primary colors. • Shading correction The shading correction includes precise adjustments of slightly uneven color densities in color planes. There are two modes available for the automatic gradation adjustment: • Standard This recommended mode guarantees a high print quality for most print environments. • Professional This extended mode is advised when you frequently use heavy and extra heavy uncoated media or when you frequently use coated media. The printer calibration settings on the control panel show which printer calibration procedures are configured for your print system. The dashboard of the control panel will show the printer calibration indicator when printer calibration is required. Configuration of printer calibration If required, consult a color expert to decide what you need to configure for printer calibration to achieve the required color quality: • The standard or professional mode for automatic gradation adjustment. • How often to perform the shading correction. IMPORTANT It is strongly advised to perform the shading correction at least once after the installation of the print system. IMPORTANT It is strongly advised to configure at least the automatic gradation adjustment for daily printer calibration. You can configure the required printer calibration procedures in the Settings Editor. Then, the operator receives a daily reminder to perform the printer calibration.(See Settings Editor settings and information on page 320) Media family calibration PRISMAsync provides default coated and uncoated media families. A media family is a set of media with the same output profiles (one per halftone) and calibration curves. Before you start a media family calibration, always perform the printer calibration. 170 Chapter 9 - Keep the color quality high imagePRESS C800 Series