HP Scitex FB550 User Guide - Page 57
When to calibrate, AutoJet, Calibrate, Auto Calibrations > AutoJet Calibration
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When to calibrate When to run When loading a new media (but not when loading a new roll or sheet of the same media) Horizontal Banding Poor output quality (apparent misregistration of colors, banding) When printheads have been moved or replaced (by an authorized service provider) If Auto Calibrations do not improve print quality, or if printing on transparent or other media that cannot be detected by the printer Calibration Linearization (see RIP documentation for instructions). Media Feed Auto Calibrations Auto or Manual Bidirectional, Head-toHead, Saber angle, and Y calibration (all performed by the authorized service provider) Manual Calibrations Function Linearization of colors for accurate color matching. Calibrates the media advance. Calibrates the position of ink droplets in relationship to each other and corrects for individual jets not operating properly. You can also run the Manual Calibrations if necessary (they are more accurate). Head calibrations. Run Manual when calibrating transparent or other media that the onboard digital image sensor cannot calibrate. Aligns printheads, allows you to map out specific inkjets. Not normally needed except when printing on "invisible" media. AutoJet AutoJet detects individual inkjets that are misfiring or not firing at all. During subsequent printing, the printer compensates for these jets by using other jets in their place, ensuring maximum print quality without reducing print speed. You can also identify and map missing jets manually from the Manual Calibrations menu (see Manual Jet Mapping on page 55). You may want to manually map weak or misdirected jets that AutoJet does not detect and substitute. Jet replacement is not available in Express mode. To run AutoJet: ● Select AutoJet Calibration from the Auto Calibrations menu (see Automatic calibrations on page 51), or TIP: AutoJet does not work with transparent media, nor with many translucent media. In this case, run Manual Jet Mapping, or map jets on opaque media before loading transparent/translucent media for printing. 1. Press Calibrate from the Printing page, then press Auto Calibrations > AutoJet Calibration in the menu. 2. The printer prints the AutoJet test pattern. 3. The printer reads the AutoJet test pattern and maps any missing jets to available working jets. The control panel shows the progress of this operation as the percentage completed. 4. The printer prints an AutoJet report. 50 Chapter 7 Calibrate the printer ENWW