Canon Arizona 1300 Series User Manual

Determine the Media Step Correction FactorIntroductionWhen you print on roll media, there can be discrepancies in the amount the media advancedduring each print swath. This is referred to as media stepping. It can cause banding to occur, inthe form of either dark lines or white gaps. The figure below illustrates this banding.[46] Media Advance Banding• A) Understep can result in dark lines, where the media has not advanced enough and theplacement of a swath overlaps the prior swath. This requires a higher correction factor.• B) Overstep can result in white gaps, where the placement of a swath is displaced a significantdistance away from the prior swath. This requires a lower correction factor.• C) Perfect Step, where media advances correctly. This requires no change.PurposeThe Media Step Correction Factor allows the operator to fine-tune media stepping and tooptimize print quality.When to doThis is only required when this particular banding occurs. If you don't see any banding in yourimages, there is no need to change the value from its default setting of 50.Before you beginIt is critical to load the media so that the media edge on the feed and take-up rolls are alignedwithin 1mm.Using the Media Step Correction Factor: In the 'Roll Media Manager' menu you can select thefield Step Correction and enter a value from 0 to 100. The default value is 50. You can enter alower value to correct for white gaps or raise the value to correct for dark lines.Procedure1. Put several instances of the Media Step Correction print in the print queue.2. Print with a default Step Correction of 50 (adjusted in Roll Media Manager).3. If white lines appear, the media is overstepping. Gradually decrease the Media Step CorrectionFactor until the white lines start to disappear. Make a note of the Media Step Correction value.Continue to decrease the value until dark lines just start to appear, and note the value. Typically,the average of these two is the ideal Media Step Correction Factor for this media.4. Similarly, if dark lines appear, the media is under-stepping. Gradually increase the value until thedark lines start to disappear. Make a note of the Step Correction value. Continue to increase theStep Correction until white lines just start to appear, and note the value. Typically, the average ofthese two is the ideal Media Step Correction for this media.Determine the Media Step Correction Factor116 Chapter 7 - Roll Media Option