10/003-3Phaser 790/DocuColor 2006 IQ1Image QualityInitial IssueIQ1 IOT Image Quality Entry RAPThe purpose of this RAP is to serve as the entrance vehicle into the Image Quality RAPs sec-tion. All Image Quality RAPs must be accessed through this RAP.The RAP will have you evaluate the copies made during the Call Flow procedure for imagequality defects. It will refer you to the Image Quality Analysis RAPs, the Image Quality Defectsection in order to diagnose and repair any image quality problems.Initial ActionsCheck for the presence of the defect in Copy mode and in Print mode. If the problem occurs inCopy mode only, go to the IQ2 RAP.ProcedureGo to Table 1. Compare the prints for any of the listed defects. Perform the corrective actionthat is listed.Table 1 Image Quality DefectsDefect Description Corrective ActionADC Patch printout A residual image of one or more of the ADC patches that runs in the process direction. Go to the 009-704 RAPBackground Undesirable toner deposits on the copy or print. The toner deposits can be localized or may cover the entire copy or print.Depending on the density of the background, it is referred to as low, medium, high, or very high background. It may occur in allcolors, single colors, or any combination of single colors.Go to the IQ8 RAPBlack (or other Color) Prints An image is reproduced as solid black (or color) from lead edge to trail edge and from front to rear. The ROS Border may or maynot be visible.NOTE: None of the image from the original is visible in the copy or print.Go to the IQ5 RAPBlank Print Virtually no toner developed onto the copy or print. This defect should not be confused with extremely low image density, wheresome development actually occurs.Go to the IQ6 RAPColor Misregistration in Process Direction Multi-colored images that should be superimposed are offset in the process direction. Go to the IQ10 RAPColor Misregistration Perpendicular toProcess DirectionMulti-colored images that should be superimposed are offset perpendicular to process direction. Go to the IQ10 RAPDebris-Centered Deletions Sections of low density or missing image in the areas surrounding Toner agglomerates. Go to the IQ9 RAPDeletions The undesirable absence of toner from the copy or print. This defect can show as white, light, or untrue colored areas on thecopy or print. The most common example is a deletion caused by the “tenting” of paper from mishandling or moisture, or by dentsor defects in the IBT.Go to the IQ9 RAPDrum Defect An image defect that has an appearance similar to a horizontal traffic light. The marks usually appear in a group of four, and eachmark is a different primary color, arranged in this sequence: yellow, magenta, cyan, and black.Replace the Copy/PrintCartridge (PL 5.1)Front-to-Rear Density Variation The uneven development of toner on the copy or print from one area to another. Typically, this results in change in density fromfront to rear and sometimes from lead edge to trail edge.Go to the IQ17 RAPFuser Offset Random or repeating spots or patches of toner with a corresponding set of white spots where toner has been lifted from the print. Go to the IQ18 RAPHigh Frequency Bands Repeating 1.2 mm interval bands that are most noticeable in low density (20-30%) halftone areas of the copy. These bands runperpendicular to process direction.Go to the IQ16 RAPHigh Image Density A condition that results when too much toner of a single color or combination of colors is developed on the copy or print. Thisresults in darker copies or prints for the single color toner or the color that results from the combination of colors.Go to the IQ4 RAPHollow Spots These defects are small, usually black, ring-shaped defects with hollow centers. They may be round or irregular, and may appearrandomly, on lead edge, trail edge or in center of page.Go to the IQ18 RAPIrregular Streak or Deletion in ProcessDirectionStreaks: Usually medium-width streaks of (or shifts in) color most noticeable in low density 20-30%) halftone areas of the copy.A deletion in the form of a single streak that runs from the lead edge to the trail edge of the copy.Go to the IQ14 RAPLow Image Density A condition that results when too little toner of a single color or combination of colors is developed on the copy or print. Thisresults in lighter copies or prints for the single-color toner or the color that results from the combination of color toners.Go to the IQ3 RAPMisregistration/Skew The position of the image relative to the top edge and side edge of the paper is not within specification. Go to the IQ11 RAPMissing Colors Only the black portions of a color image are printed Go to the 009-704 RAPMottle Areas of solid, or high density coverage that are reproduced with a surface that resembles marble. Go to the IQ17 RAP
