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January 2007

3-3

WorkCentre 7132

IQ1

Image Quality

Reversion 4.0

IQ1 IOT Image Quality Entry RAP

The 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 image

quality defects. It will refer you to the Image Quality Analysis RAPs, the Image Quality Defect

section in order to diagnose and repair any image quality problems.

Initial Actions

Check for the presence of the defect in Copy mode and in Print mode. If the problem occurs in

Copy mode only, go to the IQ2 RAP.

NOTE: MAX setup (ADJ 9.1.2), (refer to User Guide) is a color calibration for the copier and

printer. A Calibration Adjustment compensates for differences between the actual and the

expected (target) toner densities for each color. A Calibration Adjustment should be performed

whenever there is a noticeable change in the appearance (quality) of the output, particularly

changes in color tones or densities. Performing a Calibration Adjustment on a regular basis will

help to maintain consistent color quality over time. Since a Calibration Adjustment can affect all

jobs for all users, it is recommended that this procedure be performed only by the

Machine Administrator.

Perform the Calibration Adjustment if any of the following problems are reported:

• Incorrect colors

• Poor gray balance

• Colors have shifted over time

• Color densities too high or low

Continue with the procedure if the problem remains.

Procedure

Go to Table 1. Examine the prints for any of the listed defects. Perform the corrective action

that is listed.

Table 1 Image Quality Defects

Defect - green indicates hotlink to

image samples

Description Corrective Action

Background 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 all colors, single colors, or any combination of single colors.

Go to the IQ6 RAP

Color Misregistration Multi-colored images that should be superimposed are offset. This offset may be in the process direction or perpendicular

to process direction.

Go to the IQ8 RAP

Deletions

• Debris-Centered Deletions

• Streak Deletion in Process

Direction

The undesirable absence of toner from the copy or print. May show as white, light, or untrue colored areas. The most

common causes are “tenting” of paper from mishandling or moisture, or defects in the Transfer Belt.

• Debris-Centered: Deletions in the areas surrounding toner agglomerates.

• Process Direction Streak: 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 IQ7 RAP

(for process direction streak

deletion, go to the IQ12 RAP

Fuser Offset Areas of poorly-fused toner are lifted from one area of a print and deposited on a different area, or onto a subsequent

print.

Go to the IQ13 RAP

High Frequency Bands Repeating interval bands that are most noticeable in low density (20-30%) halftone areas of the copy. These bands run

perpendicular to process direction.

Go to the IQ14 RAP

Irregular Process Direction Streak Streaks: 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 IQ12 RAP

Lead Edge Toner Smear (fused) Smears of fused toner on the lead edge of prints Go to the IQ12 RAP

Lead Edge Toner Smear (unfused) Smears of unfused toner on the lead edge of prints Go to the IQ13 RAP

Low 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.

This results in lighter copies or prints for the single-color toner or the color that results from the combination of color ton

ers.

Go to the IQ3 RAP

Misregistration/Skew The position and/or alignment of the image relative to the top edge and side edge of the paper is not within specification. Go to the IQ9 RAP