October 2012
3-1
ColorQube 8570/8870 Service Manual
Image Quality
Xerox Internal Use Only - Revised, 3rd Revision
3 Image Quality
Print-Quality Problems Overview ....................................................................................
3-3
Image Quality RAPs
IQ1 Image Quality Entry RAP .........................................................................................
3-5
IQ2 Random Light Stripes...............................................................................................
3-5
IQ3 Predominant Light Stripes, Scratches or Marks Down the Print or Parallel to the Long Axis
of Printing ........................................................................................................................
3-7
IQ4 Streaks, Smudges, or Smears Down the Print .........................................................
3-8
IQ5 Partial Image/ Color Missing ....................................................................................
3-10
IQ6 The Printed Image is Too Light or Too Dark ............................................................
3-11
IQ7 No Image is Printed ..................................................................................................
3-12
IQ8 Color is Uneven or Wrong (Uniformity) ....................................................................
3-13
IQ9 Skew.........................................................................................................................
3-14
IQ10 Ink on White Portion of the Printed Page ...............................................................
3-15
IQ11 Fuzzy or Blurry Printing ..........................................................................................
3-17
IQ12 Vertical Lines Appear Wavy ...................................................................................
3-18
IQ13 Ghosting .................................................................................................................
3-19
IQ14 Oil on Print..............................................................................................................
3-20
IQ15 Incomplete Image Transfer, Drop Out, Loss of Image Pixels.................................
3-21
IQ16 Repeating Print Defects .........................................................................................
3-23
IQ17 White Stripes (Pinstripes) .......................................................................................
3-23
IQ18 Media Wrinkling or Damage ...................................................................................
3-25
IQ19 Image is Offset or Cutoff ........................................................................................
3-26
IQ20 Poor Ink Adhesion, Poor Image Durability .............................................................
3-27
IQ21 Gloss Irregularities .................................................................................................
3-28
IQ22 Grainy.....................................................................................................................
3-29
Internal Test Prints
Test Prints .......................................................................................................................
3-31
Weak or Missing Jet ........................................................................................................
3-31
Cleaning Page (Mud Page) & Light Stripes ....................................................................
3-31
Color Bands, RGBK Dither..............................................................................................
3-32
Manufacturing Skew Margin............................................................................................
3-33
YMCKRGB Solid Fills......................................................................................................
3-33
Cyan Solid Fills ...............................................................................................................
3-34
Magenta Solid Fills ..........................................................................................................
3-34
Yellow Solid Fills .............................................................................................................
3-35
Black Solid Fills ...............................................................................................................
3-35
Red Solid Fills .................................................................................................................
3-36
Green Solid Fills ..............................................................................................................
3-36
Blue Solid Fills.................................................................................................................
3-36
Manufacturing Skew and Margins ...................................................................................
3-37
Chase Pages...................................................................................................................
3-37
Oil Bar Chase ..................................................................................................................
3-38
Purge Efficiency ..............................................................................................................
3-38
X-Axis Motion ..................................................................................................................
3-38
Drop Mass Calibration.....................................................................................................
3-38
Head Roll ........................................................................................................................
3-39
Intensity CMYK................................................................................................................
3-39
Solid Fill Red Scan ..........................................................................................................
3-40
Solid Fill Green Scan.......................................................................................................
3-40
Solid Fill Blue Scan .........................................................................................................
3-40
Jet Substitution Mode......................................................................................................
3-41
Image Specifications .......................................................................................................
3-42
Summary of Contents for COLORQUBE 8570
Page 1: ...ColorQube 8570 8870 Printer ColorQube 8570 8870 Service Manual Xerox Internal Use Only...
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