6 Print Quality Print Quality • Initial Print Quality Troubleshooting Actions ...........................................................180 • How to Use the Image Quality Service Diagnostic Print ........................................... 181 • What is the Image Quality Service Diagnostic Print? ........................................ 181 • Considerations for Printing the Diagnostic Print................................................182 • Diagnostic Part 1: Printhead Problems.............................................................183 • Diagnostic Part 2: Alignment Test...................................................................184 • Diagnostic Part 3:
Printheads & Paper Advance Test.........................................185 • No Printing Defects Found in the Diagnostic Print.............................................186 • Plot for escalation only .................................................................................190 • Force Drop Detection ...................................................................................192 • Disable Paper Advance Sensor......................................................................192 • Fix paper advance issues..............................................................................192 • Clean the paper advance sensor window .......................................................
194 • The User Advance Calibration....................................................................... 194 • Visual Paper Advance Plot ............................................................................195 • Interpreting plot results .................................................................................196 • Image quality issues by symptom..........................................................................199 • There is banding in the image.......................................................................199 • Lines are too thick, too thin, or missing ..........................................................
200 • Lines appear stepped or jagged................................................................... 200 • Parts of lines or text are missing.....................................................................201 • Lines are blurred (ink bleeds from lines) ......................................................... 202 • Dark or light horizontal lines across the image (banding)................................. 202 • The image is grainy. ................................................................................... 203 • The image has a metallic hue (bronzing) .......................................................
204 • The printed output is not flat......................................................................... 204 • The print smudges when touched.................................................................. 205 • Defects near the top of a print...................................................................... 205 • There are ink marks on the paper ................................................................. 205 • Colors are inaccurate..................................................................................
206 • Colors between different HP Designjets do not match .......................................207 • The output is completely blank...................................................................... 209 • The output contains only a partial print.......................................................... 209 • The image is clipped .................................................................................. 209 • The image is in one portion of the printing area .............................................. 210 • The image is unexpectedly rotated.................................................................
210 • The print is a mirror image of the original....................................................... 210 • The print is distorted or unintelligible.............................................................. 210 • One image overlays another on the same print................................................ 210 • Pen settings seem to have no effect ................................................................ 210 • The image has a wood-grain appearance (aeroworms) ....................................
210 • CAD Lines look misaligned, images are blurred................................................211 • Some media might deform when printing high area fill......................................211 • Printheads fail repeatedly ..............................................................................211 • Working with other commercially available media.................................................. 213 179