Hp 220 User Manual download pdf (Page 173)

8Ć25 Removal and ReplacementC3187Ć90000

Interpreting the Service Configuration Plot

   

The configuration plot has special builtĆin diagnostic features. It includes seven bars printed

along the top that enable you to detect printĆquality problems.

  

Use the first four bars (from left to right) to detect

 Problems with nozzle firing direction

 Missing nozzles

These bars are a series of straight horizontal lines, four pixels apart. Different nozzles are

used to create each of the four bars.

Use a 10X magnifier to look at the patterns. Perfect patterns should be parallel lines equally

spaced. Some slight errors in direction (meaning the ink dots are not being fired straight) are

due to nozzle imperfections and cannot be fixed. Others may be caused by nozzle

contamination. You can sometimes correct these by cleaning the nozzles ( User's Guide).

   

Use the fifth and sixth bars to detect

 Banding

 Problems with nozzle firing direction

 Misalignment between the cartridges

In the following two diagrams,  denotes a dot and  denotes a white space.

The fifth bar is a 25% area fill pattern that looks as follows,







The sixth bar is also a 25% area fill pattern that looks as follows:







These bars should look solid gray.

 

Use the seventh bar to detect misalignment between the cartridges.

This bar is a series of vertical lines, 8 pixels apart. The lines should be straight with a

deviation of no more than 2 mils.

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Hp 220 User Manual Page 173