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designjet 130nr prints blue for shading instead of grey.

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designjet 130nr
Microsoft Windows 7 (64-bit)

printer prints grey shades in blue or reddish tints when printing in autocad or pdf from autocad.  Ran calibration, test sheet- all shades of grey printed grey.

set printer to print gray scale, set greyscale on in autocad plot style. tried multiple combinations and printer setups-change in value of blue/red.


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Its almost certainly a printhead. 


Take them out and weigh them 


The should be about 20grams.  Low weight indicates a problem but may not be the cause


I had it with when greys came out green.  I guess the grey is made from LC LM Y applied very lightly 


Failing printheads seem to struggle with very light shades 


I would suspect the light magenta and yellow.


Good luck






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