pdf printing of drawings

[David Buckingham]

Some black lines are coming out feint grey in the pdf printout.  Sometimes a slight shift in position on the drawing will solve it - but for some lines not all.  As if there's an invisible grid of some sort blotting out / causing dropout.  Can be horizontal or vertical.  No layers involved necessarily.

[Pat Stanford]

How thick are your lines and what is the resolution of your printer? It almost sounds like a very old problem where a line location fell between printer pixels and only got partially printed.

 

Or where you tried to print a line that was finer than the resolution of the printer. Sometimes it would print too thick (one pixel wide) and other times it would not print at all (zero pixels) depending on exactly where on the page it was placed.

 

Can you try and print directly instead of the PDF and see if the same lines react the same way? Just a single page if you need to tile multiple pages due to your printer size.  What is your PDF export resolution set to?

[David Buckingham]

http://Thanks for responding so quickly.  

Lines are 0.13 ;  0.5 is too feint for hard copies.

The problem happens before getting to a printer - the readout onscreen of the pdf shows some feint / grey lines.   I'm imbetween printers at the moment - I get printing done locally, but previous printouts have reflected the same glitch. 

DPI resolution is at 300.

As I mentioned - when I shift lines a few pixels across vertically or horizontally some lines change from grey to black and vice versa - this is only on the screen pdf not on the original drawing.

[Pat Stanford]

Did you ever get this figured out?