[LUNI] Image quality - who's to blame ( printing or scanning )

[Mark Stuart Burge]

Hi Richard

Have you tried some simple tests to half the problem.

i.e. Print a test page from the printer properties screen,   or create a 
text document, a tif image (using gimp or openoffice to originate it) 
and compare the results.

If those all come out clean and crisp, then assuming the resolution is 
set at a reasonable size for the size of the scanned image, then you 
could look at the printer driver's 'dithering' method (again in 
properties for that printer)

What printer is it ? a black and white laser, or a ink jet (I am 
assuming it is a laser at the moment)

If all tiff images come out faded, yet text docs are ok, then, maybe 
look at the choice of driver and consider trying alternatives.

For example, if the printer is a HP laserjet on pcl5, you can try 
various pcl drivers (laserjet 4, 5si, 4000) and compare the results.



I hope some of these suggestions help you find a clue.


Mark


Richard Reina wrote:
> Hello All,
>
> Recently I've undertaken the task of improving the image quality of documents scanned through our document scanner.  After experimenting with different SANE scanimage commands I've found that it may not be a SANE (scanning) issue at all, but rather a print quality issue.  What I mean to say is that the scanned documents actually look quite good when viewed with: 
>
> $:display document.tiff
>
> However when I print the document it comes out light and subsequently hard to read.  Can anyone help me shed some light on this matter?  I'm not sure who's to blame (SANE or CUPS). 
>
> Thanks,
>
> Richard
>
>
> Your beliefs become your thoughts.  Your thoughts become your words.  Your words become your actions.  Your actions become your habits.  Your habits become your values.  Your values become your destiny.  -- Mahatma Gandhi
>