# Re: UMax 1220S

Oliver Rauch (Oliver.Rauch@Wolfsburg.DE)
Sat, 20 Jun 1998 19:15:18 +0200 (MET DST)

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Hi Jim,

> This is to report that the Umax Astra 1220S - the latest in the 1200
> series - appears to work fine with SANE, with no nasty noises from the
> mechanism
Fine!

> The resolution on xscanimage only goes up to 600dpi though
Yes, thats the scanners optical resolution.
You can scan with 600 dpi in x and with 1200 dpi in y resolution!

> The main problems I'm having are now related to my Epson ST600 printer.
> For a start I can't get the pnmtops - or any other of the netpbm tools
> to work - they all want the libtiff.so.1 library, which I havn't been
> able to locate. The other problem is that whilst the screen image is
> true to the original, the printed image is not. I'm using the
> stc600p.upp Alladin GS 5.10 filter (which works much better than the
> st600 filter - which _drenches_ the paper with ink!)
>
> Whilst on the subject of scanning, the issues of scanner verses printer
> resolution appear to be more complicated than meets the eye. Are there
> any rules of thumb or is there a book `How to get the best from your
> Scanner' available?
Color correction for printers is an ugly thing. The printed picture
will always look different from the original. What can be done
relative simple is to use a gamma-correction for the printer.

> Why does my scanner provide resolutions up to 9600 dpi when the default
> resolution for photos seems to be 100 and OCR 300? What use is 9600 -
> scanning postage stamps?
The 9600 dpi is a lie. The driver Takes two pixels and generates some
addidtional pixels between two scanned pixels.
9600 dpi could be intersiting if you like to scan with a transparencey adapter
from a slide or a negative.

Bye
Oliver

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