Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "deandadin"
<deandadin@...> wrote:
>
> I am looking to find out what the GSM thickness rating is. How does
> the GSM rating compare to mm thickness. For example, how many mm is a
> paper with a GSM of 255? How many GSM is a paper that is 1.3 mm? I am
> also interested in finding out the maximum thickness of papre an Epson
> 2200 will handle. Thanks a lot and I appreciate any response. Steve
>
The answer to both of your questions depends on the density of the
paper material. A dense paper which is 0.5mm thick may be heavier (in
GSM, grams per square metre) than a less dense paper 0.6mm thick.

In addition to this, an inkjet paper will in general be made up of
several layers of different materials with different densities and
thicknesses. So a thicker version of the same paper may simply have
one of the layers thicker but the other layers the same thickness. In
this case the weight would not be directly proportional to the
thickness but be something like (a + bx) where a and b are constants
and x is thickness.

In terms of the Epson 2200, I believe the manual tells you somewhere
what thicknesses are possible, and what the criteria are for using the
paper thickness lever and/or the rear feed slot. I've also found that
paper _stiffness_ is an issue when using the normal paper feed path on
the 2100/2200: if the paper is hard to bend, the take-up rollers can
slip on the paper & leave skid marks while trying to drag the paper
through the normal (bent) path.

Regards,

Alan