I would think that you could figure that out based on the resolution of the printer and
how fast the paper comes out of the printer.
On Jun 27, 2010, at 4:58 PM, Philip Pemberton wrote:
(... sending this from the correct FROM address would
help...)
Hi guys,
I've got a Laserjet III laser scanner module kicking around in my junkbox, harvested
from an utterly screwed LJ3. It has a fibre-optic light pipe on one side, which connects
to a photosensor on the motherboard. Does anyone know what the frequency or period of the
photocell signal is?
That is to say, how long does it take for the scanner to make one complete pass from
"horizontal blank" to the right margin -- in other words, the time from the
leading edge of one photocell pulse to the next?
I'm toying with the idea of repurposing the scanner module for another project (using
a BluRay laser diode to print directly onto photographic paper then process using a 3-bath
B&W process), and I'd like to figure out (in advance!) what the requirements will
be placed on the paper drive system (among other things!)
Thanks,
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/