>> Me wrote:
>>
>> 16.384" drum
>> 1000 dpi
>> 600 RPM (10 r/s)
>> 1 bit per pixel
>> 8 bits per byte
>>
>> I get 20 kilobyte per second
>>
>> Am I missing something
>>
> Jon wrote:
> Yes, probably that I wrote that in my
> sleep. OK, my machine has a 6.519"
> diameter drum, or 20.480" circumference
OK - Me bad that time. I have a 16.384"
circumference. Now I have drum envy.
> and a 1024 pulse encoder multiplied by
> 20 to give 20480 pixels per rev, at 10
> RPS. So, that gives 204800 pixels/
> second. Since this was designed to
> eventually allow 8 lasers to lay down
> 8 raster lines at a time it now only
> uses one bit per byte, so the DMA port
> has to supply 204.8 K bytes/second,
> which is no problem for even an ancient
> PC.
OK - thats he big difference to mine.
I am doing 8 pixels per byte.
I had never even considered the posibilty
of trying to line up 8 lasers at 0.025mm
spacing.
I cant even fathom how it would be done
at home.
We dont have the option at home of
giant lasers and DMD (Digital Micro
Mirrors) devices.
And I guess at home we also don't care
about waiting 16 minutes for a page to
print.