[Coco] Printing on cheap crappy printers with a CoCo was Re: Printing on a Coco with modern printers.

[Aaron Wolfe]

I totally agree that it can't be sending that much data.  I suspect they
use compression or some scheme that doesn't need all the bits all the time.

Google turns up mountains of discussion on 16 bit per channel printers and
the trouble they caused when they came out some years back because windows
only supported 8 bit drivers (I'm assuming this = the 24 or 48 bit depth).
While the general consensus seems to be that it doesn't make a whole lot of
difference in the final output, I still am not finding anyone saying ink
jets are 3 or 4 bpp mechanisms.  I know manufacturers like to push the
truth, but marketing 16 bits and implementing one seems beyond what they
could get away with.
On Jan 10, 2014 11:39 PM, "Theodore (Alex) Evans" <alxevans at concentric.net>
wrote:

> On 01/10/2014 09:25 PM, Aaron Wolfe wrote:
>
>> OK, I did find people talking about jets that are simply on or off, but in
>> that context the print head had a number of jets with the same color that
>> combined for a pixel, the specific example was a "2400dpi" printer using
>> basically 9600 on/off dots per inch.
>>
>
> Incidentally, a 4800x1200 dpi image at 48 bits per dot on an 8x10 area
> would take about 46 seconds to transmit assuming that you were getting the
> full bandwidth out of USB 2.0 connection.  This would certainly not allow
> one to reach anywhere near 18 ppm.
>
>
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