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

[Aaron Wolfe]

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.

On Jan 10, 2014 11:13 PM, "Aaron Wolfe" <aawolfe at gmail.com> wrote:
>
> Perhaps I misread that one.  The point remains that modern inkjets are
extremely high resolution and I simply don't buy your claim of "on/off" per
color per pixel, or 3/4 bit set of data.  I'm no expert on ink jets, but
looking at a couple articles reveals that there are print heads where a
piezoelectric mechanism causes between 0 and X tiny drops per jet, per
pixel and another mechanism that causes the valve to be open for variable
lengths of time.  Didn't find anyone talking about a simple on/off
arrangement...
>
> On Jan 10, 2014 11:03 PM, "Theodore (Alex) Evans" <alxevans at concentric.net>
wrote:
>>
>> On 01/10/2014 08:52 PM, Aaron Wolfe wrote:
>>
>> > I actually spent a little time on Google prior to posting the 90MB
>> > estimate.  I didn't find any printers claiming less than 24 bits per
>> > pixel.  I did find some like this one:
>> >
>> >
http://www.target.com/p/hp-deskjet-1055-inkjet-all-in-one-multifunction-printer-copier-scanner-j410e/-/A-12763402
>> >
>> > which claims 48bit depth and "up to" 4800x1200 dpi, for $50.   that's
>> > a whopping 3 gigabytes per page!  They must be compressing data sent
>> > over the wire quite a bit. I can't imagine even a modern PC printing
>> > 3GB pages in an acceptable timeframe.  Anyway, 600dpi/24bit color was
>> > quite a conservative estimate for a modern printer.
>>
>> Great, except those are the figures for the scanner, not for the printer.
>>
>>
>>
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