Re: [Gimp-print-devel] stc740 now understands ESC(U, but ...

[Karl H. K. <kh...@kh...>]

> OK, here's my suggestion on this: we implement a new set of features
> MODEL_COMMAND_SET.  It seems like the newer printers support more
> (hopefully always) or less (hopefully never) proper supersets of the

=46rom what I understand so far this assumption is correct.=20

> older commands.  I don't want to entirely eliminate the new commands;
> I haven't calculated everything out, but I suspect that the higher
> resolutions on really long paper require the extended commands (many
> of these commands simply extend the field widths).

If you want to feed a 1200 from a roll you probably need the newest
commands.

>=20
> MODEL_COMMAND_SET0 is the "traditional" old-style commands that all of
> the Stylus printers support.
>=20
> MODEL_COMMAND_SET1 is the extended commands supported by the older
> 1440 dpi printers (the original commands will only support 720 dpi),
> up to and including the Stylus Photo EX and 700.

So far so good. There are however printers between SET1 and SET2:
The 440 and 640 support most of the commands that the 740 and 900
understand, but unfortunately not all.

=2E.. just one moment I'm looking at my spec:

ESC i "Transfer Raster Image" applies to 740 and 900 only
ESC (/ "Set relative horizontal print position" is 740/900 only
ESC ($ "Set absolute horizontal print position" is 740/900 only
ESC (C "Set page length in defined units (extended)" is 740/900 only

I think these are all that are different.

>=20
> MODEL_COMMAND_SET2 is the extended commands supported by the 740 and
> 900.
>=20
> MODEL_COMMAND_SET3 is the set supported by the 750 and 1200.
>=20
> Does this seem unnecessarily complicated?  Should we do it anyway, and
> just not implement any more of these than we can prove are necessary?

There are probably more issues like the ones with the 440/640. So this
probably is not nearly as complicated as we could make it :-(

What about the other printers not yet covered (760, 850 and 860 come
to mind)? Do we have any idea about what command level they use?

Karl Heinz

--=20
Karl Heinz Kremer                                      kh...@kh...
                                                http://www.khk.net
                                                     ICQ: 41190739