Archived from groups: comp.periphs.printers (
More info?)
Arthur Entlich wrote:
> I'm afraid your information on the 2400 is not correct.
>
>
> the 2400 is a 8 color printer, plus offering two full black options.
>
> The standard color set is:
>
> Cyan
> Light Cyan
> Magenta
> Light Magenta
> Yellow
> Black (either matte or photo)
> Light black
> Light-light black
>
> Or, as I stated, three black levels.
Ooops - quite right - my mistake.
>
> The dense black can be exchanged between the two (matte or photo), so a
> total of 9 "color" cartridges are available. The minimum ink droplet
> size is 3.5 pl.
>
> I do not understand how a purge can be facilitated without having the
> ink be removed from the head. I suspect you may be confusing something.
>
> The whole point of the purging process is to remove the ink within the
> head channels so that the new ink source (matte or photo) is flushed
> through the head so the ink type doesn't change during the printing
> process.
>
> I would also be surprised if Epson has reintroduced separate dark black
> ink head purging pumps, which would mean all the heads are purged each
> time a change is made, but I haven't yet seen the specifics to comment
> about that aspect.
>
Photo-i review seemed to think so, but that was speculation.
I am a bit mystified by cartridge changes on these printers. Is it
better to just replace all cartridges below about 20% when one is empty?
A lot of ink seems to be purged from all cartridges when one is replaced.
> Art
>
> frederick wrote:
>
>> Arthur Entlich wrote:
>>
>>> You may also wish to look at the Epson 2400 with the new K3 (three
>>> saturation levels of black ink) set. Both the R1800 and 2400 use
>>> pigment colorant inks.
>>>
>>> Art
>>>
>> IIRC, there are really two saturation levels. A light black and two
>> full blacks - one for gloss/semi gloss, one for matte. Replacement of
>> cartridge and priming is required when changing media. A nuisance,
>> but apparently not a waste of ink - as the priming doesn't expel ink.
>> The R2400 apparently excels at printing B&W with no metamerism. Both
>> excel printing colour.
>> For gloss/semi gloss printing, the R1800 uses a gloss optimiser to
>> even out the gloss level / eliminate bronzing. The R2400 does not -
>> the new ink is claimed not to need it. The gloss level on very high
>> gloss papers is reduced by the gloss optimiser on the R1800, and
>> apparently also by the ink on the R2400.
>> I don't know why, but the R1800 is a 1.5pl minimum drop size, the
>> R2400 3pl. I haven't seen the R2400 in action, so don't know if this
>> makes any visible difference.
>> The R1800 prints CDs, the R2400 does not, but has a straight through
>> paper path to handle heavier media than the R1800. The R2400 is more
>> expensive.