Re: Update on HP 10/20PS printers
Re: Update on HP 10/20PS printers
- Subject: Re: Update on HP 10/20PS printers
- From: Johan Lammens <email@hidden>
- Date: Tue, 04 Dec 2001 16:18:42 +0100
- Organization: Hewlett-Packard
email@hidden wrote:
>
Its the simulation proof at fault... and inkjet with a good RGB profile and
>
one with a good CMYK profile (not used for simulation) offer nearly identical
>
gamuts for bright colors... the enlarged CMYK profile gamut is mostly
>
theoretical, from the added dark tones that the black generation adds.
agreed.
>
The
>
HPs are expecting the file to be in final device space, with is rather
>
inconvenient for files that may go to multiple output devices, especially if
>
any of them are RGB. A color server may be the practical answer, but adds to
>
the cost.
not quite; the 10/20ps are expecting *proofing* files to be in final device
space (like SWOP CMYK), but you can perfectly well send RGB data to the rip and
use it to generate "presentation prints"; i.e. no simulation involved, "as good
as it gets" printing (using P intent). If the PS file sent to the rip contains
an embedded RGB profile (PS CSA) that will be used as input profile, otherwise
the default RGB profile selected in the rip/driver UI will be used.
The 50ps additionally offers the option to send RGB data (with embedded or
default profile) to the rip, have it separated to press CMYK (SWOP etc)
internally, and then converted back into its native device color space with
colorimetric intent, i.e. for proofing. This is equivalent to separating to
press CMYK externally, then sending press CMYK to the rip with the appropriate
CMYK input (simulation) profile selected (and the output profile corresponding
to the media and printmode used).
Johan