Leonard, There are actually quite a number of inkjet printers that present themselves to the external host PC as RGB printers. Best regards, Ann McCarthy Imaging Systems R&D Lexmark International, Inc. <table width=100%> <tr valign=top> <td width=40%>Leonard Rosenthol <leonardr@pdfsages.com> Sent by: openicc-bounces+almccart=lexmark.com@lists.freedesktop.org 01/19/2011 10:16 PM <td width=59%> <table width=100%> <tr valign=top> <td> <div align=right>To</div> <td>Chris Murphy <lists@colorremedies.com> <tr valign=top> <td> <div align=right>cc</div> <td>openicc Liste <openicc@lists.freedesktop.org> <tr valign=top> <td> <div align=right>Subject</div> <td>Re: [Openicc] colord 0.1.0 released!</table> <table> <tr valign=top> <td> <td></table> </table> On Wed, Jan 19, 2011 at 9:29 PM, Chris Murphy <<a href=mailto:lists@colorremedies.com>lists@colorremedies.com</a>> wrote: There is NO DeviceRGB allowed in a PDF/X-3/4/5 file - all RGB data MUST be associated with an ICC profile.  You can have DeviceCMYK and DeviceGray - though they are actually only device values for the embedded OutputIntent.   The only "true" device-dependent colors in a PDF/X file are Spot/Separation colors, since they are resolved independently on each device. OK at the expense of embarrassing myself, I'm going to ask it anyway: are you sure? From PDF/X-3 (ISO 15930-3, 6.2.2): The profile that is the value of the DestOutputProfile key, if present, shall be an Output Device Profile (Device Class = ‘prtr’) as defined in ICC.1. From PDF/X-4 (ISo 15930-7:2010, 6.4.2.1): The profile that is the value of the DestOutputProfile key shall be an Output Device Profile (Device Class = “prtr”) as defined in ICC.1:1998-09, ICC.1:2001-12, ICC.1:2003-09 or ISO 15076-1:2005 and shall be interpreted as representing the intended printing condition. ICC spec (7.2.5) identifies 'prtr' as an "Output Device" profile.  So if you really do an RGB-based output device, then you could have a 'prtr' profile for it - but I am not aware of any in actual use.   I ask this because somewhere I was given the distinct impression that PDF/X-3 does allow RGB OutputIntents, in which case objects could be /DeviceRGB.  IF you had an actual RGB-based OutputIntent, that is true - but not in actual practice. Leonard <tt>_______________________________________________ openicc mailing list openicc@lists.freedesktop.org </tt><a href=http://lists.freedesktop.org/mailman/listinfo/openicc><tt>http://lists.freedesktop.org/mailman/listinfo/openicc</tt></a>