I was wondering what format you are using when you export to a Roland Verscamm printer.
RGB or CYKM
Ever once in a while I run into the problem of creating something using a color that includes either a red or blue that the printer won't print correctly.
When creating graphics are you only working with RGB colors?
The whole issue of color management is very interesting and also difficult to understand.
I am using an Oracal vinyl and have used the settings they suggest.
Thanks Jimmy
Hello jimmy' I DON"T know anything about large format printers, but I think the best thing to do would be to call the people you got the printer from and tell them what program you are using for your print work and ask them which palette to use for the RIP you are using to get the best prints.
My Thoughts George
You want to work in RGB - specifically sRGB. Your RIP expects RGB and was designed to handle the setting of your CMYK ink levels on your Roland.
Probably the single best thing you could do to understand colour management is to download the PDF at the following link and read through it a couple of times.
http://community.coreldraw.com/wikis/howto/designer-s-guide-to-color-management.aspx
Dan
Hi.
I didn't read the CM book but this works for me.
I design for most proofs or web graphics in RGB. Anything I print is in CMYK but I sometimes use RGB colors in my prints from color charts I have printed so I know how they output.
You can print out several of the palettes in Draw and make color charts for yourself to see color output or use for matching.
~John
Jimmy Hill said:RGB or CYKM
* They (the experts) say that it may be possible to print more colors if you send RGB to the printer, but I have not been able to prove it during my tests.
The trouble with working in CMYK is that CMYK isn't any kind of a standard. Inkjet printers use a multitude of ink formulas and Roland's "yellow" is quite likely a different "yellow" than Mimaki's or HP's or others.
CorelDraw's CMYK palette is Corel's best guess at the correct "mix" for any particular CMYK printer.
RGB is a standard and any RIP/printer driver that I know of expects an RGB file. My understanding of how a RIP works is that it brings in the RGB file and maps that to LAB. That LAB info is then analyzed and the proper CMYK ink levels for the particular printer in question are set and then it's ready to head through the printer. Sending CMYK to the RIP results in a redundant conversion and that's not desirable.
It's important to have your wide format printer properly "linearized" with a spectrophotometer. Only then will you be able to output consistent and predictable prints.
Please feel free to chime in you think my colour theory is off or incorrect. I'm a relative noob at colour output but I've found that printing out the colour charts and trying to match colours that way is time consuming, inefficient, and unpredictable compared to a well planned ICC compliant workflow through a properly linearized printer.
Just to note: I come at this from a signmaker's perspective and know little of the printing industry.