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dirty yellow
ive been trying to print out a bright yellow on my versacam but it always looks a dull and dirty colour.
any sugestions -
5 Replies
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Jobs I send out to others, (1 Cadet – 1 old large Roland, can’t remember model) also come back with a less than pure yellow, even if I have it as 100% yellow in Corel. I send them the native cdr file and they export as eps into their RIP. Both my collegues agree that yellow and also orange are ‘problem’ colours. If there is a setting we should use that can improve this I would be very pleased to know it.
Regards to all
Alan D -
my guess is that its going through a profile before the rip profile.
chris
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i dont run our grenadeir enough to be able to give you proper help but…
andrew had this issues in the early days of having our machine. he had it with yellow and red spot colours i think it was. it was basically down to a colour setting. increasing or decreasing something or other. (sorry i know thats a feeble bit of help :lol1: ) anyway, the purpose of this reply is to say it is NOT a fault, just a setting. there is an easy way to get this spot on. andrew called B&P and had the problem sorted in a few minutes… i also remember eddie cotter posting ages ago about the exact same issue. he also replied saying a couple of minutes on the phone to tech support and he is now producing prefect yellows/red etc -
You need to take off Colour management for that colour. It depends on the rip programme you are using but I only know how to do it in wasatch.
Even though you send the colour as 100% yellow the colour correction will try to change it as it thinks its wrong so you need to right click on that colour in the rip and choose "replace spot colour". then turn off colour correction and you will get pure yellow or black etc. -
quote Terry Beech:ive been trying to print out a bright yellow on my versacam but it always looks a dull and dirty colour.
any sugestionsquote Chris Wool:my guess is that its going through a profile before the rip profile.There is a RIP calculation called Under Colour Removal (UCR) that might be what you’re looking for. The UCR works on principle that three equal portions of CMY can be replaced with an equal portion of black ink (1:3 ratio). So you reduce the overall ink volume whilst obtaining a "blacker" black. Essentially, print quality improves because having one part black ink contains less impurities (less muddy) than having three parts CMY.
I believe Chris’ advice is correct to inspect the RIP profile (make a backup first!!!) and tweak the settings. Within the profile, inspect the colour levels (curves) that concern the volume of each ink channel (i.e., at what rate the amount of ink is increased to obtain greater colour saturation). When saving your modified profile, take care to use a meaningful name that indicates it is better for the given type of print (i.e., predominantly yellow hues, orange hues, etc.).
Other than that, CADlink InfoSource has an excellent online document that contains general considerations about adjusting printer settings, ink levels, etc. Though this document (PDF) was created specifically to help SignLab users profile unusual media, it was written in such a fashion that lends itself to general application.
Cheers,
Rod
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