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This is for any experienced Roland PC 600 users out there...
I'm having trouble getting a good color print (solid color) using the Colorchoice software coupled with Corel 10. I think it relates to the dithering setting (which I am finding cannot be changed). I have adjusted my "rendering intent" for vector images to "spot color" based on tips on the Roland board, but no luck. I'm still getting pretty obvious dithering in my graphic. Actually, I went through a number of combinations to the settings with no visual difference in output.
Anyone know why we would not be able to turn off the dithering (for vector graphics)? Or can we and I just haven't found it yet?
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I've had better luck printing directly from corel on my pc600. Especially with vector stuff, just set the print pref in the 600 to spot color and letergo. Now some colors I just can't get to print without obvious dithering probs. But the folks at Roland do try to help. e-mail them and they will print the file with their machines and reccomend settings for you etc. Hope this helps!
-------------------- John Byrd Ball Ground, Georgia 770-735-6874 http://johnbyrddesign.com so happy I gotta sit on both my hands to keep from wavin' at everybody! Posts: 741 | From: Ball Ground, Georgia, USA | Registered: May 1999
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The problem is that the PC-600 and ColorCAMM while having ICC profiles included does not have any color matching capabilities at all. This is true despite what software you are using. That is why things will never come out the way they appear on the screen.
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Tim, On screen will NEVER exactly match your print. What you see onscreen is RGB....what you print is CMYK (and never the twain shall meet). There are GAMUT "restrictions". Too much to go into here. The "printing" end of the sign business is a whole nuther world. Matching colors is damn near an art form. And as for the dithering problem.....is the file a bitmap or a vector graphic. Was it created by you on your puter, or was it scanned?
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Here's a pantone color chart I use with the corel uncoated pantone color palette. Print it out and hang it on your wall, It's great for referencing and color matching. It's 36 x 60 the last 2 panels are for Corel's uniform color palette. I use it with my hp3500, most colors print fairly close to my pantone swatch book but there are a few surprises. Your pc600 may print more or less accuratly, but at least you'll be able to pick a color from the printed chart and know exactly how to print it.
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The easiest solution would be to throw your pc 600 out the window and invest in a Gerber Edge.
And FYI Bob I used Gerbers color ID matching and Monoco's color system to cailbrate my color settings and what I scan is what I see and what I see matches what my Edge LE, Edge2, Maxx2, Jetster and Signjet print. It tooks some time but now my customers get what they ask for and see.
-------------------- Jeff Garst Garst Signs Ct Posts: 19 | From: CT | Registered: Mar 2003
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Jeff....I agree that calibration is the (only) answer, along with a densitometer and spectrophotometer (I'm sure i misspelled all that). Enough money will get you almost anything!
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No amount of color matching hoo-haa will allow us to print the RGB colors that are out of gamut though. We have to explain that to customers who want some of those vivid greens & blues that look so nice backlit on a computer screen.
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