RGB to CMYK

[Shane Drew]

can’t you select all then convert to cmyk bitmap 😕

[Tim Painter]

Are you talking vector?

[David Rowland]

u mean lots of vectors all RGB and u need them all CMYK.

I would use the Object Browser and then use the Colour rollup… then assign colour to each bit.. take a while I guess.

[Tim Painter]

Find and replace.
Replace colour model palette.

Select find colou model ie RGB
Replace with colour model CMYK

Make sure everything is ungrouped first I think.

Tim.

[David Rogers]

If they were made in PS – just change it in there under Image – Mode. (from memory).

You can convert between types. RGB, CMYK, (Lab Colour, Greyscale, Bitmap) etc.

Then just save it back in whatever format you fancy.

Dave

[Dave Bruce]

OK I had another look for the original file 😳 I told a fib, it was created in Corel 12 and saved as eps, lots of graduated colours so too long to select individually. I can convert to bitmap but the quality is not as good, and if I convert to bitmap in Signlab at higher res, I end up with that dam white rectangle 👿

Tim where is find and select?

Thanks for the advice so far.

Dave

[Tim Painter]

Dave dont think it will work with gradients

Edit
Find and Replace

Tim

[Alan Drury]

Find and replace colour models should work with fountain fills. If it is already a bitmap, change the mode under ‘bitmap’ tab. Conversion will depend on how the colour manager is set up ie profile used in separation printer
Alan

[nick boulby]

You could just open up the corel eps file in photoshop. In doing so photoshop will rasterise the file at whatever resolution you want. Then all you need to do is change working space to cmyk in photoshop. I think that should work.

[Rod Young]

quote DaveBruce:

I created some chrome effect letters in CorelDraw 12 earlier this year
I must have created them in RGB for sign work,
but now need them in CMYK for printing to business cards.
Is there a way in Corel to sweep select all the colours and change them all to cmyk?

quote DaveBruce:

OK I had another look for the original file I told a fib
It was created in Corel 12 and saved as eps,
Lots of graduated colours
So too long to select individually.

I can convert to bitmap but the quality is not as good,
and if I convert to bitmap in Signlab at higher res, I end up with that dam white rectangle

You have a number of options in SignLab. For my reference, can you indicate what version and build of SignLab you are using?

If I understand your descriptions correctly, the main issue concerns either 1) many objects that each have gradients, or 2) gradients that are formed from an array of many objects.

• Now keep in mind that the Job Palette is meant to help you perform global colour substitutions quickly.
• All you need do is left click and drag a Shop Palette colour onto the given Job Palette colour.
• In the case of gradients that are composed of tints of a single foil/spot colour, set the Job Palette to "Foil View" and do the same sort of drag-and-drop from the Shop Palette.

Dave, does this make sense to you?

You also have the option of using the Map Named Colours dialog to perform colour substitutions when importing the EPS file:

1. In SignLab, go File >> Import.
2. Set the file type as EPS (you could also set AI or PDF).
3. At the bottom of the Import dialog, tick the Show Map Named Colours checkbox.
4. Choose your EPS file and click Import.
5. The Map Named Colours dialog will open.
6. Along the left column are all the colours within the EPS file.
7. Along the right column are what each colour will be mapped to in SignLab.

I do not understand why your convert to bitmap is generating a white rectangle. My expectation would be:

1. Select the objects.
2. Go Transform menu >> Render to Bitmap.
3. Set Color Depth = Full Colour.
4. Set Resolution to perhaps 300 dpi.
5. And click Apply.

Ah, so by white rectangle you mean the white background of the bitmap. Okay, here is what you do:

1. Double-click the bitmap to enter AccuScan editing mode.
2. Above the Palette button is the Target Colour.
3. If the Target Colour is not white, then double-click to set it as such.
4. Now, with the Target Colour = white, press and hold the [Ctrl] key, and left-click the Target Colour.
5. At this point, the white background of the bitmap is transparent.

Of course, there are other ways of doing this, such as keeping the original vector shapes when you rendered to bitmap, and then use the vector shapes as a clipping path on the bitmap.

[Dave Bruce]

Thankyou Rod that solved the problem, I love it when I learn new tricks about Signlab, it helps to justify the high price, but it really is a great tool, it just takes time to find out all the ins and outs.

Thanks to everyone for your help.

Dave

[davidimo]

You can just create PDF with "convert all colours to CMYK" option and the open this PDF in corel again.

[Dave Bruce]

Ok Not sorted yet, now when I try to import the eps file it only has bits of it, yet the other day it was fine, what is going on? 👿

I have rest the computer back to the other day when it was ok, I have exported the letters from Signlab as EPS then imported them back again to see what happens, and yep I only get some bits of the letters, this is getting infuriating.

The PDF idea did not work at all, the removing background worked in signlab but file import to Corel says it is corrupted.

I have defragged, restarted, virus checked, but nothing, so looking for HELP!

Cheers

Dave

[davidimo]

Did you make this PDF with acrobat distiller?

[Dave Bruce]

explain please

Dave

[davidimo]

Well the best way to create PDF documents is with Adobe Acrobat Professional

http://www.adobe.com/acrobat

[Tim Painter]

OK Dave I loosing where you are with this.

What is the original file?

Where do you want to use what prog / file format?

Tim.

[Rod Young]

quote DaveBruce:

Ok Not sorted yet, now when I try to import the eps file it only has bits of it, yet the other day it was fine, what is going on?

I have rest the computer back to the other day when it was ok, I have exported the letters from Signlab as EPS then imported them back again to see what happens, and yep I only get some bits of the letters, this is getting infuriating.

The PDF idea did not work at all, the removing background worked in signlab but file import to Corel says it is corrupted.

I have defragged, restarted, virus checked, but nothing, so looking for HELP!

Cheers

Dave

Whoop. It sounds like you’re still doing quite a bit of work to sort this out, and now it’s just getting frustrating.

I would be interested in seeing the original CDL file and the EPS file that is being generated, plus any screenshots that you think would be representative. Would you please e-mail CADlink Tech Support (mod-edit) with ATTN: Rod to help them know who needs the files? Also, if you state your dongle number, then I can ask Tech Support to give me details about your SignLab package, which helps me to understand your perspective.

Cheers,

Rod

[Rod Young]

Dave,

I spotted your jpeg and eps files in the file exchange section, so I’ve had a go at reusing the EPS file. I have determined the following:

• The EPS does not import into SignLab well. If I turn object fills off, then I can see the objects, and that their gradient fills were not retained from the EPS. This is despite trying to perform colour substitutions during import, and even just linking the EPS file does not produce good results when I preview the job through the Print and Cut Manager.
• The EPS does not import into CorelDraw well. The file looks the same as in SignLab.
• The EPS does not import into Adobe Illustrator well. Same results as from SignLab and CorelDraw.

Dave, looking at the JPEG mockup, the only exceptional piece of the design is that Chrome Effect, which is something that you can quickly recreate within SignLab using the Spot Gradient Fill tool. There is an InfoSource training video that will demonstrate this. Go to the following link…

http://www.cadlink.com/infoSource/nfo_sl_tut.php

…and then click the Chrome Effect link.

Also, your SignLab help file contains a "Chrome Example" that shows how to use the Spot Gradient Fill tool to create the effect that you want.

1. Go Help menu >> Index to open the context help file.
2. In the Index, you can search for Example..Chrome.
3. Or you can browse the Thermal Spot Colour Printing chapter, which contains a Chrome Example – Art Supplies section.

Regards,

Rod

[Dave Bruce]

The thing is Rod I imported this chrome effect into Corel the other day, no problem so I don’t know what has changed.

I tried creating that effect in Signlab but the customer was not happy with it, he had seen a Gerber font and it had to look like that.

Tim, I am as confused as you mate, and I am the one creating the confused 😕

Basically I need to print business cards for the customer, I have printed on the Gerber the text for his signs so I have the file in Signlab, I need it in Corel to send to the printers.

Dave

[Daniel Gillen]

Export file from corel as .ai (adobe illustrator)
You can then select all items and convert to CMYK within Illustrator.
Will keep all items vector

Save as .eps from Illustrator, distill with your printers distiller job options.

Otherwise.. have fun with the Corel Object Manager 😉