Yahoo Groups archive

QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Message

Re: [QuadtoneRIP] Using a colour cartridge to print black.

2013-12-28 by Mike Finley

That's not the way QTR works. It assumes the file its printing is 
greyscale anyway - control of which inks are used is through the QTR 
curves. Its a long time since I last created curves, so can't remember 
the details, and it'll vary between operating systems anyway. In essence 
you probably need a curve that gives 0 ink output for all but the 
cartridge you want to use, and 0-100% for the cartridge you want to use 
(a straight line should do!) and then find which level of grey you need 
to use to get the opacity you want without too much ink spread.

If you tell us the operating system you are using, someone should be 
able to give you more detailed instructions, if you need them. There are 
significant differences between Mac and Windows, and between old and 
recent versions of the Mac OS.

hope that helps ...

On 28/12/2013 10:00, beefyzee@... wrote:
> OK, you're probably wondering what am I on about. I've managed to get
> hold of a couple of used R210 printers but as usual they'd been stored
> and have blocked print heads. I'm still attempting to unblock them.
>
>
> I need just one colour: BLACK, and of course that is the nozzle set that
> has a blockage. I also need 100% ink output (if the paper will handle it
> without flooding) and 100% ink coverage where the image will be (the
> print needs to be opaque to UV light).
>
> So my idea was to fill one of the colour cartridges with black ink and
> make my TIFF image a colour that would make QTR use only that cartridge.
> However, I'm a bit stuck as to what precise colour I would choose in my
> graphics software when I want QTR to print only from one of the other
> cartridges. I have Corel Photopaint X5 and the old Adobe Photoshop 6.
>
> I'm a beginner to QTR so please correct me if I have the following
> wrong. I fill one of the colour cartridges with black ink. In QTR I
> disable all other cartridges. I must now make my TIFF an exact colour
> that QTR thinks that cartridge will be printing so it will fire that
> cartridge to give 100% coverage. Can I achieve this using R,G,B colour
> settings to precisely match either M, LM, C, LC, or Y colours.
>
> Hope I have explained that clearly.
>
> Cheers,
>
> Keith.
>

-- 
mike finley photography
http://www.mikefinley.co.uk
http://words.mikefinley.co.uk

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.