[synguy3]

We have had our machine for 2 years. We have not had luck using Auto-mask Black background option. We have always created our own manual masks.
Here is the question....
The attached pictures show what we are attempting to print on a black t. Any recommendations on how to set the file?
(fyi we use Corel Photo Paint)

 

[FatKat Printz]

what I usually do for these types of pictures is flattening the image..
In Corel Paint:

open the picture in Corel Paint

select image on the toolbar > make sure your background colors are black

Image > Convert to CMYK > pop up may come up about flatten the image click ok

now you can take your color mask and remove the black.. I just did it with your image and it not pretty because the image blends into the background but it will save on printing black ink.

If you have Corel Draw>

Click on the image and select "Edit Bitmap" it should then pop up into Corel Paint.

Follow the same steps as above.. when you are finished with the conversion.. select Finish Editing it will ask you if you want to save select yes

them image will return to Corel Draw

Select the image and you remove the color mask this way too.. I usually start in the corners because that is where the most black is.

Then print like normal...

 

[synguy3]

The file we have was supplied from our customer & is a flattened Jpeg already.
You then put print like normal.... what is normal for you when it comes to printing on a black t-shirts?
Because the auto mask / No black ink still puts down black ink on a black shirt.
Also, setting to Auto Mask / Black Background the printer will print a white box under the whole image area (rectangle).

 

[Don-ColDesi]

Have you tried using the Print From feature and using the background to generate the underbase?

 

[FatKat Printz]

The file we have was supplied from our customer & is a flattened Jpeg already.
You then put print like normal.... what is normal for you when it comes to printing on a black t-shirts?
Because the auto mask / No black ink still puts down black ink on a black shirt.
Also, setting to Auto Mask / Black Background the printer will print a white box under the whole image area (rectangle).

Do you have Corel Draw?? or just Corel Paint??

 

[fenris242]

shouldn't the auto mask (black bkgrd) automatically take out the black?? if not, what's the sense in having that feature?

 

[FatKat Printz]

yes, but sometimes when you take out the black it removes more than just the black. So when I flatten it for CMYK it separates the black instead of taking the entire image.

basically for jpegs.. we don't have this problem for white shirts just darks

 

[Don-ColDesi]

If the black is not black enough it will not. Try adjusting your Black detection threshold lower in your Ink configuration tab in RIP Pro. You can verify it is working by selecting YES for Hold for Approval and then looking at the proccessed job to see if it will print right.