RPF You're my only hope. Problem printing true black on PC printer.

[Grouch]

I'm trying to print a new front and side picture for my home made Sidious V2 mini. I created the image in Photoshop using photoshops black as the background, which I am assuming is a black as black gets in photo editing. But when I print it up on my HP psc 1350 all-in-one using Kodak Premium Gloss photo paper, once the printing dries the black is very green looking, not just a tinge of green but a washed out ugly blackish green.

The cartridges used in the printer are HP's 57 for color and 56 for the black. Is this problem just the nature of inkjet printing, is it the color cartridges, could it be the paper?

 

[Kris]

Did you create a CMYK document or RGB ?

CMYK is printing, RGB is light.

 

[Grouch]

<div class='quotetop'>QUOTE(Kris @ Dec 4 2006, 09:53 AM) [snapback]1371221[/snapback]</div>

Did you create a CMYK document or RGB ?

CMYK is printing, RGB is light.
[/b]

Thanks for that tip. :thumbsup


That seems to have imporved it a lot. It still doesn't match 100% to the MR box but it is much much better.

 

[SiR-ROUND]

Well, my Epson 900 does real black. So there must be something wrong.

 

[Capt MarVell]

I almost always print RGB mode to my Epson R220 6-color printer, and the results usually look better than when I send CMYK. If you're using CMYK, can you add undercolor to the black - around 25% to 50% each of cyan, magenta, and yellow? We do this on our Heidelberg DI press where I work to strengthen the black tones. Also, depending on the CMYK profile you're using, your black can be weak.

Try these CMYK conversion settings to convert your RGB file: (Mode>Convert to Profile>Custom CMYK) Eurostandard Coated, Dot Gain 0%, Separation Type GCR, Black Generation Medium, Black Ink Limit 100%, Total Ink Limit 400%, UCA amount 50%. It should put quite a bit of undercolor in the black areas.

Jim

 

[jhusel]

Is there a setting on your printer for "Print from black cartidge only"?

If not, you can try other ink. I buy my black in from MIS http://www.inksupply.com/ using an Ebony ink. It is great. Also, the type of paper makes a HUGE difference on how your black will turn out.

Jhusel

 

[Darkknight0667]

<div class='quotetop'>QUOTE(Capt MarVell @ Dec 4 2006, 02:28 PM) [snapback]1371268[/snapback]</div>

If you're using CMYK, can you add undercolor to the black - around 25% to 50% each of cyan, magenta, and yellow? We do this on our Heidelberg DI press where I work to strengthen the black tones.
[/b]

I was going to say the same thing. When printing an area of "solid black", it's never just black. There's always a certain percentage of the other 3 colors added.

 

[Talisen]

Best thing to do here, if you just want the black only to print it to take the image into Photoshop, do a "select all", then "copy" (so the entire image is in the clipboard memory), then open up the channels pallet and with the entire image still selected, delete the contents from the C M and Y plates (you might need to make certain the background colour in the colour selector is white) then paste the image back into the black plate.

Now print the image as a CMYK and it should print black only giving you true black and white imagery.

 

[tgreco]

I do know that in high quality printing, when they do black, they always add just a touch of red. Makes the black look deeper. If you're unhappy with the results you may want to try that.

consult the pantone pallette in photoshop...

 

[Grouch]

<div class='quotetop'>QUOTE(Capt MarVell @ Dec 4 2006, 11:28 AM) [snapback]1371268[/snapback]</div>

I almost always print RGB mode to my Epson R220 6-color printer, and the results usually look better than when I send CMYK. If you're using CMYK, can you add undercolor to the black - around 25% to 50% each of cyan, magenta, and yellow? We do this on our Heidelberg DI press where I work to strengthen the black tones. Also, depending on the CMYK profile you're using, your black can be weak.

Try these CMYK conversion settings to convert your RGB file: (Mode>Convert to Profile>Custom CMYK) Eurostandard Coated, Dot Gain 0%, Separation Type GCR, Black Generation Medium, Black Ink Limit 100%, Total Ink Limit 400%, UCA amount 50%. It should put quite a bit of undercolor in the black areas.

Jim
[/b]

I just tried this. I'm waiting for the ink to dry a little bit befor I really compare. Thanks a lot.

it seems to have worked slightly better than just changing it to CMYK. Just a tiny bit though. I think this is about as good as I will be able to get it without changing the actual inks. Thank you very much.