I do not have a printer so I can not test any thing
But I do remember way back when 1980's or so the printer would change all the colors.
so the .jpg and the printed paper was defent colors.

Can we just print a render and all the colors stay the same or do we need to do something specail ?

You can just print it out.  The quality of your output will depend on a lot of different factors, though.

There's the printer itself, which will affect the colour, no matter what you do.  Whether or not you find the results acceptable is another story.  Unless the technology has changed dramatically, all printers have a relatively limited gamut compared to most monitors, even flat LDC/LED/TFT monitors with their relatively small gamut (when compared to CRT screens) are capable of displaying many more colours than a printer can handle.

The monitor will also tell you a different story, depending on which you use.  I still use a CRT because it still provides the best colour gamut of anything going.  That said, all monitors, no matter how well they are calibrated, will display a different image, even across a selection of the same type.

 Another thing to keep in mind is the way you perceive colour, particularly brightness.  A sheet of paper reflects colours at you; a screen actually shines them at you.  There's an immediate difference and - usually - a greater level of contrast to an on screen image.

Probably the best way to get something close to your on screen image is to convert your image from RGB to CMYK.  You can use Photoshop to do this.  Bear in mind your image will then be changed in appearance, because the CMYK format (which is what printers use) is - as I said - a limited gamut format.

So, short answer, yes, a printed image will always appear different from one on screen.

A lot of work has been done to get color printers easier to use and with less calibration required than in the old days. Its a two part problem, the first is will your screen acurately display the image file, and that can be addressed with a color calibration image or device. The second is will your printer acurately print your image, so that what you see onscreen is what you get on print.

I print small pics at walmart, they use a dye sublimation printer for the prints and that will let you see how closely your screen is set. Its also pretty cheap. less than 20 cents a pic .

Thanks for the info :)

Is there any way to convert a HSV,RGB to a CMYK in Gimp ?

Yes, there is: it isn't as effortless as in Photoshop, but you can get a plugin to do that. Try google "GIMP CMYK plugin"...

Quote - A lot of work has been done to get color printers easier to use and with less calibration required than in the old days. Its a two part problem, the first is will your screen acurately display the image file, and that can be addressed with a color calibration image or device. The second is will your printer acurately print your image, so that what you see onscreen is what you get on print.

I print small pics at walmart, they use a dye sublimation printer for the prints and that will let you see how closely your screen is set. Its also pretty cheap. less than 20 cents a pic .

That is a good idea.  And having your monitor set right will be the most important factor in getting what you want. 

Calibration charts are available from Google images. I dont know what adjustments LCD screens have , I have only ever worked with CRT. 

In commercial printing they had systems like Pantone, where you didnt worry about colors on screen , but you specified the Pantone number for the commercial printer to use. Probably obsolete these days

[god I am old ]

:)

why not use a printer thats already calibrated for JPG's already?

the Photoprinters you find in walmarts etc are already setup to print JPG's straight from the camera stick/card.

plus if you are only doing a few prints now and again, it's a lot cheaper than maintaining an Inkjet.

Quote -
Is there any way to convert a HSV,RGB to a CMYK in Gimp ?

Are you sure you need to convert to CMYK?

Click on the article in my sig for guidance.

Quote -

In commercial printing they had systems like Pantone, where you didnt worry about colors on screen , but you specified the Pantone number for the commercial printer to use. Probably obsolete these days

[god I am old ]

:)

Pantone is alive and well and still very much in use. en.wikipedia.org/wiki/Pantone

I have a quad PC ,Can handle 4 million polycount in zbrusg.
But a 3000 x 3000 pixel ,10 layers in gimp will slow the PC , snif snif.
Can Photo Shop go higher then 3000 x 3000 pixel.
Could Photo Shop go 9000 x 9000 pixels and 30 layers ?

Quote - I have a quad PC ,Can handle 4 million polycount in zbrusg.
But a 3000 x 3000 pixel ,10 layers in gimp will slow the PC , snif snif.
Can Photo Shop go higher then 3000 x 3000 pixel.
Could Photo Shop go 9000 x 9000 pixels and 30 layers ?

Photoshop will handle massive images. My main job is Fine Art reproduction and I routinely work with multi-layered 16-bit images which are 40inches x 60inches at 360 ppi ( 14400 x 21600 pixels, 1.8 Gb) and often much larger. That's on a fairly highly specced PC running Windows 7 64-bit. The best tip I can give is to use Photoshop's large document format (.psb) as it is more efficient than .psd or .tif.