Meron...if you can view it in your monitor at a good size (na hindi pa obvious ang pixelation) and if you have photoshop (and know how to use it).

Steps:
1) view it in the screen (pede kahit anong program to view it) at a size na okay (the bigger the better) and yet hindi pa nagpipixelate yung image.
2) then move your mouse pointer so that hindi ito naka harang sa image mo na gusto.
3) then prese the PRT SC (print screen) botton. this will capture the screen image sa memory ng computer mo.
4) open photoshop and open a new file, meron lalabas na screen properties muna...change the RESOLUTION (by the default it ay 72 pixels per inch) to 300 pixels per inch. Going higher will be good but the file size will also increase.
5) then click OK
6) when the "blank" image appears, click on the Edit ang then PASTE.
7) yung kinapture mo sa screen will be the one pasted.
8) crop the image that you want and if you know how to work around with photoshop manipute the mo na lang ang contrast and other picture color manipulation function nito to achieve your desired clarity.
9) then do a test print of your picture.

HTH