Color variations when printing

[frenchtaquito]

I created a booklet, many of the pages were originally created (by someone else)in photoshop as greyscale images and placed into pagemaker. Other pages are in color. The color pages seem to print fine on my HP 5500dn laserjet but there are lots of color variations between green and magenta for the grayscale pages. One page will be on the magenta side the other on the green side. I haven't a clue what is causing this. I'm ready to tear my hair out, if anyone has an suggestions I'll LOVE to hear them. Thanks

 

[BrownSwiss]

Does the Magenta happen when you print B&W with color on the same page or sig? We had that happen and what happens is that the sepia overpowers the B&W and you get a magenta tinge. It's basically a slight variation in the registration. (at least that's what our printer told us)

The greenish tint on your B&W page is that you possibly may have some color on it somewhere, or that you are using registration instead of a true black.