I design book covers and when I print a proof out on my HP LaserJet CP5225 from InDesign CC the images are a strong 4 colour black, but the bounding boxes (coloured in Indesign) are a very flat black (single colour black). Both the Photoshop image and the adjacent InDesign coloured box have the same CMYK values, but they print with very different results. Is it possible to override the print preferences so that solid blacks are printed in 4 colour?
Vectors and pixels are differently translated to a Laser Printer, it is similar to the discolored box syndrome http://indesignsecrets.com/eliminating-ydb-yucky-discolored-box-syndrome.php. Here is inly the difference that black is affected.
Are you aware that you should use RGB images for print in InDesign?
It might be worth trying changing Preferences > Appearance of Black > Printing/Exporting to 'Output All Blacks as Rich Black' to see if that makes a difference. But it could be that the printer is automatically converting rich black text and vectors to pure black, and you might be able to configure it not to in the printer settings.