Did you calibrate your PC's display? Example at http://www.northlight-images.co.uk/reviews/pantone_huey.html
My all-in-one unit prints well and copies 'OK', but scanned images (.jpeg) sent to my computer are very light. (Blacks are gray and yellows are almost washed out. All other colors are affected proportionately.) I have not tried to darken the image with a photo editor program because when I've tried that in the past (for different reasons) I was never happy with the results. I'd like to have the original .jpeg image be correct. Any thoughts? Thanks.
One thing you could do is edit the object with something such as Picasa. Download Picasa, do your scan, find the scan file/folder. right click the file, at the window scroll to Open with, click Picasa photo viewer, when item opens go to bottom of object(page), click edit with Picasa, with Picasa you have some of the editing options of which speak, red eye, color enhancement, bright and contrast levels etc. Oh and it is a free download, I use it for the majority of my photos, have for quite a long time.
You'd have better results using a stand alone scanner for what you are trying to do. The HP unit you have is pretty basic, comparatively. There are lots of variables when it comes to scanning from both hardware and software standpoints, not just the scanner but the PC as well, graphics reproductive capability etc. A software mentioned by Mr. Proffitt, Pantone, will give a more accurate depiction (color) at the monitor, which can be a good thing, especially when doing editing, photos etc. There are ways to do all of this but the hardware and software needed to get professional results gets pretty costly. Those who are really serious about such things go to Mac systems instead of Windows and the bucks just roll out. Just for the heck of it, give Picasa a try, it works quite well for the average user, I've never tried Hypersnap, so I cannot speak to that. Another software(free) if it is still around with which to do SOME editing, is Photostory but it's been years since I have used that. Good luck and have fun.
GoPro, Pixpro, or Ricoh?
You can spend hundreds or even thousands of dollars on a 360-degree camera. We tested three of them to find out what kind of quality and ease of use you can expect at each price point.