They say you start to see the pixels in an image when it is printed around 200 dpi/ppi or less, right? I'm looking at some images here at 100% view in photoshop, and when I open the image size window, it tells me that the images are between 70-100 ppi each. However, I measured the images on my screen and they are both larger than the shown print size, AND I see no pixels or other signs of poor quality in the image being displayed on my monitor.
So my question is: Why would the image print in less quality/smaller size than it displays? Is it really necessary to print in 200+ ppi (or the more recommended 267-360 for HQ) to get a quality print, or am I missing something here?
Since many are unique designs that I've spent a fair amount of time on, I'd hate to have to discard, upsample, or restart from scratch. Any help you can provide would be much appreciated.