Imaging: Screen Resolution VS Printer Resolution

[Kinmon]

I've been doing some photo imaging with Photoshop for quite a long time, but one thing that bugs me is that:

Does the printing quality has anything to do with the screen resolution (or I should say the picture resolution)?? Cause, when I print, I set my printer to print @ 1440dpi and if my picture resolution is like 72dpi, will there be any difference?

Thanks for help. Kinmon

[obenton]

No relation. The printer doesn't know and doesn't care what screen resolution you're using. The graphic file contains an image of a certain horizontal and vertical size - instead of thinking of the image size in inches or centimeters, think of it in terms of horizontal and vertical pixels - then, how the image prints on a printer, using a certain number of pixels per inch, and how it appears on a monitor, using a certain number of pixels per inch, becomes clearer.