* Digital printing presses use toner and offset printing presses use wet inks.
* Offset printing presses use four printing plates.  Digital Printing Presses do not use any    printing plates.
* Both offset printing presses  and digital printing presses are are super fast
Digital printing presses use toner (dry ink), instead of the traditional wet (chemical-based) inks
Digital printing is a modern printing process that uses toner (i.e.: a dry, powdered ink). Offset printing presses are the traditional means of printing, and offset printing presses use wet inks.

Digital printing presses are similar to the photocopiers that you might use, in that digital printing presses use heat to melt the powdered toner (dry ink), and then that heat bakes the toner onto the paper. However, any similarity with photocopiers ends with that heat-based process, as modern digital printing presses are capable of producing finished full colour products that are equal to any traditional offset printing press.
As mentioned above, digital presses are state-of-the-art machines that produce high quality products, and they are printed in full color. Most digital printing presses use the CMYK color gamut. This means that our digital printing presses use four colors (C—cyan, M—magenta, Y—yellow and K—black) to produce all the colors in the rainbow.
Traditional offset printing presses use either the CMYK color gamut or the RGB color space (R—red, G—green and B—blue).
Below are two images. The top left-hand image is of a digital press, and this is the type of press that  Graphic Impact uses. The top right-hand image is of an offset printing press.

Modern digital printing presses are slightly taller that the height of an average-sized person, and they are quite long. Modern offset presses are about one-and-one-quarter the height of an average-sized person, and are very short when compared to digital printing presses.
What you will notice is that the digital printing press is completely enclosed, while the offset printing press is ‘open’.

The digital printing press’s paper can be placed in thefive drawers at the right of the digital printing press. Each drawer has a different type of paper stock. The digital printing press’s ability to accommodate up to five different paper stocks means the press can change from one printing  job to another printing  job quickly.

The offset printing press is a sheet-fed A1 printing press, and you can see the A1-sized paper on a tray at the left of the offset printing press. The offset printing press can take only one type of paper stock in its in tray, so it takes time to change from one printing  job using one type of paper stock.
Offset printing presses use four printing plates, and digital presses do not use any printing plates
You will notice that the offset printing press has four towers. Each tower contains a drum and each drum has a printing plate placed upon it. Each plate prints a different color in the CMYK color space (C—cyan, M—magenta, Y—yellow and K—black). The plates are manufactured by a computerised plate manufacturing machine, and are then manually placed upon each drum. This process takes time and it expensive, so the set up costs for an offset printed job are large.
Digital printing, however, does NOT use plates. The whole process is electronic, so it takes only a few moments to change from one printing job to another printing job. If you consider that fact that digital printing presses can hold up to five different paper stocks in their drawers and you add to that the ease of electronic printing, then digital printing presses can change jobs extremely quickly — the set up costs on digital printing presses are minimal.
Offset printing presses are super fast, and digital printing presses are quick (but nowhere near as fast as offset printing presses), wide format presses are slow.
So, digital printing presses are very good for short-run jobs, as digital printing presses can change from one job to another job (and change the paper stock that is used) very quickly. And offset printing presses, while difficult to set up, are great for printing large quantities.
And once the printing is completed the Graphic Impact Digital Press has all the finishing features for a project making it ready to go. As an example, saddle stitching for making a booklet or difficult folds.