What is a high resolution image?

To guarantee the highest quality screen printing, it is best to use a high resolution image. Do you know what a high resolution image is? This article below does a great job at explaining it in detail.

http://www.idealdesignco.com/2013/03/20/image-resolution-tips-for-non-designers-high-res-low-res-and-everything-else-you-need-to-know/