UNISON PRINTING A Place to Make Your Imprint Custom T-shirt Printing San Antonio Texas. Unison Printing is your place to wear your attitude, mindset, a point of view, feelings, warmth, sorrow, passions, and vibes on your Custom T-shirt. Est. in 2009, Unison Printing opened its doors to provide quality print, superior customer service, and competitive value. When you order custom t-shirts from us, you can expect to be treated as a unique customer. Our goal is to make sure you get the best product.