Sign printing represents a large share of what Gamma produces. Recent 40” x 64” board printing was on display at the Chicago Teachers Union lobby at 1901 W Carrol Avenue, where Gamma printed to 1/8” Sintra (PVC). Training union delegates as the union braces for the challenges of negotiating a new contract was made even more colorful with the display of Lambda digital prints. Gamma started the process by providing drum scans of 11”x17” posters. These digital scans were then printed as digital photos on Fuji Crystal Archival Professional paper.