What are the Epson SureColor T-Series high-speed production printers, and what are the differences between the models?

There are three (3) 24″ models:
SureColor T3770E (Single Roll, no PostScript)
SureColor T3770DE (Dual Roll, no PostScript)
SureColor T3770DR (Dual Roll, PostScript)

There is one (1) 36″ model:
SureColor T5770DR (Dual Roll, PostScript)

There are two (2) 44″ models:
SureColor T7770D (Dual Roll, PostScript)
SureColor T7770DL (Dual Roll, PostScript, Large Capacity Ink System)

Boost Productivity While Maximizing Your Workspace
SureColor T-Series high-speed production printers are built on the award-winning Epson Hero Platform, engineered to deliver new levels of performance, quality and reliability—in a sleek design with the smallest footprint in their class.

Next-Generation Printhead and Ink Technology
PrecisionCore is advanced printing technology engineered by Epson to power some of the world’s top-performing printers. This disruptively simple, smart and clean solution delivers outstanding quality at high speeds with low waste, across a wide range of applications. This 6-color pigment-based ink set includes gamut-expanding red ink and delivers vibrant colors. Water-, smudge- and fade-resistant, these inks produce durable and long-lasting prints that stand up to harsh technical conditions. Inks are available in high-capacity ink cartridges—ranging from 110 mL up to 700 mL—or in 1.6 L ink packs, reducing the need for frequent replacement.

State-of-the-Art Media Handling
SureColor T-Series production printers can work on a wide range of media, including glossy, technical, bond and matte media rolls and sheets; 2″ or 3″ core media; and rigid posterboard up to 1.5 mm thick. And with seamless dual-roll productivity, they can either accommodate two media types or sizes or use the second roll as a take-up reel for roll-to-roll production. These printers feature simple automatic roll loading, roll media identification, length tracking and a replaceable automatic rotary cutter for finished prints right out of the printer. In addition, they can produce borderless prints for media widths ranging from 10″ to 44″.