1. Introduction & Overview

The Epson EcoTank Pro ET-5850 represents a paradigm shift for small-to-medium business printing. For decades, office managers have been forced to choose between expensive color laser printers or inkjet printers that bleed money through tiny, overpriced ink cartridges. Epson solves this by outfitting the ET-5850 with massive, refillable ink tanks that hold enough ink to print thousands of pages right out of the box.

Designed for heavy workloads, this all-in-one printer offers printing, copying, scanning, and faxing. It aims to compete directly with mid-range laser printers, boasting incredibly fast speeds and robust paper handling. While the initial purchase price is undeniably steep, the promise is that the ET-5850 will pay for itself multiple times over through microscopic running costs.

2. Design and Build Quality

Make no mistake, the ET-5850 is a beast. Weighing in at roughly 39 pounds and measuring 16.7 x 19.7 x 13.8 inches, it demands dedicated desk or table space. The design is highly professional, featuring a matte-white and black chassis that fits perfectly in a corporate environment.

On the front, you have a massive, highly responsive 4.3-inch color touchscreen that can be tilted for easy viewing. Navigation is fast and intuitive. Below the screen are the clear windows for the four ink tanks, allowing you to check your ink levels with a quick glance. Paper capacity is exceptional: it features two 250-sheet front cassettes (meaning you can load a full ream of paper at once) plus a 50-sheet rear specialty feed for envelopes or cardstock.

3. Setup Process and Connectivity

Quick Setup Guide

  1. Unbox and Prep: Remove the printer from the box and peel off all the blue protective tape. Do not plug it into your computer yet.
  2. Fill the Tanks: Open the ink tank cover. Take the included Epson 542 ink bottles, unscrew the caps, and insert them upside down into their respective slots. The bottles are keyed, meaning you cannot accidentally put the wrong color in the wrong tank. The ink stops flowing automatically when the tank is full—zero squeezing, zero spills.
  3. Initialization: Power on the printer. It will take approximately 10 to 15 minutes to charge the ink delivery system. The printer will make various mechanical noises during this process.
  4. Connectivity: Use the touchscreen to connect to your Wi-Fi or plug in an Ethernet cable for a hardwired office network.

In terms of connectivity, the ET-5850 has everything a modern office needs: Wi-Fi, Ethernet, USB, Wi-Fi Direct, and Bluetooth BLE (for setup). It supports Apple AirPrint, Mopria, and the excellent Epson Smart Panel app.

4. Print Quality and Performance

The ET-5850 utilizes Epson’s PrecisionCore Heat-Free Technology, and the performance is staggering.

  • Speed: It prints at 25 ISO ppm for both black and color. Furthermore, the first page out time is incredibly fast (under 5 seconds), meaning you aren't waiting around for the printer to warm up like you do with laser printers.
  • Text Documents: Because all four inks (CMYK) in the Epson 542 line are pigment-based, black text is incredibly sharp, smudge-resistant, and highlighter-friendly. It is virtually indistinguishable from a high-quality laser print.
  • Color Graphics: Marketing materials, brochures, and pie charts look spectacular. The pigment inks deliver bold, punchy colors that don't saturate or warp standard copy paper.
  • Photos: The one minor weak spot. Pigment inks are not ideal for glossy photo paper. While photos are acceptable for business flyers, they lack the vibrant pop of dye-based photo printers.

5. Scanning and Copying Capabilities

To match its heavy-duty printing, the ET-5850 is equipped with a 50-sheet Auto-Duplexing Automatic Document Feeder (ADF). This means you can drop a stack of double-sided documents into the feeder, and the machine will automatically scan both sides of the page in a single pass. This is a massive time-saver for offices dealing with multi-page legal contracts, invoices, and double-sided reports.

6. Running Costs: The EcoTank Advantage

This is the entire reason to buy the ET-5850. The printer comes with two full sets of ink bottles in the box, which Epson claims is enough to print up to 7,500 pages in black and 6,000 pages in color. For many small offices, this represents a year or two of printing without needing to buy a single drop of ink.

When you finally do need to buy ink, replacement bottles cost a fraction of traditional cartridges. Your running costs drop to roughly 2 cents per black page and 2 cents per color page. Compared to traditional inkjets or color lasers—where a color page can easily cost 10 to 15 cents—the ET-5850 will easily save a busy office hundreds, if not thousands, of dollars over its lifespan.