Epson WF-7840 Review: Wireless All-in-One for Wide-Format Business Printing
The Epson Workforce Pro WF-7840 is a versatile, high-capacity inkjet printer designed for small businesses needing reliable wide-format printing, copying, scanning, and faxing from a single device.
By Elvis Dicki
Updated October 21, 2026
In the demanding environment of a modern small office or home-based business, a printer must be more than just a peripheral; it needs to be a reliable, multifunctional hub capable of handling diverse tasks efficiently. The Epson WF-7840 presents itself as a comprehensive solution, combining high-volume printing with the unique ability to produce professional-quality wide-format documents up to 13″ x 19″. This wireless all-in-one inkjet printer is engineered for productivity, integrating print, copy, scan, and fax functions into a single machine built around Epson’s PrecisionCore Heat-Free technology.
This review analyzes the Epson Workforce Pro WF-7840 Wireless All-in-One, assessing its specifications, design, and real-world performance based on manufacturer data and user feedback. It is designed for professionals who require wide-format capabilities for presentations, architectural drawings, or marketing materials, alongside robust daily office functions. For those managing document workflows that demand both volume and size, this printer aims to be a central, capable device.
Epson WorkForce Pro WF-7840 Wireless All-in-One
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Epson WF-7840 at a Glance
| Specification | Detail |
|---|---|
| Printer Type | Inkjet |
| Functions | Print, Copy, Scan, Fax |
| Maximum Print Size | 13″ x 19″ (Wide-Format) | Connectivity | Wireless (802.11a/b/g/n/ac), Ethernet, USB |
| Print Speed (B&W/Color) | Up to 25 ppm / 12 ppm |
| Paper Capacity | 500 sheets |
| Duplex Printing | Automatic |
| Display | 4.3″ Color Touchscreen |
| Ink Technology | DURABrite Ultra Pigment Ink |
| Control Method | Touchscreen, Voice (Amazon Alexa, Vera) |
Design and Build
The Epson WF-7840 is a substantial device, reflecting its wide-format capabilities and high paper capacity. With dimensions of 20.3″D x 38.4″W x 20.5″H and a weight of 45.4 pounds, it is built for a stationary role in an office environment. The design is functional and business-oriented, with a prominent 4.3-inch color touchscreen serving as the primary control interface for navigating its many features. The printer includes three paper trays, supporting a total input capacity of 500 sheets, which is designed to minimize interruptions for frequent reloading during high-volume tasks. The build is centered around accommodating wide-format media, with specific trays designed to handle larger paper sizes, though some media may extend outside the tray as noted in user feedback.
Performance and Features
Print Engine and Speed
At the core of the WF-7840 is Epson’s PrecisionCore Heat-Free technology. Unlike traditional thermal inkjet printers, this technology does not use heat to eject ink, which the manufacturer states can lead to fewer maintenance issues, lower energy consumption, and high reliability. The printer is rated for black-and-white print speeds up to 25 pages per minute and color prints up to 12 pages per minute. For copying, the maximum speed for black and white is listed as 40 pages per minute. The key performance differentiator is its wide-format capability, producing prints up to 13″ x 19″ and borderless prints up to 11″ x 17″, making it suitable for oversized documents, presentations, and technical drawings.
Ink and Output Quality
The printer uses Epson’s DURABrite Ultra pigment inks. These inks are formulated to dry quickly on the page, which helps produce smudge-resistant prints—a feature noted by users who highlight printed documents without issue. The pigment-based nature of the ink also contributes to water and fade resistance, aiming for professional-quality, archival output. The printer offers a high resolution of 4800 x 2400 dpi for detailed images and text. It is important to note that the manufacturer specifies this product uses only genuine Epson-brand cartridges, stating that other brands may not function properly.
Connectivity and Mobile Printing
Connectivity is a strong suit for the WF-7840. It features built-in dual-band wireless (802.11a/b/g/n/ac) for cable-free network setup, along with Ethernet and USB hardware interfaces for wired connections. For mobile productivity, it supports Epson Connect solutions, including Epson Email Print and Epson Remote Print. It is also compatible with Apple AirPrint, Android printing services, and the Mopria Print Service, allowing printing from smartphones and tablets. The Epson Smart Panel app facilitates mobile setup, monitoring, and operation. Voice control compatibility with Amazon Alexa and Vera adds an additional layer of convenience for hands-free operation.
All-in-One Functionality
Beyond printing, the WF-7840 serves as a complete document workstation. It includes a color image scanner for digitizing documents, a copier, and a fax machine. Automatic duplex (two-sided) printing and copying are standard, helping to save paper. The large paper capacity and automatic document feeder streamline multi-page jobs for scanning or copying.
Security Features
The manufacturer includes built-in security features designed for the office. These include a control panel lock to prevent unauthorized access to settings and encryption capabilities to help protect sensitive data during transmission. Specific details on the encryption standards or other security protocols are not listed in the provided data.
Setup, Support and Ownership
Setup involves connecting to power and a network, with the Epson Smart Panel app available to guide wireless configuration from a mobile device. The printer comes with a quick setup guide, a CD-ROM with drivers, a power cord, and a starter set of four DURABrite Ultra ink cartridges (black, cyan, magenta, yellow). Ownership considerations center on ink supply and firmware. The requirement for genuine Epson cartridges is a significant factor for long-term operating costs. User reviews frequently mention the printer’s persistent prompts for firmware updates, which some users associate with ink cartridge compatibility management. The product is backed by a one-year limited warranty from Epson.
What Owners Say
Owner feedback presents a generally positive but nuanced picture. The printer holds a rating of 3.9 out of 5 stars. A significant majority of reviewers award five stars, praising the print quality, wide-format utility, reliability, and the value it provides for 11″ x 17″ printing, such as for architectural drawings. Many note the ink dries quickly, preventing smudges. Several long-term users report years of dependable service from previous Epson WorkForce Pro models, which influenced their repurchase.
However, a notable portion of one-star reviews focuses on a single, recurring issue: firmware updates. Multiple users report that the printer frequently prompts for firmware updates and believe these updates are primarily intended to restrict the use of third-party or remanufactured ink cartridges, forcing the use of genuine Epson supplies. Some users choose to ignore these update prompts entirely. Other criticisms mentioned by a smaller number of users include occasional connectivity setup challenges and the fact that 11″ x 17″ paper does not fully retract into the input tray.
Pros and Cons
Pros
- Professional wide-format printing up to 13″ x 19″
- Versatile all-in-one functionality with print, copy, scan, and fax
- High 500-sheet paper capacity with automatic duplexing
- Extensive wireless and mobile printing connectivity options
- Fast-drying, smudge-resistant DURABrite Ultra pigment ink
- Large 4.3-inch color touchscreen for easy navigation
Cons
- Requires genuine Epson ink cartridges, limiting third-party options
- Frequent firmware update prompts perceived as restrictive
- Large physical footprint due to wide-format design
- May not match the ultimate speed of laser printers for very high-volume text
- Some users report occasional wireless setup difficulties
Who Should Buy It (and Who Should Skip It)
The Epson WF-7840 is an ideal fit for small to medium-sized businesses, architectural or engineering studios, real estate offices, and creative professionals who have a demonstrated need for wide-format printing alongside standard office tasks. Its high paper capacity, all-in-one features, and robust connectivity make it a strong candidate for a busy workgroup that values the ability to print impactful presentations, technical drawings, or marketing materials in-house without outsourcing.
This printer is less suitable for environments that require the absolute highest text-printing volume at the lowest cost-per-page, where a monochrome laser printer might be more economical. Individuals or offices that strongly prefer using third-party or remanufactured ink cartridges to reduce costs may find the manufacturer’s firmware approach frustrating. Those with very limited desk space should also consider the printer’s substantial dimensions. For general home use without wide-format needs, a smaller, more basic all-in-one would likely be more appropriate and cost-effective.
Final Verdict
The Epson Workforce Pro WF-7840 Wireless All-in-One carves out a specific and valuable niche. It successfully bundles high-volume office functionality with genuine wide-format capability in a single, network-ready device. Its performance, driven by PrecisionCore technology and DURABrite Ultra ink, is geared towards productivity and professional output. The extensive wireless and mobile printing features provide the flexibility modern offices demand, while the large paper capacity and auto-duplexing support efficient workflow management.
The primary consideration for potential buyers revolves around the ecosystem. The printer’s design and firmware strategy firmly tie it to Epson’s genuine ink supplies, which is a significant factor for total cost of ownership. For businesses that prioritize reliable, professional wide-format output and are comfortable operating within the manufacturer’s supply chain, the WF-7840 represents a capable and versatile solution. For those exploring other office tech, our expert reviews on ergonomic seating or guides on integrating AI smart home devices may also be of interest.
FAQs
What is the maximum paper size the Epson WF-7840 can print?
The Epson WF-7840 is a wide-format printer capable of producing prints up to 13 inches by 19 inches. It can also print borderless documents up to 11 inches by 17 inches. This makes it suitable for oversized documents like posters, presentations, architectural plans, and marketing materials.
Can I use third-party or refilled ink cartridges with this printer?
The manufacturer explicitly states that this product uses only genuine Epson-brand cartridges and that other brands may not function properly. User reviews frequently indicate that the printer prompts for firmware updates that some believe are designed to detect and restrict non-genuine cartridges. Successful use of third-party inks is not guaranteed and may be challenging.
Does the Epson WF-7840 support automatic two-sided printing?
Yes, the Epson WF-7840 features automatic duplex printing. This means it can automatically print on both sides of the paper for supported print jobs, which helps save paper and is a standard feature for office-oriented printers. It also supports automatic two-sided copying.
What mobile printing options are available?
The printer offers extensive mobile printing support. You can print using Apple AirPrint for iOS devices, Android printing services, and Mopria Print Service. Epson also provides its own suite of Epson Connect solutions, including the ability to print via email or remotely over the internet, and the Epson Smart Panel app for setup and control. For more on connected devices, see our look at the latest in audio technology.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.