The simplest possible explanation of what a multifunction printer does
Multifunction printer is a marketing term hiding a fairly simple piece of office hardware. The shorthand MFP, written on every dealer invoice in Europe and North America, describes a single chassis that combines four older office machines into one body. Print. Copy. Scan. Fax. The four functions sit inside one device, share one paper path, and connect to the office network through one Ethernet cable.
Strip the marketing names off and the entire category fits in two paragraphs.
The two paragraph definition
An MFP is a desk sized or floor sized office machine that prints from a computer over the network, copies an original document into a duplicate without a computer, scans an original document into a digital file destined for email or a folder or a cloud service, and on most models faxes a document over a phone line or the internet. The four functions run on shared internal hardware. The same toner cartridges feed the print engine for both print jobs and copy jobs. The same scanner glass and document feeder serve both copy jobs and scan jobs. The same paper trays serve both print and copy.
A user walks up, places paper on the glass or in the feeder, taps the touchscreen panel to choose copy, scan, or fax, and presses start. A user at a computer opens print dialog, picks the MFP from the list, and sends a job over Wi Fi or Ethernet. The MFP queues both kinds of work, processes them in order, and outputs paper or digital files as appropriate. That is the entirety of what an MFP does as a category. The everyday distinction between an MFP, a printer, and a copier is laid out at How a photocopier differs from a printer an MFP and a copier in everyday office life.
Print, copy, scan, fax — what each function actually means
Print means the MFP receives a job from a computer over the network and produces paper output. The job arrives as a print stream in PCL, PostScript, or PDF Direct format. The MFP rasterizes the stream onto its drum and produces the page. Print speed sits between 20 and 70 pages per minute on office class machines, between 25 and 130 pages per minute on production class units. Print is the function that runs most often in a typical office, often above 80 percent of total daily activity.
Copy means the MFP scans an original sitting on its glass platen or moving through its automatic document feeder and produces an immediate paper duplicate. No computer involved. The original goes in. The duplicate comes out. Copy quality on a modern MFP runs at 600 to 1200 dots per inch, indistinguishable from print quality from a computer. The marketing labels three in one, four in one, and five in one, all of which describe the function count of an MFP, are explained at The real differences between three in one four in one and five in one printers.
Scan means the MFP digitizes an original into an image file. Output formats include single page TIFF, multi page PDF, searchable PDF after OCR, JPEG, and PNG. Destinations include email through SMTP, a Windows shared folder through SMB, an FTP server, an SFTP server, OneDrive, SharePoint, Google Drive, Dropbox, Box, and Egnyte through their respective APIs. Scan resolution sits between 200 and 600 dots per inch on most office MFPs, with 1200 dpi available on higher segment units. Scan is the function that justifies the MFP price gap above a single function printer, since no printer can scan paper into digital systems.
Fax means the MFP sends a digital image of an original through a copper phone line using the T.30 protocol or through the internet using T.38 over a SIP server. Fax usage in 2026 has dropped to under five percent of typical office volume in most regions. Healthcare in the US, legal practice in many EU jurisdictions, and certain government workflows continue to require fax for compliance reasons. Most MFPs ship with the fax module as an optional add on at 100 to 400 euros above base price.
What is inside the box
The hardware inside an MFP can be split into three layers. The print engine. The scanner. The controller.
The print engine is the same hardware as a standalone laser printer. A photosensitive drum, a laser scanner, a toner supply, a developer unit, a transfer roller, and a fuser. Color machines run four print engines stacked in line for cyan, magenta, yellow, and black. The print engine handles both print jobs from the network and copy jobs from the scanner. Output speed is determined by the engine, not by the function being run.
The scanner sits on top. It includes the glass platen for flat originals, the automatic document feeder for stacks of originals, a CCD or CIS sensor that converts reflected light into pixels, and the image processing electronics that turn raw sensor data into clean rasterized images. Modern scanners run at 50 to 130 originals per minute single sided through the document feeder, half that for double sided originals on conventional ADF, and full speed on single pass duplex ADF found on higher segment units.
The controller is the brain. An embedded computer running custom Linux on most brands. The controller manages the touchscreen panel, the print queue, the scan workflows, the address book, the user authentication, the cloud connectors, and the fleet management protocols. It also stores the hard drive that caches recent jobs, holds the address book, and stores held print jobs released by PIN. Hard drives run between 320 GB and 1 TB and are encrypted at AES 256 on any model sold in the last six years.
What an MFP is not
An MFP is not a server. It does not run office applications, host shared files, or replace any other infrastructure in the office. It is a paper imaging device with network plumbing.
An MFP is not the same as a copier from before 2000. An analog copier in 1990 had no network connection, no hard drive, no scan to email, and no print queue from a computer. The MFP added all of those, and over time the digital additions became the price gap reason between brands at the same speed class.
An MFP is not a desktop printer with a scanner stuck on top. The chassis is built around the scanner platen, with the print engine added underneath. Paper paths, finishing options, multiple tray configurations, and durability ratings on an MFP all run an order of magnitude beyond a desktop unit. Where a desktop printer earns its keep against an MFP in specific scenarios is at When a single function printer makes more sense than a multifunction one.
An MFP is not a production press. Production class machines like Canon imagePRESS, Xerox Versant, and Konica Minolta AccurioPress have higher speeds, broader paper handling, color calibration tools, and finishing options that go past anything an office MFP carries. The line between office class and production class equipment is unpacked at How to tell whether you need an office class copier or a production class one.
How offices actually use the four functions
In a typical Spanish SMB of 25 staff printing 30,000 pages a month across all activity, the volume splits roughly into 24,000 pages of print, 4,500 pages of copy, 1,200 scans, and around 50 faxes. The print volume dominates because every email attachment, every contract, every spreadsheet, and every report runs through it. Copy volume is smaller because most documents originate digitally already. Scan volume tracks paper coming into the office: contracts received from clients, signed forms, printed invoices from suppliers, ID cards photographed on the platen.
The split shifts in different verticals. Legal firms run higher copy volume because of multi party document distribution and exhibit handling. Accounting firms run higher scan volume during tax season because of intake from clients. Healthcare practices run higher fax volume because regulatory frameworks still require fax in certain insurance and prescription workflows. Marketing and creative agencies run higher color print volume than monochrome.
How to evaluate one against another
Comparing two MFPs comes down to five numbers and one qualitative check. Pages per minute on the print engine. Pages per minute through the scanner. Recommended monthly print volume. Paper input capacity in sheets across all standard trays. First copy out time from sleep state. The qualitative check is whether the controller stack supports the cloud destinations the office actually uses, including OneDrive, SharePoint, Google Drive, Dropbox, and any document management system in place.
The dealer segment classification gives a fast shorthand for the price band, paper handling capacity, finishing options, and durability rating of an office MFP. Asking for a Segment 3 color machine produces a tighter quote in less time than asking for a regular color copier. The full mapping of segment numbers to feature expectations is at What the industry copier segments from one through six actually mean for you.
Brand differences in 2026 are smaller on the print engine than they are on the controller and the cloud connectors. Two MFPs from different brands at the same speed class produce roughly equivalent print and copy output. Where the brands diverge is in the marketplace of apps that runs on the controller, the smoothness of OAuth integration with Microsoft 365 and Google Workspace, the depth of integration with document management platforms, and the responsiveness of the dealer service network in a given country.
Multifunction printer is four older office machines compressed into one chassis with a network controller bolted on top. The chassis runs print, copy, scan, and fax through shared hardware. Everything else is variation on that one idea.