What Is Simplex Printing? When It Makes Sense

What is simplex printing?

Simplex printing is the process of printing on only one side of a sheet of paper. When you send a print job, the printer ingests the paper, applies toner or ink to the top face, and ejects the sheet. No paper is flipped or turned around inside the machine. This is the simplest and most universal printing mode, supported by every consumer and office printer on the market.

The term comes from the Latin word 'simplex' meaning single or simple, and it appears in printer specifications, driver menus, and user guides as a contrast to 'duplex' (two-sided printing). Many manufacturers use 'single-sided printing' interchangeably with simplex. When you open a print dialog, you will often see choices like 'One-sided,' 'Two-sided,' or 'Simplex/Duplex' under the finishing or layout settings. Selecting 'One-sided' forces simplex for that job.

Simplex is the fallback for any printer, even if it has a duplexer. The duplex mechanism (which flips the paper for a second pass) can be turned off for individual jobs or set as the permanent default. So understanding simplex is key to controlling how much paper and energy you consume on every print task.

Why simplex is the default for many printers

Simplex printing is mechanically simple. A single straight paper path from the tray to the output bin is all a printer needs. That simplicity keeps printers compact, reduces the number of moving parts, and lowers the risk of paper jams. For printers without an automatic duplexer, printing two-sided requires manually re-feeding the stack, which is tedious and error-prone.

Many budget-conscious buyers choose printers without a built-in duplexer, accepting that they can still print two-sided by hand. If you rarely print multi-page documents, that trade-off can be sensible. However, even entry-level models often include a duplexer as a minor upgrade, so it is worth checking the spec sheet before you buy. For an overview of affordable models that do include this feature, see our best duplex printers guide.

Because simplex does not require a paper reversal mechanism, it can be marginally faster for a single sheet. The paper travels a shorter path, and the printer does not pause to re-align the sheet for a second side. For a one-page job, the difference is negligible, but for a stack of single-page forms or receipts, it adds up. This is one reason why simplex remains the default in many office environments where speed is a priority.

When simplex printing makes sense

Simplex is the best choice whenever you need a quick, one-sided output. Here are typical scenarios:

• Draft documents and internal notes that you will edit or discard: printing on one side makes it easy to scribble comments or use the back as scrap paper.
• Forms, invoices, and legal documents that require a single signature or a fixed layout, where the back side must stay blank.
• Labels, envelopes, and specialty media such as photo paper, where printing on the back would waste material or damage the surface.
• Short documents of one or two pages, where the paper savings from duplex are insignificant.
• Output intended for a bindery or cutter, where one-sided pages are easier to assemble and trim.

When you should consider double-sided printing

For anything longer than a couple of pages, duplex printing saves a surprising amount of paper. The U.S. Environmental Protection Agency notes that the average office worker uses roughly 10,000 sheets of copy paper per year and that about 45 percent of those are recycled by the end of the day. That waste can be cut significantly by printing two-sided. The ENERGY STAR program explicitly encourages using double-sided printing and image combination modes on certified devices as part of its saving tips.

Many modern printers support duplex either automatically or manually. Automatic duplexing flips the paper internally, so you just choose the option in the print dialog. Manual duplex requires you to re-feed the printed pages, but it still reduces paper use. If your printer lacks any duplex capability, you can enable it in the driver preferences or during the print job. For a detailed comparison of automatic and manual options, see the guide to duplex printing and the related duplexer vs. manual duplex article.

Beyond paper savings, duplex printing also reduces energy use on a per-page basis because fewer sheets are processed. The ENERGY STAR certification criteria include a requirement for automatic duplexing on many product categories, so certified devices are likely to handle two-sided jobs efficiently. If you print large reports, presentations, or training materials, switching to duplex can halve your paper consumption and have a measurable environmental benefit, as the EPA's Reduce, Reuse, Recycle page emphasizes.

How to control simplex and duplex in your print settings

You are not stuck with whatever the printer defaults to. Every print driver, including those operating under the IPP Everywhere standard, gives you a per-job or default choice. The Printer Working Group (PWG) lists two-sided printing as a core feature in the IPP Everywhere specification, meaning that all modern printers and mobile clients can send a duplex request when you select it in the print dialog. The same applies to the Mopria apps used on Android and Windows.

If you want to make simplex your default because you print mostly one-page items, change the printer preference in your operating system or printer software. For occasional duplex jobs, override the default from the print dialog. Conversely, if your office prioritizes paper reduction, set duplex as the default and only switch to simplex for labels or special media. This flexibility lets you balance speed and efficiency for each document.

One caveat: even if a printer is IPP Everywhere compliant, the feature set available depends on the model. A printer without a duplexer will not accept a duplex request, but you can still print one-sided. Likewise, a printer with a duplexer can always be forced to simplex. Check the printer's manual for the exact menu location, because it varies by manufacturer.

The bottom line

Simplex printing is not a flaw or an outdated mode; it is the fundamental way every printer works. It is ideal for quick drafts, single-page forms, and special media. However, for multi-page documents, duplex printing saves paper, energy, and reduces waste. Use simplex when speed and simplicity matter, and switch to duplex when you need to be economical or environmentally conscious. Understanding the difference lets you make the right choice for every job.

If you are shopping for a new printer, decide whether you need automatic duplexing. For most home offices, a printer with a duplexer is a worthwhile addition. Compare models in our best all-in-one printers and best laser printers guides, and check our budget printer guide for options that still include duplex. No matter what you choose, you will control simplex and duplex through the same print dialog, so the only real cost is a few mouse clicks.

What to pick for your use

Questions

What does simplex mean in a printer?

Simplex means printing on only one side of each sheet. It is the opposite of duplex, which prints on both sides.

Is simplex printing faster than duplex?

Yes, for a single page. Simplex avoids the paper reversal step, so it can be slightly faster. For multi-page jobs, the difference is small because the printer still processes each side, but duplex saves paper.

Does simplex printing use less ink?

No, ink usage per page is identical. Simplex uses the same amount of ink as the first side of a duplex print. The only saving from duplex is in paper, not ink.

Can all printers print simplex?

Yes. Simplex is the base capability of every printer. Even printers without a duplexer print one-sided reliably. Duplex is an additional feature that may or may not be present.

How do I turn off duplex printing?

Open the print dialog, go to the finishing or layout settings, and select 'One-sided' or 'Simplex'. To change the default, adjust the printer preferences in your operating system or printer software.

When should I use simplex instead of duplex?

Use simplex for drafts, forms, labels, envelopes, photo paper, and any document where the back side should stay blank. For multi-page reports or presentations, use duplex to save paper and support environmental goals.