What Is IPM in Printers? Speed Measurement Explained

What Is IPM in Printers?

IPM stands for images per minute, a metric that describes how many printed sides a printer can output in one minute. Each side of a sheet counts as one image, so a two-sided sheet produces two images. This makes IPM a more accurate measure of throughput when you print on both sides.

Manufacturers typically list both pages per minute (PPM) and images per minute (IPM) on spec sheets. PPM is the speed for single-sided printing, while IPM takes duplex output into account. Understanding the difference helps you predict how fast a printer will handle your typical jobs. For a closer look at PPM, see our guide on pages per minute.

IPM vs PPM: The Difference

The key difference between the two metrics is how they count output. PPM counts entire sheets, regardless of whether they are printed on one or both sides. IPM counts each printed side as a separate image. For duplex printing, a sheet printed on both sides counts as two images, so the IPM number is typically lower than the PPM rating for the same printer.

Duplex printing requires the sheet to be reversed and sent through the imaging process again, so it takes longer than single-sided printing. That is why IPM gives a more realistic picture of throughput for two-sided documents. When you see both figures, PPM describes the fastest single-sided speed, while IPM describes the duplex speed.

The table below summarizes the main differences.

Why IPM Matters for Real-World Documents

In a typical office, many documents are printed on both sides to save paper and reduce file thickness. Reports, contracts, and meeting handouts are often duplex. If you print this way, IPM is the number that predicts how long you will wait at the printer. A model with a high PPM but a low IPM may feel slow when you run duplex jobs.

Even for single-sided tasks, IPM can give you insight into how the printer handles complex pages. If the IPM is much lower than PPM, the printer may struggle with graphics or high-resolution content. Use IPM as an extra data point when evaluating performance. For models that excel at two-sided printing, check our duplex printer recommendations.

How to Use IPM When Comparing Printers

When comparing printers, pay attention to both PPM and IPM. Determine your mix of single- and double-sided printing. If you mostly print one-off pages, PPM matters more. If you routinely duplex, weight IPM more heavily.

Here are a few tips for using IPM figures:

Look for IPM values that correspond to duplex mode; some manufacturers provide a separate duplex IPM.

Consider whether color IPM is listed; color printing is often slower than monochrome, so the color IPM will be lower.

Remember that IPM does not include warm-up time or first page out, which can affect real-world delays.

For specific model recommendations, browse our all-in-one printer picks or laser printer lineup.

Limitations of IPM Figures

IPM ratings are not governed by a universal standard. Manufacturers use their own test documents, resolution settings, and measurement methods. That means a rating from one brand may not be directly comparable to another. Even within a brand, a model may have separate IPM values for single-sided and duplex, or for color and monochrome.

Real-world speeds also depend on document complexity, quality settings, paper type, and connection method. Use IPM as a relative guide, not an absolute promise. It is most useful when you compare models within the same product category and when you rely on the same manufacturer's measurement methodology. For more on how printing volume affects lifespan, see our duty cycle guide.

How IPM Fits Into Printing Standards and Efficiency

While the exact IPM measurement is left to manufacturers, printer communication standards are set by industry bodies. The Printer Working Group (PWG) develops protocols like IPP Everywhere, which allow computers and mobile devices to print to networked printers without vendor-specific drivers. These standards ensure that your device and printer communicate correctly, but they do not standardize how speed is measured.

Energy efficiency programs also consider print speed. ENERGY STAR's imaging equipment criteria include speed as part of the product's energy-use profile. A printer with a high IPM can still earn ENERGY STAR certification if it manages power consumption well. When you shop, look for the ENERGY STAR mark to identify efficient models.

For mobile printing, the Mopria Alliance provides certified print and scan software that works across Android, Windows, and other platforms. These certifications focus on compatibility, not speed, but they ensure that duplex print speeds and other features are accessible from your devices.

What to pick for your use

Questions

What does IPM stand for?

IPM stands for images per minute. It measures how many printed sides a printer can produce in one minute, counting each side of a sheet as one image.

How is IPM different from PPM?

PPM counts entire sheets, regardless of whether they are printed on one or both sides. IPM counts each side individually. For duplex printing, a two-sided sheet counts as two images, so IPM is typically lower than PPM.

Why do printers list both PPM and IPM?

PPM gives the single-sided speed, which is useful for simple office tasks. IPM gives a more realistic speed for duplex printing, which is common in business environments. Listing both lets you choose the metric that matches your workflow.

Is IPM always lower than PPM?

Usually, yes. Because duplex printing requires extra paper handling and two imaging passes, the number of sheets printed per minute is lower than single-sided printing. However, the exact ratio varies by model and how the manufacturer measures it.

Does IPM affect print quality?

No. IPM is a speed rating, not a quality rating. Print quality depends on resolution, ink or toner, and paper type. A printer can have a high IPM and still produce poor quality if the other components are inadequate.

How can I find a printer's IPM rating?

Check the manufacturer's spec sheet for the term IPM or images per minute. Some models list IPM only for duplex mode, while others provide a general figure. Compare IPM across models from the same manufacturer for a fair assessment.