These feeders utilize two separate scanning sensors—one for the front and one for the back.
You regularly scan double-sided documents, manage high volumes (50+ pages at a time), or need to digitize archives quickly.
If you are looking for specific hardware, retailers like CDW or B&H Photo Video offer detailed filter options to help you find MFPs with single-pass duplexing capabilities. News Understanding the lingo: ADF, DADF and RADFs difference between spdf and dadf best
High-end DADFs can reach scanning speeds of up to 270 impressions per minute (ipm) .
Frequent flipping in an RADF can cause "dog-ears" or tears on delicate sheets; SPDF protects the integrity of your originals. Which One Should You Buy? News Understanding the lingo: ADF, DADF and RADFs
Fewer moving mechanical parts mean the scanning process is quieter, which is ideal for open-office environments.
However, understanding their technical nuances—and how they differ from older tech like RADF—is key to identifying which is "best" for your office workflow. SPDF vs. DADF: The Core Differences Fewer moving mechanical parts mean the scanning process
For a modern business, an SPDF or DADF is almost always the better investment for several reasons:
Because the paper is not bent or flipped internally, there is a much lower chance of jams, especially when scanning thin or older, fragile documents.
When choosing a high-performance multifunction printer (MFP), the terminology around document feeders can be confusing. The terms (Single Pass Document Feeder) and DADF (Duplexing Automatic Document Feeder) are often used interchangeably because they both describe the pinnacle of scanning efficiency.