In production printing, throughput metrics measured in metres per minute (m/min) describes the overall production efficiency of a complete printing workflow from pre-press to final finishing and logistics by tracking the amount of sellable output produced over a defined time period in meters of substrate printed per minute.
In industrial printing environments, throughput productivity is determined not only by the printing press’s rated speed but also by how consistently that speed can be sustained in real operating conditions while maintaining acceptable print quality. Manufacturers often publish a maximum speed rating because it provides a clear technical benchmark. However, this figure usually assumes ideal conditions where the press runs continuously on a substrate that allows the highest speed and does not consider how setup, equipment stability, or finishing may impact overall printing throughput metrics.
In practice, production environments rarely operate under such uniform circumstances. Roll-fed inkjet presses typically can run uncoated papers faster than coated papers, while lighter paper grammages often allow higher speeds than heavier or thicker materials, and if production site prints multiple job types across different substrates changeovers and different finishing may impact speeds.
This variability means that productivity cannot be calculated simply by multiplying the maximum speed by available production hours. Doing so ignores the reality that different applications require different quality settings, drying conditions, or ink densities that may influence the speed at which the press can operate while still delivering sellable output.
Why is blended speed the best measurement of printing throughput?
Blended speed is a practical way of estimating real productivity across a diverse job mix. Instead of assuming that every job runs at the same m/min value, blended speed accounts for the proportion of time the press spends producing different types of work.
The calculation begins by identifying the typical applications produced during a month and determining the realistic running speed for each at the quality level customers accept. If half of production runs at a higher speed and the remainder runs at slower speeds due to different substrates or coverage requirements, those proportions can be combined to produce a single representative throughput figure.
This approach provides a more accurate forecast of capacity because it reflects how the press operates in daily production rather than how it performs in a controlled demonstration. Printers evaluating new equipment often request sample runs at the quality levels their clients require for exactly this reason. A speed figure that is only achievable with unacceptable print quality or does not consider additional post-print processing provides little usable insight into real productivity.
How does uptime and maintenance influence throughput?
Throughput is heavily influenced by uptime, which represents the portion of scheduled production time when the press remains fully operational and capable of printing sellable output.
Even if two presses share the same rated m/min speed, their effective productivity can differ significantly if one system experiences more frequent maintenance interruptions or reliability issues. When a press must stop repeatedly for servicing or troubleshooting, the time lost directly reduces the number of metres that can be produced during the shift.
For example, two presses capable of operating at the same transport speed may produce very different throughput metrics across the same period of time if one maintains higher uptime due to stable operation and predictable maintenance schedules.
How does startup time and defective prints affect real throughput?
Not every loss in productivity appears as a full machine stoppage. Startup procedures at the beginning of a shift can consume valuable production time while systems stabilise, colour consistency is verified, and operators confirm that the first printed output meets quality standards. Even small delays at the beginning of each day accumulate over weeks of production.
Similarly, production problems do not always halt the press immediately. When an issue begins developing, the line may continue producing output that fails inspection until operators detect and correct the cause. These defective prints still consume ink, substrate, and production time, and they must later be removed or reprinted. The press may technically have been running during this period, but from a throughput perspective it produced no sellable work.
Inkjet press manufacturers like SCREEN often focus on balancing the long-term reliability of their systems with higher production speeds to maintain the most effective throughput metrics. Solutions that operate at higher speeds may result in more metres printed, assuming there are no stoppages, defects, or breakdowns, these providers instead focus on competitive speeds between 180m/min to 225m/min while driving uptimes exceeding 80% and maintaining consistent output, results in a higher real throughput.
How do prepress readiness and finishing affect press productivity?
Throughput also depends on how well the press is synchronised with the rest of the production workflow. If prepress files are delayed, if finishing equipment requires additional setup time, or if downstream systems cannot match the press’s production pace, the printing line may be forced to slow down or pause. These interruptions can occur even when the press itself is fully functional.
Effective integrated end-to-end (E2E) printing workflow with inline finishing configurations illustrate how effective communication between distinct systems facilitated through workflow management software like SCREEN EQUIOS that connect and allow the distinct steps in production to communicate to minimise manual touchpoints can maintain a higher throughput than other solutions that individually have higher speeds.
What is the most accurate way to measure printing throughput?
The most useful way to evaluate throughput is to measure the amount of sellable output produced over a defined period while accounting for real operating conditions. This includes the blended speed at which jobs are printed, the uptime of the press during scheduled production hours, and the time lost to startup procedures, changeovers, quality corrections, and finishing coordination. When these factors are considered together, throughput becomes a practical measure of manufacturing performance rather than a theoretical speed rating.
In production printing environments, profitability depends on how much reliable output a press produces over time rather than how fast it can theoretically run under ideal conditions. An inkjet press that operates consistently with stable quality and minimal interruptions may produce significantly more sellable work than a faster system that requires frequent adjustments or downtime that supports more digital printing agility. Throughput metrics are most effectively measured when considered as sustained printing instead of peak operating benchmarks in production digital printing.