Testing was commissioned by Epson and conducted by Keypoint Intelligence. One specific model was selected from color laser multi-function printers in the 65-70ppm class. Epson WorkForce Enterprise WF-C21000 with 100ppm (equivalent model in Europe was used during the evaluation). This data is as of September, 2020. Devices were tested in default mode as per Keypoint Intelligence’s proprietary standard energy consumption test methods. Calculations were based on a weekday workload of 2 x 4 hours printing + 16 hours in sleep/standby mode, and weekend energy use of 48 hours in sleep/standby mode. A total of 69 pages of workload test pattern using DOC, XLS, PPT, HTML, PDF files and Outlook email messages were printed six times in each 4-hour printing period.
Annual CO2 output calculations were based on JEMAI-LCA Pro, Cedar tree CO2 absorption calculations were based on Japan Forestry Agency standards of 8.8kg CO2 per annum per tree.
Statistics above are based on results from internal testing conducted by Epson. Comparison models were selected from among the top-selling 50% of A4 color laser printers (21-30ppm class) listed in IDC Worldwide Quarterly Hardcopy Peripherals Tracker 2019Q3 data CY2018Q4-CY2019Q3 results. The volume of consumables and replacement parts needed to print 200K pages was calculated by Epson based on yields published by the manufacture for each model. Quoted yields are stimulated figures calculated by Epson based on ISO/IEC24712 methodology.