ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR Epson WorkForce WF-3640DTWF, Inkjet, Colour printing, 4800 x 2400 DPI, A4, Direct printing, Black Epson WorkForce WF-3640DTWF. Print technology: Inkjet, Printing: Colour printing, Maximum resolution: 4800 x 2400 DPI, Print speed (colour, normal quality, A4/US Letter): 20 ppm. Copying: Colour copying. Scanning: Colour scanning, Optical scanning resolution: 1200 x 2400 DPI. Faxing: Colour faxing. Maximum ISO A-series paper size: A4. Wi-Fi. Direct printing. Product colour: Black https://www.digitaltrends.com/printer-reviews/epson-workforce-wf-3640-review/ The printer industry is a fairly predictable one, but once in a while we're treated to interesting technology. Hewlett-Packard, for example, last year introduced its Officejet Pro X, a desktop printer series that uses an inkjet technology called PageWide,... Fast print speed, Very good image quality on plain paper, Duplex printing, ADF, Two paper trays More expensive than consumer MFPs, Copying speed could be faster As with other Workforce printers, Epson targets this MFP toward the small business market. It's certainly a terrific MFP for that environment, but we think it's just as useful at home. Yes, you could argue that the extra paper tray, fax, ADF, and price ...