Seiko Epson | Date Code Marking

Last updated: October 2025. Cipher tables and decoding methods verified against Epson Service Manuals for WorkForce Pro, EcoTank, and SureColor series.

You might ask, "Why doesn't Epson just print 'Made in May 2025'?" There are three critical reasons: seiko epson date code marking

Here’s a concise report on used on their products, components, and packaging. Last updated: October 2025

For products made before 2000 (Epson Stylus Color 800, etc.), the year digit represented the actual year (8 = 1998). Use the same YWW logic but add 1900. and SureColor series. You might ask

Y WW X