Answer
Apr 20, 2012 - 12:00 AM
Great question!
The difference is compatibility. The T088420 is compabtible with the following Epson printers:
C11CA46211, C11CA46211-N, C11CA47231, C11CA17201-N, C11CA44231, C11C688201-N, C11C688201, C11CA83251, C11C688231-N, C11C688232, C11C689201-N, C11C689201, C11C689231-N, C11C689231, C11CA25201, C11CA25201-N, C11CA25231, C11CA25231-N, C11CA46201, C11CA46201-N, C11CA21231, C11CA17201, C11CA17241, C11CA20201, C11CA20201-N, C11CA44231-N, C11CA83251
The T069120 is compatible with these Epson printers:
C11CA47231, C11CA44231, C11CA27201, C11CA46211, C11CA48231, C11CA49251, C11CA50201, C11CA50231, C11C650001, C11C657001, C11C676001, C11C689201, C11C689231, C11C690201, C11C696201, C11CA25201, C11CA25231, C11CA46201, C11CA21231, C11CA17201, C11CA17241, C11CA20201, C11CA49201, C11CA40201, C11CA18201, C11CA50201, C11C687201, 11CA58201, C11CA19201, C11CA27201