This is latest type SPT510-35PL print head with new IC driver chip produced by Seiko.  Both new and old IC driver chips perform the same.

Original make in Japan SPT 508GS 12PL  print head for Seiko infinity challenger Large digital printer spare parts replacement

Original Seiko Spt1020 / 35pl Print head

Original Seiko Spt255/12pl Print head

Original Seiko Spt510 / 50pl Print head

Original Seiko Spt255 / 35pl Print head

Original Seiko Colorpainter 64s/100s Print head

Original OKI IP-4500 Print Head - U00044830100