“What does bp ink mean for sublimation ink? I have four different colors of ink but I need five for my Epson expression 7750”

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• Two different type of Black Inks. "BK" is the black ink used to print document text. The "PB" photo black is used by the printer when printing photos. Hope this helps!

  Answered by TROY 6 years ago

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• the ink supply labeled BK is for black text. The ink supply labeled PB is for photo black. PB is used in combination to give a higher quality image over the ET printer with only 4 ink supplies.

  Answered by RichP 6 years ago

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