[12-Cartridges] Specially formulated black ink for the following Data-Pac Digital Postage meters: DP 100W, DP 140W, DP 200W, DIB-200W LPM, DP 200B, DP 240B, DIB-C, The Curve Specially formulated black ink where long decap times and high performance start up is required between uses. Used in such applications as in line addressing on inserters and in some Postage meter applications for the 45A cartridge and in stop / start production runs in the printing and packaging market. Very long decap times with clean image and good density, best used on porous substrates. Long Decap Time Compares to Data Pac® DIB-C 0091 & HP45.