4-21BJC-5000Part 4: Technical Reference2) Nozzle arrangementThe bubble jet nozzles are placed 1/360 inch apart in a vertical array.The black BJ cartridge has 128 nozzles. On the color and photo BJ cartridges, thefirst 24 nozzles are used for yellow ink, the second 24 nozzles for magenta ink, thethird 24 nozzles for cyan ink, and the remaining 64 nozzles for black ink. The colorand photo BJ cartridges have a total of 136 nozzles.3) Signal contact (contact pad)2829242526232221201617181927153 11 12 13 1479104 6 52 18BJ CartridgeFigure 4-16 Nozzle ArrangementNozzle 1Nozzle 128Nozzle 1Nozzle 136Yellow Nozzles 1 to 24Magenta Nozzles 25 to 48Cyan Nozzles 49 to 72Black Nozzles 73 to 136Black BJ Cartridge Color BJ CartridgePhoto BJ CartridgeFigure 4-17 Contact Pad