I'm missing one ink cartridge for my printer, can I print without it?

I have a canon mp530. I bought a package of 4 ink cartridges, black, yellow, magenta and cyan, but I forgot that there's a space for a second black ink cartridge. The printer needs 8bk and 5bk black ink. Why are there two black ink cartridges? More importantly, can I still get it to print without the second... show more I have a canon mp530. I bought a package of 4 ink cartridges, black, yellow, magenta and cyan, but I forgot that there's a space for a second black ink cartridge. The printer needs 8bk and 5bk black ink. Why are there two black ink cartridges? More importantly, can I still get it to print without the second cartridge?
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