That doesn't matter. You still need to have excel open, and thus use it's API to give it commands. Everything iLogic/API does with excel is actually accessing the EXCEL API (it's just not visible to the user).
Everything in the inventor API does not support printing excel sheets. This would be done through the Excel Automation object from within the inventor API if it were possible though.
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Justin K Inventor 2018.2.3, Build 227 | Excel 2013+ VBA ERP/CAD Communication | Custom Scripting Machine Design | Process Optimization