Uh, that form is for cash RECEIVED ...
Right you are. The depositor doesn't report anything, the Bank has to report cash deposits of $10,000 or more on FinCEN form 112.
Which begs the question, how does the IRS know that a small business is depositing multiple smaller cash deposits if the bank doesn't report it?
The bank does report it if it looks like “structuring”. A business can avoid the reporting by filing a form stating intention of multiple deposits.
Banks and financial institutions are required to be on the lookout for evidence of structuring, among other things, or face huge fines themselves.