Can we use TC to share files between two windows 7 computers and 1 mac?

We are a small business and we are looking to back up a mac and to share files between 2 windows 7 computers and 1 mac computer. Does the Time Capsule do this? I was also wondering if we can use it to enable wireless printing to a Ricoh Aficio MP C3500? I don't know much about computers and would appreciate any help I can get. Also is it possible to back up the windows computers onto the TC?

QA Apple Time Capsule

QA Apple Time Capsule

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