The California Public Records Act declares that access to information concerning the conduct of the people's business is a fundamental and necessary right of every person in the State, that public records are open to inspection at all times during regular office hours, and are subject to inspection and copying by every person except as provided in the Act.
6254 (j) 8. Library circulation records kept for the purpose of identifying
the borrower of items available in libraries, and library and museum materials
made or acquired and presented solely for reference or exhibition purposes.
This exemption does not apply to records of fines imposed on the borrowers.
http://caselaw.lp.findlaw.com/cacodes/gov/6250-6270.html