Cal. Bus. & Prof. Code § 22462

(a) All records transmitted or distributed by a professional photocopier shall be accompanied by a certificate containing all of the following:
1. (1) An affidavit signed by the custodian of the original records that were reproduced for transmittal. It shall conform to the requirements specified in Article 4 (commencing with Section 1560) of Chapter 2 of Division 11 of the Evidence Code.
2. (2) An affidavit signed by the professional photocopier or his or her employee stating that the records shall be transmitted or distributed to the authorized persons or entities.
(b) The certificate shall bear the name, address, and registration number and county of registration of the professional photocopier. The custodian of records shall be entitled to a copy of the certificate, completed as provided in subdivision (a).
(c) The custodian of records shall not be liable for the improper release of the records when the records:
1. (1) Were released to a professional photocopier for the production of records under authorization or subpoena or other means.
2. (2) Were certified pursuant to this section.