The public use of personal seals in special industries and special identities is publicity. Such as the signature and endorsement of the bill, the private seal of the legal representative has publicity effect after the bank keeps the bill stub for future reference. The legal representative can't deny it because he doesn't know.
2, the legal effect of ordinary personal seal.
At present, the method of legal recognition is signature, because signature is unique and can reflect personal writing characteristics. Signature cannot be forged, even if it is forged, it can be distinguished by identification. The private seal can only reflect the name of the signer, but can't determine the true identity of the signer. When the seal owner uses the seal to conclude a written document and sign a contract, the author thinks that its effect should be equal to his signature or his handprint, which is binding on him and protected according to law.
Legal basis: Article 52 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment commits one of the following acts, and shall be detained for more than 10 and less than 15, and may be fined less than 1000 yuan; (1) Forging, altering or buying or selling official documents, certificates, certificates and seals of state organs, people's organizations, enterprises, institutions or other organizations.