japanese artist megumi igarashi could face up to two years in jail if convicted of obscenity .
in a case that has sparked accusations of heavy-handed censorship , artist megumi igarashi said she had done nothing wrong in handing out the code for a 3d printer .
` i am innocent because neither the data for female genitals nor my art works shaped like female genitals are obscene , she told journalists and supporters after the hearing .