Prosecuting counsel Anna Price said Casoria had admitted possessing a small number of child images of the worst type, featuring youngsters aged between six and 12 at a hearing last July.
But he denied a charge of distributing indecent images claiming he had simply sent them to himself rather than others and that matter was discontinued.
He was handed an 18-month community order and ordered to carry out 150 hours of unpaid work.
She told how a separate police investigation in Essex found Casoria had sent a Kik user the image of a young girl in April 2016.
He was interviewed and admitted he had pretended to be a 13-year-old girl and had engaged in sexualised chat with another user but denied sending the image.
“He told officers he must have sent it in error,” the barrister added.
Simon Killeen, defending, asked the judge to consider what difference that charge would have made to the sentence had the matter been known last July.
“This involves one image sent three years ago. This is not a case of him carrying on offending,” he said.
Judge Huw Rees told Casoria: “I hope you have benefited from the community order and that it has straightened out your thinking pf this avile activity.”
He ordered the community order be extended by six months and Casoria should attend a further six days of rehabilitation with the Probation Service.
Ruthin factory supervisor had indecent images of children
A factory supervisor who had a small number of child sexual abuse images of the worst type, featuring youngsters aged between six and twelve being abused and with bondage, received an 18 months community order on Friday.
Martin Casoria, aged 59, of Haulfryn, Ruthin, admitted possessing indecent images and must do 150 hours unpaid work and a rehabilitation activity.
Judge Huw Rees at Caernarfon crown court made a sexual harm prevention order for five years and the defendant must register as a sex offender for the same period and pay £340 costs.
Prosecuting counsel Matthew Curtis said Casoria told police he had pretended to be a girl of 15 and used KIK Messenger.