There is one lab that has a Lightjet, called Aperture Pro digital lab. They are located on the road that leads from the thai airways office on Silom RD to ChongNonsi BTS station, same side as Thai airways, about 100 m along. They only operate their machine about 3 or 4 days a week ate prsent so it could take some time. Currently, i understand they mainly take clients with a substantial amount of work, but you maybe able to negotiate something.
the owner is falang, and can be contacted by email on
cameronjhansen@yahoo.co.uk.
The manager of the shop doesn't speak much English, so polish up your issan language.
They produce great quality, i just was there last week and am happy with the outcome.
My experiences with IQ lab have been pretty negative.