开云体育

There was a company in West Hartford CT which was pioneering a piezo
ink-jet head with extremely fine "resolution" -- Accent Color
Sciences (now bankrupt). There were a couple patents filed by them
in 1999 and 2000 which describe the remarkable resolution of the
print head. Look under assignee name (AN/Accent) field in the
advanced search engine at the www.uspto.gov While there was a lot
of interest from some of the cell phone manufactures, (if you wanted,
you could change circuitry on the fly) the economy took its toll.