发明授权
US4774549A Photographic printer 失效
摄影打印机

Photographic printer
摘要:
A photographic printer is provided wherein the density of a negative is measured on the same axis on which and using common optical components with which the negative is subsequently printed. The printer includes apparatus for measuring both the scanned and large area transmissive density of the negative.
公开/授权文献
信息查询
0/0