孔こう版はん

noun

mimeograph; stencil printing

Refers to a printing method using a stencil or screen, historically common for duplicating documents. The term is somewhat dated but still used in technical contexts.

• 昔むかしの学がっ校こうでは、テストを孔こう版はんで印いん刷さつしていた。

  In old schools, tests were printed using a mimeograph.