https://www.weblio.jp/content/活字化 (日本語活用形辞書)

It's really just sense 2 of 活字 plus 化, but yes it's wider than physical printing.

@@ -12,0 +13 @@
+<xref type="see" seq="1208300">活字・かつじ・2</xref>

G n-gram: 9198
not in any reference; i conjectured the reading and meaning

not necessarily SoP as the term is still in use even if movable types are obsolete.  
one web page even uses 活字化 to refer to publishing manuscripts online by typing its content (similar to aozora)