Assertion: flexographic printing | /r/AtLocation | wide use
Facets:
value: for other uses
type: PURPOSE
value: for books
type: PURPOSE
Source sentences:
text: Letterpress printing was the normal form of printing text from its invention by Johannes Gutenberg in the mid-15th century and remained in wide use for books and other uses until the second half of the 20th century, when offset printing was developed.