belief that printed matter is reliable
Refers to the tendency to trust anything that appears in print, often used critically to describe uncritical acceptance of written information.
If you have a strong belief in the printed word, you end up assuming everything written in the newspaper is correct.
Compound of 活字 (movable type; printed characters) and 信仰 (belief; faith). The term likely emerged in the modern era with the spread of mass printing.