noun
the press; in the newspapers
Refers to the medium of newspapers as a public forum; often used in phrases like 新聞紙上をにぎわす (to be much talked about in the newspapers) or 新聞紙上で発表する (to announce in the newspapers).
その事件は新聞紙上をにぎわした。
The incident was much talked about in the newspapers.
社長は新聞紙上で謝罪した。
The company president apologized in the newspapers.
Compound of 新聞 (newspaper) + 紙上 (on paper, in print). The reading しじょう for 紙上 is standard in this context.