noun
form feed; page break
Computing term for a control character or command that advances to the next page or top of form, often abbreviated FF.
プリンターに頁送り命令を送る。
Send a form feed command to the printer.
このコードは頁送り文字（FF）を表す。
This code represents the form feed character (FF).
改ページ is a more general term for page break, while 頁送り specifically refers to the form feed control character or command in computing.
Compound of 頁 (page) and 送り (sending, feeding), literally 'page feed'. The reading ページおくり reflects the common use of ページ for 頁 in technical contexts.