PROBLEM TO BE SOLVED: To simultaneously confirm a pH value of urine and a color of the urine itself while urinating.SOLUTION: A covering material 5 arranged at a side of a top sheet 3 of an absorber 4 has a brightness (JIS P8148) of not less than 57% and has a printing part 6 on which an ink composition containing a pH indicator which changes a color according to the pH value of the urine by contact with the urine. The printing part 6 is formed with an area at a ratio of 30% or less with respect to the total area of a toilet sheet 1. The ink composition is constituted by dissolving or dispersing one or more kinds of the pH indicator, a resin having a hydrophilic group and a hydrophobic group and water-absorbing powder in a solvent.COPYRIGHT: (C)2012,JPO&INPIT【課題】排尿時に尿のpH値と尿自体の色とを同時に把握できるようにする。【解決手段】吸収体4のトップシート3側に配設される被包材5は、白色度(JIS P8148)が57%以上であり、尿との接触により尿のpHに応じて変色するpH指示薬を含有するインク組成物が印刷された印刷部6を有し、前記印刷部6はトイレシート1全体の面積に対し30%以下の割合の面積で形成され、前記インク組成物は、1種以上のpH指示薬と、親水基及び疎水基を持つ樹脂と、吸水性粉末とを溶媒に溶解又は分散させて構成する。【選択図】図2
