Abstract: A technique capable of obtaining the displacement amount of the ejection position of a reaction liquid without changing a test pattern according to the configuration of the ejection head is to be provided. A test pattern including a detection pattern, which extends in a predetermined direction and in which, if divided into two, at least two inks and the reaction liquid are ejected to one area and only the at least two inks or the at least two inks and the reaction liquid of an amount that is smaller than that of the reaction liquid ejected to the one area are ejected to the other area, is printed, and the optical characteristics of the printed detection pattern are obtained. Further, based on the obtained optical characteristics of the detection pattern, the displacement amount of the ejection position of the reaction liquid in the predetermined direction is obtained.

Abstract: A novel information recording medium comprising a substrate and a recording layer for writing information by means of laser beam which is provided on the substrate is disclosed. The recording layer contains an organic metal complex compound and a sensitizing agent for laser beam. Alternatively, the recording layer contains an organic metal complex compound and this recording layer is arranged in contact with a layer of a sensitizing agent for laser beam.

Abstract: A radiation image storage panel comprising a support and a phosphor layer provided thereon which comprises a binder and a stimulable phosphor dispersed therein, characterized in that said stimulable phosphor has a particle size distribution showing two or more peaks.