Wet wiping processing is performed on an ink ejection opening forming surface of a print head by use of a wiper. Further, the processor may operate in the secure execution mode by executing a secure operating system code segment. Methods of use comprise contacting food surfaces or food contact surfaces with the compositions of the present invention. In configuring disc control information within a management area of an optical disc, the method includes recording a plurality of recording speed informations and a plurality of write strategies respectively associated with corresponding recording speeds within the disc control information wherein one of the recording speed informations is a basic recoding speed information. Thus the optical elements may be volume phase gratings or suitable such diffractive elements. A capillary needle is stuck into the trapped cell to inject an injectant.