A display has plural pixel groups each having plural color pixels. In some examples, the methods, data processing devices and computer readable media may be arranged to encrypt the data passed to the network when the data stored in the backing storage device is in unencrypted form. The first sleeve has at the first end, a first attaching member adapted to attach to the liquid container. When the integrated value of saturating amount reduces to a predetermined value or less, a control mode is switched to feedback control.