A semiconductor memory device having an error check and correction type error recovery circuit in which disposition of ECC cells is improved. The toner includes a specific amount of a shear buffer. The terminal contacts are spring loaded and maintained in spaced apart and staggered relationship so that only one of the terminal contacts remains in contact with the bridge contact when it is retracted by the bowed spring. The ACI suppression scheme can also be applied to SAM with the modified RRC and to IOTA OFDM with a modified IOTA. In addition, an ink mist collecting unit having a positive electrode is employed to collect floating ink mist.