Various embodiments perform sample rate conversion of a sample series at an input rate to an output rate. The method includes the steps of:encoding the rows of at least the user data sub-block separately or in groups using a horizontal error correcting code over a second Galois field larger than the first Galois field to obtain horizontal parities, andembedding the horizontal parities as additional layer in the error correcting code. An effluent stream from the process to waste treatment contains less than 50 ppm metal ions. At the third position, the material in the injection passage and the material in the runner groove are deposited to each other when the injection passage is shut off from the communicating passage and the third passage 374 is communicated with the runner groove. In the case where the above prescribed condition is satisfied, the control section stops motion of sheet feeding from the above sheet feed tray while leaving sheets in the above sheet feed tray.