Digital image recording apparatus and method

摘要

In a digital image recording apparatus, an image processing is carried out on a first digital image signal obtained by sampling at a predetermined density an image signal representing an original image. The image processing is for increasing the amount of information carried by the first digital image signal and reducing frequency components of the first digital image signal which are higher than the Nyquist rate of the first digital image signal, thereby obtaining a second digital image signal. The second digital image signal is reproduced on a recording medium at a density higher than the predetermined density, thereby forming an image which is higher in resolution than that obtained from the first digital image signal and equal to that obtained from the first digital image signal in size.