| 摘要 |
PURPOSE:To lessen the omission of printing, by a method wherein in the printer which carries out halftone printing by changing the density of color development by the change of the temperature of heat generation, the rubber layer of the platen roller for the purpose of forcing a printing paper onto a printer head is thinned and hardened. CONSTITUTION:In the printer which carries out halftone printing by changing the density of color development by the change of the temperature of the surface rubber layer of the platen roller 2 for the purpose of forcing a printing paper 3 onto the printer head 1 equipped with the heating element is made to be of 2mm. max. Then, the rubber hardness of the rubber layer should preferably be made to be of 60 deg. min. |
