Setting method of delay time in ink jet printing device

Abstract

Abstract PURPOSE:To make possible 1-point printing of plural heads without using any delay elements by so disposing the ink heads that the distances from recording paper surface are larger with the ink heads priforming prenting with greater delays. CONSTITUTION:When ink jet signals are simultaneously applied to ink heads Y, C, M, inks are simultaneously injected from the 3 ink heads, and the ink jet from the ink head Y is first projected onto the printing point P. Thereupon, the differences b1 and b2 between the distance of the ink head Y from recording paper surface and the distances of the ink heads C and M from the recording paper surface are so determined that when the priniting point P comes to the P1, P2 positions the ink from the ink heads C and M respectively arrive on the recording paper surface, in correspondence to the moving speed of the recording paper, the spacing a1, a2 between the respective ink heads and ink jet flying speed. Thereby, all the ink jets are projected to one preinting point P and printing is thereby accomplished.

Inventors

• 👤 Takeshi Takemoto
• 👤 Takuo Isayama
• 👤 Tsutomu Sato
• 👤 Takao Fukazawa

Bibliographic Details