New method of large ink supply without long tubing system for wide-format ink-jet printer

This paper explored the design of large ink supply system of ink-jet printer, which is in general installed in so-called wide format printer today. Subsequently, a new type of large ink supply system was presented to fulfill the fundamental functions that ink in the reservoir could be automatically delivered into the print head of printer by means of capillary force in nature. Moreover, the new system was characterized with no traditional long tubing portions such that pressure loss or vibration, due to long ink passage of tubing, could be eliminated. To achieve the goal of removing traditional long tubing system, the ink reservoir width of system must be greater than the print width of printer. As a result, a stable back pressure of print head can be kept all the time no matter the print is printing or not; it could also be more stable than before even if print head is moving in high speed. Hence, better print quality could be obtained in the printer equipped with the new system of paper.