Array type printhead and inkjet image forming apparatus including the same

Abstract

An array type printhead includes a first member including a plurality of inflow holes through which inks of different colors flow, a second member including a plurality of channels formed on a top surface thereof to receive the inks of different colors from the plurality of inflow holes of the first member, and a plurality of outflow holes through which the received inks flow, a third member including a plurality of path grooves formed on a top surface thereof through which the inks of different colors flow from the second member, and a plurality of supply holes formed in corresponding ones of the plurality of path grooves, each supply hole to supply one head chip nozzle line with ink of one color, and at least one head chip mounted on a bottom surface of the third member and comprising a plurality of nozzles arranged in a plurality of lines in a lengthwise direction of the printhead corresponding to a widthwise direction of a printing medium to eject the inks of different colors, the first, second, and third members being layered on top of each other.

Description

technical field [0001] The present invention relates to an inkjet imaging device, in particular to an array type inkjet head and an inkjet imaging device including the inkjet head. Background technique [0002] Recently, a wide-array type inkjet image forming apparatus that generates an image by ejecting ink onto printing paper using a plurality of nozzles formed on a printing head in the width direction of the printing paper has been actively researched. Such a wide-array inkjet image forming apparatus prints faster than a shuttle type inkjet image forming apparatus that forms an image using an ink cartridge that moves back and forth in the width direction of printing paper. [0003] FIG. 1 is a perspective view showing a conventional array type printhead 10 . Referring to FIG. 1 , a conventional array type printhead 10 includes a substrate 12 formed of ceramics, and a plurality of head chips 15 on which a plurality of nozzles 17 are formed. The head chip 15 is arranged o...

AI Technical Summary

Problems solved by technology

[0004] However, the conventional print head 10 requires at least three head chip rows to form a color image, so it is difficult to miniaturize the print head 10 and the inkjet image forming apparatus including the print head 10

In addition, the cost of the inkjet image forming apparatus including the print head 10 is also increased due to the large number of head chips 15 arranged in the at least three head chip rows

[0005] In addition, since the materials forming the substrate 12 and headers (ie, ceramics and aluminum) are expensive and difficult to process to obtain high dimensional accuracy, the manufacturing cost of the imaging device increases

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