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| Canon Bubble Jet Technology | |
Want to increase your Bubble Jet IQ ? Come on over >> Long-Line Printing Heads The development of wider printing heads marked another breakthrough in improving printing speed, and led to industrial applications of Bubble Jet technology, such as printing on textiles and labels. Whereas standard Bubble Jet printing heads measured only 9 to 13 millimeters, Canon has successfully developed a printing head that is 100 millimeters wide. To produce longer heads, the nozzle and heaters had to be arranged in a highly reliable fashion. We incorporated 1,360 heaters across the 100 mm length with a multichip head system containing 11 heater boards, each with 128 heaters. These efforts resulted in an extremely precise heater array with a gap of only six microns between heaters, a pitch of plus/minus two microns and a vertical discrepancy of less than four microns. When we molded the ink channel on the top plate and the heater board to create the nozzle, however, there were problems. When we used plastic plates, the heat caused unwanted expansions that resulted in a misalignment of the heater and ink channels, thus preventing the formation of a nozzle. We solved this problem by inserting a metal molding rod into the plate. We theiT used an excimer laser to process the ink channels and, once a few minor problems were solved, we had successfully developed the longline printing head.  |
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Long-line printing head
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