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Abstract
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The inkjet (IJ) printer business has now become the core business that supports Seiko Epson (Epson). However, the road to that point was not all smooth sailing. In particular, the bubble jet-type IJ printers launched by Hewlett-Packard（HP） and Canon in the mid-1980s posed a huge threat that could have destroyed Epson’s business foundation from the ground up. Consequently, Epson undertook a company-wide effort to improve the conventional piezo method IJ printer technology and created the revolutionary MACH head. In this case, we will describe in detail the history of Epson’s IJ printer business, from the birth of the MACH head to the lateral development of IJ technology for industrial use.
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