Shiroku-ban 4

With dimensions of 264mm x 379mm (10.4 inches x 14.9 inches), Shiroku-ban 4 paper format provides a print area just shy of 0.1 square meters. Sometimes alternately called "4-6" from its fourth-generation descendance from the original "6-sun" traditional Japanese paper, Shiroku-ban 4 upholds an aspect ratio around 1.38 as part of the evolved Edo-era formats. Its sizable area suits printing needs like graphical administrative documents, text-heavy reports, and drafting schematics. As one of the most commonly used old-style technical formats still popular in contemporary Asian printing alongside standardized JIS sizes, Shiroku-ban 4 represents ongoing traditional influences in Northeast Asian industrial norms. Its longevity results from useful bridging of historical and practical modern applications, filling a dual retrospective and current role in regional paper supply chains and printing houses.