The folding fan was invented in Kyoto. This is one of the few craft origin claims that is historically uncontested. While flat, rigid fans (uchiwa) existed in China and Egypt for millennia, the hinged, folding fan -- sensu -- first appeared in Japan during the late Heian period, around the 8th to 9th century. The earliest surviving examples are wooden slat fans (hiogi) recovered from temple repositories, dated to approximately 877 CE. From Kyoto, the folding fan spread to China in the Song dynasty, reached Europe via Portuguese traders in the 16th century, and became a global object. But production never left Kyoto entirely: the city still manufactures approximately 90 percent of Japan's handmade folding fans.
From Court Protocol to Universal Object
The earliest Kyoto fans were not cooling devices. They were instruments of court etiquette. Heian-period court culture, governed by elaborate codes of behavior documented in texts like the "Engishiki" (927 CE), assigned specific fan types to specific ranks. The hiogi -- a fan made of thin cypress wood slats bound with silk cord -- was restricted to the aristocracy. The number of slats indicated rank: 25 slats for the highest nobles, fewer for lower ranks. Commoners were prohibited from carrying hiogi entirely.
Paper folding fans (kami-sensu) emerged in the 10th century, when artisans began stretching washi paper over a bamboo frame rather than binding wooden slats. This innovation reduced weight, lowered cost, and -- crucially -- created a flat surface suitable for writing and painting. Court officials began using fans to carry notes, poems, and informal communications. A fan could be passed discreetly during ceremonies where speaking was prohibited.
By the Kamakura period (1185-1333), fans had acquired military significance. Commanders used them to signal troop movements on the battlefield. The war fan (gunsen) was constructed with iron ribs and served as both a signaling device and a last-resort weapon. The famous image of Nasu no Yoichi shooting a fan target from horseback at the Battle of Yashima (1185) illustrates how thoroughly the fan had penetrated Japanese martial culture within three centuries of its invention.
The Structure of a Kyo-Sensu
A traditional Kyo-sensu consists of three fundamental components: the frame (hone), the paper or silk covering (jigami), and the rivet (kaname) that holds the assembly together. Each component involves specialized production.
The frame is made from madake bamboo (Phyllostachys bambusoides), harvested in autumn when moisture content is lowest. The bamboo is split, boiled, sun-dried for two to three months, then split again into individual ribs. A standard fan requires 15 to 45 ribs, depending on size and intended use. Each rib is shaved to a thickness of approximately 0.5 to 1.0 millimeters using a specialized knife called a kosuki. The ribs must be uniform in thickness and flexibility; a single inconsistent rib will cause the fan to fold unevenly.
The covering is traditionally made from washi -- handmade Japanese paper produced from kozo (paper mulberry) fibers. For Kyo-sensu, the paper is made in a double layer: two sheets are pasted together with the grain running in perpendicular directions, creating a composite that is stronger and more tear-resistant than either sheet alone. This double-layer paper is cut into a precise trapezoidal shape, then pleated by hand using a wooden mold (kata) that determines the fold pattern.
The assembly process -- inserting ribs between the two paper layers, aligning each rib with a fold crease -- is the most technically demanding step. It is performed entirely by hand, using a thin bamboo tool to separate the paper layers and guide each rib into position. An experienced assembler (tsukeshi) can complete approximately 20 fans per day. The assembled fan is then pressed, trimmed, and fitted with its rivet.
From raw bamboo to finished fan, the production process involves approximately 87 distinct steps, traditionally performed by separate specialists. This extreme division of labor has been documented since at least the Edo period.
The Fan as Canvas
The artistic dimension of Kyo-sensu developed in parallel with its functional uses. Because the fan surface presents a uniquely challenging format -- a radial shape that changes geometry as it opens and closes -- it attracted painters and calligraphers seeking to demonstrate virtuosity.
During the Muromachi period (1336-1573), fan painting became a recognized art form. The painter Sotatsu (active early 17th century), co-founder of the Rimpa school, produced fan paintings that are now designated National Treasures. His technique of "tarashikomi" -- dripping wet pigment onto still-wet ink -- created effects that exploited the fan's curved surface in ways impossible on a flat scroll.
Fan painting conventions developed specific compositional rules. Because a fan is read both open and closed, skilled artists designed images that worked in both states -- a landscape that revealed different elements at different angles of opening. The asymmetry of the fan shape encouraged compositional techniques that later influenced Japanese painting more broadly: the diagonal composition, the strategic use of empty space, and the placement of focal points away from center.
By the Edo period, Kyoto supported a distinct guild of fan painters (sensu-eshi) whose work was collected independently of the fans themselves. Some customers purchased decorated fans specifically to disassemble them and mount the paintings as hanging scrolls. This practice acknowledged that the art had transcended its functional substrate.
Kyo-Sensu in Performance and Ceremony
The fan's role in Japanese performing arts is structural, not ornamental. In Noh theater, codified in the 14th century, the fan serves as a universal prop: it represents a sword, a sake cup, a letter, a pillow, or dozens of other objects depending on how it is held and moved. Noh utilizes approximately 15 standardized fan-handling gestures (ogi-no-kata), each with a specific meaning. A fan held vertically and rotated clockwise represents the rising moon. The same fan thrust forward represents the drawing of a sword.
In Japanese classical dance (nihon-buyo), the fan is even more central. Dancers train for years to master "ogi-sabaki" -- fan manipulation -- which involves opening, closing, spinning, and tossing the fan in precisely timed movements. A performance-grade Kyo-sensu for dance weighs between 30 and 40 grams and must open and close with uniform resistance. Dancers typically retire a practice fan after two to three months of daily use, as repeated handling alters the bamboo's flexibility.
Tea ceremony employs the fan in a purely symbolic capacity. The guest places a closed fan on the tatami mat in front of their knees as a gesture of respect, creating a symbolic boundary between themselves and the host. The fan is never opened during the ceremony. Its function is entirely social: a physical token of humility and deference.
Production Today
The Kyoto Fan Cooperative Association reported 82 member workshops in 2023, down from over 200 in 1970. Annual production has declined from approximately 15 million fans in the 1960s to roughly 4 million today. The decline reflects both reduced domestic demand -- younger Japanese are less likely to carry fans -- and competition from machine-made imports.
However, the surviving workshops maintain production methods essentially unchanged from the Edo period. Machine-made fans use injection-molded plastic ribs and single-layer printed paper; handmade Kyo-sensu uses split bamboo and layered washi. The difference is immediately apparent in use: a handmade fan produces a softer, more diffused breeze because the washi surface is slightly porous, while a plastic-and-paper fan pushes a concentrated column of air.
Several Kyo-sensu workshops have found new markets by collaborating with contemporary artists and designers, producing limited-edition fans that function as both practical objects and collectible art. These collaborations draw on the tradition's oldest strength: the fan as a surface where craft and art converge.
WATASU will carry Kyo-sensu made by traditional methods -- bamboo-ribbed, washi-covered, assembled by hand -- bringing Kyoto's original folding art to a global audience.
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