Production method for producing optical fiber ribbon

A production method for producing an optical fiber ribbon, using a production apparatus containing one or more light irradiation apparatus, a temperature adjustment device, and an ink application apparatus installed in this order along a conveyance direction of single-core coated optical fibers, wherein the method comprises:

• curing a photocurable resin by irradiating the photocurable resin with light from the light irradiation apparatuses, the photocurable resin being disposed to couple together a plurality of single-core coated optical fibers arranged in parallel;
• adjusting a temperature of the cured photocurable resin by the temperature adjustment device while measuring the temperature;
• and
• forming a plurality of identification marks on the cured photocurable resin, the forming being performed by applying ink by an ink-jet method using the ink application apparatus;
• wherein
• the forming the plurality of identification marks is performed in a state in which the temperature of the cured photocurable resin is lower than or equal to 37.3° C.