Patent ID: 8787811

Claim:
A lenticular lens sheet manufacturing apparatus for manufacturing a lenticular lens sheet comprising a transparent substrate and a lens layer formed on one side of the transparent substrate and having a concavo-convex shape, the apparatus comprising: a transparent toner layer forming section which forms a transparent toner layer of a transparent toner containing a binder resin on the one side of the transparent substrate, the transparent toner layer forming section comprising: an image bearing member; a latent image forming section which forms an electrostatic latent image on the image bearing member; a developing section which develops the electrostatic latent image formed on the image bearing member with the transparent toner and forms a transparent toner image on the image bearing member; a transfer section which transfers the transparent toner image formed on the image bearing member to the one side of the transparent substrate; and a fixing section which heats the transparent toner image transferred to the one side of the transparent substrate to fix the transparent toner image, thereby forming a transparent toner layer on the one side of the transparent substrate; and a lens forming section which pressurizes under heating the transparent toner layer formed on the one side of the transparent substrate to shape the transparent toner layer into a concavo-convex shape, thereby forming a lens layer having a concavo-convex shape on the one side of the transparent substrate, the lens forming section comprising: a lens forming roller which includes a heater and is rotationally driven around an axis line thereof; a thermistor which detects a surface temperature of the lens forming roller; and a lens forming pressure roller which is rotatable in a state of coming into pressure-contact with the lens forming roller, wherein, when the surface temperature of the lens forming roller is T ° C. and a peripheral velocity of the lens forming roller is V mm/sec, the lens forming section controls electric power to be supplied to the heater and the peripheral velocity of the lens forming roller such that T/V is within a range from 3.3 to 10.7.