To provide a liquid jetting apparatus which reduces leakage of light.
The liquid jetting apparatus includes a head which jets towards a medium a liquid cured when irradiated with light, and an irradiating part which irradiates the light. The irradiating part has a light source of the light, and a plurality of reflecting surfaces prepared between the light source and the medium. The plurality of reflecting surfaces have a plurality of sets of every two reflecting surfaces opposed to each other. The surfaces opposed to each other are arranged in parallel to a direction perpendicular to the medium.
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