Patent ID: 7758179

Claim:
An inkjet recording apparatus, comprising: a recording head to eject light-hardenable ink onto a recording medium; a plurality of light sources configured with semiconductor light emitting elements to radiate light onto the light-hardenable ink emitted from the recording head, wherein the plurality of the light sources forms one block or a plurality of blocks; a constant voltage power supply to receive an alternate current and convert into a direct current power having a predetermined voltage; a plurality of constant current circuits to convert the direct current power supplied from the constant voltage power supply into a direct current power having a predetermined current value and to supply the direct current power to the light sources; a control section to control the current value of the direct current power supplied form the constant current circuit; and a plurality of short circuits to lower a voltage applied to some of the plurality of the light sources in each of the blocks below that which is necessary to emit light, wherein the plurality of the light sources are connected serially in each of the plurality of the blocks, each of the plurality of the constant current circuits is connected to a respective one of the plurality of the blocks and each of the plurality of the blocks has a respective one of the plurality of the short circuits.