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US 9,429,827 B2Granted
Image projection apparatus, control method, and computer-readable storage medium
AssigneeRicoh Company, Ltd.
InventorYoshio Kubo
Life of this patent
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AssigneeRicoh Company, Ltd.
InventorYoshio Kubo
Estimating the term…
An image projection apparatus includes a light source in which a light emitting material emits light through an electric discharge between electrodes; an image forming unit that modulates an intensity of the light emitted from the light source to form an image; a cooling fan that cools the light source; an input unit that receives an input of an instruction signal for turning off a power source of the image projection apparatus; a voltage detector that detects a voltage value of the light source in lighting; a voltage value determining unit that determines whether the voltage value detected by the voltage detector is less than a preset threshold value when the input unit receives the instruction signal; and a cooling fan controller that performs an after-cooling operation of driving the cooling fan to cool the light source when the voltage value is less than the threshold value.
An image projection apparatus comprising:
A control method to be performed in an image projection apparatus including a light source in which a light emitting material emits light through an electric discharge between electrodes;
A non-transitory computer-readable storage medium with an executable program stored thereon and executed by a computer of an image projection apparatus including a light source in which a light emitting material emits light through an electric discharge between electrodes, an image forming unit to modulate an intensity of the light emitted from the light source to form an image, and a cooling fan to cool the light source, wherein the program instructs the computer of the image projection apparatus, when executed, to perform:
Dependencies are inferred from the claim text.