Image forming apparatus and control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorKyu Chul KYUNG
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Abstract
An image forming apparatus and a control method thereof, the control method including applying a minimum current to a light emitting element, and applying one or more higher currents, up to a maximum current, to the light emitting element, if a light receiving element fails to detect light emitted by the light emitting element.
Claims20
A control method of an image forming apparatus including a waste toner container, a light emitting element to emit light through the waste toner container, and a light receiving element to detect the light that has passed through the waste toner container, the control method comprising:
- applying a first current having a first value to the light emitting element;
- and
- applying a second current having a second value that is higher than the first value, to the light emitting element, if the light receiving element fails to receive the light emitted from the light emitting element at the first value.
A control method of an image forming apparatus comprising:
- applying a first current having a first value to a light emitting element, to emit light into a waste toner container;
- applying a second current having a second value that is higher than the first value, to the light emitting element, if a light receiving element fails to detect the light produced by the application of the first current;
- and
- applying only the second current to the light emitting element, until the waste toner container is replaced, if the light receiving element failed to detect the light produced by the application of the first current.
An image forming apparatus comprising:
- a light emitting element to emit light into a waste toner container;
- a light receiving element to detect light emitted from the light emitting unit, which passes through the waste toner container;
- and
- a controller to apply a first current having a first value, to the light emitting element and to apply a second current having a second value that is higher than the first value, to the light emitting element, if the light receiving element fails to detect light emitted from the light emitting element, in response to the application of the first current.
A control method of an image forming apparatus comprising:
- emitting a first amount of light from a light emitting element, into a waste toner container;
- and
- emitting a second amount of light that is greater than the first amount of light, from the light emitting element, if a light receiving element fails to detect the first amount of light.
Dependencies are inferred from the claim text.