IMAGE FORMING APPARATUS, SENSING METHOD, AND RECORDING MEDIUM
First Claim
1. An image forming apparatus comprising:
- a sensor configured to include a light-emitting part for emitting light to a moving body and a light-receiving part;
a light-incidence adjusting mechanism configured to be able to alternatively select from a first state where the light-incidence adjusting mechanism causes light which have been emitted from the sensor and then reflected by the moving body to enter the sensor and a second state where the light-incidence adjusting mechanism causes a reflected light of light emitted from the sensor not to enter the sensor; and
a processing unit configured to cause the sensor to emit light, and correct output of the sensor when the light-incidence adjusting mechanism is in the first state on the basis of output of the sensor when the light-incidence adjusting mechanism is in the second state.
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Accused Products
Abstract
An image forming apparatus comprises: a sensor that includes a light-emitting part for emitting light to a moving body and a light-receiving part; a light-incidence adjusting mechanism that is able to alternatively select from a first state where the light-incidence adjusting mechanism causes light which have been emitted from the sensor and then reflected by the moving body to enter the sensor and a second state where the light-incidence adjusting mechanism causes a reflected light of light emitted from the sensor not to enter the sensor; and a processing unit that causes the sensor to emit light, and corrects output of the sensor when the light-incidence adjusting mechanism is in the first state on the basis of output of the sensor when the light-incidence adjusting mechanism is in the second state.
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Citations
9 Claims
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1. An image forming apparatus comprising:
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a sensor configured to include a light-emitting part for emitting light to a moving body and a light-receiving part; a light-incidence adjusting mechanism configured to be able to alternatively select from a first state where the light-incidence adjusting mechanism causes light which have been emitted from the sensor and then reflected by the moving body to enter the sensor and a second state where the light-incidence adjusting mechanism causes a reflected light of light emitted from the sensor not to enter the sensor; and a processing unit configured to cause the sensor to emit light, and correct output of the sensor when the light-incidence adjusting mechanism is in the first state on the basis of output of the sensor when the light-incidence adjusting mechanism is in the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A sensing method using a sensor that includes a light-emitting part for emitting light to an object and a light-receiving part, a portion of the light emitted when the light-emitting part is turned on being scattered within the sensor and received by the light-receiving part, the sensing method comprising:
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causing light which have been emitted from the sensor and then reflected by the object to enter the sensor and finding output of the sensor as a first output value; causing the sensor to emit light and finding output of the sensor as a second output value, in a state where a reflected light of light emitted from the sensor does not enter the sensor; correcting the first output value on the basis of the second output value; and finding surface information of the object on the basis of the corrected first output value.
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9. A non-transitory computer-readable recording medium that contains a computer program used in an apparatus equipped with a sensor that includes a light-emitting part for emitting light to an object and a light-receiving part, a portion of the light emitted when the light-emitting part is turned on being scattered within the sensor and received by the light-receiving part, the program causing a computer for controlling the apparatus to execute:
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causing light which have been emitted from the sensor and then reflected by the object to enter the sensor and finding output of the sensor as a first output value; causing the sensor to emit light and finding output of the sensor as a second output value, in a state where a reflected light of light emitted from the sensor does not enter the sensor; correcting the first output value on the basis of the second output value; and finding surface information of the object on the basis of the corrected first output value.
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Specification