IMAGE FORMING APPARATUS
First Claim
1. An image forming apparatus, comprising:
- a printer engine configured to form an image on a medium;
a supply unit configured to supply the medium to the printer engine through a feed path;
a light emitting element configured to emit light onto the medium at a predetermined position on the feed path;
a transmitted light receiving element configured to receive transmitted light of the light emitted by the light emitting element which is transmitted through the medium;
a reflected light receiving element configured to receive reflected light of the light emitted by the light emitting element which is reflected by the medium;
a detecting unit which executes a detection through the emission of light and the reception of transmitted light and reflected light;
a first determining unit which determines a characteristic of the medium based on detection signals output by the transmitted light receiving element and the reflected light receiving element as a result of the detection;
a control unit which executes a predetermined control in the image forming apparatus based on the characteristic determined by the first determining unit; and
a light guide member configured to guide the light emitted by the light emitting element when the medium is not present, to the reflected light receiving element.
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Accused Products
Abstract
An image forming apparatus has a printer engine which forms an image on a medium; a unit which supplies the medium to the engine through a path; an element which emits light onto the medium at a position on the path; a receiving element which receives transmitted light of the light emitted which is transmitted through the medium; another receiving element which receives reflected light of the light emitted which is reflected by the medium; a unit which executes a detection through the emission and reception; a unit which determines a characteristic of the medium based on detection signals output by the receiving elements as a result of the detection; and a control unit which executes a control in the apparatus based on the characteristic.
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Citations
11 Claims
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1. An image forming apparatus, comprising:
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a printer engine configured to form an image on a medium;
a supply unit configured to supply the medium to the printer engine through a feed path;
a light emitting element configured to emit light onto the medium at a predetermined position on the feed path;
a transmitted light receiving element configured to receive transmitted light of the light emitted by the light emitting element which is transmitted through the medium;
a reflected light receiving element configured to receive reflected light of the light emitted by the light emitting element which is reflected by the medium;
a detecting unit which executes a detection through the emission of light and the reception of transmitted light and reflected light;
a first determining unit which determines a characteristic of the medium based on detection signals output by the transmitted light receiving element and the reflected light receiving element as a result of the detection;
a control unit which executes a predetermined control in the image forming apparatus based on the characteristic determined by the first determining unit; and
a light guide member configured to guide the light emitted by the light emitting element when the medium is not present, to the reflected light receiving element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification