Abstract: According to one embodiment, a motor control apparatus includes a timer to measure a period in which a job is not executed, a sensor to detect a temperature of a physical object, an acquisition part to acquire time information measured by the timer and temperature information detected by the sensor, and a drive control part that determines a current value of a motor provided in the physical object based on the time information and the temperature information acquired by the acquisition part, and controls the motor current value by applying a voltage level corresponding to the determined current value to a drive element of the motor.

Abstract: An image reader includes a path switching part, located at a branch point that switches between a double-sided path and a single-sided path. The double-sided path defines a conveyance route that passes through a reading position from the branch point to enter a conveyance path that causes a document to make a U-turn, and then again passes through the reading position to be discharged to a paper discharge tray. The single-sided path defines a conveyance route that, without passing through the reading position, merges into the conveyance path from the branch point. Along the double-sided path, document detecting sensors provide detection results so that a collision determination part determines a possibility of a collision between documents, and if such a possibility is determined, the path switching part switches the double-sided path to the single-sided path to prevent the documents from colliding head-on with each other in the vicinity of the reading position.

Abstract: When the time period is night, processing advances to step S13 to set the initialization speed of a line feed motor to the first speed (v1), and to step S15 to execute initialization operation of the line feed motor at the first speed (v1). When the time period is morning or daytime, the processing advances to step S12 to detect a cover open/closed state. When the cover is open, the processing advances to step S13 to set the initialization speed of the line feed motor to the first speed (v1). When the cover is closed, the processing advances to step S14 to set the initialization speed of the line feed motor to the second speed (v2) which is higher than the first speed (v1). The processing advances to step S15 to execute initialization operation of the line feed motor at the second speed (v2).

Abstract: Adjustment object color space containing movement source partial color space including a color of an object of conversion processing and movement destination partial color space including a color in which the conversion processing is performed so as to inscribe the spaces is handled as a conversion object region. The inside of the conversion object region is moved toward a target color so that coordinates of an adjustment object overlaps with coordinates of a point after movement and the boundary of a movement region moves little or does not move at all. As a result of this, a phenomenon such as a color jump or gradation inversion occurs little in the boundary portion to the outside of an adjustment object region. Therefore, maintenance of gradation continuity of an image of a color adjustment object and prevention of color inversion can be combined to make partial color adjustment.

Abstract: A drive unit including a drive shaft, a drive pulley attached to the drive shaft, and a drive wire driven by the drive pulley so as to move a movable body. The drive pulley is formed by press working or rolling.

Abstract: An image reading apparatus has a reading mode to read an image on a still document, and a reading mode to read an image on a moving document, and includes a first reading device to read one surface of the still document at a first reading station and a document moving at a second reading station, and a second reading device for reading the other surface of the document moving at a third reading station. The first, second and third reading stations are arranged adjacent to each other along the document transfer direction. A compact and light weight system capable of stable transport of the document and of quality image reading is thereby attained.

Abstract: An image is vector-quantized into coded data, which is stored in a storage device. The coded data is read out of the storage device and is decoded. The decoded data may cause an overflow due to a vector quantization error. If every piece of coded data is checked for an overflow when it is decoding, a large number of processes must be carried which extends the decoding time. To solve this problem, each piece of coded data is once decoded in the vector quantization stage, to determine whether or not the coded data causes an overflow. If it is determined that it causes an overflow, the coded data is provided with exception judging information indicating that an exceptional overflow process must be carried out when decoding the coded data. As a result, the exceptional overflow process is carried out only when required in a decoding stage, to shorten a decoding time.