Abstract: An image scanning apparatus includes a sheet loading unit, a pickup roller, a first conveying roller, a detecting unit, a first stepping motor, a second conveying roller, a second stepping motor, a scanning unit, and a control unit that starts driving of the second stepping motor after performing phase matching of the second stepping motor. The control unit starts driving of the first stepping motor without performing phase matching of the first stepping motor. When an instruction to start scanning is input, the control unit starts the phase matching of the second stepping motor. When the detecting unit detects the document, the control unit starts driving of the first stepping motor after completion of the phase matching of the second stepping motor. When the detecting unit detects no document, the control unit starts driving of the first stepping motor before completion of the phase matching of the second stepping motor.

Abstract: An image scanning apparatus includes a sheet loading unit, a pickup roller, a first conveying roller, a detecting unit, a first stepping motor, a second conveying roller, a second stepping motor, a scanning unit, and a control unit that starts driving of the second stepping motor after performing phase matching of the second stepping motor. The control unit starts driving of the first stepping motor without performing phase matching of the first stepping motor. When an instruction to start scanning is input, the control unit starts the phase matching of the second stepping motor. When the detecting unit detects the document, the control unit starts driving of the first stepping motor after completion of the phase matching of the second stepping motor. When the detecting unit detects no document, the control unit starts driving of the first stepping motor before completion of the phase matching of the second stepping motor.

Abstract: An image forming apparatus includes an original reading unit; an image forming unit, an image data sending unit; and a mode setting unit for setting one of original reading modes including a first original reading mode for the original reading unit to read originals of the same size, and a second original reading mode for the original reading unit to read originals of different sizes; and a control unit for controlling the original reading unit and the image forming unit so as to execute a copy job including the original reading process and the image forming process, and a sending job including the original reading process and the sending process. The mode setting unit is capable of independently setting, for the copy job and the sending job, a default value indicating the first original reading mode or the second original reading mode.

Abstract: An image forming apparatus includes an original reading unit; an image forming unit, an image data sending unit; and a mode setting unit for setting one of original reading modes including a first original reading mode for the original reading unit to read originals of the same size, and a second original reading mode for the original reading unit to read originals of different sizes; and a control unit for controlling the original reading unit and the image forming unit so as to execute a copy job including the original reading process and the image forming process, and a sending job including the original reading process and the sending process. The mode setting unit is capable of independently setting, for the copy job and the sending job, a default value indicating the first original reading mode or the second original reading mode.

Abstract: An image reading apparatus includes a line image sensor receiving a light reflected from an original illuminated by a light source to generate image data, an original size detector disposed away from an original positioning portion by a predetermined distance in a sub-scanning direction, an original image reading start instructing unit outputting an image reading start instruction for starting an image reading operation when being depressed by a user, and a controller determining a size of the original based on detection results of the line image sensor and the original size detector when the size of the original is not stored in a memory in a case in which the controller receives the image reading start instruction in a state in which it is detected that an angle of a pressure plate is greater than a predetermined angle.

Abstract: A motor control device include a detector that detects a drive current flowing through a winding of a motor, a first determiner that determines a rotation phase of a rotor of the motor, using preset control values, a controller that controls the drive current to reduce a deflection between the rotation phase determined by the first determiner and an instructed phase representing a target phase of the rotor, a first discriminator that determines whether rotation of the motor is abnormal, and a second discriminator that identifies a type of a motor attached to the motor control device. If the first discriminator determines that the rotation of the motor attached to the motor control device is abnormal, the controller sets a control value corresponding to the type of the motor identified by the second discriminator, as the control value that the first determiner uses when determining the rotation phase.

Abstract: An image forming apparatus temporarily stores, in an image memory, image data generated by a front surface reading unit and a back surface reading unit for reading images of a front surface and a back surface of an original respectively. A CPU of an image forming apparatus, at a time of starting a copy job, sets an output frequency of the image memory (transfer rate of image data) to a first frequency F1 that is lower than a second frequency F2. The CPU sets the output frequency of the image memory to the second frequency F2 when transfer of the image data of the first page which corresponds to the front surface of a first original completes.

Abstract: An image reading apparatus, including: a first distance detector configured to measure a first distance of the original conveyed after a sensor is changed from a first state detecting the original to a second state not detecting the original; a second distance detector configured to measure a second distance of the original conveyed after the second state is changed to the first state; and a controller configured to control a conveyor so that the conveyor starts a conveyance of a succeeding original when the second distance reaches a conveyance permission distance before the first distance reaches a hole detection distance and the conveyor stops the succeeding original when the second state is changed to the first state before the first distance reaches the hole detection distance, and thereafter starts the conveyance of the succeeding original when the first distance reaches the hole detection distance.

Abstract: Provided is an image reading apparatus for suppressing an image defect ascribable to shading correction using a white reference plate arranged at a position different from a reading position of an original. The image reading apparatus includes a reading unit configured to read an image from the original passing through the reading position, the white reference plate arranged such that a distance between the reading unit and the white reference plate is larger than the distance between the reading unit and the reading position, and a control system. The control system includes a memory for backup configured to store in advance correlation data representing a correlation between a reading result of the white reference plate obtained by the reading unit, and a reading result of a reference member having a uniform density and arranged at the reading position.

Abstract: Provided is an information processing apparatus including: a non-volatile memory; a volatile memory being configured to store first, second and third programs; and a processor configured to: in a first activation processing mode, transfer the first program from the non-volatile memory to the volatile memory; transfer the second program from the non-volatile memory to the volatile memory based on the stored first program; and parallelly perform, first processing based on the stored second program and transfer of the third program from the non-volatile memory to the volatile memory, and in a second activation processing mode, transfer the first program from the non-volatile memory to the volatile memory; transfer the third program from the non-volatile memory to the volatile memory based on the stored first program; and parallelly perform second processing based on the stored third program and transfer of the second program from the non-volatile memory to the volatile memory.

Abstract: An image reading apparatus includes a line image sensor receiving a light reflected from an original illuminated by a light source to generate image data, an original size detector disposed away from an original positioning portion by a predetermined distance in a sub-scanning direction, an original image reading start instructing unit outputting an image reading start instruction for starting an image reading operation when being depressed by a user, and a controller determining a size of the original based on detection results of the line image sensor and the original size detector when the size of the original is not stored in a memory in a case in which the controller receives the image reading start instruction in a state in which it is detected that an angle of a pressure plate is greater than a predetermined angle.

Abstract: An image forming apparatus includes an image reader configured to perform image reading of a first original and perform image reading of a second original after reading of the first original, a printer configured to print a read image read by the image reader on a sheet, and a controller configured to control operation of the image reader and the printer. As to the first original, the controller is configured, in a case where the printer performs double-sided printing to print on both sides of a sheet, to start to print a read image of the first original before the image reading of the first original is completed, and as to the second original, the controller is configured, in a case where the printer performs double-sided printing to print on both sides of a sheet, to start to print a read image of the second original after the image reading of the second original is completed.

Abstract: An image reading apparatus reads an original image of an original, which is conveyed along a conveyance path, using a scanner unit and a CCD sensor unit. A separation sensor, a lead sensor, and a sheet discharge sensor, which are provided to the conveyance path, detect occurrence of a jam. A restarting method for reading processing of the original after the occurrence of the jam includes a first restarting method of re-placing all of the originals, which have been fed, on an original tray and a second restarting method of re-placing only an unread original on the original tray, and is set by a user. In a case where the second restarting method is set, the restarting method is determined from any one of the first restarting method and the second restarting method based on a discharged length of the original having been discharged to a sheet discharge tray.

Abstract: An image forming apparatus temporarily stores, in an image memory, image data generated by a front surface reading unit and a back surface reading unit for reading images of a front surface and a back surface of an original respectively. A CPU of an image forming apparatus, at a time of starting a copy job, sets an output frequency of the image memory (transfer rate of image data) to a first frequency F1 that is lower than a second frequency F2. The CPU sets the output frequency of the image memory to the second frequency F2 when transfer of the image data of the first page which corresponds to the front surface of a first original completes.

Abstract: In an image forming apparatus, an image forming unit forms a first image of a first color and a second image of a second color. An obtaining unit obtains information related to relative positions of a first measurement image, which is formed on an image carrier, of the first color and a second measurement image, which is formed on an image carrier, of the second color. A generation unit generates correlation data based on first information corresponding to a first image forming speed and second information corresponding to a second image forming speed. A controller, in a case where the image forming unit forms an image at the second image forming speed, corrects relative positions of the first image and the second image based on the first information in advance and the correlation data.

Abstract: An image forming apparatus capable of performing color misregistration correction at image forming speeds while reducing downtime. Image forming units form images of different colors. The formed images are transferred to an intermediate transfer belt. A pattern sensor detects color misregistration amounts of color patterns formed on the intermediate transfer belt. A CPU causes the image forming units to form first color patterns at a first speed and the pattern sensor to detect first color misregistration amounts, and causes the former to form second color patterns at a second speed different from the first speed and the latter to detect second color misregistration amounts. The CPU determines third color misregistration amounts at a third speed based on the first and second color misregistration amounts. The third speed is different from the first and second speeds.

Abstract: An image reading apparatus reads an original image of an original, which is conveyed along a conveyance path, using a scanner unit and a CCD sensor unit. A separation sensor, a lead sensor, and a sheet discharge sensor, which are provided to the conveyance path, detect occurrence of a jam. A restarting method for reading processing of the original after the occurrence of the jam includes a first restarting method of re-placing all of the originals, which have been fed, on an original tray and a second restarting method of re-placing only an unread original on the original tray, and is set by a user. In a case where the second restarting method is set, the restarting method is determined from any one of the first restarting method and the second restarting method based on a discharged length of the original having been discharged to a sheet discharge tray.

Abstract: Provided is an information processing apparatus including: a non-volatile memory; a volatile memory being configured to store first, second and third programs; and a processor configured to: in a first activation processing mode, transfer the first program from the non-volatile memory to the volatile memory; transfer the second program from the non-volatile memory to the volatile memory based on the stored first program; and parallelly perform, first processing based on the stored second program and transfer of the third program from the non-volatile memory to the volatile memory, and in a second activation processing mode, transfer the first program from the non-volatile memory to the volatile memory; transfer the third program from the non-volatile memory to the volatile memory based on the stored first program; and parallelly perform second processing based on the stored third program and transfer of the second program from the non-volatile memory to the volatile memory.

Abstract: A control method of an image forming apparatus for eliminating waste of sheet when a jam of an original occurs at the time of reading while shortening FCOT (First Copy Output Time) is provided. In the image forming apparatus, when double-sided image reading of the original fed by an ADF and the like is performed, for a first original, before the image reading of the first original is completed, a read image of the first original is started to print (printer output). A second original is not discharged but it is temporarily stopped. Then, if the image reading of the second original is failed, after the second original is replaced and after the image reading is completed, the read image of the second original is started to print (printer output).

Abstract: Provided is an image reading apparatus for suppressing an image defect ascribable to shading correction using a white reference plate arranged at a position different from a reading position of an original. The image reading apparatus includes a reading unit configured to read an image from the original passing through the reading position, the white reference plate arranged such that a distance between the reading unit and the white reference plate is larger than the distance between the reading unit and the reading position, and a control system. The control system includes a memory for backup configured to store in advance correlation data representing a correlation between a reading result of the white reference plate obtained by the reading unit, and a reading result of a reference member having a uniform density and arranged at the reading position.