An image forming apparatus which is capable of reducing a load on a data bus therein when controlling an image reading apparatus depending on its image processing capability. When acquired identification information about the image forming apparatus is included in a clock control table 600, a clock frequency for controlling hardware of the image reading apparatus in accordance with the clock control table 600, while setting the clock frequency therefor to a default setting of the clock control table 600 when the acquired identification information is not included in the clock control table 600, wherein a minimum value of clock frequencies in the clock control table 600 is set as the default setting of the clock control table 600.

A method of correcting print banding in a printer, including initiating the banding correction process, generating prints with various levels of banding based on different levels of voltages applied to the array of jets, receiving an input from the user selecting the preferred print, and adjusting voltage levels applied to jets corresponding to the preferred print.

An image forming apparatus includes: a conveying path on which a recording medium is conveyed; an image capturer that includes a light source and radiates light from the light source to capture the recording medium being conveyed at different timings to generate at least two images including a first image and a second image; and a movement amount calculator that calculates a movement amount of the recording medium between capturing timings of the first and second images, wherein the movement amount calculator: calculates an index distance which is a distance in a conveying direction of a pattern formed by reflected light from the recording medium; calculates a ratio between the index distance and a reference distance used for comparison with the index distance; and calculates a movement amount of the recording medium between the capturing timings of the first and second images.

In accordance with an embodiment, an image forming apparatus comprises a main scanning counter, a controller, and an interval determination section. The main scanning counter counts a first count value indicating the number of times a synchronization signal for synchronization between the apparatuses is input to itself, and registers the first count value to an initial value if a main scanning reference signal indicating a progress state of exposure in a main scanning direction is input to itself. The controller generates PreHSYNC generated at the same interval as the main scanning reference signal. The interval determination section determines that an abnormality occurs in the main scanning reference signal if the first count value satisfies a predetermined condition at a timing at which the PreHSYNC is input to itself.

Plural write control units independently control plural print mechanisms corresponding to plural toner colors. A controller stores a setting value for each page into a first memory area. Plural second memory areas respectively correspond to the plural write control units. Further, one write control unit among them transfers the setting value from the first memory area to the second memory area of this write control unit, and applies the setting value stored in the second memory area and causes the corresponding print mechanism to print a page image. Another write control unit among them transfers the setting value to the second memory area of this write control unit from the second memory area of another write control unit among them, and applies the setting value stored in the second memory area and causes the corresponding print mechanism to print a page image.

An image forming apparatus includes: a specification unit configured to perform surface specification processing for specifying a reflective surface that deflects light; a correction unit configured to perform correction processing for correcting image data in accordance with which reflective surface deflects light; and a control unit configured to control so as to cause scanning of a first photosensitive member to start before the surface specification processing completes, and control so as to, after the surface specification processing completes, cause the correction processing to be performed, with respect to image data for causing light to be emitted from a second light source and in accordance with a specification result of the surface specification processing, and cause scanning of the second photosensitive member to start.

A recording apparatus includes a head including a wire and performing recording on a medium by allowing the wire to strike the medium, a temperature detection unit that detects a temperature of the head, a driving circuit for driving the wire, and a control unit that controls an energization state of the driving circuit. The control unit switches the energization state of the driving circuit between an ON state and an OFF state at each time determined by the control unit, based on the temperature detected by the temperature detection unit such that a current flowing in the driving circuit is kept constant, when the head performs recording on the medium.

An image forming apparatus, including: a light source; a photosensitive member rotatable in a first direction; a deflecting unit configured to deflect the light beam in a second direction orthogonal to the first direction; a conversion unit configured to convert image data into a plurality of bit data corresponding to a density on a pixel-by-pixel basis; a specifying unit configured to specify a pixel size that is a number of divided pixels forming a pixel according to a position of the pixel in the second direction; and a correction unit configured to correct the plurality of bit data according to the pixel size, wherein the specifying unit specifies pixel sizes of pixels after an arrangement of the pixels in the second direction is replaced for each pixel group, the pixel group being obtained by dividing, with respect to each predetermined number of pixels, pixels arranged in the second direction.

An image forming apparatus, including: a light source; a photosensitive member rotatable in a first direction; a deflecting unit configured to deflect the light beam in a second direction orthogonal to the first direction; a conversion unit configured to convert image data into a plurality of bit data corresponding to a density on a pixel-by-pixel basis; a specifying unit configured to specify a pixel size that is a number of divided pixels forming a pixel according to a position of the pixel in the second direction; and a correction unit configured to correct the plurality of bit data according to the pixel size, wherein the specifying unit specifies pixel sizes of pixels after an arrangement of the pixels in the second direction is replaced for each pixel group, the pixel group being obtained by dividing, with respect to each predetermined number of pixels, pixels arranged in the second direction.

An image forming apparatus includes: a unit configured to form an electrostatic latent image using a plurality of scan lines on a photosensitive body by, on a basis of an image signal, performing scanning of the photosensitive body in a main scan direction using one or more scanning beams repeatedly in a sub-scan direction orthogonal to the main scan direction; and a unit configured to store start position information indicating start positions in the main scan direction of the plurality of scan lines. In a case where scan positions in the sub-scan direction of the plurality of scan lines are linearly shifted relative to a target position with a period of N number of scan lines, the start position information indicates to linearly shift the start positions of N scan lines in the main scan direction along the sub-scan direction.