An image forming apparatus of the present invention includes: a determination unit that determines toner application amounts based on image data; a memory device that stores a set of instructions; and at least one processor that executes the set of instructions to: control fixing temperature for fixing a toner image formed from the image data to a printing medium in accordance with information created for each printing page by analyzing the determined toner application amounts; and fix the toner image to a printing medium at the controlled fixing temperature. The determination unit divides each printing page of the image data into a plurality of meshes of a predetermined size and determines positions corresponding to the meshes obtained by the dividing, and counts the toner application amounts of pixels in each of the meshes based on a determination result of the determining of the positions and the image data.

An image forming apparatus includes an image bearing member, a transfer member, an acquiring portion, an applying portion, and a controller. When a transfer voltage is subjected to constant-voltage control so that the transfer voltage applied to the transfer member by the applying portion is substantially constant, in a case that the transfer voltage, when a toner amount used for a toner image is a first toner amount, is a first voltage, the controller controls the applying portion so that the transfer voltage is a second voltage lower in absolute value than the first voltage in a case that the toner amount is a second toner amount greater than the first toner amount. The acquiring portion acquires toner amount information on the toner amount for each toner image transferred onto a single recording material.

According to an embodiment, an image forming apparatus includes an image forming device, a scanning device, and a controller. The image forming device forms a first test image and forms a second test image. The scanning device scans the first test image with a first amount of emitted light corresponding to a first input value and scans the second test image with a second amount of emitted light corresponding to a second input value. The controller selectively executes any one of a first correction process, a second correction process, or a third correction process on the basis of an event change.

An image forming apparatus includes: an image former having parts provided in a replaceable manner to be used for image formation; a sensing part that detects a characteristic value of the parts; and a controller that determines whether the characteristic value of the parts, which fluctuates immediately after manufacture, is in a stable state based on a comparison between information regarding the characteristic value of the parts based on a detection result of the sensing part and a threshold value and sets a process condition for the image former based on the detected characteristic value when determining that the characteristic value of the parts is not in the stable state.

An image forming apparatus capable of controlling density of an output image with high accuracy regardless of variation of internal temperature. A controller controls an image forming unit to form a measurement image, controls a light receiving unit to receive reflected light from the measurement image, controls a conversion unit to convert an output value of the light receiving unit, and controls an image formation condition based on a value that is obtained by converting the output value. An adjustment unit controls the light receiving unit to receive reflected light from an image bearing member, and adjusts the emission light amount of an emission unit based on the reflected light from the image bearing member. A selection unit selects a conversion condition from among conversion conditions based on a reference temperature that is detected when the adjustment unit adjusts the emission light amount and a current temperature.

An image forming apparatus includes a developing section, an image carrier, a deviation correction section, a specific pixel detection section and a determination section. The developing section forms a visible image on a photoconductor for each type of developer. The image carrier carries the visible images formed in a plurality of the developing sections. The deviation correction section corrects position deviation of the plurality of visible images formed on the image carrier. The specific pixel detection section detects the specific pixel used to form an image with a plurality types of developers. The determination section determines execution of correction in the deviation correction section according to information indicating an amount of the specific pixels.

A control unit of the invention compares printing setting suitable for a determined type of a recording material and printing setting of the recording material input by a user, and in a case where a difference between the printing setting suitable for the determined type of the recording material and the printing setting of the recording material input by the user falls in a predetermined range, the control unit performs a printing operation in accordance with the printing setting of the recording material input by the user, and in a case where the difference is greater than the predetermined range, the control unit performs the printing operation by changing the printing setting of the recording material input by the user, which is used when the difference is smaller than the predetermined range.

An image forming apparatus includes a photosensitive drum for bearing a developer, a charging roller that comes into contact with the photosensitive drum at a different velocity and that charges the photosensitive drum, a transfer roller that transfers a developer image on the photosensitive drum to a recording material, and a developing sleeve that supplies a developer to the photosensitive drum and that recovers a developer on the photosensitive drum after transfer. A detecting device detects information relating to injection charging, and a controller controls an amount of the fogging developer during image formation according to information detected by the detecting device while suppressing the amount of the developer recovered in the developing sleeve.

An image forming apparatus includes: an image forming unit comprising: a photosensitive member configured to rotate; a charging unit configured to charge the photosensitive member based on a charging bias; an exposure unit configured to expose the photosensitive member charged by the charging unit with laser light to form an electrostatic latent image on the photosensitive member; and a developing device configured to develop the electrostatic latent image based on a development bias to form an image on the photosensitive member, a reading unit configured to read a test image formed by the image forming unit, and a controller configured to: control the image forming unit to form the test image; control the reading unit to read the test image.

An image-forming apparatus employing an electrophotographic method that scans a surface of an image carrier with multi-beams emitted from a plurality of light emitting elements based on image data includes a density smoothing processor that performs a density smoothing process to smooth a density level difference of an image subjected to electronic bow correction, a density correction processor that performs density correction on the image subjected to the bow correction by light amount correction of a surface-crossing exposure segment, and a light emitting element driver controller that controls light emission of a plurality of light emitting elements of a light beam emitter based on the image data subjected to the density smoothing process and a control signal subjected to the density correction.