Abstract: An image forming apparatus comprises: an image processor to convert image data based on a conversion condition; an image forming unit to form an image based on the converted image data using a replaceable member; a memory to store the image data and the converted image data; a sensor to perform measurement of a test image; and a controller. If the replacement of the replaceable member is detected while forming images, the controller controls the image forming unit to form the test image and generates the conversion condition based on a result of the measurement of the test image. If the replacement of the replaceable member is detected while forming the images, the controller further controls the image processor to convert the image data stored in the memory based on the generated conversion condition.

Abstract: An image forming apparatus, configured to operate in first and second modes of which color gamut is different from each other, includes an exposure unit configured to expose a photosensitive drum; a developing roller configured to form a toner image; a detection unit configured to detect density of the toner image transferred to an intermediate transfer member; and a controller configured to adjust the density based on a value of input image data. A dithering process for the controller's controlling of the exposure unit is different depending on whether the operation is in the first mode or the second mode, and in at least a part of the input image data, the density of the toner image formed by the dithering process in the first mode is higher than the density of the toner image formed by the dithering process in the second mode.

Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet; an image processing unit configured to perform processing, which comprises correction of color misregistration, on image data for controlling the image forming unit to form the image; and a controller configured to instruct the image forming unit to perform calibration in a case where a component of the image forming unit is replaced. The image forming unit includes a storage unit, and is configured to acquire correction information to be used for the correction of color misregistration in the calibration to store the correction information in the storage unit, and the image processing unit includes a memory configured to store first image data, which is the image data before being processed, and second image data, which is obtained by compressing the image data after being processed.

Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet; an image processing unit configured to perform processing, which comprises correction of color misregistration, on image data for controlling the image forming unit to form the image; and a controller configured to instruct the image forming unit to perform calibration in a case where a component of the image forming unit is replaced. The image forming unit includes a storage unit, and is configured to acquire correction information to be used for the correction of color misregistration in the calibration to store the correction information in the storage unit, and the image processing unit includes a memory configured to store first image data, which is the image data before being processed, and second image data, which is obtained by compressing the image data after being processed.

Abstract: An image forming apparatus comprises: an image processor to convert image data based on a conversion condition; an image forming unit to form an image based on the converted image data using a replaceable member; a memory to store the image data and the converted image data; a sensor to perform measurement on a test image; and a controller. If the replacement of the replaceable member is detected while forming images, the controller controls the image forming unit to form the test image and generates the conversion condition based on a result of the measurement on the test image. If the replacement of the replaceable member is detected while forming the images, the controller further controls the image processor to convert the image data stored in the memory based on the generated conversion condition.

Abstract: An image forming apparatus, configured to operate in first and second modes of which color gamut is different from each other, includes an exposure unit configured to expose a photosensitive drum; a developing roller configured to form a toner image; a detection unit configured to detect density of the toner image transferred to an intermediate transfer member; and a controller configured to adjust the density based on a value of input image data. A dithering process for the controller's controlling of the exposure unit is different depending on whether the operation is in the first mode or the second mode, and in at least a part of the input image data, the density of the toner image formed by the dithering process in the first mode is higher than the density of the toner image formed by the dithering process in the second mode.

Abstract: An image forming apparatus, configured to operate in first and second modes of which color gamut is different from each other, includes an exposure unit configured to expose a photosensitive drum; a developing roller configured to form a toner image; a detection unit configured to detect density of the toner image transferred to an intermediate transfer member; and a controller configured to adjust the density based on a value of input image data. A dithering process for the controller's controlling of the exposure unit is different depending on whether the operation is in the first mode or the second mode, and in at least a part of the input image data, the density of the toner image formed by the dithering process in the first mode is higher than the density of the toner image formed by the dithering process in the second mode.

Abstract: An image forming apparatus includes an image bearing member, a developing cartridge, a control portion configured to cause the image forming unit to form the toner image in one mode selected from a plurality of modes including a first image forming mode for forming a first toner image whose maximum loading amount is a first loading amount and a second image forming mode for forming a second toner image whose maximum loading amount is a second loading amount different from the first loading amount, a detection unit, and a display portion configured to display information related to the number of sheets of a recording material on which the first toner images can be formed in the first image forming mode and information related to the number of sheets of a recording material on which the second toner images can be formed in the second image forming mode.

Abstract: An image forming apparatus includes an image bearing member, a development cartridge configured to store developer and including a developer bearing member bearing and conveying the stored developer to a position where an electrostatic latent image formed on the image bearing member is developed, a detection unit configured to detect a developer amount within the development cartridge, and a display portion configured to display information indicating that the developer within the development cartridge is insufficient to form an image per size of a recording member, based on a remaining developer amount within the development cartridge detected by the detection unit.

Abstract: An image forming apparatus, configured to operate in first and second modes of which color gamut is different from each other, includes an exposure unit configured to expose a photosensitive drum; a developing roller configured to form a toner image; a detection unit configured to detect density of the toner image transferred to an intermediate transfer member; and a controller configured to adjust the density based on a value of input image data. A dithering process for the controller's controlling of the exposure unit is different depending on whether the operation is in the first mode or the second mode, and in at least a part of the input image data, the density of the toner image formed by the dithering process in the first mode is higher than the density of the toner image formed by the dithering process in the second mode.

Abstract: An image forming apparatus includes an image bearing member, a developing cartridge, a control portion configured to cause the image forming unit to form the toner image in one mode selected from a plurality of modes including a first image forming mode for forming a first toner image whose maximum loading amount is a first loading amount and a second image forming mode for forming a second toner image whose maximum loading amount is a second loading amount different from the first loading amount, a detection unit, and a display portion configured to display information related to the number of sheets of a recording material on which the first toner images can be formed in the first image forming mode and information related to the number of sheets of a recording material on which the second toner images can be formed in the second image forming mode.

Abstract: An image forming apparatus includes an image bearing member, a development cartridge configured to store developer and including a developer bearing member bearing and conveying the stored developer to a position where an electrostatic latent image formed on the image bearing member is developed, a detection unit configured to detect a developer amount within the development cartridge, and a display portion configured to display information indicating that the developer within the development cartridge is insufficient to form an image per size of a recording member, based on a remaining developer amount within the development cartridge detected by the detection unit.

Abstract: An image forming apparatus, configured to operate in first and second modes of which color gamut is different from each other, includes an exposure unit configured to expose a photosensitive drum; a developing roller configured to form a toner image; a detection unit configured to detect density of the toner image transferred to an intermediate transfer member; and a controller configured to adjust the density based on a value of input image data. A dithering process for the controller's controlling of the exposure unit is different depending on whether the operation is in the first mode or the second mode, and in at least a part of the input image data, the density of the toner image formed by the dithering process in the first mode is higher than the density of the toner image formed by the dithering process in the second mode.

Abstract: An image forming apparatus configured to operate in first and second modes of which color gamut is different from each other, the image forming apparatus includes: an exposure unit configured to expose a photosensitive drum; a developing roller configured to form a toner image; a detection unit configured to detect density of the toner image transferred to an intermediate transfer member; and a controller configured to adjust the density based on a value of input image data. A dithering process for controller's controlling of the exposure unit is different depending on whether the operation is in the first mode or the second mode, and in at least a part of the input image data, the density of the toner image formed by the dithering process in the first mode is higher than the density of the toner image formed by the dithering process in the second mode.

Abstract: An image forming apparatus including an image forming unit that forms an image, an intermediate transfer member for a measuring image, a measurement unit that measures the measuring image, a conversion unit that converts a measurement result of the measuring image on a basis of a conversion condition, a determination unit that determines an image forming condition on a basis of the converted measurement result, and an update unit that updates the conversion condition while forming and measuring first measuring images, converting the measurement results of the first measuring images, determining a measuring image forming condition on a basis of the converted measurement results, forming second measuring images on a basis of the measuring image forming condition, obtaining measuring results of the second measuring images output from another measuring unit, and updating the conversion condition on a basis of the measurement results of the second measuring images.

Abstract: An image forming apparatus includes an image bearing member, and a developing device including a developing container accommodating a one component developer including toner, and a developer detecting portion configured to detect the developer in the developing container. The developing device develops an electrostatic latent image formed on the image bearing member with the toner. In addition, a developer supply portion supplies the developer into the developing container in accordance with a detection result of the developer detecting portion, and a controller controls developer supply means, in which a developer amount in the developing container when an image ratio of images formed by a predetermined number of image formations is a first image ratio is larger than the developer amount in the developing container when the image ratio of the images formed by a predetermined image formations is a second image ratio which is smaller than the first image ratio.

Abstract: An image forming apparatus includes: a correction unit correcting image data based on a correction condition; an image forming unit forming an image based on the corrected image data; a transfer unit transferring the image onto a sheet; a measuring unit measuring a measuring image on an image bearing member; a converting unit converting a measurement result of the measuring image, based on a conversion condition; a first generating unit generating the correction condition based on the converted measurement result; an acquiring unit acquiring a measurement result of a test image formed on the image bearing member; a controller forming a test image on the sheet; a receiving unit receiving instruction from a user comparison of a sample image and the test image transferred on the sheet; and a second generating unit generating the conversion condition, based on the instruction and the acquired measurement result of the test image.

Abstract: An image forming apparatus including an image forming unit that forms an image, an intermediate transfer member for a measuring image, a measurement unit that measures the measuring image, a conversion unit that converts a measurement result of the measuring image on a basis of a conversion condition, a determination unit that determines an image forming condition on a basis of the converted measurement result, and an update unit that updates the conversion condition while forming and measuring first measuring images, converting the measurement results of the first measuring images, determining a measuring image forming condition on a basis of the converted measurement results, forming second measuring images on a basis of the measuring image forming condition, obtaining measuring results of the second measuring images output from another measuring unit, and updating the conversion condition on a basis of the measurement results of the second measuring images.

Abstract: The image forming apparatus including: a controller controlling the image forming unit to form a test image, controlling the measurement unit to measure the test image on the image bearing member, and controlling the transfer unit to transfer the test image to the sheet; a reception unit receiving a user instruction; a second generation unit generating the conversion condition based on the user instruction and the measurement result of the test image, wherein the sample image includes a first sample image, a second sample image, and a third sample image, a color difference between the first and second sample images is smaller than a threshold value, a color difference between the second and third sample images is larger than the threshold value, density of the first sample image is higher than density of the second sample image and density of the third sample image.

Abstract: An image forming apparatus includes an image bearing drum; a developing device including a developing container accommodating a one component developer including toner, and a developer detector for detecting the developer in said developing container; a developer supply portion for supplying the developer into said developing container in accordance with a detection result of said detector; and a controller for controlling said developer supply device, in which a developer amount in said developing container when an image ratio of images formed by a predetermined number of image formations is a first image ratio is larger than the developer amount in said developing container when the image ratio of the images formed by a predetermined image formations is a second image ratio which is smaller than the first image ratio.