Abstract: An image forming apparatus includes a developing current detecting portion, a control portion, and a deviation detecting portion. The developing current detecting portion detects a developing current that flows between a developing device and a photoconductor drum during development of an electrostatic latent image. The control portion causes the exposure device to form electrostatic latent images of at least two patch images at different positions from each other and at different timings from each other in a main scanning direction. The deviation detecting portion detects deviation of one of the exposure device and the photoconductor drum with respect to the other based on a detection timing at which the developing current is detected during development of the electrostatic latent images of the at least two patch images.

Abstract: An image forming apparatus includes a transfer processing portion, a detection processing portion, a correction processing portion, and an adjustment processing portion. The transfer processing portion transfers a detection toner image to outside an output area of a transfer object to which a toner image as an output target is transferred from an image-carrying member. The detection processing portion detects a density of the detection toner image that has been transferred to the transfer object by the transfer processing portion. The correction processing portion corrects a detection result of the detection processing portion based on an amount of toner transferred from the image-carrying member to the output area at a transfer timing when the detection toner image is transferred. The adjustment processing portion adjusts an image forming condition based on the detection result after correction by the correction processing portion.

Abstract: A processor causes a printing portion to execute, when first conveying processing is executed, test print processing for executing processing of forming a plurality of test toner images on a sheet under a print condition that differs for each of the plurality of test toner images. The processor acquires a plurality of first sensing densities when the first conveying processing is executed. The processor causes the printing portion to execute the test print processing when second conveying processing is executed. The processor acquires a plurality of second sensing densities when the second conveying processing is executed. The processor compares the plurality of first sensing densities and the plurality of second sensing densities to adjust the print condition in the print processing when the second conveying processing is executed.

Abstract: An image forming apparatus includes a transfer processing portion, a detection processing portion, a correction processing portion, and an adjustment processing portion. The transfer processing portion transfers a detection toner image to outside an output area of a transfer object to which a toner image as an output target is transferred from an image-carrying member. The detection processing portion detects a density of the detection toner image that has been transferred to the transfer object by the transfer processing portion. The correction processing portion corrects a detection result of the detection processing portion based on an amount of toner transferred from the image-carrying member to the output area at a transfer timing when the detection toner image is transferred. The adjustment processing portion adjusts an image forming condition based on the detection result after correction by the correction processing portion.

Abstract: An image forming apparatus includes a developing current detecting portion, a control portion, and a deviation detecting portion. The developing current detecting portion detects a developing current that flows between a developing device and a photoconductor drum during development of an electrostatic latent image. The control portion causes the exposure device to form electrostatic latent images of at least two patch images at different positions from each other and at different timings from each other in a main scanning direction. The deviation detecting portion detects deviation of one of the exposure device and the photoconductor drum with respect to the other based on a detection timing at which the developing current is detected during development of the electrostatic latent images of the at least two patch images.

Abstract: An image forming apparatus forms a coverage rate adjustment patch having a coverage rate corresponding to a difference between a coverage rate measured by a coverage rate measurement unit and a coverage rate of an adjustment image pattern together with an adjustment image pattern by using the exposure device and the developing device in the calibration.

Abstract: An image forming apparatus forms a coverage rate adjustment patch having a coverage rate corresponding to a difference between a coverage rate measured by a coverage rate measurement unit and a coverage rate of an adjustment image pattern together with an adjustment image pattern by using the exposure device and the developing device in the calibration.

Abstract: An image forming apparatus includes a display and a control device. The control device functions as: a detector detecting a trouble occurred in an own apparatus; and a controller. The controller performs, with respect to a trouble-displaying image including a two-dimensional code in which a storage location on a network is converted into an image, at least one of three outputs of displaying on the display, printing on a recording sheet, and transmitting to an external apparatus. The storage location is where information indicating a method for dealing with the trouble detected by the detector is stored. Based on a predetermined first degree using at least either difficulty in solving the trouble or seriousness of the trouble as an indicator, the controller changes a display color of the two-dimensional code corresponding to the trouble so as to be different as the first degree becomes higher.

Abstract: An image forming apparatus includes a display and a control device. The control device functions as: a detector detecting a trouble occurred in an own apparatus; and a controller. The controller performs, with respect to a trouble-displaying image including a two-dimensional code in which a storage location on a network is converted into an image, at least one of three outputs of displaying on the display, printing on a recording sheet, and transmitting to an external apparatus. The storage location is where information indicating a method for dealing with the trouble detected by the detector is stored. Based on a predetermined first degree using at least either difficulty in solving the trouble or seriousness of the trouble as an indicator, the controller changes a size of the two-dimensional code corresponding to the trouble so as to be larger as the first degree becomes higher, and then outputs the two-dimensional code.

Abstract: An image forming apparatus includes a display and a control device. The control device functions as: a detector detecting a trouble occurred in an own apparatus; and a controller. The controller performs, with respect to a trouble-displaying image including a two-dimensional code in which a storage location on a network is converted into an image, at least one of three outputs of displaying on the display, printing on a recording sheet, and transmitting to an external apparatus. The storage location is where information indicating a method for dealing with the trouble detected by the detector is stored. Based on a predetermined first degree using at least either difficulty in solving the trouble or seriousness of the trouble as an indicator, the controller changes a display color of the two-dimensional code corresponding to the trouble so as to be different as the first degree becomes higher.

Abstract: An image forming apparatus includes a display and a control device. The control device functions as: a detector detecting a trouble occurred in an own apparatus; and a controller. The controller performs, with respect to a trouble-displaying image including a two-dimensional code in which a storage location on a network is converted into an image, at least one of three outputs of displaying on the display, printing on a recording sheet, and transmitting to an external apparatus. The storage location is where information indicating a method for dealing with the trouble detected by the detector is stored. Based on a predetermined first degree using at least either difficulty in solving the trouble or seriousness of the trouble as an indicator, the controller changes a size of the two-dimensional code corresponding to the trouble so as to be larger as the first degree becomes higher, and then outputs the two-dimensional code.