摘要:
an image forming apparatus sets the optimum transfer bias based on density of some sets of toner patches formed on an image bearing member or an intermediate transfer member. The toner patches are categorized into at least two groups according to their width in the main scanning direction.
摘要:
An image forming apparatus sets the optimum transfer bias based on density of some sets of toner patches formed on an image bearing member or an intermediate transfer member. The toner patches are categorized into at least two groups according to their length in the main scanning direction.
摘要:
An image forming apparatus having plural image carriers, respective chargers, exposure units, color toner developing units, a black toner developing unit, a transfer unit that transfers in the transfer section the color toner images and black toner image onto an intermediate transfer member by the application of a transfer bias from the power supply unit, and a controller that controls the transfer output, an an optical density sensor that detects the optical density of color toner patch images formed on the intermediate transfer member, and a controller transfers the color toner patch images onto the intermediate transfer member while changing the transfer output, detects the optical densities of color toner patch images transferred onto the intermediate transfer member using the optical density sensor, and controls the transfer output to transfer the black toner image based on the detected optical densities of the color toner patch images.
摘要:
An image forming apparatus, comprises an image carrier for carrying a toner image, a charging device for charging the carrier, wherein the charging device includes a discharge member and a grid which is arranged between this discharge member and the image carrier and has at least a surface made of gold; and a discharge product removing device for removing discharge products generated by the charging device from a portion of the image carrier to where the charging device is located to face.
摘要:
An image forming apparatus, comprising an image carrier to carry toner image formed based on image data, a cleaning blade to remove residual toner on the image carrier by being in contact with the image carrier and a toner storage portion structured to store the residual toner removed by the cleaning blade and so that the image carrier can rub on the residual toner, wherein the toner storage portion is located on an upstream side of a contacting point between the cleaning blade and the image carrier in a moving direction of the image carrier and in a position where the toner storage portion is not in contact with the cleaning blade.
摘要:
Disclosed is an image forming apparatus, comprising: an image carrier; a brush to remove toner remaining on the image carrier by scrubbing a surface of the image carrier; a flicker to remove the toner adhering to the brush by contacting to the brush; a brush driving section to rotate the brush; and a control section to obtain a quantity of the toner adhering to the brush and to control the brush driving section so as to change a rotation speed of the brush based on the obtained quantity of the toner.
摘要:
An image forming apparatus, comprising an image carrier to carry toner image formed based on image data, a cleaning blade to remove residual toner on the image carrier by being in contact with the image carrier and a toner storage portion structured to store the residual toner removed by the cleaning blade and so that the image carrier can rub on the residual toner, wherein the toner storage portion is located on an upstream side of a contacting point between the cleaning blade and the image carrier in a moving direction of the image carrier and in a position where the, toner storage portion is not in contact with the cleaning blade.
摘要:
An image forming apparatus includes: an image carrier; a charging unit which charges a surface of the image carrier; a brush which removes toner remaining on the image carrier by rubbing the surface of the image carrier; a cleaning blade provided downstream of the brush in a rotational direction of the image carrier, which removes the toner remaining on the image carrier; a surface potential measuring sensor which measures a surface potential of the image carrier between the brush and the cleaning blade; and a controller which causes the surface potential measuring sensor to conduct a measuring operation and adjusts the surface potential of the image carrier between the brush and the cleaning blade on the basis of a measurement result.
摘要:
An image forming apparatus having plural image carriers, respective chargers, exposure units, color toner developing units, a black toner developing unit, a transfer unit that transfers in the transfer section the color toner images and black toner image onto an intermediate transfer member by the application of a transfer bias from the power supply unit, and a controller that controls the transfer output, an an optical density sensor that detects the optical density of color toner patch images formed on the intermediate transfer member, and a controller transfers the color toner patch images onto the intermediate transfer member while changing the transfer output, detects the optical densities of color toner patch images transferred onto the intermediate transfer member using the optical density sensor, and controls the transfer output to transfer the black toner image based on the detected optical densities of the color toner patch images.
摘要:
An image forming apparatus, comprises an image carrier for carrying a toner image, a charging device for charging the carrier, wherein the charging device includes a discharge member and a grid which is arranged between this discharge member and the image carrier and has at least a surface made of gold; and a discharge product removing device for removing discharge products generated by the charging device from a portion of the image carrier to where the charging device is located to face.