Abstract:
A development device is operable in multiple different speed modes and includes a developer bearer to carry developer, a developer regulator to adjust an amount of developer carried on the developer bearer, and multiple developer conveyance members disposed facing the developer bearer to transport developer in a longitudinal direction to circulate developer inside the development device. The multiple developer conveyance members including a first developer conveyance member to supply developer to the developer bearer and a second developer conveyance member to transport developer collected from the developer bearer. The development device executes developer amount balance adjustment in which a driving velocity of at least the multiple developer conveyance members is increased from a driving velocity in a lower-speed mode for a predetermined period after image development in the lower speed mode is completed and before image development in a higher speed mode is started.
Abstract:
An image forming apparatus includes an image bearer rotating in a first direction while bearing a toner image thereon in a normal image forming operation; a toner image forming device to form the toner image on the image bearer; a transferring device to transfer the toner image to a recording medium eventually; a cleaning blade to block toner remaining on image bearer without being transferred; and a controller. The controller controls the image bearer to perform an inverse rotation operation in which the image bearer rotates in a second direction opposite to the first direction after controlling the toner image forming device to perform a special image forming operation such that the amount of toner input to the cleaning blade in the special image forming operation is greater than the amount of toner input to the cleaning blade in the normal image forming operation, and then stopping the image bearer.
Abstract:
An image forming apparatus includes a latent image carrier to carry a latent image on a surface thereof, a developing device to develop the latent image with toner to form a toner image on the surface of the latent image carrier, a transfer unit to transfer the toner image onto a recording medium, and a controller. The controller executes an image density adjustment control of adjusting a developing bias to obtain a target image density. The controller further executes a forced toner consumption control of forcibly consuming the toner contained in the developing device by attaching the toner to the latent image carrier to form a toner pattern on the surface of the latent image carrier. The controller executes the forced toner consumption control to forcibly consume a smaller amount of toner in response to a higher developing bias as adjusted by the image density adjustment control.
Abstract:
An image forming apparatus includes a latent image bearing member, a charging unit, a charging power source, a latent image writing unit, a development unit, a transfer unit, a toner detector, and a controller. The controller causes a background fog pattern to be formed on a surface of the latent image bearing member. In addition to the background fog pattern, the controller causes a latent image to be developed to form a toner image used for position identification on the surface of the latent image bearing member. The controller identifies a time when the toner image used for position identification has entered a detection range of the toner detector based on a change in outputs of the toner detector to determine a time when each of sections of the background fog pattern enters the detection range based on the identified time.
Abstract:
An image forming apparatus includes a latent image carrier to carry a latent image on a surface thereof, a developing device to develop the latent image with toner to form a toner image on the surface of the latent image carrier, a transfer unit to transfer the toner image onto a recording medium, and a controller. The controller executes an image density adjustment control of adjusting a developing bias to obtain a target image density. The controller further executes a forced toner consumption control of forcibly consuming the toner contained in the developing device by attaching the toner to the latent image carrier to form a toner pattern on the surface of the latent image carrier. The controller executes the forced toner consumption control to forcibly consume a smaller amount of toner in response to a higher developing bias as adjusted by the image density adjustment control.
Abstract:
An image forming apparatus including a fixing liquid applicator to apply a fixing liquid to a recording medium, a transfer device to transfer a toner image from a toner image bearing member onto the recording medium to which the fixing liquid is applied while the toner image is in contact with the fixing liquid, and a fixing device to fix the toner image on the recording medium by heating the toner image and the fixing liquid. The fixing liquid comprises a plasticizer having a function to swell and soften a toner.
Abstract:
An image forming device, including a toner bearer including plural linear electrodes located at a first regular pitch in a crosswise direction thereof, flying a toner on the surface thereof between the plural linear electrodes with a pulse voltage thereto to form a floating toner layer; and a substrate including plural hole-electrode combinations arranged in a longitudinal direction of the linear electrodes, each formed of a through-hole and a hole-adjacent electrode located close to the through-hole, wherein the floating toner layer is formed in an area facing the through-hole, and a toner passes through only the through-holes facing a desired image from the floating toner layer with a record on or off voltage, and the plural hole-electrode combinations are lined at a second regular pitch in a crosswise direction of the toner bearer, and the second regular pitch is an integral multiple of the first regular pitch.
Abstract:
The present invention provides an enhancer for enhancing the activity of oxidized protein hydrolase. The oxidized protein hydrolase activity enhancer according to the present invention contains an extract of at least one plant selected from the group consisting of Compositae Anthemis, Saururaceae Houttuynia, Rosaceae Crataegus, and Vitaceae Vitis.
Abstract:
An image forming apparatus, including a fixing liquid applicator applying a fixing liquid including a plasticizer swelling and softening a toner forming a toner image to fix on a recording medium thereto before bearing the toner image; a transferer transferring the toner image on a toner image bearer onto the recording medium while contacting the toner image to the fixing liquid thereon; and a fixing device heating the toner image and the fixing liquid to fix the toner image thereon, wherein the fixing liquid applicator comprises an application member bearing the fixing liquid on its surface and apply the liquid on a surface of the recording medium the toner image is transferred onto; a feeder feeding the fixing liquid to the application member; and an inducement mechanism inducing the fixing liquid pooling at a delivery point where the feeder feeds the fixing liquid to the application member out of the point.
Abstract:
An image forming apparatus includes a fixing liquid applicator to apply a fixing liquid to a recording medium before a toner image is transferred on the recording medium, a transfer device to transfer a toner image from a toner image bearing member onto the recording medium applied with the fixing liquid, and a fixing device to fixe the toner image on the recording medium by heating. The fixing liquid applicator includes an application member disposed opposing a face of the recording medium on which the toner image is transferred to apply to the recording medium the fixing liquid borne on a surface of the application member, a supply unit to supply the fixing liquid to the application member, and a sealing device to form along with the application member a sealed space in which the supply unit and the fixing liquid to be supplied to the application member are sealed.