Abstract: An image forming apparatus includes an image forming portion including a photosensitive member and a developing portion configured to develop, with toner, an electrostatic latent image formed on the photosensitive member, the image forming portion being configured to form an image on the sheet, a first frame including an upper space supporting the image forming portion and a lower space under the upper space, an accommodating portion configured to accommodate the sheet, a feeding portion configured to feed the sheet accommodated in the accommodating portion, and a supply container configured to contain the toner to be supplied to the developing portion of the image forming portion. The accommodating portion and the feeding portion are provided in the lower space and, alternatively, the supply container is provided in the lower space together with a second frame which is mountable to a lower portion of the first frame.

Abstract: A print apparatus is disclosed. The print apparatus comprises a container-receiving unit for receiving a reusable print agent container; a print agent reservoir for storing print agent to be consumed by the print apparatus during a printing operation; a pump for transferring print agent between a reusable print agent container positioned in the container-receiving unit and the print agent reservoir; and processing circuitry. The processing circuitry is to operate the pump to transfer print agent of a first concentration from the reusable print agent container to the print agent reservoir; and, responsive to determining that a volume of print agent of the first concentration in the reusable print agent container has fallen below a threshold volume, operate the pump to transfer a volume of print agent of a second, lower concentration from the print agent reservoir to the reusable print agent container. A method and a machine-readable medium are also disclosed.

Abstract: Disclosed is a method to mitigate deterioration of printing fluid in a tank of a printer. The method comprises: draining printing fluid from a tank of a printer, and stopping the draining before the tank is empty, wherein the printing fluid comprises solids suspended in imaging oil, filtering the printing fluid drained from the tank, to separate at least some of the solids from the imaging oil, passing the filtered imaging oil to a reservoir; and then passing imaging oil from the reservoir to the tank. Also disclosed is a printer and a system to perform the method.

Abstract: An image forming apparatus includes: an image former that forms on a recording material a toner image based on input image information; a fixer that fixes a toner image formed on the recording material; and a hardware processor that controls the image former and the fixer in which the hardware processor controls the image former to supply, to a region where no toner is provided between toner images based on the input image information, complementing toner having a thermal conductivity higher than a thermal conductivity of toner for forming the toner image based on input image information.

Abstract: Provided is a liquid developer supply device including a supply roller that rotates and holds liquid developer in a recessed portion formed in an outer circumferential surface to supply the liquid developer to a receiving member, a liquid developer supply unit that supplies liquid developer between a seal member which is in contact with the supply roller on an upstream side in a rotating direction and a regulation member which is in contact with the supply roller on a downstream side, and that forms a liquid developer reservoir, and a supply unit that supplies a cleaning liquid to a contact portion from an upstream side of the contact portion between the supply roller and the seal member, in the rotating direction of the supply roller, such that the cleaning liquid flows down along the seal member due to gravity.

Abstract: A liquid development device includes a storage section storing a liquid developer in which toner is dispersed, a development member to which the liquid developer stored in the storage section is applied using an application unit, a removing device that, after an electrostatic latent image in a latent image-holding member is developed, removes the liquid developer remaining on the development member, and a shearing device that is provided in a path through which the liquid developer removed using the removing device is returned to the storage section, and applies a shear force to the liquid developer removed using the removing device by making the liquid developer pass through a contact section of two members at least one of which rotates and that have different velocities from each other.

Abstract: A developing device, includes a developing member that forms a first nip with a latent image forming member on which a latent image is formed, and develops the latent image as a toner image using a developer containing a toner and a first liquid, a first supply member that forms a second nip with the developing member, and supplies the developer to the developing member, and a second supply member that faces the developing member at an upstream of the first nip in the developing member in a rotation direction of the developing member and at a downstream of the second nip, and supplies a second liquid to the developing member.

Abstract: Provided is a recovery device including a recovery mechanism that recovers a liquid developer from a holding member which revolves while holding the liquid developer, the liquid developer being not delivered from the holding member to a delivery target member and remains on the holding member, a reception section that receives the liquid developer which the recovery mechanism recovers, an addition member that adds a diluent, which reduces a toner concentration of the liquid developer, to the liquid developer that the reception section receives, a porous section through which the liquid developer passes, and a transport member that moves to transport the liquid developer which the reception section receives to the porous section, and causes the liquid developer to pass through the porous section.

Abstract: A liquid development device includes a storage section storing a liquid developer in which toner is dispersed, a development member to which the liquid developer stored in the storage section is applied using an application unit, a removing device that, after an electrostatic latent image in a latent image-holding member is developed, removes the liquid developer remaining in the development member, and a shearing device that is provided in a path through which the liquid developer removed using the removing device is returned to the storage section, and applies a shear force to the liquid developer by making the liquid developer pass through a contact section of two members either or both of which rotate and that have different circumferential velocities from each other.

Abstract: In a digital printer, print groups are provided each having a respective developer station using liquid developer comprising carrier fluid and toner. A supply arrangement to supply the print groups is provided with fluids and to accept used and unconsumed fluids from the print groups. The supply arrangement has a first supply unit common to all print groups to supply the print groups with the fluids, at least one reservoir containing a carrier fluid. A second supply unit per color supplies the respective print group for the color with liquid developer. The second supply unit comprises a first buffer container connected with a reservoir, the reservoir containing carrier fluid and concentrated toner as toner concentrate. A second buffer container for carrier fluid is connected with the carrier fluid reservoir in the first supply unit.

Abstract: In a digital printer comprising a developer station using liquid developer, the developer station has an application unit via which liquid developer is transported to a charge image carrier. The supply system adjacent and lateral to the application unit supplies liquid developer to the application unit. A pre-chamber and an electrode segment are provided, the pre-chamber being filled with liquid developer and open towards the application unit. The pre-chamber is open at a top such that a compensation volume of liquid developer with an open surface is created past which the application unit passes. The electrode segment is arranged adjacent to the pre-chamber and to a side of the application unit such that it forms a gap with the application unit through which the liquid developer is directed, the electrode segment being at an electrical potential such that toner of the liquid developer transfers to the application unit in the gap.

Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).

Abstract: A system for applying liquid toner to a developing member in a digital printer. The system includes a reservoir for storing liquid toner, a feed member and a developing member. The feed member is arranged to rotate to transfer liquid toner from the reservoir to the developing member. The system includes a feed assist member. The feed member is arranged for rotating in contact with the feed assist member and making contact with the feed assist member along a contact area which is located, when the system is operational, in the liquid toner in the reservoir. The feed assist member is provided with a compressible contact portion arranged for being compressed in the contact area between the feed member and the feed assist member.

Abstract: A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (?SP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin.

Abstract: A deinkable liquid toner is disclosed herein. The deinkable liquid toner includes a non-polar carrier fluid, a styrene-alkyl acrylate, and a colorant. The styrene-alkyl acrylate has a glass transition temperature ranging from about 65 C to about 100 C. A method for making the deinkable liquid toner and a printing system are also disclosed herein.

Abstract: In a digital printer, print groups are provided each having a respective developer station using liquid developer comprising carrier fluid and toner. A supply arrangement to supply the print groups is provided with fluids and to accept used and unconsumed fluids from the print groups. The supply arrangement has a first supply unit common to all print groups to supply the print groups with the fluids, at least one reservoir containing a carrier fluid. A second supply unit per color supplies the respective print group for the color with liquid developer. The second supply unit comprises a first buffer container connected with a reservoir, the reservoir containing carrier fluid and concentrated toner as toner concentrate. A second buffer container for carrier fluid is connected with the carrier fluid reservoir in the first supply unit.

Abstract: In a method or apparatus to optimize transfer of a developer fluid having toner embedded in a carrier fluid in an electrophoretic printing apparatus, charge images of print images are generated on an intermediate image carrier. The print images are inked into toner images by means of a developer station with the developer fluid. The toner images are transfer printed onto a printing substrate in a transfer printing zone by a transfer unit. The toner embedded in the carrier fluid is thus transported from the developer station to the intermediate image carrier in a first transport path segment and from the transfer unit to the printing substrate in a second transport path segment. A temperature acting on the carrier fluid in the first transport path segment is above a melting point of the carrier fluid, and a temperature acting on the carrier fluid in the second transport path segment is below the melting point of the carrier fluid.

Abstract: Provided is a liquid development apparatus having a constitution in which liquid developer containing carrier liquid with toner dispersed therein is supplied from a liquid developer/cleaning liquid supply member on a pool forming member arranged facing to a supply roller so as to form a pool of the liquid developer, from which pool the liquid developer is supplied to the supply roller, wherein a liquid developer/cleaning liquid supply member supplies cleaning liquid on a pool forming member to form a suitable pooling portion of the cleaning liquid and the liquid developer remaining on the surface of the supply roller is removed and cleaned.

Abstract: A printing system utilizing inks with high solids content includes a mixing unit for receiving a high solids content ink and producing a concentrated ink and an interim tank for receiving the concentrated ink from the mixing unit. An ink tank receives the concentrated ink from the interim tank and produces printing ink. An liquid electro-photographic print engine receives the printing ink from the ink tank. A fluid return line is connected between the mixing unit and at least one of the interim tank and the ink tank, the mixing unit receiving fluid from at least one of the interim tank and the ink tank and mixing the fluid with the high solids content ink. A method for liquid electro photographic printing using high solid content ink is also provided.

Abstract: In a device or method to develop potential images of images to be printed, the potential images being generated on an intermediate image carrier using developer fluid having a charged toner and carrier fluid, developing with an applicator device the potential images, the applicator device directing the developer fluid across the intermediate image carrier. With the feed device the developer fluid is supplied to the applicator device, the feed device discharging excess developer fluid depleted of toner and that is not transferred to the applicator device. With a conditioning device the carrier fluid is taken from the applicator device and the taken up carrier fluid is discharged. With a cleaning device residual developer fluid remaining after development of the potential images is cleaned off of the applicator device and the residual developer fluid is supplied to a chamber arranged in the cleaning device.

Abstract: In a digital printer comprising a developer station using liquid developer, the developer station has an application unit via which liquid developer is transported to a charge image carrier. The supply system adjacent and lateral to the application unit supplies liquid developer to the application unit. A pre-chamber and an electrode segment are provided, the pre-chamber being filled with liquid developer and open towards the application unit. The pre-chamber is open at a top such that a compensation volume of liquid developer with an open surface is created past which the application unit passes. The electrode segment is arranged adjacent to the pre-chamber and to a side of the application unit such that it forms a gap with the application unit through which the liquid developer is directed, the electrode segment being at an electrical potential such that toner of the liquid developer transfers to the application unit in the gap.

Abstract: An image forming apparatus includes a developing device, a liquid developer supplying device including a liquid developer flow path and supplying a liquid developer containing a solid content to the developing device through a discharge port of the liquid developer flow path, a storage container storing the liquid developer, a conveying mechanism capable of feeding the liquid developer from the storage container to the liquid developer flow path and feeding the liquid developer in the liquid developer flow path back to the storage container and a controller controlling the conveying mechanism. At the time of non-developing operation in which a toner image forming operation is not performed by the developing device, the controller controls the conveying mechanism to feed at least a part of the liquid developer present in the liquid developer flow path back to the storage container.

Abstract: A developing apparatus includes: a developer accumulation portion; a developer drawing-up portion that draws up the liquid developer accumulated in the developer accumulation portion; a developing roller that supplies the liquid developer to the image supporting body in a region facing the image supporting body; a developer removing portion that is disposed to contact a predetermined position on a surface of the developing roller on a downstream side to the region facing the image supporting body in a rotational direction of the developing roller, and removes the liquid developer remaining on the surface of the developing roller; and an accumulated developer delivery portion that delivers the liquid developer accumulated in the developer accumulation portion to a predetermined region on the surface of the developing roller between the region facing the image supporting body and the predetermined position contacting the developer removing portion.

Abstract: An ink tank apparatus usable with an image forming apparatus and methods of mixing ink in an ink tank apparatus are disclosed. The ink tank apparatus and methods include directing ink particles against at least one of an impeller and an interior surface of a head housing to reduce a particle size of the respective ink particles.

Abstract: A liquid-level detection device detects the liquid level in the developer storing container for storing liquid developer, and includes a first water wheel, a first rotation detection mechanism, and first liquid-level detection device. The first water wheel is disposed in the interior of the developer storing container, and is configured to be rotated by liquid developer to be supplied to the developer storing container. The first rotation detection mechanism is configured to detect a rotation state of the first water wheel. The first liquid-level detection device detects the liquid level of liquid developer based on a result detected by the rotation detection mechanism.

Abstract: A driving force produced by a first driving motor is transmitted to a developing roller and an intermediate application roller by a first drive transmission unit, and the developing roller and the intermediate application roller are rotated as a result. The developing roller and the intermediate application roller thus take the first driving motor as a drive source, and receive the driving force from the first driving motor via the same first drive transmission unit. As a result, the phases of the fluctuation in a rotational component of the first driving motor and the cyclic fluctuation of gear interlocking match, which reduces a rotational velocity difference between the developing roller and the intermediate application roller.

Abstract: A sheet-fed scanning device with cleaning mechanism is provided. The sheet-fed scanning device includes a housing, a scanning module for scanning a fed-in document, and a cleaning curtain whose one end is fixed on the sheet-fed scanning device. The cleaning curtain is disposed in a sheet-fed direction at the front end of the scanning module, and the edge of the other end of the cleaning curtain is elastically in contact with the fed-in document for cleaning a to-be-scanned surface of the fed-in document. The invention is simple in structure and effective in cleaning the fed-in document. The cleaning mechanism does not cost much, but avoids the scanning quality being affected due to the large friction of the cleaning element. The cleaning mechanism ensures long-term cleanness of the to-be-scanned surface of the fed-in document as well as the cleanness of the glass window of the scanning module and the scanning quality.

Abstract: A liquid developer cartridge detachably mounted in an image forming device includes a first accumulating section and a second accumulating section. The first accumulating section accumulates therein first liquid developer to be supplied to the image forming device. The liquid developer contains developing agent and carrier liquid. The second accumulating section accumulates therein one of the liquid carrier and second liquid developer having a developing agent concentration ratio lower than that of the first liquid developer.

Abstract: Provided is a liquid developer concentration adjusting apparatus and a method so that the concentration can be adjusted easily and efficiently without using time and effort in liquid volume control. Further, the apparatus and method enable the concentration adjustment to be efficiently accomplished in a short period of time with reduced volume of required supply developer to be added for the adjustment independently of the initial concentration of the developer by concurrently measuring the concentration of developer, even if the concentration thereof is high. In the control of the concentration adjustment, the developer is allowed to overflow through an opening of the concentration adjusting container, and the concentration adjustment by using supply developer or the supply speed of the supply developer is started before the start of the overflow.

Abstract: An electrostatographic printing machine has a liquid toner supply chain incorporating at least a toner supply device (10), a metering roller (21) and a development member (31) and an image carrying member (41). An electrostatic charging device (33) acts onto the development member to impress an electrostatic charge onto the development member and to induce a voltage thereon with respect to a machine electrical common earth potential. The toner supply roller, the metering roller and the developer member are each electrically connected to the machine electrical common earth potential (37) via a respective voltage regulating or controlling means (25, 27, 35) to regulate or control induced voltages on each of the toner supply roller, the metering roller and the developer member.

Abstract: An image forming device with a liquid developer containing a developing agent and a liquid carrier is provided. The image-forming device includes a casing, an accumulation unit, a supply inlet, a cover, and a support part. The accumulation unit is provided in the casing for accumulating therein the liquid developer and the liquid carrier. The supply inlet is in communication with the accumulation unit and fluidly connectable with a replenishing container containing the liquid developer and the liquid carrier. The cover is configured to selectively provide an open phase and a closed phase with respect to the casing, and configured to expose the supply inlet at the open phase. The support part is provided on the cover and configured to detachably mount thereon the replenishing container at the open phase in an orientation capable of discharging the liquid developer and liquid carrier into the accumulation unit through the supply inlet.

Abstract: A liquid developer transport device includes a channel switching part that dispenses liquid developer to a first channel or a second channel. A filtering part filters liquid developer flowing in the first channel, and a first storage part stores the filter liquid developer. A second storage part stores liquid developer flowing in the second channel. The channel switching part switches channels when a toner particle concentration is more than a predetermined concentration.

Abstract: A wet type developing apparatus is provided which allows printing in a quality that is stable at an increased printing speed and also with changes in physical property of a liquid developer. The wet type developing apparatus to this end includes a liquid developer feed pathway which comprises a developing roller 7 for feeding the liquid developer onto a photoconductor drum 3; an anilox roller 9 immersed in part in the liquid developer and driven to rotate in rotational contact with the developing roller; and a doctor blade 11 disposed in contact with a surface of the anilox roller for controlling the rate of drawing up of the liquid developer. The developing and anilox rollers have their peripheral surfaces moving in an identical direction and at an identical rate of movement in an area of their rotational contact.

Abstract: Provided is a liquid development apparatus having a constitution in which liquid developer containing carrier liquid with toner dispersed therein is supplied from a liquid developer/cleaning liquid supply member on a pool forming member arranged facing to a supply roller so as to form a pool of the liquid developer, from which pool the liquid developer is supplied to the supply roller, wherein a liquid developer/cleaning liquid supply member supplies cleaning liquid on a pool forming member to form a suitable pooling portion of the cleaning liquid and the liquid developer remaining on the surface of the supply roller is removed and cleaned.

Abstract: An image forming apparatus includes a developing device, a liquid developer supplying device including a liquid developer flow path and supplying a liquid developer containing a solid content to the developing device through a discharge port of the liquid developer flow path, a storage container storing the liquid developer, a conveying mechanism capable of feeding the liquid developer from the storage container to the liquid developer flow path and feeding the liquid developer in the liquid developer flow path back to the storage container and a controller controlling the conveying mechanism. At the time of non-developing operation in which a toner image forming operation is not performed by the developing device, the controller controls the conveying mechanism to feed at least a part of the liquid developer present in the liquid developer flow path back to the storage container.

Abstract: A developing apparatus includes: a developer accumulation portion; a developer drawing-up portion that draws up the liquid developer accumulated in the developer accumulation portion; a developing roller that supplies the liquid developer to the image supporting body in a region facing the image supporting body; a developer removing portion that is disposed to contact a predetermined position on a surface of the developing roller on a downstream side to the region facing the image supporting body in a rotational direction of the developing roller, and removes the liquid developer remaining on the surface of the developing roller; and an accumulated developer delivery portion that delivers the liquid developer accumulated in the developer accumulation portion to a predetermined region on the surface of the developing roller between the region facing the image supporting body and the predetermined position contacting the developer removing portion.

Abstract: A liquid developer collecting system includes a developing roller cleaning unit that collects liquid developer on a developing roller; a developer storage unit that stores the liquid developer collected by the developing roller cleaning unit; and a concentration control unit that stores the liquid developer fed from the developer storage unit and controls the concentration of the liquid developer.

Abstract: An image forming apparatus includes a latent image carrier on which a latent image is formed, a developer carrier being in contact with the latent image carrier and configured to develop the latent image by using a liquid developer that contains toner and a carrier liquid, an image carrier belt being in contact with the latent image carrier, where the latent image carrier is configured to transfer the latent image onto an area of the image carrier belt, a transfer roller including a concave section on a circumferential surface thereof and a sheet member being configured on a part of the circumferential surface other than where the concave section is wherein the transfer roller is configured to transfer the latent image onto a transfer material, and a control unit being configured to control the area of the image carrier belt being in contact with the sheet member via the transfer material.

Abstract: A development device includes a developer container reserving a liquid developer containing toner particles and a carrier liquid. A developer supply member supplies a developer supporting member with liquid developer. An agitating member is disposed in the developer container and supplies the developer supply member with the liquid developer. A developer supporting member cleaning member removes liquid developer on the developer supporting member.

Abstract: A developing device includes: a developer carrying body that carries liquid developer containing toner and carrier liquid; a developer supplying member adapted to rotate in a first sense of rotation to supply liquid developer to the developer carrying body; a contact member arranged at a first side relative to a virtual perpendicular plane passing through the axis of the developer supplying member so as to contact the developer supplying member; a supply section that stores liquid developer to be supplied by the developer supplying member to the developer carrying body; and an agitating member adapted to rotate in a second sense of rotation different from the first sense of rotation and arranged at a second side relative to the virtual perpendicular plane passing through the axis of the developer supplying member.

Abstract: A development device includes a developer supply member that supplies a developer supporting member with liquid developer from a developer container. An agitating member is disposed in the developer container supplies the developer supply member with the liquid developer. The developer container includes a partition member partitioning between and extending above first and second developer holding sections. The partition member is aligned in parallel to an axial direction of rotation of the agitating member and allows liquid developer to move between the first and second developer holding sections.

Abstract: An objective of the present invention is to provide a liquid development apparatus that can form a uniformly thin layer of high-density liquid developer on the development roller, thereby forming images free of uneven density or toner fog, and another objective is to provide an inexpensive and compact liquid development apparatus which increases the flexibility in the arrangement. A liquid development apparatus in which a liquid developer supply head having a liquid developer discharge outlet for applying a liquid developer on the surface of the development roller is equipped with a section for reducing the viscosity of the liquid developer.

Abstract: A development device includes a developer reservoir that stores liquid developer containing toner and carrier liquid, a supply port that is arranged at the developer reservoir to supply the liquid developer to the developer reservoir, a supply roller that has helical grooves and supplies the liquid developer stored in the developer reservoir and a developer carrier that is supplied with the liquid developer by the supply roller and carries the supplied liquid developer, and the supply port being arranged in the direction opposite to the direction of conveyance by the helical grooves of liquid developer stored in the developer reservoir relative to the axial center of the supply roller.

Abstract: A liquid developer cartridge detachably mounted in an image forming device includes a first accumulating section and a second accumulating section. The first accumulating section accumulates therein first liquid developer to be supplied to the image forming device. The liquid developer contains developing agent and carrier liquid. The second accumulating section accumulates therein one of the liquid carrier and second liquid developer having a developing agent concentration ratio lower than that of the first liquid developer.

Abstract: An image forming device with a liquid developer containing a developing agent and a liquid carrier, the image-forming device includes a casing, an accumulation unit, a supply inlet, a cover, and a support part. The accumulation unit is provided in the casing for accumulating therein the liquid developer and the liquid carrier. The supply inlet is in communication with the accumulation unit and fluidly connectable with a replenishing container containing the liquid developer and the liquid carrier. The cover is configured to selectively provide an open phase and a closed phase with respect to the casing, and configured to expose the supply inlet at the open phase. The support part is provided on the cover and detachably mounting thereon the replenishing container at the open phase in an orientation capable of discharging the liquid developer and liquid carrier in the replenishing container into the accumulation unit through the supply inlet.

Abstract: A developing device includes: a developer carrier which carries liquid developer containing toner and carrier liquid; a developer carrier contact member which contacts the developer carrier; and a developer carrier contact control unit which controls the condition where the developer carrier and the developer carrier contact member contact each other with first contact pressure and the condition where the developer carrier and the developer carrier contact member contact each other with second contact pressure lower than the first contact pressure.

Abstract: A developing device includes: a supply storage section storing liquid developer including toner and carrier liquid; an application roller applying the liquid developer stored in the supply storage section; a developing roller supplied with the liquid developer by the application roller; a developing roller cleaning blade coming in contact with the developing roller and removing the liquid developer supplied to the developing roller; a recovery storage section storing the liquid developer removed by the developing roller cleaning blade; a wall portion configured to partition the supplied storage section and the recovery storage section from each other and having a first wall height portion higher than a lower portion of the application roller in the vertical direction and a second wall height portion lower than the lower portion in the vertical direction; and an auger transporting the liquid developer stored in the supply storage section.

Abstract: A liquid developer transport device includes: a channel switching part that dispenses a liquid developer; a first channel for flowing the liquid developer dispensed by the channel switching part; a filtering part provided in the first channel for filtering the liquid developer flowing in the first channel; a first storage part connected to the first channel for storing the liquid developer filtered by the filtering part; a second channel for flowing the liquid developer dispensed by the channel switching part; and a second storage part connected to the second channel for storing the liquid developer flowing in the second channel.

Abstract: A toner conveyance unit is provided that can reliably prevent a toner from leaking and scattering. And an image forming apparatus is also provided having the toner conveyance unit. When a circular arc-shaped shutter member and a rotary shutter member are closed, a first conveyance part and a second conveyance part are adapted to separate from each other. When the circular arc-shaped shutter member and the rotary shutter member are open, the circular arc-shaped shutter member and the rotary shutter member rotate integrally so as to be enclosed in the tubular cylinder part, and to move a through hole to a position such as to constitute a portion of a second toner conveyance path, whereby the first conveyance part and the second conveyance part are adapted to be connected to each other so that a first toner conveyance path and the second toner conveyance path communicate with each other.

Abstract: A method for producing a low-cost developer container filled with developer, which is capable of stably preventing image density from being locally reduced even in the case where the entire replenishment developer is not dispersed uniformly, the developer container filled with developer, and a developer replenishing device and image forming apparatus that use this developer container filled with developer.