# US 11,112,729 B1 · Developer supply device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,112,729 B1 - Document ID: US11112729B1 - Status: Granted - Kind: B1 - Application number: 17/155,110 - Filed: 2021-01-22 - Granted: 2021-09-07 - Earliest claimed: 2020-12-09 - Assignees: Jiangxi Kilider Technology Co., Ltd. - Applicants: Jiangxi Kilider Technology Co., Ltd. - Inventors: Jinjun Zhu; Zhongxi Li; Jiabing He - Web page: https://patentgrep.com/patent/US11112729B1 ## CPC - G03G 15/0886: {by mechanical means, e.g. shutter, plug} - G03G 15/087: {Developer cartridges having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge} - G03G 15/0898: {for preventing toner scattering during operation, e.g. seals (sealing the donor member G03G15/0817; sealing the magnetic brush G03G15/0942)} - G03G 15/0889: {for agitation or stirring} - G03G 2215/067: Toner discharging opening covered by arcuate shutter - G03G 2215/0692: using a slidable sealing member, e.g. shutter - Y02W 90/10: Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT ## Abstract A developer supply device includes a cylinder body and a left side cover and a right side cover respectively connected to two ends of the cylinder body. The left side cover is provided with a gear shaft system. The right side cover is provided with a powder outlet assembly including a seal provided on the right side cover. The seal is provided thereon with an inner powder outlet. Another end of the screw conveying rod is arranged within the seal. The seal is further provided at two ends thereof with radially protruding limit rings respectively. A sealing barrier is coaxially provided outside the seal between the two limit rings. The sealing barrier is provided thereon with an outer powder outlet and a shift block. The limit ring close to the cylinder body is provided thereon with an arc-shaped rotating slide groove having an end in communication with a limit slot. ## Claims ### Claim 1 A developer supply device, comprising a cylinder body and a left side cover and a right side cover respectively connected to two ends of the cylinder body, wherein the left side cover is provided with a gear shaft system, the gear shaft system being provided at an outside thereof with a gear side cover connected to the left side cover, and the cylinder body is provided therein with a screw conveying rod and a stirring rod, an end of the screw conveying rod and an end of the stirring rod being respectively connected to two outputs of the gear shaft system, characterized in that: the right side cover is provided with a powder outlet assembly which comprises a seal provided on the right side cover, wherein the seal is provided thereon with an inner powder outlet; another end of the screw conveying rod is arranged within the seal; and the seal is further provided at two ends thereof with radially protruding limit rings respectively, wherein a sealing barrier is coaxially provided outside the seal between the two limit rings, the sealing barrier being provided thereon with an outer powder outlet and a shift block; and the limit ring closest to the cylinder body is provided thereon with an arc-shaped rotating slide groove, an end of the rotating slide groove being in communication with a limit slot, and the sealing barrier is provided at an end thereof with a radially protruding elastic protrusion, the elastic protrusion being provided at a bottom thereof with a slide block. ### Claim 2 (depends on 1) The developer supply device according to claim 1, characterized in that a sponge is provided between the seal and the sealing barrier. ### Claim 3 (depends on 1) The developer supply device according to claim 1, characterized in that the limit ring closest to the cylinder body is provided thereon radially outward with a protruding positioning lug, and the cylinder body is provided at an end thereof closest to the right side cover with a positioning post, the positioning lug being coaxially sleeved on the positioning post. ### Claim 4 (depends on 3) The developer supply device according to claim 3, characterized in that a position and an arc length of the rotating slide groove are such that, when the sealing barrier is at two ends of the rotating slide groove, the inner powder outlet and the outer powder outlet overlap or are completely staggered. ### Claim 5 (depends on 4) The developer supply device according to claim 4, characterized in that the right side cover is welded to the cylinder body via an ultrasonic welding material, and is pressed onto an upper end surface of the positioning post by a pressing portion provided. ### Claim 6 (depends on 5) The developer supply device according to claim 5, characterized in that the cylinder body is further provided with a replenishment port located outside the right side cover, through which replenishment port developer may be replenished into the cylinder body. ### Claim 7 (depends on 1) The developer supply device according to claim 1, characterized in that the gear shaft system comprises an elastic buckle gear, a stirring gear, a transmission gear, and a conveying gear which are provided on the left side cover and meshed in sequence, wherein the screw conveying rod and the stirring rod are respectively connected to the conveying gear and the stirring gear. ### Claim 8 (depends on 7) The developer supply device according to claim 7, characterized in that: a turntable is connected to the elastic buckle gear, wherein the turntable has a gap, is provided at an edge thereof with a deformation groove, and has an elastic buckle formed at the deformation groove, and the left side cover is provided with a positioning member on which the elastic buckle may be positioned; and the gear side cover is provided with a sensing hole, and the elastic buckle gear is an irregular gear having a number of teeth that allow a certain angle of rotation of the elastic buckle gear in mesh transmission with the stirring gear.