# US 10,481,525 B1 · Development device manifold seal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,525 B1 - Document ID: US10481525B1 - Status: Granted - Kind: B1 - Application number: 15/964,104 - Filed: 2018-04-27 - Published: 2019-10-31 - Granted: 2019-11-19 - Earliest claimed: 2018-04-27 - Assignees: Xerox Corporation - Applicants: Xerox Corporation - Inventors: Eliud Robles Flores; Douglas A. Gutberlet; Michael Grew; Charles D. Deichmiller; Terry L. Dreier - Web page: https://patentgrep.com/patent/US10481525B1 ## CPC - 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 15/0942: {with means for preventing toner scattering from the magnetic brush, e.g. magnetic seals} - G03G 21/206: {Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone} - G03G 2221/1645: for conducting air through the machine, e.g. cooling - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A development device includes components such as a housing, a magnetic roll in the housing that moves marking material in the housing, a donor roll in the housing that is positioned to receive the marking material from the magnetic roll, a manifold in the housing, etc. The manifold has a manifold opening positioned to create airflow from the surface of the donor roll. Further, such structures include a seal over the manifold opening. The seal is a component that has a planar linear surface with seal openings that are aligned with the manifold opening. The edge of the housing adjacent the manifold opening is a first distance from the magnetic roll and the edge of the seal is a second, closer distance from the magnetic roll. ## Claims ### Claim 1 A development device comprising: a housing; a magnetic roll in the housing moving marking material in the housing; a donor roll in the housing positioned to receive the marking material from the magnetic roll; a manifold in the housing, wherein the manifold has a manifold opening positioned to create airflow from a surface of the donor roll; and a seal over the manifold opening, wherein the seal comprises a flat rectangular component having front and back planar linear surfaces ending at edges, wherein the seal has seal openings through the front and back planar linear surfaces aligned with the manifold opening, wherein a first edge of the housing adjacent the manifold opening is a first distance from the magnetic roll and a second edge of the edges of the seal is a second distance from the magnetic roll that is less than the first distance, and wherein the second edge of the seal is positioned to form a consistent gap to the magnetic roll equal to the second distance. ### Claim 2 (depends on 1) The development device according to claim 1, wherein the manifold opening is a slot and the seal openings are round. ### Claim 3 (depends on 1) The development device according to claim 1, wherein a combined area of all the seal openings is less than an area of the manifold opening. ### Claim 4 (depends on 1) The development device according to claim 1, wherein the seal openings are periodic and are positioned at equal intervals along the flat rectangular component. ### Claim 5 (depends on 1) The development device according to claim 1, wherein the flat rectangular component has dimensions to fully cover all of the manifold opening. ### Claim 6 (depends on 1) The development device according to claim 1, wherein the manifold opening comprises a space between parallel surfaces, wherein the seal contacts the parallel surfaces to cover the manifold opening. ### Claim 7 (depends on 1) The development device according to claim 1, further comprising an airflow device drawing air through the manifold to create airflow from the surface of the donor roll. ### Claim 8 A printer comprising: a media supply; a printing engine positioned to receive print media from the media supply, wherein the printing engine adds markings to the print media using a development device, and wherein the development device comprises: a housing; a magnetic roll in the housing moving marking material in the housing; a donor roll in the housing positioned to receive the marking material from the magnetic roll; a manifold in the housing, wherein the manifold has a manifold opening positioned to create airflow from a surface of the donor roll; and a seal over the manifold opening, wherein the seal comprises a flat rectangular component having front and back planar linear surfaces ending at edges, wherein the seal has seal openings through the front and back planar linear surfaces aligned with the manifold opening, wherein a first edge of the housing adjacent the manifold opening is a first distance from the magnetic roll and a second edge of the edges of the seal is a second distance from the magnetic roll that is less than the first distance, and wherein the second edge of the seal is positioned to form a consistent gap to the magnetic roll equal to the second distance. ### Claim 9 (depends on 8) The printer according to claim 8, wherein the manifold opening is a slot and the seal openings are round. ### Claim 10 (depends on 8) The printer according to claim 8, wherein a combined area of all the seal openings is less than an area of the manifold opening. ### Claim 11 (depends on 8) The printer according to claim 8, wherein the seal openings are periodic and are positioned at equal intervals along the flat rectangular component. ### Claim 12 (depends on 8) The printer according to claim 8, wherein the flat rectangular component has dimensions to fully cover all of the manifold opening. ### Claim 13 (depends on 8) The printer according to claim 8, wherein the manifold opening comprises a space between parallel surfaces, wherein the seal contacts the parallel surfaces to cover the manifold opening. ### Claim 14 (depends on 8) The printer according to claim 8, further comprising an airflow device drawing air through the manifold to create airflow from the surface of the donor roll. ### Claim 15 A seal of a development device, the seal comprising: a flat rectangular component having front and back planar linear surfaces ending at edges; and seal openings through the front and back planar linear surfaces, wherein the flat rectangular component covers a manifold opening in a housing, wherein the manifold opening is positioned to create airflow from a surface of a donor roll of the development device, wherein the seal openings are aligned with the manifold opening, wherein a first edge of the housing adjacent the manifold opening is a first distance from a magnetic roll of the development device, wherein and a second edge of the edges of the seal is a second distance from the magnetic roll that is less than the first distance, wherein the second edge of the seal is positioned to form a consistent gap to the magnetic roll equal to the second distance, and wherein the donor roll is positioned in the development device in a position to receive the marking material from the magnetic roll. ### Claim 16 (depends on 15) The seal according to claim 15, wherein the manifold opening is a slot and the seal openings are round. ### Claim 17 (depends on 15) The seal according to claim 15, wherein a combined area of all the seal openings is less than an area of the manifold opening. ### Claim 18 (depends on 15) The seal according to claim 15, wherein the seal openings are periodic and are positioned at equal intervals along the flat rectangular component. ### Claim 19 (depends on 15) The seal according to claim 15, wherein the flat rectangular component has dimensions to fully cover all of the manifold opening. ### Claim 20 (depends on 15) The seal according to claim 15, wherein the manifold opening comprises a space between parallel surfaces, wherein the seal contacts the parallel surfaces to cover the manifold opening.