# US 11,029,624 B2 · Developing cartridge > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,624 B2 - Document ID: US11029624B2 - Status: Granted - Kind: B2 - Application number: 16/745,543 - Filed: 2020-01-17 - Published: 2020-05-14 - Granted: 2021-06-08 - Earliest claimed: 2015-12-25 - Assignees: Brother Kogyo Kabushiki Kaisha - Applicants: Brother Kogyo Kabushiki Kaisha - Inventors: Nao Itabashi - Web page: https://patentgrep.com/patent/US11029624B2 ## CPC - G03G 15/0865: {Arrangements for supplying new developer} - G03G 15/0863: {provided with identifying means or means for storing process- or use parameters, e.g. an electronic memory} - G03G 21/1652: {Electrical connection means} - G03G 21/1676: {for the developer unit} - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned. ## Claims ### Claim 1 A developing cartridge comprising: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction; a storage medium having an electrical contact surface; and a holder movable relative to the casing, the holder having an outer surface at which the electrical contact surface is positioned, the holder being positioned at a side of the casing in the first direction. ### Claim 2 (depends on 1) The developing cartridge according to claim 1, wherein the developing roller is positioned at one side of the casing in a second direction, and wherein the holder is movable relative to the casing in the second direction. ### Claim 3 (depends on 2) The developing cartridge according to claim 2, wherein the holder is movable relative to the casing in a third direction crossing the electrical contact surface. ### Claim 4 (depends on 3) The developing cartridge according to claim 3, wherein the third direction is crossing the first direction and the second direction. ### Claim 5 (depends on 3) The developing cartridge according to claim 3, wherein the third direction is perpendicular to the first direction and the second direction. ### Claim 6 (depends on 1) The developing cartridge according to claim 1, wherein the second direction is crossing the first direction. ### Claim 7 (depends on 1) The developing cartridge according to claim 1, wherein the second direction is perpendicular to the first direction. ### Claim 8 (depends on 1) The developing cartridge according to claim 1, wherein the developing roller is positioned at one side of the casing in a second direction, and wherein the holder includes an elastic member configured to be stretched or compressed in a third direction crossing the electrical contact surface. ### Claim 9 (depends on 8) The developing cartridge according to claim 8, wherein the elastic member is configured to be stretched or compressed between a first state and a second state, and a length in the third direction of the elastic member in the first state being greater than a length in the third direction of the elastic member in the second state. ### Claim 10 (depends on 9) The developing cartridge according to claim 9, wherein a length in the third direction of the elastic member in the second state is smaller than a natural length in the third direction of the elastic member. ### Claim 11 (depends on 8) The developing cartridge according to claim 8, wherein the elastic member is a spring. ### Claim 12 (depends on 11) The developing cartridge according to claim 11, wherein the spring is a coil spring. ### Claim 13 (depends on 1) The developing cartridge according to claim 1, further comprising: a holder cover positioned at the side of the casing in the first direction, and covering at least a portion of the holder. ### Claim 14 (depends on 13) The developing cartridge according to claim 13, wherein the holder cover has a first through-hole, and wherein the holder includes a first boss extending in the first direction and inserted through the first through-hole. ### Claim 15 (depends on 14) The developing cartridge according to claim 14, wherein the first through-hole has a dimension greater than a dimension of the first boss. ### Claim 16 (depends on 14) The developing cartridge according to claim 14, wherein the casing has a second through-hole at the side of the casing in the first direction, and wherein the holder includes a second boss extending in the first direction and positioned opposite to the first boss relative to the holder, the second boss being inserted through the second through-hole. ### Claim 17 (depends on 16) The developing cartridge according to claim 16, wherein the second through-hole has a dimension greater than a dimension of the second boss. ### Claim 18 (depends on 1) The developing cartridge according to claim 1, wherein the outer surface is configured to hold the electrical contact surface of the storage medium. ### Claim 19 (depends on 18) The developing cartridge according to claim 18, wherein the outer surface is configured to hold the storage medium. ### Claim 20 (depends on 1) The developing cartridge according to claim 1, wherein the holder is movable relative to the casing in the first direction.