# US 2021/0276337 A1 · Horizontal interface for fluid supply cartridge having digital fluid level sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276337 A1 - Document ID: US20210276337A1 - Status: Published application - Kind: A1 - Application number: 16/316,317 - Filed: 2016-07-27 - Published: 2021-09-09 - Earliest claimed: 2016-07-27 - Assignees: Hewlett-Packard Development Company, L.P. - Applicants: Hewlett-Packard Development Company, L.P. - Inventors: Anthony D. Studer; David C. Harvey; Michael W. Cumbie - Web page: https://patentgrep.com/patent/US20210276337A1 ## CPC - B41J 2/17513: {Inner structure} - B41J 2/1752: {Mounting within the printer} - B41J 2/17566: {Ink level or ink residue control} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A horizontal interface for a fluid supply cartridge is to connect the fluid supply cartridge to a fluid-ejection device. The horizontal interface includes one or more fluidic interconnect septums to horizontally fluidically interconnect a supply of fluid of the fluid supply cartridge to the fluid-ejection device. The horizontal interface includes an electrical interface to horizontally conductively connect a digital fluid level sensor of the fluid supply cartridge to a corresponding electrical interface of the fluid-ejection device. ## Claims ### Claim 1 A horizontal interface for a fluid supply cartridge to connect the fluid supply cartridge to a fluid-ejection device, comprising: one or more fluidic interconnect septums to horizontally fluidically interconnect a supply of fluid of the fluid supply cartridge to the fluid-ejection device; and an electrical interface to horizontally conductively connect a digital fluid level sensor of the fluid supply cartridge to a corresponding electrical interface of the fluid-ejection device. ### Claim 2 A fluid supply cartridge horizontally insertable into a fluid-ejection device, comprising: a housing; a supply of fluid within the housing; a digital fluid level sensor within the housing and in contact with the fluid to measure a level of the fluid within the housing; and a horizontal interface at an end of the housing to connect the fluid supply cartridge to a fluid-ejection device, comprising: a fluid interconnect septum to horizontally fluidically interconnect the supply of fluid to the fluid-ejection device; an electrical interface to horizontally conductively connect the digital fluid level sensor to a corresponding electrical interface of the fluid-ejection device. ### Claim 3 (depends on 2) The fluid supply cartridge of claim 2, wherein the fluid interconnect septum is a first fluidic interconnect septum to supply the fluid of the fluid supply cartridge to the fluid-ejection device, and wherein the horizontal further comprises a second fluidic interconnect septum to return the fluid and air from the fluid-ejection device to the fluid supply cartridge. ### Claim 4 (depends on 3) The fluid supply cartridge of claim 3, wherein the first fluidic interconnection is disposed below the second fluidic interconnect septum, and the second fluidic interconnect septum is disposed below the electrical interface. ### Claim 5 (depends on 3) The fluid supply cartridge of claim 3, wherein the first fluidic interconnection is disposed below the electrical interface, and the electrical interface is disposed below the second fluidic interconnect septum. ### Claim 6 (depends on 2) The fluid supply cartridge of claim 2, wherein the electrical interface comprises: a horizontally oriented electrical interface having a first surface and a second surface opposite the first surface; a plurality of electrical contacts on one or more of the first surface and the second surface. ### Claim 7 (depends on 6) The fluid supply cartridge of claim 6, wherein the electrical contacts are just on the first surface. ### Claim 8 (depends on 6) The fluid supply cartridge of claim 6, wherein the electrical contacts comprise: one or more first electrical contacts on the first surface; and one or more second electrical contacts on the second surface. ### Claim 9 (depends on 6) The fluid supply cartridge of claim 6, wherein the horizontally oriented electrical interface is a circuit board insertable into a corresponding connector of the corresponding electrical interface of the fluid-ejection device. ### Claim 10 (depends on 6) The fluid supply cartridge of claim 6, wherein the horizontally oriented electrical interface is a connector into which a corresponding circuit board of the corresponding electrical interface of the fluid-ejection device is insertable. ### Claim 11 (depends on 6) The fluid supply cartridge of claim 6, wherein the horizontally oriented electrical interface is an integrated part of the digital fluid level sensor. ### Claim 12 (depends on 2) The fluid supply cartridge of claim 2, wherein the electrical interface comprises: a vertically oriented electrical interface having a surface; a plurality of electrical contacts on the surface. ### Claim 13 (depends on 12) The fluid supply cartridge of claim 12, wherein the vertically oriented electrical interface is a circuit board physically pressable against a corresponding compression connector of the corresponding electrical interface of the fluid-ejection device. ### Claim 14 (depends on 12) The fluid supply cartridge of claim 12, wherein the vertically oriented electrical interface is a compression connector against a corresponding electrical interface of the fluid-ejection device is physically pressable. ### Claim 15 (depends on 12) The fluid supply cartridge of claim 12, wherein the vertically oriented electrical interface is an integrated part of the digital fluid level sensor and is physically pressable against a corresponding compression connector of the corresponding electrical interface of the fluid-ejection device.