# US 2025/0083447 A1 · Liquid ejecting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0083447 A1 - Document ID: US20250083447A1 - Status: Published application - Kind: A1 - Application number: 18/825,631 - Filed: 2024-09-05 - Published: 2025-03-13 - Earliest claimed: 2023-09-08 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Yusuke KATO; Rina TODA - Web page: https://patentgrep.com/patent/US20250083447A1 ## CPC - B41J 2/17566: {Ink level or ink residue control} - B41J 2/17503: {Ink cartridges} - B41J 2/17509: {Whilst mounted in the printer} - B41J 2/17513: {Inner structure} - B41J 2/17553: {Outer structure} - B41J 29/02: Framework - B41J 29/13: Cases or covers - B41J 2002/17573: {using optical means for ink level indication} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A liquid ejecting device includes a device main body including a liquid ejecting head configured to eject a liquid to a medium and a liquid accommodating unit configured to accommodate the liquid to be ejected from the liquid ejecting head, wherein the liquid accommodating unit includes a supplying port of the liquid and an opening and closing cover configured to be switched between a closed state in which the supplying port is covered and an open state in which the supplying port is exposed, and a light-emitting unit is provided at the opening and closing cover, the light-emitting unit being configured to emit light in accordance with a remaining amount of the liquid accommodated in the liquid accommodating unit. ## Claims ### Claim 1 A liquid ejecting device comprising: a device main body including a liquid ejecting head configured to eject a liquid to a medium; and a liquid accommodating unit configured to accommodate the liquid to be ejected from the liquid ejecting head, wherein the liquid accommodating unit includes a supplying port of the liquid and an opening and closing cover configured to be switched between a closed state in which the supplying port is covered and an open state in which the supplying port is exposed, and a light-emitting unit is provided at the opening and closing cover, the light-emitting unit being configured to emit, in accordance with a state of the device main body, light emitted by a light source. ### Claim 2 (depends on 1) The liquid ejecting device according to claim 1, wherein the light-emitting unit emits light in accordance with a remaining amount of the liquid accommodated in the liquid accommodating unit. ### Claim 3 (depends on 1) The liquid ejecting device according to claim 1, wherein the light-emitting unit is provided at an upper end portion of the opening and closing cover. ### Claim 4 (depends on 3) The liquid ejecting device according to claim 3, wherein the light-emitting unit is provided in a ring shape along an outer periphery of the opening and closing cover at the upper end portion of the opening and closing cover. ### Claim 5 (depends on 4) The liquid ejecting device according to claim 4, wherein a region inside the light-emitting unit is recessed at the opening and closing cover. ### Claim 6 (depends on 5) The liquid ejecting device according to claim 5, wherein the opening and closing cover is opened or closed by rotating with the upper end portion as a free end during rotation, and the opening and closing cover in the closed state is opened by forward movement of the upper end portion, and the opening and closing cover in the open state is closed by backward movement of the upper end portion. ### Claim 7 (depends on 4) The liquid ejecting device according to claim 4, wherein a light-emitting part of the light-emitting unit visually moves along the outer periphery of the opening and closing cover. ### Claim 8 (depends on 2) The liquid ejecting device according to claim 2, wherein the liquid accommodating unit includes, at a side surface of the liquid accommodating unit, a remaining amount visual recognition portion configured to cause the remaining amount of the liquid to be visually recognized, and the light-emitting unit is provided at a lower end portion of a side surface of the opening and closing cover, the side surface of the opening and closing cover being located above the remaining amount visual recognition portion. ### Claim 9 (depends on 3) The liquid ejecting device according to claim 3, wherein the opening and closing cover includes a light-guiding member constituting the upper end portion of the opening and closing cover, the light-guiding member being a member on which light emitted by the light source is incident and from which the light incident exits to an outside. ### Claim 10 (depends on 1) The liquid ejecting device according to claim 1, further comprising: a reading unit configured to be opened and closed at a top of the device main body and read an image of a document, wherein the reading unit includes a notch portion at a corner portion on a device front side, and a part of the liquid accommodating unit is inserted into the notch portion, and a space above the liquid accommodating unit is open. ### Claim 11 (depends on 1) The liquid ejecting device according to claim 1, wherein an external appearance pattern of a housing forming an outer surface of the liquid accommodating unit has a first color dotted with a second color, the first color serving as a base, the second color being different from the first color in at least one of hue, lightness, or saturation.