# US 10,118,423 B2 · Recording device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,423 B2 - Document ID: US10118423B2 - Status: Granted - Kind: B2 - Application number: 15/497,765 - Filed: 2017-04-26 - Published: 2017-11-02 - Granted: 2018-11-06 - Earliest claimed: 2016-05-02 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Satoshi Nakata; Hitoshi Igarashi; Kazuo Otsuka; Masafumi Furuyama - Web page: https://patentgrep.com/patent/US10118423B2 ## CPC - B41J 25/006: {for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers} - B41J 2/16538: {with brushes or wiper blades perpendicular to the nozzle plate} - B41J 2/17566: {Ink level or ink residue control} - 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 recording device includes a carriage that has a recording head that performs recording on a medium and a plurality of liquid cartridges that house a liquid to be ejected from the recording head, the plurality of liquid cartridges being arranged in a line in a direction that intersects the movement direction of the carriage and being provided with target detection units, and a detector that includes a moving part which moves in a direction that intersects the movement direction of the carriage and that, by the movement of the moving part, detects the residual amount of the liquid between the detector and each of the target detection units of the plurality of the liquid cartridges. ## Claims ### Claim 1 A recording device comprising: a carriage that has a recording head that performs recording on a medium and a plurality of liquid cartridges that house a liquid to be ejected from the recording head, the plurality of liquid cartridges being arranged in a line in a direction that intersects a movement direction of the carriage and being provided with a target detection unit, and a detector that includes a moving part which moves the detector in a direction that intersects the movement direction of the carriage and also reciprocates in a direction that the medium is transported in a printing area where the recording head ejects the liquid and that, by the movement of the moving part, detects the residual amount of the liquid between the detector and each of the target detection units of the plurality of the liquid cartridges, when the carriage has stopped, wherein the moving part is located in a home position that is an end portion of the recording device in the movement direction of the carriage, the moving part being separate from any moving part that moves the carriage. ### Claim 2 (depends on 1) The recording device according to claim 1 further comprising: a feeding roller that feeds the medium in a direction that intersects the movement direction of the carriage and a motion converter that moves the moving part by converting rotation of the feeding roller into linear movement in a direction that intersects the movement direction of the carriage. ### Claim 3 (depends on 2) The recording device according to claim 2, wherein the feeding roller includes a first feeding roller that is provided upstream of the recording head in a medium transport direction and a second feeding roller that is provided downstream of the recording head in the medium transport direction, and the motion converter includes a first pulley that is provided on a rotation shaft of the first feeding roller, a second pulley that is provided on a rotation shaft of the second feeding roller, and a belt that loops around the first pulley and the second pulley and that engages with the moving part. ### Claim 4 (depends on 2) The recording device according to claim 2, wherein the motion converter includes a rotation body that receives rotational motive power from the feeding roller and a linear motion member that includes a boss that is loosely inserted in a groove formed in the rotation body, the linear motion member moving in a direction which intersects the movement direction of the carriage as a result of the boss being pushed in the direction which intersects the movement direction of the carriage by the rotation of the rotation body, and the linear motion member engaging with the moving part. ### Claim 5 (depends on 1) The recording device according to claim 1 further comprising: a wiping unit that includes a wiper that wipes the recording head while moving in a direction that intersects the movement direction of the carriage, wherein the moving part is provided in the wiping unit. ### Claim 6 (depends on 1) The recording device according to claim 1, wherein a cam surface, which is formed so as to be a surface inclined with respect to the movement direction of the carriage, may be provided on the carriage, the moving part is capable of engaging with the cam surface and is provided in a cam follower that is capable of moving in a direction that intersects the movement direction of the carriage, and the cam follower unit moves in a direction that intersects the movement direction of the carriage as a result of the cam follower unit being pushed by the cam surface that moves with the movement of the carriage. ### Claim 7 (depends on 1) The recording device according to claim 1, wherein the moving part is provided so as to be capable of swinging about a fulcrum and the moving part moves by the swinging of the arm. ### Claim 8 (depends on 1) The recording device according to claim 1, wherein the detector that, by the movement of the moving part, detects the residual amount of the liquid between the detector and each of the target detection units of the plurality of the liquid cartridges, when the carriage is located in a home position that is an end portion of the recording device in the movement direction of the carriage.