# US 10,118,383 B2 · Recording apparatus and recording method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,383 B2 - Document ID: US10118383B2 - Status: Granted - Kind: B2 - Application number: 15/601,879 - Filed: 2017-05-22 - Published: 2017-11-23 - Granted: 2018-11-06 - Earliest claimed: 2016-05-23 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Osamu Murayama; Takehito Washizawa; Yoshiyuki Konishi - Web page: https://patentgrep.com/patent/US10118383B2 ## CPC - B41J 11/0015: {for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing (selective coating B41J2/2114)} - B41J 2/04541: {Specific driving circuit} - B41J 2/08: charge-control type - B41J 2/145: Arrangement thereof - B41J 2/47: using the combination of scanning and modulation of light - B41J 11/42: Controlling {printing material conveyance for accurate alignment of the printing material with the printhead; Print registering} - B41J 29/38: Drives, motors, controls or automatic cut-off devices for the entire printing mechanism - B41J 11/0024: {using conduction means, e.g. by using a heated platen} - B41J 11/00244: {Means for heating the copy materials before or during printing} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A recording apparatus is provided with a droplet discharging head having a nozzle forming portion and a charging unit. The nozzle forming portion includes nozzles formed therein. The charging unit is configured to impart an electrical charge to the medium. The charging unit imparts, to the medium, an electrical charge having the same polarity as an electrically charged state of the nozzle forming portion after the droplets are discharged. ## Claims ### Claim 1 A recording apparatus comprising: a droplet discharging head configured to discharges droplets onto a medium from a nozzle forming portion including nozzles, the nozzles being formed in the nozzle forming portion, the droplets having a first polarity and the nozzle forming portion having a second polarity that is opposite of the first polarity; and a charging unit configured to provide an electrical charge to the medium, the provided electrical charge being generated by the charging unit, wherein the charging unit provides, to the medium, a specific amount of an electrical charge having the second polarity, wherein the specific amount of the electrical charge provided by the charging unit to the medium is determined by one of: for each specific time that the droplets are discharged, a discharge rate of the droplets discharged onto the medium during the specific time, or a maximum discharge rate of the droplets discharged onto the medium. ### Claim 2 (depends on 1) The recording apparatus according to claim 1, wherein the charging unit provides, to the medium before the droplets are discharged, the electrical charge having the second polarity, such that, in the medium after the droplets are discharged, an electrical charge of the first polarity which is opposite to the second polarity is not greater than the specific amount. ### Claim 3 (depends on 2) The recording apparatus according to claim 2, further comprising: a carriage unit that is configured to cause the charging unit to move, wherein the charging unit is capable of providing the electrical charge while being caused to move by the carriage unit. ### Claim 4 (depends on 2) The recording apparatus according to claim 2, further comprising: a transport unit configured to transport the medium in a transport direction, wherein the charging unit is disposed further to an upstream side in the transport direction than the droplet discharging head. ### Claim 5 (depends on 4) The recording apparatus according to claim 4, further comprising: a carriage unit that is configured to cause the charging unit to move, wherein the charging unit is capable of providing the electrical charge while being caused to move by the carriage unit. ### Claim 6 (depends on 1) The recording apparatus according to claim 1, further comprising: a transport unit configured to transport the medium in a transport direction, wherein the charging unit is disposed further to an upstream side in the transport direction than the droplet discharging head. ### Claim 7 (depends on 6) The recording apparatus according to claim 6, further comprising: a carriage unit that is configured to cause the charging unit to move, wherein the charging unit is capable of providing the electrical charge while being caused to move by the carriage unit. ### Claim 8 (depends on 1) The recording apparatus according to claim 1, further comprising: a carriage unit that is configured to cause the charging unit to move, wherein the charging unit is capable of providing the electrical charge while being caused to move by the carriage unit. ### Claim 9 A recording method comprising: droplet discharging onto a medium from a nozzle forming portion including nozzles, the nozzles being formed in the nozzle forming portion, the droplets having a first polarity and the nozzle forming portion having a second polarity that is opposite of the first polarity; and electrical charge providing an electrically charge to the medium, the electrical charge providing, to the medium, a specific amount of an electrical charge having the second polarity, wherein the specific amount of the electrical charge provided to the medium is determined by one of: for each specific time that the droplets are discharged, a discharge rate of the droplets discharged onto the medium during the specific time, or a maximum discharge rate of the droplets discharged onto the medium.