# US 8,783,825 B2 · Printing apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,825 B2 - Document ID: US8783825B2 - Status: Granted - Kind: B2 - Application number: 13/830,206 - Filed: 2013-03-14 - Published: 2013-10-03 - Granted: 2014-07-22 - Earliest claimed: 2012-03-28 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Asako Tomida; Masaya Uetsuki; Kazuo Suzuki; Toshimitsu Danzuka; Masataka Kato; Tsuyoshi Ibe; Hiroaki Komatsu - Web page: https://patentgrep.com/patent/US8783825B2 ## CPC - B41J 2/16535: {using wiping constructions (B41J2/16552 takes precedence)} - B41J 2002/1655: {with wiping surface parallel with nozzle plate and mounted on reels, e.g. cleaning ribbon cassettes} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A printing apparatus includes a print head, a scanning unit, a sheet-form member, a winding device, and a determining unit. The print head includes an orifice face having an ejection orifice to eject a liquid. The scanning unit performs scanning while reciprocating the print head. The sheet-form member performs a wiping operation of the orifice face of the print head, wherein the wiping operation includes a first wiping operation and a second wiping operation. The winding device performs a winding operation of the sheet-form member. The determining unit determines a length of the sheet-form member that is to be wound by the winding device in accordance with a length of time between the first wiping operation performed by the sheet-form member and the second wiping operation performed by the sheet-form member that follows the first wiping operation. ## Claims ### Claim 1 A printing apparatus comprising: a print head having an orifice face, wherein the orifice face includes an ejection orifice configured to eject a liquid; a scanning unit configured to perform scanning while reciprocating the print head; a sheet-form member configured to perform a wiping operation of the orifice face of the print head, wherein the wiping operation includes a first wiping operation and a second wiping operation; a winding device configured to perform a winding operation of the sheet-form member; and a determining unit configured to determine a length of the sheet-form member that is to be wound by the winding device in accordance with a length of time between the first wiping operation performed by the sheet-form member and the second wiping operation performed by the sheet-form member that follows the first wiping operation. ### Claim 2 (depends on 1) The printing apparatus according to claim 1, wherein the determining unit determines the length of the sheet-form member that is to be wound such that the length of the sheet-form member that is to be wound increases as the length of time between the first wiping operation and the second wiping operation increases. ### Claim 3 (depends on 1) The printing apparatus according to claim 1, wherein the wiping operation of the orifice face of the print head is performed by the sheet-form member as a result of the scanning unit performing scanning over the sheet-form member. ### Claim 4 (depends on 1) The printing apparatus according to claim 1, wherein the sheet-form member is impregnated with a liquid. ### Claim 5 (depends on 1) The printing apparatus according to claim 1, further comprising: a pressing member configured to raise a portion of the sheet-form member while the wiping operation is performed to bring the sheet-form member into contact with the orifice face. ### Claim 6 (depends on 1) The printing apparatus according to claim 1, wherein the sheet-form member is positioned in an end portion of an area over which the scanning unit performs scanning. ### Claim 7 (depends on 1) The printing apparatus according to claim 1, wherein the winding device performs the winding operation immediately before the second wiping operation, and wherein the determining unit determines the length of the sheet-form member that is to be wound based on a length of time between the first wiping operation and the winding operation. ### Claim 8 (depends on 1) The printing apparatus according to claim 1, wherein the winding operation performed by the winding device is performed in two steps including a first winding operation and a second winding operation, wherein the first winding operation is performed a predetermined time after the first wiping operation, wherein the second winding operation is performed immediately before the second wiping operation, and wherein the determining unit determines the length of the sheet-form member that is to be wound based on a length of time between the first winding operation and the second winding operation. ### Claim 9 (depends on 1) The printing apparatus according to claim 1, wherein the determining unit determines the length of the sheet-form member that is to be wound based on a speed at which the scanning unit travels and a distance over which the scanning unit travels during one reciprocal movement. ### Claim 10 A method for a printing apparatus, wherein the printing apparatus includes a print head having an orifice face and a sheet-form member configured to perform a wiping operation of the orifice face, wherein the orifice face includes an ejection orifice configured to eject a liquid, the method comprising: performing scanning while reciprocating the print head; performing a wiping operation of the orifice face of the print head, wherein the wiping operation includes a first wiping operation and a second wiping operation; performing a winding operation of the sheet-form member; and determining a length of the sheet-form member that is to be wound by the winding device in accordance with a length of time between the first wiping operation performed by the sheet-form member and the second wiping operation performed by the sheet-form member that follows the first wiping operation.