# US 10,308,043 B2 · Ink jet recording apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,043 B2 - Document ID: US10308043B2 - Status: Granted - Kind: B2 - Application number: 15/889,568 - Filed: 2018-02-06 - Published: 2018-06-28 - Granted: 2019-06-04 - Earliest claimed: 2016-02-15 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Eisuke Nishitani; Takao Ogata; Akira Morita; Takumi Otani; Toshimori Miyakoshi - Web page: https://patentgrep.com/patent/US10308043B2 ## CPC - B41J 11/002: {Curing or drying the ink on the copy materials, e.g. by heating or irradiating} - B41J 2/0057: {where an intermediate transfer member receives the ink before transferring it on the printing material} - B41J 2/01: Ink jet - 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 11/00216: {using infrared [IR] radiation or microwaves} - B41J 11/0022: {using convection means, e.g. by using a fan for blowing or sucking air} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract Provided is a highly reliable ink jet recording apparatus capable of preventing the occurrence of image defects. The ink jet recording apparatus includes a liquid absorbing device including a porous body configured to absorb/remove an aqueous liquid component from an image containing the aqueous liquid component and a coloring material, a heat drying device configured to perform a heat drying treatment of the image after being subjected to the liquid absorption treatment, a temperature measuring device configured to measure the temperature of the image after being subjected to the heat drying treatment with the heat drying device, and a determination unit configured to determine the state of the liquid absorbing device from the measured temperature. ## Claims ### Claim 1 An ink jet recording apparatus comprising: an image forming unit configured to form an ink image by an aqueous liquid component and a coloring material on an ink receiving medium; a liquid absorbing device configured to come into contact with the ink image and absorb the aqueous liquid component from the ink image; a first temperature measuring unit configured to measure a first temperature of the ink image after the aqueous liquid component is absorbed by the liquid absorbing device; and a determination unit configured to determine a working state of the ink jet recording apparatus based on the first temperature. ### Claim 2 (depends on 1) The ink jet recording apparatus according to claim 1, further comprising a heat device configured to perform a heat treatment of the ink image after the aqueous liquid component is absorbed by the liquid absorbing device. ### Claim 3 (depends on 2) The ink jet recording apparatus according to claim 2, wherein the first temperature measuring unit measures the first temperature of the ink image after the heat treatment is performed by the heat device. ### Claim 4 (depends on 2) The ink jet recording apparatus according to claim 2, further comprising a second temperature measuring unit configured to measure a second temperature of the ink image before the heat treatment is performed by the heat device, wherein the determination unit determines a working state of the liquid absorbing device based on a difference between the first temperature and the second temperature. ### Claim 5 (depends on 4) The ink jet recording apparatus according to claim 4, wherein the determination unit determines that the liquid absorbing device fails to work properly when the difference between the first temperature and the second temperature is below a predetermined threshold temperature. ### Claim 6 (depends on 5) The ink jet recording apparatus according to claim 5, further comprising a control unit configured to direct the image forming unit to be subjected to maintenance or to direct the ink jet recording apparatus to check an ink forming state of the ink receiving medium in a case where the determination unit determines that the liquid absorbing device fails to work properly. ### Claim 7 (depends on 5) The ink jet recording apparatus according to claim 5, further comprising a control unit configured to direct the liquid absorbing device to be subjected to maintenance or to change a running condition of the liquid absorbing device in a case where the determination unit determines that the liquid absorbing device fails to work properly. ### Claim 8 (depends on 7) The ink jet recording apparatus according to claim 7, wherein the change in the running condition of the liquid absorbing device includes a change in a pressure of the liquid absorbing device against the ink image. ### Claim 9 (depends on 4) The ink jet recording apparatus according to claim 4, wherein the second temperature measuring unit includes a noncontact type temperature measuring member. ### Claim 10 (depends on 2) The ink jet recording apparatus according to claim 2, further comprising a second temperature measuring unit configured to measure a second temperature of a non-image formation area of a region on the ink receiving medium after the heat treatment is performed, wherein the determination unit determines whether the heat device works properly based on the second temperature. ### Claim 11 (depends on 10) The ink jet recording apparatus according to claim 10, wherein the determination unit determines that the heat device fails to work properly when the second temperature is outside a predetermined threshold temperature range. ### Claim 12 (depends on 10) The ink jet recording apparatus according to claim 10, further comprising a third temperature measuring unit configured to measure a third temperature of the non-image formation area of a region on the ink receiving medium before the heat treatment is performed, wherein the determination unit determines whether the heat device works properly based on a difference between the second temperature and the third temperature. ### Claim 13 (depends on 12) The ink jet recording apparatus according to claim 12, wherein the determination unit determines that the heat device fails to work properly when the difference between the second temperature and the third temperature is outside a predetermined threshold temperature range. ### Claim 14 (depends on 13) The ink jet recording apparatus according to claim 13, further comprising a control unit configured to direct the heat device to be subjected to maintenance or to change a running condition of the heat device in a case where the determination unit determines that the heat device fails to work properly. ### Claim 15 (depends on 1) The ink jet recording apparatus according to claim 1, wherein the determination unit determines a working state of the liquid absorbing device based on the first temperature. ### Claim 16 (depends on 15) The ink jet recording apparatus according to claim 15, wherein the determination unit determines that the liquid absorbing member fails to work properly when the first temperature is below a predetermined threshold temperature. ### Claim 17 (depends on 1) The ink jet recording apparatus according to claim 1, wherein the first temperature measuring unit includes a noncontact type temperature measuring member. ### Claim 18 (depends on 1) The ink jet recording apparatus according to claim 1, wherein the image forming unit includes a liquid applying unit configured to apply a liquid to the ink receiving medium, the liquid improving a fixability of the ink on the ink receiving medium. ### Claim 19 (depends on 1) The ink jet recording apparatus according to claim 1, wherein the ink receiving medium is a transfer member configured to temporarily hold the ink image and transfer the ink image to a recording medium. ### Claim 20 An ink jet recording apparatus comprising: an image forming unit configured to form an ink image by an aqueous liquid component and a coloring material on an ink receiving medium; a liquid absorbing device configured to come into contact with the ink image and concentrate the ink image by absorbing the aqueous liquid component from the ink image; a temperature measuring unit configured to measure a temperature of the ink image after the aqueous liquid component is absorbed by the liquid absorbing device; and a determination unit configured to determine a working state of the ink jet recording apparatus based on the temperature.