# US 10,455,103 B2 · Power control method of printing apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,103 B2 - Document ID: US10455103B2 - Status: Granted - Kind: B2 - Application number: 15/458,563 - Filed: 2017-03-14 - Published: 2017-10-05 - Granted: 2019-10-22 - Earliest claimed: 2016-03-29 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Atsushi Hikichi - Web page: https://patentgrep.com/patent/US10455103B2 ## CPC - H04N 1/00891: {Switching on or off, e.g. for saving power when not in use (H04N1/00896 takes precedence)} - G03G 15/5004: {Power supply control, e.g. power-saving mode, automatic power turn-off} - G03G 15/80: {Details relating to power supplies, circuits boards, electrical connections} - H04N 1/00901: {Using different supplies or connection to an external supply (H04N1/00893, H04N1/00896 take precedence)} - H04N 1/00904: {Arrangements for supplying power to different circuits or for supplying power at different levels (H04N1/00896 takes precedence)} - G03G 15/5083: {for scheduling} - G03G 2215/00109: Remote control of apparatus, e.g. by a host - H04N 2201/0094: Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A printing apparatus includes a printer to form an image on a printing medium by using a color material and to output the printing medium on which the image is formed, a printing controller to control the printer and to store data relating to the printer, a power controller to control supply of power to the printer and the printing controller, and a main controller connected with the printing controller so as to be capable of communication. In accordance with a predetermined request, the power controller performs control so as to suspend supply of power to the printer, the main controller starts acquisition of the data stored by the printing controller, and the power controller performs control so as to suspend supply of power to the printing controller after the main controller completes acquisition of the data. ## Claims ### Claim 1 A printing apparatus comprising: a printing mechanism configured to form an image on a printing medium; a printing controller configured to control the printing mechanism and to store data relating to the printing mechanism; a power controller configured to supply power to the printing mechanism and the printing controller, and stop supplying power to the printing mechanism and the printing controller; and a main controller connected with the printing controller so as to be capable of communication, wherein the main controller transmits each of a data acquisition request and an end request to the printing controller in accordance with a predetermined condition, the power controller stops supplying power to the printing mechanism in accordance with a predetermined response for the data acquisition request, the main controller acquires the data relating to the printing mechanism stored by the printing controller in accordance with the predetermined response for the data acquisition request, and the power controller stops supplying power to the printing controller after a completion of acquisition of the data relating to the printing mechanism stored by the printing controller. ### Claim 2 (depends on 1) The printing apparatus according to claim 1, further comprising: a power supplier configured to supply first power to the printing controller and second power higher than the first power to the printing mechanism. ### Claim 3 (depends on 1) The printing apparatus according to claim 1, wherein the data includes at least one of a consumption state of a material for forming an image on the printing medium, a number of the printing media, and an energization time of the printing apparatus. ### Claim 4 (depends on 1) The printing apparatus according to claim 1, wherein the printing mechanism is a fixing unit or a fan. ### Claim 5 (depends on 1) The printing apparatus according to claim 1, wherein the main controller gives instructions to perform processing to reset a drive system relating to printing processing to the printing mechanism, and the power controller performs control so as to suspend supply of power to the printing controller after the reset processing is completed. ### Claim 6 A control method of a printing apparatus including: a printing mechanism configured to form an image on a printing medium; a printing controller configured to control the printing mechanism and to store data relating to the printing mechanism; a power controller configured to supply power to the printing mechanism and the printing controller, and to stop the supply of power to the printing mechanism and the printing controller; and a main controller connected with the printing controller so as to be capable of communication, the control method comprising: a step of, by the main controller, transmitting each of a data acquisition request and an end request to the printing controller in accordance with a predetermined condition; a step of, by the power controller, stopping the supply of power to the printing mechanism in accordance with a predetermined response for the data acquisition request; a step of, by the main controller, acquiring the data relating to the printing mechanism stored by the printing controller in accordance with the predetermined response for the data acquisition request; and a step of, by the power controller, stopping the supply of power to the printing controller after a completion of acquisition of the data relating to the printing mechanism stored by the printing controller. ### Claim 7 (depends on 1) The printing apparatus according to claim 1, wherein the predetermined condition is a shutdown condition for shutting down the printing apparatus. ### Claim 8 (depends on 1) The printing apparatus according to claim 1, wherein the printing mechanism is a fixing unit, and the printing controller separates the fixing unit in accordance with the predetermined response. ### Claim 9 (depends on 1) The printing apparatus according to claim 1, wherein the printing mechanism is a lifter of a finisher, and the printing controller moves the lifter in accordance with the predetermined response. ### Claim 10 (depends on 1) The printing apparatus according to claim 1, wherein the printing mechanism is a motor, and the printing controller drives the motor in accordance with the predetermined response. ### Claim 11 A printing apparatus comprising: a printing mechanism configured to form an image on a printing medium; a printing controller configured to control the printing mechanism and to store data relating to the printing mechanism; a power controller configured to supply power to the printing mechanism and the printing controller, and to stop supplying power to the printing mechanism and the printing controller; and a main controller connected with the printing controller so as to be capable of communication, wherein the main controller acquires the data relating to the printing mechanism stored by the printing controller in accordance with a predetermined condition, and the power controller stops supplying power to the printing mechanism without waiting for a completion of acquisition of the data relating to the printing mechanism stored by the printing controller. ### Claim 12 (depends on 11) The printing apparatus according to claim 11, further comprising: a power supplier configured to supply first power to the printing controller and second power higher than the first power to the printing mechanism. ### Claim 13 (depends on 11) The printing apparatus according to claim 11, wherein the data includes at least one of a consumption state of a material for forming an image on the printing medium, a number of the printing media, and an energization time of the printing apparatus. ### Claim 14 (depends on 11) The printing apparatus according to claim 11, wherein the printing mechanism is a fixing unit or a fan. ### Claim 15 (depends on 11) The printing apparatus according to claim 11, wherein the main controller gives instructions to perform processing to reset a drive system relating to printing processing to the printing mechanism, and the power controller performs control so as to suspend supply of power to the printing controller after the reset processing is completed. ### Claim 16 (depends on 11) The printing apparatus according to claim 11, wherein the power controller stops supplying power to the printing controller after a completion of acquisition of the data relating to the printing mechanism stored by the printing controller. ### Claim 17 (depends on 11) The printing apparatus according to claim 11, wherein the predetermined condition is a shutdown condition for shutting down the printing apparatus. ### Claim 18 (depends on 11) The printing apparatus according to claim 11, wherein the printing mechanism is a fixing unit, and the printing controller separates the fixing unit in accordance with the predetermined response. ### Claim 19 (depends on 11) The printing apparatus according to claim 11, wherein the printing mechanism is a lifter of a finisher, and the printing controller moves the lifter in accordance with the predetermined response. ### Claim 20 (depends on 11) The printing apparatus according to claim 11, wherein the printing mechanism is a motor, and the printing controller drives the motor in accordance with the predetermined response. ### Claim 21 A printing apparatus comprising: a printing mechanism configured to form an image on a printing medium; a printing controller configured to control the printing mechanism and to store data relating to the printing mechanism; a power controller configured to supply power to the printing mechanism and the printing controller, and stop supplying power to the printing mechanism and the printing controller; and a main controller connected with the printing controller so as to be capable of communication, wherein the main controller transmits a data acquisition request in accordance with a predetermined condition and acquires the data relating to the printing mechanism stored by the printing controller in accordance with a predetermined response for the data acquisition request, the main controller transmits an end request to the printing controller without waiting for a completion of acquisition of the data relating to the printing mechanism stored by the printing controller, and the power controller stops supplying power to the printing mechanism in accordance with a predetermined response for the end request. ### Claim 22 (depends on 21) The printing apparatus according to claim 21, further comprising: a power supplier configured to supply first power to the printing controller and second power higher than the first power to the printing mechanism. ### Claim 23 (depends on 21) The printing apparatus according to claim 21, wherein the data includes at least one of a consumption state of a material for forming an image on the printing medium, a number of the printing media, and an energization time of the printing apparatus. ### Claim 24 (depends on 21) The printing apparatus according to claim 21, wherein the printing mechanism is a fixing unit or a fan. ### Claim 25 (depends on 21) The printing apparatus according to claim 21, wherein the main controller gives instructions to perform processing to reset a drive system relating to printing processing to the printing mechanism, and the power controller performs control so as to suspend supply of power to the printing controller after the reset processing is completed. ### Claim 26 (depends on 21) The printing apparatus according to claim 21, wherein the power controller stops to supply power to the printing controller after a completion of acquisition of the data relating to the printing mechanism stored by the printing controller. ### Claim 27 (depends on 21) The printing apparatus according to claim 21, wherein the predetermined condition is a shutdown condition for shutting down the printing apparatus. ### Claim 28 (depends on 21) The printing apparatus according to claim 21, wherein the printing mechanism is a fixing unit, and the printing controller separates the fixing unit in accordance with the predetermined response. ### Claim 29 (depends on 21) The printing apparatus according to claim 21, wherein the printing mechanism is a lifter of a finisher, and the printing controller moves the lifter in accordance with the predetermined response. ### Claim 30 (depends on 21) The printing apparatus according to claim 21, wherein the printing mechanism is a motor, and the printing controller drives the motor in accordance with the predetermined response.