# US 2018/0321732 A1 · Image forming apparatus, method of controlling image forming apparatus, and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0321732 A1 - Document ID: US20180321732A1 - Status: Published application - Kind: A1 - Application number: 15/966,442 - Filed: 2018-04-30 - Published: 2018-11-08 - Earliest claimed: 2017-05-08 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Kenji Fukushi - Web page: https://patentgrep.com/patent/US20180321732A1 ## CPC - G06F 1/3231: Monitoring the presence, absence or movement of users - G06F 1/3284: {Power saving in printer} - G06F 3/1204: {resulting in reduced user or operator actions, e.g. presetting, automatic actions, using hardware token storing data} - G06F 3/1221: {with regard to power consumption} - G06F 3/1229: {Printer resources management or printer maintenance, e.g. device status, power levels} - G06F 3/1279: {Controller construction, e.g. aspects of the interface hardware} - G06K 15/406: {Wake-up procedures (start-up of a laser scanner G06K15/1219)} - G06V 40/10: Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An image forming apparatus of the present invention includes a human detection unit configured to detect a human, an operation unit including a display device configured to display an operation screen, a touch panel configured to detect a touch operation of the operation screen, a control unit configured to return the operation unit from a first power state in which the display device does not display the operation screen to a second power state in which the display device displays the operation screen based on a detection result of the human detection unit, and an invalidation unit configured to invalidate a touch operation of the operation screen for a predetermined period after the returning starts. ## Claims ### Claim 1 An image forming apparatus comprising: a human detection unit configured to detect a human; an operation unit including a display device configured to display an operation screen; a touch panel configured to detect a touch operation of the operation screen; a control unit configured to return the operation unit from a first power state in which the display device does not display the operation screen to a second power state in which the display device displays the operation screen based on a detection result of the human detection unit; and an invalidation unit configured to invalidate a touch operation of the operation screen for a predetermined period after the returning starts. ### Claim 2 (depends on 1) The image forming apparatus according to claim 1, wherein the predetermined period includes a period after the display device starts to display the operation screen. ### Claim 3 (depends on 1) The image forming apparatus according to claim 1, further comprising a time-counting unit configured to count time for the predetermined period, wherein, in a case where a touch operation of the operation screen is detected before the counting is terminated, the time-counting unit restarts the counting from the beginning, and the predetermined period continues until the counting is terminated. ### Claim 4 (depends on 1) The image forming apparatus according to claim 1, wherein the invalidation unit includes an operation control unit configured to control at least the touch panel and a main body control unit configured to control at least the display device, and wherein the operation control unit does not output a signal to be output to the main body control unit in response to a touch operation of the operation screen detected by the touch panel for a predetermined period after the returning starts. ### Claim 5 (depends on 4) The image forming apparatus according to claim 4, wherein the signal is a coordinate data signal indicating a position where a touch operation of the operation screen occurs. ### Claim 6 (depends on 1) The image forming apparatus according to claim 1, wherein the invalidation unit includes an operation control unit configured to control at least the touch panel and a main body control unit configured to control at least the display device, and wherein the main body control unit does not execute a process based on a signal input from the operation control unit in response to a touch operation of the operation screen detected by the touch panel for a predetermined period after the returning starts. ### Claim 7 (depends on 6) The image forming apparatus according to claim 6, wherein the signal is a coordinate data signal indicating a position where a touch operation of the operation screen occurs. ### Claim 8 (depends on 7) The image forming apparatus according to claim 7, wherein the process based on the signal includes at least one of a process of advancing the image forming apparatus from the second power state to the first power state, a process of shutting down the image forming apparatus, and a process of canceling image formation in the image forming apparatus. ### Claim 9 (depends on 7) The image forming apparatus according to claim 7, wherein the process based on the signal includes a process of generating an image data signal for displaying an operation screen after transition corresponding to a position where a touch operation of the operation screen occurs. ### Claim 10 A method of controlling an image forming apparatus comprising: detecting a human by a human detection unit; displaying an operation screen on a display device by an operation unit; detecting a touch operation of the operation screen by a touch panel; returning the operation unit from a first power state in which the display device does not display the operation screen to a second power state in which the display device displays the operation screen based on a detection result of the human detection unit; and invalidating a touch operation of the operation screen for a predetermined period after the returning starts. ### Claim 11 A non-transitory computer readable storage medium storing a program for causing a computer to function as an image forming apparatus comprising: a human detection unit configured to detect a human; an operation unit including a display device configured to display an operation screen; a touch panel configured to detect a touch operation of the operation screen; a control unit configured to return the operation unit from a first power state in which the display device does not display the operation screen to a second power state in which the display device displays the operation screen based on a detection result of the human detection unit, an invalidation unit configured to invalidate a touch operation of the operation screen for a predetermined period after the returning starts.