# US 12,113,939 B2 · Information processing apparatus that detects measurement sheets for verifying color accuracy, control method thereof, 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 12,113,939 B2 - Document ID: US12113939B2 - Status: Granted - Kind: B2 - Application number: 18/297,902 - Filed: 2023-04-10 - Published: 2023-11-02 - Granted: 2024-10-08 - Earliest claimed: 2022-04-27 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Hidekazu Nakashio; Yukihiro Shindo - Web page: https://patentgrep.com/patent/US12113939B2 ## CPC - H04N 1/00034: {Measuring, i.e. determining a quantity by comparison with a standard (H04N1/00031 takes precedence)} - H04N 1/00023: {Colour systems} - H04N 1/00074: {Indicating or reporting (details of user-machine interface H04N1/0035)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The present invention is directed to an information processing apparatus, the method comprising: detecting whether a sheet is set in a measurement device in accordance with a detection condition; in a case where a sheet is detected as being set, measuring a patch formed on the sheet, using the measurement device; and setting a first detection condition for detecting that a sheet is set in the measurement device and a second detection condition for detecting that a sheet is not set in the measurement device to mutually-different conditions. ## Claims ### Claim 1 An information processing apparatus comprising: a memory that stores instructions; and a processor that executes the stored instructions to function as: a detection unit that detects that a sheet to be fed is placed in a measurement device or a fed sheet is discharged from the measurement device; a measurement unit that, in a case where a sheet is detected as being placed, measures a chromaticity value of a patch formed on the sheet, using the measurement device; and a control unit that sets, to the measurement device, a first detection condition for detecting, in a first cycle, that a sheet to be fed is placed in the measurement device and a second detection condition for detecting, in a second cycle, that a fed sheet is discharged from the measurement device to mutually different detection intervals, wherein the first cycle is longer than the second cycle, and wherein in a case where the first condition set by the control unit is satisfied, the detection unit determines that the sheet to be fed is placed in the measurement device, and in a case where the second condition set by the control unit is satisfied, the detection unit determines that the fed sheet is discharged from the measurement device. ### Claim 2 (depends on 1) The information processing apparatus according to claim 1, wherein the control unit provides a standby time after the detection unit detects that a sheet to be fed is placed in the measurement device according to the first detection condition. ### Claim 3 (depends on 1) The information processing apparatus according to claim 1, wherein the control unit sets the first cycle of the first detection condition to at least two and at most ten seconds, and sets the second cycle of the second detection condition to less than two seconds. ### Claim 4 (depends on 1) The information processing apparatus according to claim 1, wherein the first detection condition and the second detection condition are a number of times a sheet placed in the measurement device is detected, the control unit sets the first detection condition to a number of times greater than the second detection condition, and in a case where the condition set by the control unit is satisfied, the detection unit determines that a sheet to be fed is placed in the measurement device. ### Claim 5 (depends on 4) The information processing apparatus according to claim 4, wherein the control unit sets the number of times of the first detection condition to no less than three and no more than ten, and sets the number of times of the second detection condition to no less than one and no more than two. ### Claim 6 (depends on 1) The information processing apparatus according to claim 1, wherein in a case where the first detection condition is satisfied, the measurement device starts pulling the sheet placed in the measurement device into the measurement device. ### Claim 7 (depends on 1) The information processing apparatus according to claim 1, wherein the processor further executes the stored instructions to function as a setting unit that sets whether the detection unit is to detect that a sheet to be fed is placed in the measurement device in accordance with a start instruction from a user, or whether the detection unit is to detect that a sheet to be fed is placed in the measurement device automatically. ### Claim 8 (depends on 1) The information processing apparatus according to claim 1, wherein the control unit communicates whether a sheet to be fed is placed in the measurement device by lighting an LED provided in the measurement device. ### Claim 9 (depends on 1) The information processing apparatus according to claim 1, wherein the processor further executes the stored instructions to function as a unit that, using a measurement result from the measurement unit, executes color verification of a printing device that has formed the patch on the sheet. ### Claim 10 (depends on 1) The information processing apparatus according to claim 1, wherein the information processing apparatus is a control device connected, over a network, to a color verification device that performs color verification, and the control unit transmits a measurement result by the measurement unit to the color verification device, and causes the color verification device to perform color verification of a printing device that has formed the patch on the sheet. ### Claim 11 A control method for an information processing apparatus, the method comprising: detecting that a sheet to be fed is placed in a measurement device or a fed sheet is discharged from the measurement device; in a case where a sheet is detected as being placed, measuring a chromaticity value of a patch formed on the sheet, using the measurement device; and setting, to the measurement device, a first detection condition for detecting, in a first cycle, that a sheet to be fed is placed in the measurement device and a second detection condition for detecting, in a second cycle, that a fed sheet is discharged from the measurement device to mutually different detection intervals, wherein the first cycle is longer than the second cycle, and wherein in a case where the first condition set by the control unit is satisfied, the detection unit determines that the sheet to be fed is placed in the measurement device, and in a case where the second condition set by the control unit is satisfied, the detection unit determines that the fed sheet is discharged from the measurement device. ### Claim 12 A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute each step of a control method for an information processing apparatus, the method comprising: detecting that a sheet to be fed is placed in a measurement device or a fed sheet is discharged from the measurement device; in a case where a sheet is detected as being placed, measuring a chromaticity value of a patch formed on the sheet, using the measurement device; and setting, to the measurement device, a first detection condition for detecting, in a first cycle, that a sheet to be fed is placed in the measurement device and a second detection condition for detecting, in a second cycle, that a fed sheet is discharged from the measurement device to mutually different detection intervals, wherein the first cycle is longer than the second cycle, and wherein in a case where the first condition set by the control unit is satisfied, the detection unit determines that the sheet to be fed is placed in the measurement device, and in a case where the second condition set by the control unit is satisfied, the detection unit determines that the fed sheet is discharged from the measurement device.