# US 11,907,797 B2 · Printer, printer control method of printer and non-transitory computer-readable medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,907,797 B2 - Document ID: US11907797B2 - Status: Granted - Kind: B2 - Application number: 17/425,843 - Filed: 2020-02-03 - Published: 2022-06-09 - Granted: 2024-02-20 - Earliest claimed: 2019-03-29 - Assignees: Sato Holdings Kabushiki Kaisha - Applicants: Sato Holdings Kabushiki Kaisha - Inventors: Hidekazu Arai - Web page: https://patentgrep.com/patent/US11907797B2 ## CPC - G06K 7/10366: {the interrogation device being adapted for miscellaneous applications} - G06K 17/0025: {the arrangement consisting of a wireless interrogation device in combination with a device for optically marking the record carrier} - B41J 2/325: by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet - B41J 3/01: for special character, e.g. for Chinese characters or barcodes - B41J 3/4075: {Tape printers; Label printers} - B41J 3/46: Printing mechanisms combined with apparatus providing a visual indication - B41J 3/50: Mechanisms producing characters by printing and also producing a record by other means {, e.g. printer combined with RFID writer} - B41J 29/38: Drives, motors, controls or automatic cut-off devices for the entire printing mechanism - G06K 15/022: {for printing on continuous media, e.g. tapes} - G06K 15/024: {for printing on segmented surfaces, e.g. sticker sheets, label rolls} - B41J 11/46: by marks or formations on the paper being fed - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A printer that prints each printing medium having an RFID, the printer including: a radio wave strength acquisition unit that acquires radio wave strength from the RFID; and a determine unit that determines whether the RFID is normal or not on the basis of a radio wave strength obtained by the radio wave strength acquisition unit and a threshold. ## Claims ### Claim 1 A printer configured to print on a printing medium having an RFID, the printer comprising: a controller configured to: obtain a radio wave strength threshold associated with the RFID, determine a radio wave strength of a signal received from the RFID, and determine whether or not the RFID is normal based on a comparison between the determined radio wave strength of the signal received from the RFID and the radio wave strength threshold. ### Claim 2 (depends on 1) The printer according to claim 1, wherein: the controller is configured to set the threshold on the basis of an average value or a lower limit value of radio wave strengths from a plurality of the RFID obtained by the controller. ### Claim 3 (depends on 1) The printer according to claim 1, wherein: the controller is configured to cause display of, on a display unit for each of the RFID, the radio wave strength obtained by the controller. ### Claim 4 (depends on 1) The printer according to claim 1, wherein: the printer is mounted with a continuous body on which a plurality of the printing media are temporarily attached; and the controller is configured to acquire radio wave strengths from the RFID of each of the plurality of the printing media that are temporarily attached to the continuous body. ### Claim 5 (depends on 4) The printer according to claim 4, wherein: the controller is configured to: record the radio wave strength from the RFID of each of a plurality of the printing media temporarily attached to the continuous body and a position of the RFID on the continuous body, acquire, at a time of printing on the printing medium, a recorded radio wave strength of an RFID at a printing starting position, and write onto the RFID at the printing starting position with a writing radio wave strength corresponding to the obtained radio wave strength. ### Claim 6 (depends on 1) The printer according to claim 1, wherein: the controller is configured to cancel the printing in response to determining that the RFID is not normal. ### Claim 7 (depends on 1) The printer according to claim 1, wherein the controller is configured to print an indication that the RFID is not normal in response to determining that the RFID is not normal. ### Claim 8 (depends on 1) The printer according to claim 1, wherein the controller is configured to write an indication that the RFID is not normal on the RFID in response to determining that the RFID is not normal. ### Claim 9 A control method of a printer configured to print on a printing medium having an RFID, the method comprising: obtaining a radio wave strength threshold associated with the RFID, determining a radio wave strength of a signal received from the RFID, and determining whether or not the RFID is normal based on a comparison between the determined radio wave strength of the signal received from the RFID and the radio wave strength threshold. ### Claim 10 A non-transitory computer-readable medium storing a program executable by a computer of a printer configured to print on a printing medium having an RFID, the program causing the computer to: obtain a radio wave strength threshold associated with the RFID, determine a radio wave strength of a signal received from the RFID, and determine whether or not the RFID is normal based on a comparison between the determined radio wave strength of the signal received from the RFID and the radio wave strength threshold.