PRINTING DEVICE AND CONTROL METHOD OF PRINTING DEVICE

• Main Author: UNO AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 26.07.2021
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To provide a printing device that inhibits operation stop of the control part upon occurrence of a momentary power failure.SOLUTION: A printing device comprises: a printing part that prints on a print medium; a control part that determines that an error has occurred when a first voltage corresponding to a power supply voltage supplied to the printing part is lower than a first threshold voltage; a power supply circuit that generates a drive voltage from a second voltage and supplies the drive voltage to the control part when an enable signal of a second voltage equal to or higher than a second threshold voltage is input by the power supply voltage; and a reset circuit that supplies a reset signal to the control part when a third voltage supplied by the power supply voltage becomes lower than a third threshold value. The first threshold is higher than the second and third thresholds. One or both of the power supply circuit and the reset circuit are provided with a voltage drop suppression circuit that suppresses a drop of a fourth voltage at a stage before the fourth voltage is input. The fourth voltage is: the second voltage for the power supply circuit; and the third voltage for the reset circuit.SELECTED DRAWING: Figure 2 【課題】瞬時停電が発生した場合に、制御部の動作停止を抑制する印刷装置を提供する。【解決手段】印刷媒体に印刷する印刷部と、印刷部に供給される電源電圧に応じた第１電圧が第１閾値より低い場合、エラーと判定する制御部と、電源電圧によって第２閾値以上の第２電圧のイネーブル信号が入力された場合、第２電圧から駆動電圧を生成して駆動電圧を制御部へ供給する電源回路と、電源電圧によって供給される第３電圧が第３閾値より低くなった場合、リセット信号を制御部へ供給するリセット回路と、を備え、第１閾値は、第２閾値および第３閾値より高く、電源回路とリセット回路との一方または両方に、第４電圧が入力されるよりも前段で第４電圧の低下を抑制する電圧低下抑制回路を備え、第４電圧は、電源回路については第２電圧であり、リセット回路については第３電圧である、 印刷装置。【選択図】図２