A manual scanning-type printing device, comprising: a processor; a print head configured to perform a printing, and a sensor configured to detect a moving direction and a moving distance of the printing device, characterized by the processor being configured to perform: processing of, while the printing device moves in a first direction, disabling the print head from performing the printing, and acquiring a first moving distance of the printing device in the first direction detected by the sensor, the first direction being opposite to a second direction and the second direction being the main scanning direction, processing of, while the printing device moves in the second direction, determining that the print head has reached a printing start position when moving of a second moving distance based on the first moving distance is detected by the sensor, and processing of, when it is determined that the print head has reached the printing start position, enabling the print head to start the printing; and a printing start position marker for position adjustment to the printing start position, wherein when a distance between the printing start position marker and the print head is defined as a first distance, the second moving distance is a distance obtained by subtracting the first distance from the first moving distance, and the processor being configured to set a position at which the moving of the second moving distance in the second direction is performed, as the printing start position. a processor; a print head configured to perform a printing, and a sensor configured to detect a moving direction and a moving distance of the printing device, characterized by the processor being configured to perform: processing of, while the printing device moves in a first direction, disabling the print head from performing the printing, and acquiring a first moving distance of the printing device in the first direction detected by the sensor, the first direction being opposite to a second direction and the second direction being the main scanning direction, processing of, while the printing device moves in the second direction, determining that the print head has reached a printing start position when moving of a second moving distance based on the first moving distance is detected by the sensor, and processing of, when it is determined that the print head has reached the printing start position, enabling the print head to start the printing; and processing of, while the printing device moves in a first direction, disabling the print head from performing the printing, and acquiring a first moving distance of the printing device in the first direction detected by the sensor, the first direction being opposite to a second direction and the second direction being the main scanning direction, processing of, while the printing device moves in the second direction, determining that the print head has reached a printing start position when moving of a second moving distance based on the first moving distance is detected by the sensor, and processing of, when it is determined that the print head has reached the printing start position, enabling the print head to start the printing; and a printing start position marker for position adjustment to the printing start position, wherein when a distance between the printing start position marker and the print head is defined as a first distance, the second moving distance is a distance obtained by subtracting the first distance from the first moving distance, and the processor being configured to set a position at which the moving of the second moving distance in the second direction is performed, as the printing start position.