Abstract: A data generating device is for generating writing data. The data generating device is connected to a writing device for writing a character on a recording medium based on the writing data. The data generating device includes an input unit configured to input the character and a layout, the layout being defined by a position, a size, and a range of writing the character; a calculation unit configured to calculate, in response to detecting that the character or the layout is changed, a writing time for writing by the writing device based on whether the character is to be written, an order of writing the character, and the layout; and an output unit configured to generate the writing data based on the character and the layout, and configured to output the generated writing data to the writing device.