A print controlling device includes an acquiring unit, a dividing unit, a first determining unit, and a print data generating unit. The acquiring unit acquires data representing an original image larger than a recording sheet. The dividing unit divides the original image data into image data that represent divisional images having a same size as the recording sheet. A border side has a partition line segments defined between image and margin regions of the divisional image. The original image consists of image regions of the divisional images. The image region represents part of the original image and has a colorant area to be printed with a colorant. The first determining unit determines, if the colorant area abuts a border side, whether a partition line segment abuts the colorant area based on the divisional image data. The print data generating unit generates print data by modifying the divisiona image data