In an image processing device, in order to display an image on a display device having nonlinear gradation characteristics, first, a contrast estimation unit estimates the contrast of the image represented by the image data input from an image input device. The fluid dispenser includes a unique stored energy mechanism that provides the force necessary to continuously and substantially uniformly expel fluid from the device reservoir. The bitmaps associated with the in-line display can be generated and cached during an editing session for easy access. Sodium hydrogensulfite, potassium hydrogensulfite, ammonium hydrogensulfite or the like can be used as the hydrogensulfite compound.