level of paste therein it is further easy for the operator to calculate based on the knowledge of the total length of tow to be treated decreases process speed coverage etc the rate of paste utilization it is merely required to add additional dye paste from time to time thereto to maintain an appropriate level of paste therein it is easy for the operator based on the above factors to accurately estimate exactly how much dye paste will be required for the total run so that very little residual dye paste will remain in the reservoir at the end of the given run after traversing the first dye station the sheet of tow printed on side b proceeds to a second dye station designated generally as 40 referring now to fig3 a photograph of side b of the tow sheet as it emerges from the first dye station is shown it can be seen that the dye which in this case was dark brown has been printed in essentially a diagonal pattern traversing the width of the sheet it is further noted that at the first print station it is not just those fibers which may happen to be on the surface of side b of the sheet which are exposed to the dye because of the pressure between rolls 28 and 32 and the absorbent and resilient character of the covering of roll 32 the dye actually impregnated into the thickness of the sheet and generally will impregnate a substantial portion if not all of the sheet thickness the pressures of the relative rolls are adjusted in order to assure such depth of penetration as is.