Alternate method of sensing paper entry

A method for detecting progress of a workpiece, the method comprising:

• (a) providing a receiving pair of rollers, each roller of said receiving pair of rollers facing the other roller of said receiving pair of rollers so that the workpiece is receivable between the rollers of said receiving pair of rollers;
• (b) revolving at least one roller of the receiving pair of rollers by applying a first torque to the at least one roller of the receiving pair of rollers, so that a peripheral speed of the at least one roller of the receiving pair of rollers is greater than a linear speed of the workpiece;
• (c) detecting a change in the peripheral speed of the at least one roller of said pair of rollers;
• (d) replacing the first fixed torque applied to the at least one roller of said receiving pair of rollers with a second fixed torque when a decrease in peripheral speed of the at least one roller of said receiving pair of rollers is detected;
• and,
• wherein a decrease in the peripheral speed of the at least one roller of the receiving pair of rollers indicates the receiving pair of rollers has received the workpiece.

A system for detecting progress of a workpiece, the system comprising:

• (a) a receiving pair of rollers, each roller of said receiving pair of rollers facing the other roller of said receiving pair of rollers so that the workpiece is receivable between the rollers of said receiving pair of rollers;
• (b) means for revolving at least one roller of said receiving pair of rollers by applying a first fixed torque to the at least one roller of the receiving pair of rollers, so that a peripheral speed of the at least one roller is greater than a linear speed of the workpiece;
• (c) means for detecting a change in peripheral speed of the at least one roller of said receiving pair of rollers;
• (d) means for adjusting the first torque to maintain the peripheral speed of the at least one roller of the receiving pair of rollers without exceeding an upper torque limit wherein the peripheral speed of the at least one roller of the receiving pair of rollers is not maintained when an amount of torque necessary to maintain the peripheral speed exceeds the upper torque limit;
• and,
• wherein a decrease in the peripheral speed of the at least one roller of said receiving pair of rollers indicates said receiving pair of rollers has received the workpiece.

A method for detecting progress of a workpiece, the method comprising:

• (a) providing a receiving pair of rollers, each roller of said receiving pair of rollers facing the other roller of said receiving pair of rollers so that the workpiece is receivable between the rollers of said receiving pair of rollers;
• (b) revolving at least one roller of the receiving pair of rollers by applying a first torque to the at least one roller of the receiving pair of rollers, so that a peripheral speed of the at least one roller of the receiving pair of rollers is greater than a linear speed of the workpiece;
• (c) detecting a change in the peripheral speed of the at least one roller of said pair of rollers;
• (d) adjusting the first torque to maintain the peripheral speed of the at least one roller of the receiving pair of rollers without exceeding an upper torque limit wherein the peripheral speed of the at least one roller of the receiving pair of rollers is not maintained when an amount of torque necessary to maintain the peripheral speed exceeds the upper torque limit;
• and,
• wherein a decrease in the peripheral speed of the at least one roller of the receiving pair of rollers indicates the receiving pair of rollers has received the workpiece.