The 1800S by MBM features an ultrasonic double feed sensor, and is able to detect double feeds on any white, printed, transparent, black, or mixture of colored sheets. Includes removable folding roller for easy maintenance, adjustable folding roller pressure, and a spring loaded feed angle adjustment dial. The machine top cover opens and closes in two easy steps and the operator can reach the air adjustment knob without disruption when the top cover is open. Also features a “silver top” metal sheet for smoother paper run and better electric conductivity. Top feed, adjustable air suction feed system, suitable for digitally printed and coated stocks. Pre-programmed with 6 standard folds. Stores 30 custom folds in memory. One-touch memory keys for custom folds. Non-standard paper sizes can be stored in memory. Control touch panel includes 4 digit counter with batch and total functions. Test button folds 2 sheets for inspection. Extended exit tray for neat stacking of folded sheets. Automatic feed table ensures optimum feed pressure. Automatic conveyor belt and self-setting exit rollers ensure smooth ejection of folded paper. Single sheet feeding automatically maintained for different weights of paper. Display alert and audible signal in case of incorrect operation. Skew and micro-adjustment dials. All-metal construction. Optional micro-perforator and scorer.