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Duplex System Printing Methods

Duplex: Prints on both sides of a form.

Simplex: Prints on one side of a form.

You can operate these printers as follows:

Duplex Printing

Duplex printing is achieved by arranging both printers in series, separated by a Buffer/Flipper Unit, in a configuration that takes the continuous forms exiting from the first printer through a Buffer/Flipper Unit that turns the forms over (inverts them) before threading them through the second printer. The first printer in the paper path prints one side of a form; the second printer in the paper path prints the other side of the form.

Allowable printer system configurations are inline (see Inline Configuration for a Duplex Printing System), or a left 90° angle (see Left Angle Configuration for a Duplex Printing System). Only a Buffer/Flipper Unit may be installed between Printer 1 and Printer 2.

The forms path can be:

When running duplex printing applications, both printers in the configuration are operating at the same rate of impressions per minute (IPM). The total speed or IPM of the subsystem is then twice the IPM of an individual printer, counting both the front and back sides of the forms. As an example, 112 impressions per minute in 1-up mode with 8½ form moving in the process direction. The total speed of the subsystem is then up to 344 IPM in 2-up mode, counting both the front and back sides of the forms.

Up to three preprocessing/postprocessing devices may be connected to Model ED1 and up to two preprocessing/postprocessing devices may be attached to Model ED2.

Both printers in the configuration attach to a host system through the AFCCU, which controls both printers simultaneously and is physically attached to Printer 2 in the configuration.

Simplex and Dual Simplex Printing

The configuration shown in Left Angle Configuration for a Dual Simplex Printing System supports simplex (single-sided) printing as follows:

Both printers in the configuration attach to a host system through the AFCCU, which controls both printers independently and is physically attached to Printer 2 in the configuration.