Explanation:

This command sets the reading resolution of the main scan and sub scan.

n1 = Main scan resolution setting in dpi

n2 = Sub scan resolution setting in dpi

The settings available on each scanner model are listed in Appendix B.

The settings available can be checked with the identity data block that is obtained with the ESC I (Request identity) command.

If a value other than an available setting is received, a command error occurs, the command is ignored, and the current setting remains in effect.

ESC R and other commands

When this command is received, the scanning area is reset to the largest area possible with the currently selected resolution and zoom values. Because of this, set the scanning area with the ESC A command after the resolution (ESC R) and zoom (ESC H) settings have been made.

See Chapter 2 for details on software control procedures and on the use of the ESC R, ESC H, and ESC A commands. Also see the ESC

Acommand.

Note:

The parameters n1 and n2 are 2-byte values. The lower byte precedes the higher byte. When the scanner accepts this command, the scanning area is reset to the maximum value allowed with the current resolution and zoom settings. Always set the resolution and zoom before the scanning area is set.

3-26Command Reference