Bematech LR2000 Programming Manual page 19

 The allowable character code range is from ASCII code <20>H to <7E>H (95
[Notes]
characters).
 It is possible to define multiple characters for consecutive character codes. If only
one character is desired, use c1 = c2.
 d is the dot data for the characters. The dot pattern is in the horizontal direction
from the left side. Any remaining dots on the right side are blank.
 The data to define user-defined characters is (y×x) bytes.
 Set a corresponding bit to 1 to print a dot or 0 not to print a dot.
 This command can define different user-defined character patterns for each font.
To select a font, use ESC ! or ESC M.
 User-defined characters and a downloaded bit image cannot be defined
simultaneously. When this command is executed, the downloaded bit image is
cleared.
 The user-defined character definition is cleared when:
1) ESC @ is executed.
2) GS is executed.
3) ESC ? is executed.
4) The power is turned off.
 When user-defined characters are defined in Font B (9 17), only the most
significant bit of the 3rd byte of data in vertical direction is effective.
[Default] The internal character set
[Reference] ESC %, ESC ?
[Example]
 When Font A (12×24) is selected.
LR2000 Programming Manual V1.2