Printer registering set of glyph data in glyph index table and using the set of glyph data when generating raster data

A printer comprising:

• a first memory;
• a second memory;
• and
• a controller,
• wherein the first memory is a nonvolatile memory and the second memory is a volatile memory,
• wherein the controller is configured to perform:
• acquiring print data written in a page description language, the print data representing an image including a character, wherein a character code of the character and a font used for representing the character are selected in the print data;
• copying, when font information on the font selected in the print data is stored in the first memory, the font information from the first memory to the second memory, the font information including a plurality of sets of glyph data each specifying an outline of a corresponding character for the font;
• a first building process to build, in the second memory, a glyph index table in which no set of glyph data is registered, wherein each of the plurality of sets of glyph data can be registered in the glyph index table;
• a first determination process to determine whether a set of glyph data corresponding to the character code selected in the print data is registered in the glyph index table;
• a first glyph data acquiring process on a first condition including a condition that the first determination process determines that no set of glyph data corresponding to the character code is registered in the glyph index table, the first glyph data acquiring process being to acquire a target set of glyph data from the font information in the second memory, the target set of glyph data being the set of glyph data corresponding to the character code;
• registering the target set of glyph data acquired in the first glyph data acquiring process in the glyph index table when the first glyph data acquiring process is performed;
• a second glyph data acquiring process on a second condition that the first determination process determines that the set of glyph data corresponding to the character code is registered in the glyph index table, the second glyph data acquiring process being to acquire the target set of glyph data from the glyph index table;
• a rasterizing process to generate raster data based on the print data using the target set of glyph data;
• and
• a printing process to print an image based on the raster data.