| 摘要 |
An image data output apparatus such as a laser beam printer or the like includes an input interface, a CPU, an output interface, a detachable ROM cartridge as a character pattern generator and the like. After the initializing operation, the input interface supplies a font select command of a font to be selected to the CPU. The CPU determines whether or not attributes designated by the font select command coincide with those of fonts of the apparatus stored in respective font registers. When no coincidence is established, the CPU selects a font having attributes near those designated by the font select command. If a font having the designated attributes does not exist in the character pattern generator, the apparatus can select and generate a font having the attributes near those of the font to be selected.
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