1. An output apparatus comprising: input means for inputting character pattern information; memory means for registering the input character pattern information in dot form; discriminating means for discriminating whether character pattern information for a character pattern to be output is stored in said memory means after receipt of output information; and pattern generating means for (1) extracting character pattern information in vector form, from the dot form character pattern information stored in said memory means, and generating the character pattern to be output from the extracted vector form character pattern information, responsive to a discrimination by said discriminating means that the character pattern information for the character pattern to be output is not stored in said memory means, and for (2) generating the character pattern to be output from the dot form character pattern information stored in said memory means responsive to a discrimination by said discriminating means that the character pattern information for the character pattern to be output is stored in said memory means.