Computer system for a printer which stores and operates multiple application programs

  • US 6,411,397 B1
  • Filed: 08/04/2000
  • Issued: 06/25/2002
  • Est. Priority Date: 09/05/1997
  • Status: Expired due to Term
First Claim
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1. A method for a printer wherein a plurality of application programs are implemented and used for controlling a printer mechanism in said printer to print information representing symbols, said method comprising the steps of:

  • providing memory in said printer addressable by said computer;

    storing in said memory a plurality of application programs which are each executable by said computer;

    selecting one of said application programs;

    executing said selected application program on said computer to operate said printer in accordance with said selected application program;

    receiving information for controlling printer operation from a host computer entered via a graphical user interface operating at the host computer in which said selected application program operates in accordance with said received information;

    storing in said memory font files representing data defining an outline of characters to be printed, and a character rendering program;

    executing said character rendering program on said computer in accordance with said selected application program;

    scaling the outline of each of said characters defined by said font files to a certain size for printing;

    storing said outline of each of said characters as an image in said memory;

    filling in said outline of said characters in said image stored in said memory; and

    printing said characters from said image stored in said memory.

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