Fitzpatrick, Cella, Harper & Scinto
System for switching from control program stored in an output apparatus to control program stored in detachable memory based on discriminated feeding status of recording medium
 There is disclosed an information processing apparatus, such as a printer, capable of selectively using plural control programs by utilizing an external memory, such as a program cartridge, containing additional programs. When a switching of control program is requested for example by a switch, the start address of the requested program is indirectly obtained by referring to a fixed address of the memory cartridge containing the requested program. 
Canon Kabushiki Kaisha
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inventional additional additional additional additional
Yutaka Kunio Haruo Yoshiaki
Murakami Okada Fujita Kawamura