Patent Number: 6,801,332

Title: Composite apparatus and printer sharing method

Abstract: A composite apparatus and a printer sharing method are provided which can use an already developed printer board and suppress an increase in product cost. If a print permission signal is true, a selector of a main controller is switched to receive a signal from a printer board. The main controller controls to which one of a printer interface of the main controller and a printer interface of the printer board a signal is transferred from the selector. Namely, when a relay receives a PRNT signal, this effect is notified to the main controller's CPU via a CPU bus, and the CPU sends a control signal to the selector via the printer interface of the main controller and a signal line. In response to this, the selector is switched to the printer board side to thereafter transfer signals from the printer board to printer to perform a print process. After the print process, the CPU sends a selector control signal to the selector via the printer interface of the main controller so that the selector is recovered to the main controller side.

Inventors: Suga; Daisuke (Toride, JP), Yoshida; Takehiro (Tokyo, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: G06F 15/00 (20060101); G06F 015/00 ()

Expiration Date: 10/02016