Patent attributes
In a print system including a printer connected to a plurality of personal computers, the personal computer to which a lock command is inputted by a user outputs an ID code of the personal computer and a lock signal to the printer. The printer memorizes the ID code of the personal computer into a memory and goes into an unprintable state. When a lock release command is inputted to the personal computer, it outputs the ID code and a lock release signal to the printer. When the received ID code coincides with the ID code memorized in the memory, the printer goes into a printable state and accepts an image data outputted from the personal computer and performs a printing operation using the image data. Thus, the print system can prevent that the image is printed on an undesirable recording paper sheet for the user.
