Connection abnormality notification method in blue tooth apparatus in printer, involves emitting warning information when value indicating separation of blue tooth apparatuses is lesser than previously calculated value

摘要

A central processing unit of any one of blue tooth apparatus gives a command periodically, based on which a value indicating the separation of blue tooth apparatuses, is determined. The CPU emits a warning information, when the determined value is lesser than previously calculated value indicating the separation of the blue tooth apparatuses.