| 摘要 |
PURPOSE:To enable optimum maintenance and replacement operations and contrive enhancement of printing quality and reliability and a reduction in maintenance cost, by providing a type history memory having a nonvolatile storage function for storing the count of the number of printing actions for each type, a memory-controlling circuit, a read switch and a clear switch. CONSTITUTION:With a read switch 6 being depressed, a memory-controlling circuit 7 outputs, for printing, the contents of a type history memory 10 for all types. For this purpose, a read signal 7a is applied to a terminal AD1 of a type history memory address generating circuit 8, a read/write terminal of the memory 10 and a printing control terminal of a printing circuit 11. In response to this, the circuit 8 generates memory addresses for all types, and applies the addresses to the memory 10. An output read from the memory 10 is printed by the printing circuit 11. Thus, it is made possible to know the use history of each type, namely, the number of times the type has been used for printing. A type band is replaced, and the content of the type history memory is cleared by pressing a clear switch 5. |
