| 摘要 |
PURPOSE:To reduce the frequency at which controlling actions are performed and eliminate labor in input operations for clearing the controlling actions, by inhibiting controlling actions such as error lock for an operation in excess of a predetermined quantity of a type-detecting means in the beginning period on throwing in a power source. CONSTITUTION:An auto-clearing signal generating circuit 2 generates an auto- clearing signal RES and supplies it to a CPU5 when a power source for the printer is thrown in. by this, a motor signal MT is set to logic '1' to drive a motor 14, thereby rotating a type wheel 17 by at least 3 revolutions, and the type-detecting means 12 and a home position detecting means 13 are operated at least predetermined numbers of times. During this period, even where the operation of the means 12, 13 is defective, error lock is not conducted, and a cleared state is maintained. Malfunction of the means 12, 13 are overcome in most cases during when the means 12, 13 are operated at least predetermined numbers of times. |
