| 摘要 |
A printer comprises a frame, a platen supported by the frame for undergoi ng rotation, and a printing head for printing on a recording medium fed between the platen and the printing head. The printing head is supported by the frame for undergoing pivotal movement into and out of pressure contact with the platen. A biasing member is mounted for movement between a first position in which the biasing member is in a neutral, unstretched state, and a second position in which the biasing member is in stretched state. The biasing member has a first end integrally connected to the printing head and a second end opposite the first end. An operation member is integrally connected to t he second end of the biasing member and is supported by the frame for undergoing pivotal movement between a first position and a second position. When the operation member is pivoted to the first position, the biasing member is moved to the first position and th e printing head is pivoted out of pressure contact with the platen. When the operation member i s pivoted to the second position, the biasing member is moved to the second position and the printing head is pivoted into pressure contact with the platen.
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