Abstract: A copying machine includes a single paper supply roller for selectively conducting the paper supply in a manual supply mode wherein a copy paper is introduced through a manual inlet and in an automatic supply mode wherein a copy paper is supplied from a copy paper cassette. A copy paper biasing member is associated with the copy paper cassette so that the copy paper is depressed toward the operating region of the paper supply roller. A manual paper supply guide plate is rotatably secured to the copying machine so that the manual paper supply guide plate takes a first position wherein the manual paper supply guide plate is located under the paper supply roller for conducting the manual paper supply, and a second position not to interfere with the automatic paper supply from the copy paper cassette. A correlation mechanism is connected to the copy paper biasing member to disable the copy paper biasing member when the manual paper supply guide plate is located at the first position.

Abstract: A copying machine having a thermal fixing circuit, and a fixing temperature controlling system for regulating a desired fixing temperature in accordance with variations of copy paper characteristics. A first manual copy switch is actuated for selecting a normal fixing temperature when a normal, thin copy paper is used. A second manual copy switch is actuated for selecting a higher fixing temperature when a thick copy paper is used.