JPS63138551U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a central vertical sectional view of an electronic copying machine to which the present invention is applied, Fig. 2 is a sectional view of the electronic copying machine taken at a point closer to the front support side plate, and Fig. 3 shows the main points of Fig. 2. FIG. 4 is a cross-sectional view similar to FIG. 2 when the rotating body is lifted to the open position, FIG. 5 is an explanatory view explaining the action when lifting the image forming unit, and FIG. 6 7 is an explanatory diagram showing another example of the cam, FIG. 7 is an explanatory diagram explaining the action of the cam shown in FIG. 2, and FIG. 8 is an explanatory diagram showing an example of a method for determining the form of the cam surface. 1...Main body, 8...Developing device, 9...Toner,
18... Cleaning device, 25... Rotating body, 3
4...Image forming unit, 36...Aperture, 37, 37
a... Guide means, 38... Cam.

Claims (1)

[Claims for Utility Model Registration] (1) The electrostatic latent image formed on the latent image carrier is visualized with toner of a developing device, the visible image is transferred to a transfer material, and the latent image after transfer is In an image forming apparatus in which toner remaining on an image carrier is cleaned by a cleaning device, the developing device and the cleaning device are rotatably connected to each other to constitute an image forming unit, and the image forming unit is connected to the image forming device. The latent image carrier is held by a rotating body that is rotatably supported on the apparatus main body, and the rotating body can be opened and closed while the latent image carrier is supported on the image forming apparatus main body side, and the image forming unit is opened and closed when the rotating body is opened and closed. 1. An image forming apparatus comprising a guide means for guiding at least one of a developing device and a cleaning device while rotating the developing device and the cleaning device around a pivot point thereof so that the developing device and the cleaning device do not interfere with the latent image carrier. (2) The guide means includes a cam provided on the image forming apparatus main body side and a follower forming a driven joint of the cam, and the follower is provided in at least one of the developing device and the cleaning device. An image forming apparatus according to claim 1 of the patent registration claim. (3) When the image forming unit rotates in a direction away from the latent image carrier from the set position where the developing device and the cleaning device can perform a developing action and a cleaning action, respectively, the developing device and the cleaning device move between them. The image forming apparatus according to claim 1 or 2, wherein the guide means is configured to rotate relative to each other about the pivot portions thereof in a direction to close the opening of the image forming apparatus. (4) When the image forming unit rotates toward the set position where the developing device and the cleaning device can perform a developing action and a cleaning action, respectively, the developing device and the cleaning device rotate in a direction that opens the opening between them. The image forming apparatus according to any one of claims 1 to 3, wherein the guide means is configured to rotate relatively around a pivot portion. (5) When the opening between the developing device and the cleaning device becomes larger than a predetermined size,
Registration of a utility model, which is provided with a biasing means that biases the image limiting device and the cleaning device in the direction of opening, and biases the developing device and the cleaning device in the direction of closing when the open state of the opening becomes smaller than a predetermined size. An image forming apparatus according to any one of claims 1 to 4.