JPS60185965A - Electronic copying machine with copying unit - Google Patents

Abstract

PURPOSE:To improve operability by providing a copying machine frame side with an opening and closing member for the opening and closing cover of the image formation optical system incidence window of the copying unit, and opening the cover during the loading of the copying unit and closing it during the unloading securely. CONSTITUTION:The unit 1 in which a photosensitive drum 2, developing device, cleaner device, etc., are packaged is moved as shown by an arrow X and slid into the copying machine frame. The front end part 10' of the opening and closing cover 10 is a guide part formed as a gentle rise part, and when it passes through a cam taper part 15 fixed to the main frame side, the opening and closing cover 10 is rotated by >=90 deg.. When the copying unit 1 is detached, the cam taper part 15 passes through a cover front end part 10' and is freed, and the opening and closing cover 10 closes the image formation optical system incidence window 20 with a torque spring 18 and a hinge 19.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electronic copying machine, and particularly to an electronic copying machine having a detachable copying unit.

(Conventional technology #i) In order to improve maintenance performance and operational performance in copying machines, the photoreceptor and its surrounding developing device, cleaning device, etc. are integrated into a unit, and this unit (hereinafter referred to as the copy unit) is easily attached and detached for replacement. I am trying to make it possible.

This copy unit does not include an exposure device, and since the exposure device is provided in the main body of the copying machine, it is necessary to provide an entrance window for the imaging optical system of the exposure device in the copy unit.

A cover is already attached to this window to protect the photoreceptor from outside light and to prevent dust from entering through the window.

Conventionally, the opening/closing cover of such a unit has been opened and closed by hand when installing or removing the unit, but since people sometimes open and close it incorrectly, they have to be very careful each time, resulting in poor operability. Ta.

(Purpose) The present invention solves these problems and improves the handling of the machine [such as enabling even an inexperienced person to attach and detach the copying unit without error, and preventing accidental attachment and detachment of the copying unit. The purpose is to provide a copying machine with good performance.

(Structure of the Invention) This object is to provide a copying machine having a replaceable copying unit including a photoreceptor, the copying unit having an opening/closing cover for an entrance window of an imaging optical system;

An opening/closing member for the cover is provided on the copying machine main body side, so that the cover is opened when the copy unit is attached to the reproduction machine main body, and the cover is closed when the copy unit is removed from the copy machine main body. This is achieved by a copying apparatus having a copy unit characterized by the following.

(Example) The present invention will be explained below with reference to illustrated embodiments.

As shown in FIG. 1, the unit 1 including the photosensitive drum 2, developing device 3, cleaner device 4, etc. has its unit guide 7.8 sliding on the guide rail 5.6 of the main body 14, making it easy to install and remove. For example, a copy unit with almost the same root as that shown in Japanese Patent Publication No. 181061/1986 can be used. In this copying machine, the opening/closing cover 10 of the entrance window of the imaging optical system is always opened when the copying unit is installed and closed when the copying unit is removed, so its structure is explained in FIG. 2 and FIG. M3. It looks like this. @2 [J shows the copy unit 1 with the main body 14 also removed, FIG. 2A is a plan view of the entrance window of the copy unit, and FIG. 2B is a side view thereof. Third
The figures show the part that engages with the entrance window of the copying unit on the copying machine main body side. Figure 3A is a view of this retaining part viewed from above, and Figure 3B is a view of it viewed from the side. It is. To insert the copy unit into the main body of the copying machine, move it in the direction of arrow X and slide it into the main body. The opening/closing cover 10 of the copy unit, which has been removed from the main body, blocks the entrance window of the copy unit using, for example, a torque spring 18 and a hinge 19. The right end portion 10' of the opening/closing cover is, for example, a guide portion formed as a gently rising portion as shown in the figure, and is separate from the cam taper portion 15 fixed to the main body side as shown in FIG. When the right end 10' of the opening/closing cover passes through the cam taper part 15 during the initial slide when the copy unit is attached to the main body, the opening/closing cover can be rotated more than 90', and thereafter it will not slide completely. It will remain open until the installation is complete. Guide 1
6 is a means for stabilizing the opening angle of the opening/closing cover 10 by supporting it not only by the cam taper part 15 but also by the guide 16 on both sides when the copy unit is attached to the main body. When the copy unit 1 slides along the guide rail and is removed from the main body, the right end 10' of the opening/closing cover passes through the cam taper portion 15 and comes off, and the opening/closing cover 10 is moved by the torque spring 18 to form an image. Closes the optical system entrance window.

Also, a cleaning member 9 is installed near the tip of the opening/closing cover as shown in FIGS. 2 and 3, but the copy unit 1
When the member 9 is attached to and detached from the main body 14, the surface of the optical system component shown in FIG. 3, for example, the dust can be wiped off to make the surface clean. Note that the cleaning member may be one that cleans a dust-proof glass surface provided at a light exit near the drum in a normal imaging optical system.

(Effects of the Invention) As explained above, when the copy unit is removed, the Fi photosensitive drum surface is protected and the copy life is maintained, and when the copy unit is installed, the imaging optical system entrance window can be closed for copying. It is possible to automatically and reliably easily open and turn the state.

Furthermore, according to an embodiment of the present invention, by attaching the cleaning member to the opening/closing cover, the surfaces of the optical system components can be easily kept clean, and the quality of copies can always be kept in good condition. Furthermore, it can be expected to be effective as a means of making maintenance free.

[Brief explanation of drawings]

Figure 1 shows the state in which the copy unit and main body are combined, from the stop surface to
, FIG. 3 is a plan view and a side view of the relationship between the opening/closing cover and the optical system component surface when the copy unit and main body are combined. 1... Copy unit 9... Cleaning member 10 ... Opening/closing cover 10'... Opening/closing cover tip guide portion 15... Cam taper part 16... Guide 18...
・Torque spring 19... Hinge agent Patent attorney Noda 6
Parent figure 1 figure 2 (A) figure 3 (A)

Claims (2)

[Claims] (1) In a copying machine having a replaceable copying unit including a photoreceptor, the copying unit is provided with an opening/closing cover for the imaging fiber entrance window, and an opening/closing member for the cover is provided on the copying machine main body side. A copying apparatus having a copying unit, wherein the cover is opened when the copying unit is attached to the copying machine main body, and the cover is closed when the copying unit is removed from the copying machine main body. Device. (2) In the copying unit, a cleaning member for cleaning the surface of the biological component near the tip of the opening/closing cover is also provided in a five-digit range. A copying device having a unit.