JPS60211478A - Copying machine - Google Patents

Abstract

PURPOSE:To confirm easily the color of a loaded developer by connecting a means which identifies and displays the color of the developer, to a copying machine. CONSTITUTION:Projections 23b, 23c, and 23d which are different in position by the color of an internal developer are formed in the lower part of a case 23 of a developing device 9, and detection bars 26-28 are pierced by a shaft 29 and are made rotatable, and their front ends are pushed down by projections 23b- 23d of the loaded developing device 9. Connecting bars 30-32 are supported pivotally in the other ends of detecting bars 26-28, and color display plates 33- 35 having the same colors as developers are provided in upper ends of connecting bars 30-32. Consequently, when the developing device 9 having the developer of a prescribed color is loaded, prescribed one of color display plates 33-35 face a display window.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a system in which one developing device can be selected from among a plurality of types of developing devices with different developer colors and can be attached to and detached from the main body of a copying machine. Regarding copying machines.

(Prior Art) Copying machines in which developing devices filled with developers of different colors can be replaced have been known, and such copying machines perform multiple copying operations using developers of multiple colors. By repeating this process, it is possible to obtain a so-called color-copied transfer paper.

However, in a copying machine that can use multiple colors of developers, the user can freely load the developer of the color according to his/her needs, so the next person making a copy will be able to see the color of the currently loaded developer. The only way to find out what color the developer is in a developing device is to remove the developing device or actually make a copy.

(Object of the Invention) The present invention has been made in view of the above points, and its purpose is to display the color of the loaded developer so that the color of the developer can be easily confirmed. The objective is to provide a copying machine with the following features.

(Structure of the Invention) For this purpose, in the present invention, in a copying machine in which one (11i1) developing device is selected from among a plurality of types of developing devices with different developer colors and is detachable from the copying machine main body, the above-mentioned The copying machine main body is configured such that the developing device can be loaded into the interior from the top surface thereof, and the copying machine main body is provided with color display means for displaying the color of the developer, and the developing device is configured to display the color of the developer. A color identification means is provided for identification, and by loading the developing device into the copying machine main body, the color identifying means is coupled to the color displaying means, and the developer of the loaded developing device is connected to the color identifying means. The colors are displayed.

(Example) Examples of the present invention will be described below. FIG. 1 is a diagram schematically showing the entire copying machine. A document 3 is placed on a platen glass 2 that uses a document table movement method that moves back and forth in the directions of arrows A and A' relative to the copying machine main body 1, with the image to be copied facing downward. When pressed by the platen cover 4 and operating a copy start button (not shown) in this state, the platen glass 2 moves together with the original 3 and the platen cover 4, and the lower surface of the original 3 is exposed and scanned by the exposure light source 5. The image of a single part of the document 3 is a focusing light transmitter (product name: Cellhoso Cleanse).
6, it is guided to a photosensitive drum 7 as an image carrier.

This photosensitive drum 7 is provided with a photoconductive layer made of selenium or the like on the outer circumferential surface of a grounded metal cylinder. Rotate in the direction.

In addition, before the image from the focusing light transmitting body 6 arrives, the photoconductive layer of the photosensitive drum 7 is charged uniformly by a charging electrode 8 to which a DC high voltage of, for example, 5 Kv is applied. be done. Then, as the original 3 is exposed and scanned, when a light image corresponding to the image of the original 3 is irradiated onto the photosensitive drum 7, the conductivity of the part receiving the light decreases, and the part is charged. The charge escapes to the grounded metal tube of the photosensitive drum base, thereby forming an electrostatic latent image corresponding to the image of the original document 3 on the surface of the photoconductive layer.

When the photosensitive drum 7 further rotates in the direction of arrow B, the negatively charged developer from the developing device 9 is attracted to the positively charged electrostatic latent image by electrostatic force. As a result, the developer is adsorbed to the portion where the positive charge remains, and a toner image corresponding to the electrostatic latent image is formed on the surface of the photosensitive drum 7.

The transfer paper fed by the paper feed roller 11 from the transfer paper insertion section IO is aligned with the toner image on the photosensitive drum 7.
The transfer paper is sent out by the registration roller 12 at a timing such that the leading edge of the toner image and the transfer paper coincide with each other, and the transferred transfer paper is transferred to the photosensitive drum by the transfer pole 13 to which a DC high voltage is applied in the transfer section. The toner image on the surface of 7 is transferred.

Thereafter, the transfer paper on which the toner image has been transferred is separated from the photosensitive drum 7 by, for example, a separation pole 14 to which an AC high voltage is applied, and the separated transfer paper is transferred to a guide section 15 with the toner image on its upper surface. The toner image is fixed in a fixing section 16 having a heated fixing roller, and then delivered to a tray 18 by a paper discharge roller 17.

After the photosensitive drum 7 is neutralized by the removing electrode 19, its surface is cleaned by a cleaner (cleaning section) 20, and the photosensitive drum 7 is subjected to the next copying process. Copying of the original is performed through the following cycles.

In this embodiment, a hole 21a is formed in the upper surface of the main body outer casing 21, which is exposed by moving the platen glass 2 and platen cover 4 on the upper part of the copying machine main body 1 in the direction of the arrow. The developing device 9 is configured to be detachably replaceable. Note that this hole 21a can be opened and closed by a lid 22, and is normally closed.

The above-mentioned developing device 9 is entirely enclosed in a case 23 to form a cartridge, and a protrusion 23a is formed on one side of the case 23. By inserting the developing device 9 from the direction of arrow C, a stopper 23a provided on the main body 1 can be inserted. It is supported by .25 and positioned in its normal position.

By the way, when the developing device 9 is loaded from the front toward the rear, the developer on the outer surface of the developing sleeve 50 of the developing device 9 may adhere to the surface of the photosensitive drum 7 . Therefore, in order to prevent this, the distance between the developing sleeve 50 and the photosensitive drum 7 is increased during insertion, and when the developer 9 is loaded, the distance between the developing sleeve 50 and the photosensitive drum 7 becomes the correct gap when the developer 9 is completely loaded. guide, which is quite complex. However, in the method of loading in the direction of arrow C, that is, from top to bottom in this embodiment, the developing device 9 only needs to be guided linearly, and the guiding becomes extremely simple.

At the bottom of the case 23 of the developing device 9 described above, protrusions 23b, 23C1, or 23d are formed at different positions depending on the color of the developer inside.

Detection rods 26 to 28 are rotatable by being inserted through a shaft 29, and their tips are pressed downward by protrusions 23b to 23d of the loaded developing device 9. Connecting rods 30 to 32 are pivotally supported at the other ends of the detection elements 26 to 28, respectively, and color display plates 33 to 35 of the same color as the developer are provided at the upper ends of the connecting rods 30 to 32. ing. 36 to 38 are springs that bias the detection rod. Reference numeral 39 denotes a color display window formed on the side d■ of the outer casing 21 of the main body 1.

In the above, the protrusion 23b of the developing device 9 is for example used for black identification, 23c is for red identification, and 23d is for yellow identification,
In addition, the color display plate 33 is used for black display, 34 is used for red display, and 3 is used for displaying red color.
5 is used for yellow display.

Figures 1 and 2 show a developing device 9 filled with black developer.
This shows an example in which the developing device 9 is loaded with a protrusion 2.
3b is provided. In this case, by inserting the developing device 9 from the direction of arrow C, the protrusion 23t)
presses the tip of the detection rod 26 downward, so that the connecting rod 30 rises in the direction of the arrow, and the color display plate 33 for black display at the upper end thereof faces the window 39.

As a result, it can be determined by visually checking the window 39 that the color of the developer in the currently loaded developing device 9 is black. Developing device 9 filled with developer of another color
When loaded, the color display plate 34 or 35 will similarly face the window 39 and the color will be displayed.

FIG. 3 shows another embodiment, in which a microswitch 4 is placed at the same position instead of the detection rods 26 to 28 described above.
0 to 42 are arranged.

Reference numerals 43 to 45 indicate color display lamps disposed on the operation panel or the like, where the lamp 43 is for black display, the lamp 44 is for red display, and the lamp 45 is for yellow display.

46 is a power terminal.

In this example, a developing device 9 filled with a red developer, for example.
When loaded, the protrusion 23c is connected to the microswitch 41.
, the red display lamp 44 connected to the microswitch 41 lights up.

Note that although an example in which three types of colors can be identified has been described above, the number of colors can be increased or decreased as desired.

(Effects of the Invention) As described above, according to the present invention, when the developing device is inserted into the copying machine main body, the color of the developer filled inside the developing device is automatically identified and displayed. Copying in color can be prevented, and since the developing device is inserted into the copying machine from the top surface, the insertion guide mechanism is simple.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic explanatory diagram of a copying machine according to an embodiment of the present invention, FIG. 2 is a perspective view showing a developer color identification mechanism of a developing device, and FIG. 3 is an explanation showing another identification mechanism. It is a diagram. 9... Developing device, 23... Case, 23b to 23d
... protrusion for color identification, 24.25 ... stopper, 2
6-28...Detection rod, 29...Axis, 30-32...
・Connecting rod, 33-35...color display board, 39...window,
40-42...Micro switch, 43-45...
Lamp, 50...Developing sleeve. Patent applicant: Konishiroku Photo Industry Co., Ltd. Representative patent attorney Tsuneaki Nagao0

Claims (1)

[Scope of Claims] (l) In a copying machine in which one developing device is selected from among a plurality of types of developing devices with different developer colors and is detachable from the copying machine main body, the above-mentioned copying machine main body The above-mentioned copying machine is configured such that a developing device can be loaded into the interior from the top surface thereof, and the main body of the copying machine is provided with a color display means for displaying the color of the developer, and the developing device is provided with a color display means for displaying the color of the developer. A color identification means is provided for identifying the developing device, and when the developing device is loaded into the main body of the copying machine, the color identifying device is coupled to the color displaying device to identify the developing device. A copying machine characterized by displaying the color of the agent.