JPS60211467A - Copying machine - Google Patents

Abstract

PURPOSE:To detach a lower cover easily by slipping the lower cover, which is provided freely attachably to and detachably from an aperture part in the lower side of a cartridge incorporating an image carrier or the like, off the cartridge when the cartridge is loaded to a copying machine body. CONSTITUTION:A lower cover 24 is provided which closes an aperture part 214 in the lower side of a cartridge 21 incorporating an image carrier 7 or the like. The cover 24 is provided with projecting parts 24b and 24c which should be engaged with notched parts 214a and 214b of the cartridge 21 and is provided with a downward projection 24e on the opposite side. When the cover 24 is cloed, a front end 24a is inserted to a slit 215 of the cartridge 21, and projections 24b and 24c are fitted to notched parts 214a and 214b, and a side edge part 24d is supported by projecting pieces 214e-214h. When the cartridge 21 is inserted to the copying machine body, which is omitted in the figure with guide projections 212 and 213, the cover 24 is inserted together, but the projection 24e is brought into contact with a machine-side frame, which is omitted in the figure, on the way and the cover 24 is slipped off the cartridge 21. Thus, the cover 24 is detached easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is characterized in that at least an image bearing member is contained in a cartridge and assembled into a 1:1 process unit, and the process unit can be removably loaded into the main body of a copying machine. The present invention relates to a copying machine that uses the following methods.

(Prior art) Copying machines, such as electronic duplication machines:
The photoconductor tram that holds the image 111 is replaced, developer toner is replenished, and the cleaning part itself that cleans the photoconductor is cleaned at regular intervals. It is difficult for the user to do this, and it is generally left to a service person with special skills.

Therefore, recently, the above-mentioned photosensitive dome, developing part, clearing FM part, etc. are included in a cartridge to form an integrated process unit I-.
A device has been proposed that can be removably loaded into the M-photograph body. For example, JP-A-57-200051
See Japanese Patent Publication No. 57-200052.

According to this, by making it easy to handle the attachment and detachment, the user can easily replace the unit, and there is no need to rely on a service person.

In addition, if this mechanism for replacing the unit is adopted, by subtracting the developer color by 1 from 2111, it will be possible to copy in a color that corresponds to the color of the original image or in a color of your choice. This is extremely convenient.

Incidentally, since the cartridge constituting this unit is formed so that a portion of the photosensitive drum is exposed, a lower lid is generally provided to cover the exposed portion.

However, conventionally, this lower cover has to be removed during loading work, and since this removal is done manually, there is a risk that fingers may come into contact with the photosensitive drum.

(Object of the Invention) The present invention has been made in view of the above-mentioned problems.The purpose of the present invention is to automatically remove the lid when loading a cartridge, so that it is possible to avoid forgetting to remove the lid and to prevent fingers from touching the image carrier. An object of the present invention is to provide a copying machine in which touching does not occur.

(Structure of the Invention) For this purpose, in the present invention, the upper part of the copying machine main body is configured to be rotatable and openable, and at least the image carrier is housed in a cartridge to form a printer, and the process unit is 1. In a 1-inch duplicating cartridge that can be removably loaded into the hand part of the copying machine body, 2. Cover the lower part of the cartridge.
1 is freely provided so that the car 1 to the lid can be loaded into a portion of the IM manuscript main body 1, and the lower lid of the manuscript can be dropped off.

(Example) Examples of the present invention will be described below. FIG. 1 is a schematic diagram of the entire copying machine. Copy l current body 1
The document 3 placed on the -1- of the platen glass 2, which uses a moving document table moving method, moves in the direction of arrow A.
With the image to be copied facing downward, it is pressed down by the platen cover 4, and when you press the copy start button (not shown) in this state, the platen glass 2 is pressed together with the original 3 and the platen cover 4. Move to that manuscript 3
The lower part of the document 3 is exposed and scanned by the exposure light source 5, and the image of the lower surface of the document 3 is transferred to a convergent light transmitter (product name: Segetsune 1-1).
The photosensitive drum 7 is guided by a lens 6 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 peripheral surface of a grounded metal cylinder, and is interlocked with exposure scanning by relative movement of the platen glass 2 with respect to the exposure light source 5 described in 1. Rotate in the direction of arrow B.

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 increases, and the charged charge of that part increases. escapes to the grounded metal cylinder 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, negatively charged toner from the developing device 9 is attracted to the positively charged electrostatic latent image by electrostatic force. As a result, the toner is attracted to the remaining positively charged portion, and a toner image corresponding to the electrostatic latent image is formed on the surface of the photosensitive drum 7.

Paper feed manual feed section 1 []
The transfer paper sent in step 1 is transferred to I-J□- on the photosensitive drum 7-.
To match the image, the tip of the toner image v1:1 and its transfer/f
The transferred transfer paper is sent out by the timing roller 12 at a timing such that the
By this, the 1-toner image on the surface of the photosensitive 1-ram 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, an AC high voltage applied to the photosensitive drum 7, and the separated transfer paper has the toner image on its upper surface. In this state, the toner image is sent through the guide section 15 and fixed in the fixing section 1 ( ) having a heated fixing roller, and then transferred to the receiving tray 1 by the paper ejection roller 17 .
Sent out on 8th.

After the photosensitive drum 7 is neutralized by the removing electrode 19, its surface is cleaned by a cleaner (cleaner JM1 portion) 20, and the photosensitive drum 7 is subjected to the next copying process. Copying of the original is performed through the above-described cycle.

Now, in this embodiment, the above-mentioned photosensitive drum 7,'! T!
The electrode 8, the developing device 9, the removing electrode 19, and the cleaner 20 are contained in a cartridge 21 to constitute one process unit U.

This cartridge 21 has an exposure slit 211 on the top surface.
However, kite protrusions 212 and 213 are formed on both sides,
An opening 214 for exposing the photosensitive drum 7 is formed on the lower surface.

The cartridge 21 is attached to the guide protrusion 212 on the guide rail 22.23 provided in the copying machine main body 1.
．． By guiding 213 and pushing it toward the back, it can be loaded into the copying machine main body 1.

1. The copying machine main body 1 consists of an upper part 1a and a lower part 1b, and the upper part 1a has a platen glass 2, a platen cover 4,
Exposure light source 5, focusing light transmitter 6, and cartridge 21
At the same time, it can be rotated and opened in the direction of arrow C using the shaft IC as a fulcrum.

Fig. 2 shows the back side of the cartridge cartridge 21 described in -1-2, with the above-mentioned opening 214 closed on the front side, and notches 214a and 214b formed on both sides of the front side. Guide pieces 2i4c and 214d are formed inside the notches 214a and 214b to face each other. In addition, there are protruding pieces 214o, 21 on both sides of the rear side of the opening rl 21a (, 1 is open, and the opening 1) 1i1.
4f are formed to face each other, and guide pieces 214g and 214h are formed inside thereof to face each other. Historically, a slit 215 is formed on the front surface of this car I ridge 21.

24 is a lower lid for closing the opening r1214 of the cartridge 2I, and the front αMl 24 a side (protrusions 24I on both sides of f\) and 24c are formed, and the rear 6fil
24d At the center is a protrusion 24c extending vertically from the lid surface.
is formed.

To attach the lower cover 24 to the open Ll 214 of the cartridge 21, with the protrusion of the lower cover 24 facing downward, insert the front end 24a of the lower cover 24 into the cartridge 21.
1 into the slit 215 from the opening 214 side, and insert the protrusions 24b, 24c of the lower lid 24 into the notches 214a,'
214b, and both sides of the rear end 24d of the lower lid 24 are between the protruding piece 214e and the guide piece 214g, and the protruding piece 2
14f and the guide piece 214h, slide it toward the back. As a result, the lower lid 24 completely closes the opening 214 of the cartridge 21 (see Fig. 3).
a)).

In this state, the cartridge 21 is attached to the guide protrusions 212 and 213 on both sides of the cartridge 21 and the guide rails 22 and 213 of the copying machine
If you push it towards the back (in the direction of the arrow) while guiding it to 3,
The protrusion 2 of the lower cover 24 is attached to the machine frame 25 on the back side of the copying machine body 1.
4e, the lower cover 24 is in contact with the cartridge 2.
1 (Fig. 3(a)).

Next, when the protrusion 24e comes into contact with the machine frame 25, the lower cover 24 is stopped from moving in the rearward direction, so that only the cartridge 21 leaves the lower cover 24 and moves in the D direction. moves relatively in the direction of arrow E. ), As a result, as shown in FIG. 3 (1)), when the cartridge 21 is completely loaded into the jM manuscript main body 1, the lower lid 24!
1! fi'/fit 24 a enters the slit 215 of the cartridge 21, and the rear 6gl 24 (i is the protruding piece 2
14e, 214", and the protrusions 24b, 24c
, is the cutout portion 214a of the opening II+ 214.

214b.

Therefore, the back side of the lower cover 24, that is, the side of the protrusion 24e falls off downward, so the upper part n1a of the copying machine main body 1 is then opened by rotating in the direction of arrow C, and the lower cover 24 is inserted into the slit 21 of the cartridge 21. can be extracted from.

(Effects of the Invention) As described above, according to the present invention, when the cartridge constituting the process unit is loaded into the main body of the copying machine, the lower cover of the cartridge falls off at the 1° U+ angle. After that, it is only necessary to remove it, and there is no need to take the trouble to remove the lower cover, and there is also no risk of touching the image 111 holder with your fingers.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing the entire copying machine equipped with a process unit according to an embodiment of the present invention, FIG. 2 is a perspective view of the bottom surface of a cartridge constituting the same process unit, and FIG.
Figure fa) is a bottom view of the same cartridge with the lower cover attached, (bl is a bottom view of the cartridge with the lower cover removed.) 7...Photosensitive drum, 8...Charging electrode, 9... ...Developing device, 19...Removal electrode, 20...Cleaner, 21...
・Cartridge that constitutes the process unit, 211・
...Slit for exposure, 212.213...Guide protrusion, 214...Aperture, 215...Slit, 24...
・Lower lid, 25...Machine frame, U...Process unit. Patent applicant: Konishiroku Photo Industry Co., Ltd. Representative Patent Attorney Tsuneaki Nagao 1

Claims (1)

[Claims] (1) The two parts of the copying machine main body are configured to be rotatable and open, and at least the image carrier is housed in a cartridge to form a process unit, and the process unit is attached to the upper part of the copying machine main body. In a copying machine which can be removably loaded, a lower cover covering the lower part of the cartridge is removably provided,
A copying machine characterized in that the lower cover falls off when the cartridge is loaded into the upper part of the copying machine main body.