JPH0364410B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a paper feed cassette that also serves as a paper discharge tray for use in recording devices such as copying machines and printers.

(B) Prior Art A paper feed cassette which swingably supports a lid covering the upper opening of a container for storing recording paper and which also serves as a paper ejection tray is disclosed in Japanese Utility Model Publication No. 16738/1983. Are listed.

Hereinafter, a conventional paper feed cassette that also serves as a paper discharge tray will be explained based on FIGS. 2 and 3.

In FIGS. 2 and 3, 51 is a cassette main body, and 52 is a guide erected on the side surface of the cassette main body 51. As shown in FIGS. Reference numeral 53 denotes a fixed lid that covers the opening 54 formed in the upper part of the cassette main body 51 except for the feeding section 55 through which the recording paper is fed. A movable lid 56 is swingably supported by the fixed lid 53. This movable lid body 56 is
In the state shown in FIG. 2, the feeding section 55 is covered and the third
In the state shown in the figure, it serves as a paper discharge tray.

(c) Problems to be Solved by the Invention In the paper feed cassettes shown in FIGS. 2 and 3, it is not possible to change the extension length of the movable lid 56 from the cassette body 51, so there is no problem with the paper ejection tray. When necessary, the movable lid body 56 sometimes became stuck.

(d) Means for Solving the Problems The present invention provides a recording device that includes a container having an opening at the top so as to store recording paper, and a lid that covers at least a portion of the opening. In a paper feed cassette for a recording device that can be stored in a main body together with the lid, the lid can be moved into and out of the recording device when the paper feed cassette is attached to the recording device. A paper feed cassette for a recording apparatus, characterized in that the lid, which is slidably attached to the upper surface of the opening and protrudes from the recording apparatus, is used as a paper discharge tray.

(E) Function The lid covering the opening of the container extends from the container by a necessary length and is used as a paper discharge tray.

(f) Embodiment FIG. 1 is a schematic sectional view showing an outline of an electronic copying machine equipped with an embodiment of the present invention. First of all,
Based on this figure, an overview of the electronic copying machine will be given.

Reference numeral 1 denotes a copying machine main body, and a document table 2 made of a transparent glass plate is mounted on the top surface of the copying machine main body 1 so as to be slidable in the left-right direction. A cover 3 is attached to the upper surface of the document table 2 so as to be openable and closable. During a copying operation, the document is held between the document table 2 and the cover 3 and scanned in the left and right direction. A photoreceptor drum 4 whose peripheral surface is coated with a polyvinyl carbazole photoreceptor is rotatably mounted on the copying machine main body 1 . A short focus lens array 5 is vertically disposed on the top of the photosensitive drum 4 to form an image of the original placed on the original platen 2 on the circumferential surface of the photosensitive drum 4. An exposure lamp (halogen lamp) 6 is provided to the right of the short focal length lens 5 for illuminating the surface of the document.
7 is a reflection plate of the exposure lamp 6.

A charging corotron 8 for uniformly positively charging the photosensitive drum 4 (approximately 600 V) is fixedly installed upstream of the short focus lens array 5.

A developing device 9 is provided on the downstream side of the short focus lens array 5 for developing the electrostatic latent image formed by the charging corotron 8 and the short focus lens array 5 with toner. The developing device 9 includes a rotatable magnet roller 10 for conveying a developer consisting of a mixture of toner and carrier toward the surface of the photoreceptor drum 4, and a screw 11 for mixing the toner and carrier. Built-in.
A toner hopper 12 is detachably attached to the upper part of the developing device 9, and a sponge roller 13 is provided at the bottom of the toner hopper 12 to supply the toner stored inside to the developing device 9 little by little. .

Reference numeral 14 denotes a manual paper feed tray provided in the copying machine main body 1, and a start switch (not shown) that also serves as a jam sensor is provided downstream of the paper feed tray 14.

Reference numeral 15 denotes a paper feed cassette that is detachably attached to the inner bottom of the copying machine main body 1. This paper feed cassette 15 is installed from the right side to the left side of the copying machine main body 1. A support plate 17 on which the copy paper 16 is placed is slidably provided at the inner bottom of the paper feed cassette 15, and the base end of the support plate 17 is located at the bottom of the copy machine main body. 1 is provided with an opening 19 through which the free end of a push-up lever 18, which is swingably mounted on the inner bottom of the push-up lever 18, can be pushed through. The push-up lever 18 is equipped with a torsion spring (not shown) that biases it to rotate clockwise, and the downstream end of the support plate 17 is biased upward by this torsion spring. ing. Further, above near the downstream end of the paper feed cassette 15, there is provided a paper feed roller 20 that feeds the copy paper 16 one sheet at a time. It's pressing. Therefore, the copy paper 16 is loaded by the weight of the paper feed roller 20 and the push-up lever 18.
It will be held in place by a torsion spring attached to the. Further, an opening 21 provided at the upper part of the paper feed cassette 15 has an opening 21 provided therein.
A paper discharge tray 22, which also serves as a lid for the paper feed cassette 15, is slidably attached to the paper feed cassette 15.

On the downstream side of the paper feed cassette 15, the copy paper 16 fed by the paper feed roller 20 is placed in an upward direction.
A guide 24 for turning is provided. The guide 24 is formed integrally with the paper feed table 14 and is configured to be rotatable about a support shaft 25 inserted through the lower end thereof as a fulcrum.

On the downstream side of the guide 24, there is a paper feed cassette 1.
A pair of register rollers 26, 2 for once stopping the copy paper 16 fed from 5 or the paper feed tray 14 and then re-feeding it in synchronization with the second operation of the original document.
7 is provided.

A transfer corotron 28 for transferring the toner image developed by the developing device 9 onto the copy paper 16 is provided at the lower end of the photosensitive drum 4 . Further, on the downstream side of the transfer corotron 28, a separating claw 29 for separating the copy paper 16 from the photosensitive drum 4 is arranged adjacent to it. This separation claw 29
is rotatably mounted on the support shaft of the upper roller 30 of the pair of conveying rollers 30 and 31, and is urged to rotate toward the surface of the photosensitive drum 4 by a spring (not shown). .

On the downstream side of the conveyance rollers 30 and 31, there is a halogen lamp 3 of about 800W as a heater inside.
A fixing device is provided, which includes a heat roller 33 through which a heat roller 2 is inserted, and a pressure roller 34 that is pressed against the heat roller 33. An oil supply pipe 35 for supplying silicone oil to the heat roller 33 is lightly pressed onto the upper part of the heat roller 33 . Fine open cells are formed on the wall of the oil supply pipe 35, and the inside thereof is filled with silicone oil. Therefore, the silicone oil in this oil supply pipe 35 permeates the wall of this pipe 35 and is gradually supplied onto the heat roller 33. Also,
On the left side of the pressure roller 34, this roller 34
A torsion spring 36 is provided for pressing the heat roller 33 in a counterclockwise direction, that is, in the direction of the heat roller 33. 37 is a triangular blade for separating the copy paper 16 from the heat roller 33.

The copy paper 16 on which the toner image has been fixed by the fixing device is delivered to a paper discharge tray 22 which is slidably provided in the opening 21 of the paper feed cassette 15.
It will be discharged to the top. The paper ejection tray 22 is configured to be able to move in and out of the paper feed cassette 15, and is inserted into the paper feed cassette 15 when not needed.

The copy paper 16 is located on the downstream side (upper side in the figure) of the separating claw 29 along the rotational direction of the photosensitive drum 4.
A cleaning device 38 is provided to remove toner that has not been completely transferred and remains on the photosensitive drum 4. The cleaning device 38 includes a rubber blade 39 for scraping off residual toner on the photosensitive drum 4, and a screw conveyor 40 for discharging the toner scraped off by the blade 39. .

Further, on the right side of the copying machine main body 1, that is, on the side where the paper ejection tray 22 and the paper feed cassette 15 are attached, there is a handle 4 for lifting the copying machine main body 1.
1 is permanently installed.

Further, a prismatic rubber cushion 42 is fixed to the side surface (left side surface) of the copying machine main body 1 opposite to the side surface on which the handle 41 is fixed. This rubber cushion 42 serves to protect the copying machine main body 1 when the copying machine main body 1 is placed on the ground or the like in a lifted position.

After placing the original on the original platen 2,
When a copy start switch (not shown) is turned on, the document table 2 moves forward to the left and then back to the right. During this backward movement, the document image is placed on the photoreceptor drum 4. The projected image is formed on the photoreceptor drum 4 to form an electrostatic latent image corresponding to the original image. This electrostatic latent image is developed with toner by the developing device 9, and this toner image is transferred by a transfer corotron 28 onto the copy paper 16 fed from the paper feed cassette 15. The copy paper 16 on which the toner image has been transferred in this manner is peeled off from the photosensitive drum 4 by the separating claw 29, and is fixed by heating and pressure in a fixing device. Then, the fixed copy paper 16 is placed on the paper discharge tray 22.

FIGS. 4, 6, and 8 show an embodiment of the present invention, and are a top view of the paper feed cassette 15 provided in the electronic copying machine shown in FIG. 1, and FIGS. 9 is a side sectional view corresponding to FIGS. 4, 6, and 8, respectively, and FIG. 10 is a partially enlarged view of FIG. 6.

In FIGS. 4 to 10, 43 is a container in which the copy paper 16 is stored, and 44 is a cylindrical upright portion provided at the bottom of the container 43. In FIGS. This standing part 4
4 is a recess (not shown) provided in the copying machine main body 1;
The paper feed cassette 15 is positioned and attached to the main body 1 of the copying machine. The upper surface of the container 43 is an opening 45, and the paper discharge tray 22 is slidably attached to the opening 45.
Note that the paper discharge tray 22 can also serve as a lid for covering the opening 45.
That is, as shown in FIGS. 4 and 5, when the paper discharge tray 22 is inserted into the container 43,
A portion of the opening 45 except for a feeding section 46 through which the copy paper 16 is fed is covered.

Reference numerals 47 and 47 denote stoppers provided on the inner surface of the container 43. When the hooks 48 and 48 at the tip of the paper ejection tray 22 are engaged with the stoppers 47 and 47, the paper ejection tray 22 Unnecessary immersion into the interior of the container 43 is restricted. 49,49
are protrusions provided on both side edges of the paper ejection tray 22;
Reference numerals 50 and 50 indicate stop portions protrudingly formed on the inner surface of the container 43 in order to stop the hook portions 48, 48 or the protrusions 49, 49.

6 and 7 show the state in which the paper discharge tray 22 is pulled out by a predetermined length and the protrusions 49, 49 are stopped at the stops 50, 50. 8 and 9 show the state in which the paper discharge tray 22 is pulled out from the container 43 to the maximum extent and the hook portions 48, 48 are stopped at the stop portions 50, 50. Note that it is also possible to pull out the paper discharge tray 22 from the container 43. Figure 10 shows the hook part 4 in Figure 6.
8. This is an enlarged view of the protrusion 49 and the stop portion 50.

(G) Effects of the Invention The present invention includes a container having an opening at the top so as to store recording paper, and a lid that covers at least a portion of the opening, and the lid is placed inside the recording apparatus main body. In a paper feed cassette for a recording device that can be stored with the body, the lid body is formed on the upper surface of the opening so that it can be moved in and out of the recording device when the paper feed cassette is attached to the recording device. Since it is slidably attached, the lid can be used as a paper ejection tray and pulled out the desired length from the recording device only when necessary. When the recording device is not in use, the lid can be inserted into the main body of the device. It can be stored.

Therefore, the lid does not get in the way when the recording device is not in use, and can be used as a paper discharge tray only when necessary.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of an electronic copying machine equipped with an embodiment of the present invention, FIGS. 2 and 3 are side views of a conventional paper feed cassette, and FIGS. The figures are top views of one embodiment of the present invention, FIG. 5, FIG.
FIG. 9 is a side sectional view of one embodiment of the present invention, and FIG. 10 is a partially enlarged view of FIG. 6. 15... Paper feed cassette, 22... Paper discharge tray (lid), 43... Container, 45... Opening.

Claims (1)

[Scope of Claims] 1. A container having an opening at the top for storing recording paper, and a lid that covers at least a portion of the opening, and is stored together with the lid in a recording device main body. In the paper feed cassette for a recording device, the lid body is slidable on the upper surface of the opening so that it can be moved in and out of the recording device when the paper feed cassette is attached to the recording device. A paper feed cassette for a recording apparatus, characterized in that the lid, which is attached to the paper and projects from the recording apparatus, is used as a paper ejection tray.