JPH02276728A - Paper feeding cassette - Google Patents

Abstract

PURPOSE:To facilitate the recognition of the paper size indication by displaying the paper size which can be set within a range of the shift of a paper stopper onto the outer peripheral surface of a rotary body which has a truncated conical shape and can be turned in the horizontal direction by a prescribed angle, in interlocking with the paper stopper, and by exposing a display surface from an aslantly upward window formed at a proper position on the side wall of a cassette body. CONSTITUTION:Paper stoppers 52 and 53 which can shift in the longitudinal direction on the inner bottom surface of a cassette body 50 are installed. The paper size which can be set within a range of the shift of the paper stopper is displayed on the outer peripheral surface of a rotary body 58 having a truncated cone form which can be turned in the horizontal direction by a prescribed angle in interlocking with the paper stopper, and the display surface is exposed from an aslantly upward window 506 formed at a proper position on the side wall of the cassette body 50. Therefore, an operator can clearly recognize the size indication, in the standing attitude during operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a paper feed cassette that stores recording paper to be fed into a copying machine, and particularly to a paper feed cassette that can automatically display the paper size on a side wall window. It concerns cassettes.

[Conventional technology]

Generally, so-called universal paper feed cassettes equipped with movable paper stoppers (rear end stopper and width stopper) need to be marked so that the size of the stored recording paper can be easily seen from the outside. . For this reason, a display window has conventionally been provided on the side wall of the cassette to indicate the size of the recording paper stored in the cassette, for example rB4. A replaceable piece of paper was inserted with the following information written on it. However, this makes it troublesome to replace the piece of paper in the display window when replacing it with a recording paper of a different size, and it is sometimes forgotten. For this reason, Japanese Patent Application Laid-Open No. 56-7841 proposes a paper feed cassette that can be moved in accordance with the stored recording paper and automatically display the paper size in conjunction with a filter paper stopper. That is, according to the above publication, the paper size is displayed on a slide plate that slides horizontally in conjunction with a paper stopper and exposed through a window on the side plate of the cassette body, or is displayed vertically in conjunction with a paper stopper. It was displayed on a rotating disc and exposed through a window on the side panel of the cassette body.

[Problem to be solved by the invention]

However, in the above structure, if a rotary disk that rotates vertically is used as a means for displaying the 0 paper size, its size (diameter) is the same as the height of the side plate of the cassette body (the paper feed capacity is 250 sheets). For cassettes, the height of the side plate is 40-50a.
It is ua. ), and therefore the size of the characters displayed on the surface is also small and difficult to see. - In the case of a sliding board, large size characters can be displayed, but due to the slide space, a large number of size characters cannot be displayed, and only two characters can be displayed at most. ■In the case of either a rotary disk or a sliding plate, there were many problems such as difficulty in viewing because the display was oriented horizontally.

This invention is intended to solve the above problems,
To provide a new paper feed cassette capable of displaying large and large size characters, easy to see, and automatically displaying paper size.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a paper feed cassette equipped with a paper stopper that is movable in the front and rear directions on the inner bottom surface of a cassette main body. The display is displayed on the outer circumferential surface of a truncated cone-shaped rotating body that can be rotated horizontally at a predetermined angle in conjunction with The structure is such that the sized characters can be clearly seen while standing during a copy operation.

〔Example〕

Next, the present invention will be described based on an embodiment shown in the accompanying drawings.

Figure 1 is a partially cutaway front view of the state in which it is applied to the main body of the copying machine.
Figure 2 is a perspective view showing the outside wall window displaying the paper size;
The figure is a plan view showing the relationship between the stopper and the movable body interlocked therewith, and FIG. 4 is a sectional view taken along the line IV--IV in FIG. 3.

In the figure, numeral 10 is a main body of the copying machine, with an optical section 20 at the top, an image forming section 30 at the bottom, and a paper feed cassette 5.
A paper feed section 40 from which a paper sheet 0 can be drawn out is built-in.

The optical unit 20 illuminates the document on the document table glass 21 with a light source 22, and directs the reflected light from the document to a first mirror 23, a second mirror 24, a third mirror 25, a lens 26, and a fourth mirror 27. The image is formed on the upper surface of a photoreceptor drum 31 provided in the image forming section 30 by passing it through as shown in FIG.

The image forming section 30 has a photoreceptor drum 31 at its center, a charging section 32 surrounding it, a developing section 33 that develops the document latent image formed on the photoreceptor drum by the optical section 20 into a toner image, and the toner image. A transfer section 34 transfers the toner onto the recording paper 41 fed from the paper feed section 40, and a cleaning section 35 removes toner remaining on the photoreceptor drum after the transfer. The recording paper after being transferred by the transfer unit 34 is discharged onto a paper discharge tray 37 via a fixing unit 36.

The paper feed section 40 is equipped with a delivery roller 42 that can separate and deliver the recording papers 41 one by one from the cassette 50 of the present invention. The recording paper sent out by the delivery roller 42 is conveyed by the first paper feed roller 43 through the paper feed path 44 to the second paper feed roller 45, where it is transferred to the transfer section 34 in time with the toner image on the photoreceptor drum. Supplied. 46 is the copying machine main body 1
This is a non-cassette type paper feeding section provided on the side of the paper.

As shown in the second figure, the paper feed cassette 50 of the present application includes a Gio stopper (rear end stopper) 52 that regulates the rear end of the recording paper 41 housed so that the paper feed direction is vertically elongated, and a Gio stopper (width stopper) that regulates the width. ) 53 are provided respectively.

As shown in FIG. 3, the rear end stopper 52 can control the rear end of the recording paper of "rBd size" at the position Ll moved to the rearmost position (rearmost position), and the rear end of the recording paper of "rBd size" can be controlled at the position L1 moved to the rearmost position (rearmost position). In Lb, the trailing edge of recording paper of "rB6 size" can be regulated. However, at the position between 2 and L, L2
=F4. L,=A4. L4=85. It can be regulated as LS=A5.

That is, in this embodiment, the rear end stopper 52 is located at the rearmost position.
In the movement range from B4. F
4. A4. B5. A5. Six sizes of B6 are defined.

One end of a link 55 that can swing around a support shaft 54 is connected to the rear end stopper 52 through a long hole, and a rack 56 is connected to the other end of the link 55 through a long hole. There is. Therefore, when the rear end stopper 52 of the rack 56 is moved from the rear toward the front along the guide groove 502 provided on the cassette floor 501 (see FIG. 4), the rack 56 moves forward along the guide groove 503 under the floor of the cassette body. It is designed to move backwards in a different thread pattern. This rack 56
is meshed with a gear 59 that is integral with a truncated conical rotating body 58 that is horizontally rotatably supported in a rear corner chamber 504 on the front side of the paper feed cassette 50 of the present application via an intermediate gear 57. The rear end stopper 52 is located on the conical surface of the rotary body 58, and has a paper size that can be defined in the range from B4 to B4. F4. A4. B5. A5. B
6 is displayed and can be displayed through an obliquely upward facing window 506 provided in a side wall 505 of the cassette body. That is, the rear end stopper 52 is positioned at the rearmost position.

When the rear end stopper 52 is moved to L4, "B4" appears in the window 506, and when the rear end stopper 52 is moved to L4, the window 506 displays rB5. The amount of movement of the rear end stopper 52 and the rotation angle of the rotating body 58 are adjusted so that the following message appears.

In the above embodiment, when the recording paper is stored in the paper feed cassette of the present invention in alignment with the front wall and the rear end stopper is brought into contact with the rear end surface of the recording paper, the truncated conical shape moves in conjunction with the rear end stopper. The rotating body rotates, and the size displayed on its outer circumferential surface, such as the characters "B4" or "B5", automatically appears in a diagonally upward window on the side wall of the cassette body. This rotating body 58
Actually, the diameter of the large diameter side is approximately 70 mm and the diameter of the small diameter side is approximately 3°5ffiI11, so the outer circumferential surface is quite large, so the six types from 84 to B6 are displayed in large letters. This makes it extremely easy to see even from the operator's eye level.

In the above embodiment, only the rear end stopper is shown as a "paper stopper" for moving the rotary body, but it goes without saying that the movable body may be moved by moving the width stopper.

〔Effect of the invention〕

As described above, the present invention provides a paper feed cassette equipped with a paper stopper that can move forward and backward on the inner bottom surface of the cassette body, in which the paper size that can be defined within the range of movement of the paper stopper is linked to the paper stopper. The display is displayed on the outer circumferential surface of a truncated cone-shaped rotating body that can be rotated horizontally at a predetermined angle, and the display surface is exposed through an obliquely upward-facing window provided at an appropriate position on the side wall of the cassette body. ′,
This provides an excellent effect in that characters of various sizes can be displayed in a large size and in a state that is easy to see from diagonally above.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a partially cutaway front view of the state in which it is applied to the main body of a copying machine, and Fig. 2 is a perspective view showing the movable body displaying the paper size and the window on the outer wall of the cassette. figure,
FIG. 3 is a plan view showing the relationship between a stopper and a movable body interlocked therewith, and FIG. 4 is a sectional view taken along the line IV--IV in FIG. 0-... Cassette of the present application 2-... Rear end stopper (Gi stopper) 3...41! Stopper (Gi stopper) 4 - Support shaft 5 - Link 6 - Rack 7 - Intermediate gear 8 - Movable body 9 - Movable body gear 01 - Cassette floor 02 - Guide groove 03 - Guide groove 04 - Rear corner chamber 05 - Cassette outer wall 06 - Window

Claims (1)

[Claims] In a paper feed cassette equipped with a paper stopper that can move forward and backward on the inner bottom surface of the cassette body, the paper size that can be defined within the range of movement of the paper stopper is rotated horizontally at a predetermined angle in conjunction with the paper stopper. A paper feed cassette characterized in that a display is displayed on the outer peripheral surface of a rotating body having a truncated conical shape, and the display surface is exposed through an obliquely upward-facing window provided at an appropriate position on a side wall of the cassette main body.