JPH07230129A - Copying machine - Google Patents

Abstract

PURPOSE:To prevent an original from going up and flying about because of the tubulence of air with the opening action of a cover part by constituting the cover part so that a 2nd cover is separated from an original placing surface later than a 1st cover in the case of the opening action of the cover part. CONSTITUTION:A copying machine main body 1 has the original placing surface 2 on its upper surface, and the original 3 is placed on the surface 2. The cover part 25 is attached to be opened/closed through a hinge part 4 at the rear of the main body 1. The cover part 25 is constituted of the 1st cover 5 intercepting light and the 2nd cover 6 provided on the lower surface side of the cover 5. The 2nd cover 6 is constituted of a frame 7 and an original cover surface 8 attached to the frame 7. When the 1st cover 5 is opened, a pin 11 reaches the end of the long hole 10 of a coupling plate 9 and the 2nd cover 6 is lifted interlocked with the 1st cover 5. At such a time, the original 3 is in a stationary state on the surface 2, and the surface 8 of the 2nd cover 6 is constituted of a thin wire rod to have structure that air is allowed to freely circulate, so that the air is prevented from being disturbed and the original does not go up again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, and more particularly to a structure of a lid portion for pressing a document.

[0002]

2. Description of the Related Art Generally, a copying machine is composed of a main body having a document placing surface and a lid covering the upper surface of the main body.

[0003]

When the lid is opened after copying the original, the original is soared and scattered due to air turbulence caused by the operation.

It is an object of the present invention to provide a copying machine which prevents such document scattering.

[0005]

In order to achieve the above object, the present invention provides a copying machine comprising a main body having a document placing surface and a lid for covering the upper surface of the main body. Blocking (that is, covering the entire document placement surface without any gaps) 1st
And a second cover that allows air to freely flow (that is, has a gap), and the second cover is separated from the document placing surface later than the first cover when the lid is opened. Is configured.

In a preferred embodiment, the second cover is elastically pressed and held on the document placing surface and the first cover is opened until the opening of the first cover reaches a predetermined amount. When the opening exceeds a predetermined amount, the second cover is linked to the first cover so as to separate from the document placement surface.
And the second covers are connected to each other.

In a further preferred embodiment, when the lid is closed, a predetermined space is formed between the second cover and the document placing surface.

In a further preferred embodiment, the second cover is composed of a plurality of elongated members (for example, wires) arranged in parallel in a fixed direction.

[0009]

When the lid is opened, the first cover opens first, and the second cover opens later. Therefore, immediately after the lid is opened, the air is largely disturbed by the opening operation of the first cover and the document tries to fly up. At this time, however, the second cover is held on the document placement surface, so Soaring is prevented. The second cover prevents the document from scattering until the first cover reaches a predetermined opening. When the first cover has a predetermined opening or more, the air turbulence is cured. After that, the second cover is lifted in conjunction with the first cover. At this time, since the second cover has a structure in which air freely flows, the air is not disturbed by the opening operation, and the document is no longer scattered.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a copying machine according to an embodiment of the present invention in a state in which a lid portion is opened. The copying machine main body 1 has a document mounting surface 2 on its upper surface, and a document 3 is placed on it. The lid 25 is openably and closably attached via the hinge 4 at the rear of the main body 1. The lid 25 is composed of a first cover 5 that blocks light and a second cover 6 provided on the lower surface side thereof. The second cover 6 is composed of a frame 7 and a document cover surface 8 attached to the frame 7, and the document cover surface 8 is composed of a plurality of white or transparent thin lines or transparent thin lines made of a material that reflects light well. It is composed of band material. These wires and the like are arranged side by side in the lateral direction (direction perpendicular to the drawing). A connecting plate 9 is fixed to the frame 7. A curved long hole 10 is formed in the connecting plate 9, and a pin 11 provided on the first cover 5 side is slidably mounted in the long hole 10. Frame 7 of first cover 5 and second cover 6
A compression spring 12 is provided between and, and urges the second cover 6 in a direction away from the first cover 5. FIG. 1 shows a state in which the pin 11 reaches the end of the elongated hole 10 and the second cover 6 projects from the first cover 5 to the outermost side (lower surface side).

With the lid 25 of FIG. 1 open, the original 3 is set and the lid 25 is closed. This closed state is shown in FIG. The original 3 is covered with the original cover surface 8 of the second cover 6. At this time, the document cover surface 8 is located apart from the upper surface of the main body 1 (document mounting surface 2), that is, the document cover surface 8 of the second cover 6 and the upper surface of the main body 1 (document mounting surface 2). The frame 7 is formed in such a manner that a space having a thickness of an ordinary document (exaggerated and broadly drawn in the figure) is formed between the frame 7 and). Therefore, the original 3 can be freely slid on the original placing surface with the lid 25 closed. As a result, the lid 25
The document can be automatically fed in the closed state, and the document automatic feeding function is not impaired in a copying machine having a continuous automatic copying function. At this time, the lid 25 is held closed against the compression spring 12 by the weight of the first cover 5 or a spring (not shown) that biases the first cover 5 toward the main body 1.

FIG. 3 shows an initial state in which the opening of the first cover 5 is small in the operation of opening the lid 25 after the copying is completed. In this state, the pin 11 of the first cover 5 is in an intermediate position where it has not reached the end of the elongated hole 10 of the connecting plate 9. Therefore, the second cover 6 is attached to the main body 1 by the compression spring 12.
Remains pressed and held on the upper surface of the. At this time, air is disturbed by the opening operation of the first cover 5 and the original 3 tries to fly up, but the original 3 is covered with the original cover surface 8 of the second cover 6.
Don't scatter. In this case, even if the position of the document 3 is slightly deviated, there is no problem because the copying is completed.

FIG. 4 shows the state in which the first cover 5 is further opened.
Shown in. When the first cover 5 is further opened, the pin 11 reaches the end of the elongated hole 10 of the connecting plate 9, and the second cover 6 is lifted in conjunction with the first cover 5. At this time, the original 3 is still stationary on the original placing surface 2, and the original covering surface 8 of the second cover 6 is made of a thin wire or the like to allow air to freely flow, so that the air is not disturbed. 3 no longer rises. Further, when the first cover 5 is lifted and the lid 25 is completely opened, the state shown in FIG. 1 is restored.

An example of the shape of the second cover 6 is shown in FIG. The wire 26 of the document covering surface 8 is attached to the support rod 13, and an opening 14 for automatic document feeding is formed below the support rod 13. The respective wire rods 26 are arranged parallel to the original flow direction so as not to obstruct the original flow during automatic original feeding. When a backup material 15 (FIG. 6) such as a white screen is provided on the upper surface of the original, the wire is provided so as to be in pressure contact with the backup surface of the backup material 15 so as not to hinder the automatic feeding movement of the original as much as possible. Constitute.

The frame 7 of the second cover 6 may be formed of a round bar material or the like, and is suitable for forming the frame itself flat and forming a space below the document cover surface 8. Spacers or leg members may be provided.

In a copying machine which does not have an automatic document feeding mechanism, the document cover surface 8 of the second cover 6 may be formed in a mesh shape or a perforated plate shape, or when the lid is closed, the document is placed. It does not have to be separated from the surface and may directly contact and press the document. Further, the document cover surface 8 may be configured such that a plurality of springs or other elastic materials are attached to the lower surface side of the first cover 5 so as to project.

FIG. 7 shows another embodiment of the present invention. In this embodiment, a spring holding member 16 is provided on the main body 1, and when the frame 7 of the second cover 6 is at a predetermined angle (dotted line C) or less, the compression spring 17 presses the frame 7 toward the main body 1 side (A
(Fig.) When the angle is exceeded, as shown in Fig. B, the first cover 5 is pressed. As a result, when the lid is closed, the first cover 5 will not be opened by the second cover 6 even if the weight of the first cover 5 is light or does not have the closing holding force. Securely kept closed. Further, the second cover 6 does not interfere with the document replacement when the lid is opened. Other configurations and operational effects are similar to those of the above-mentioned embodiment. In addition,
By appropriately selecting the pivotal attachment position of the frame 7 and the attachment position of the spring material, a tension spring may be used instead of the compression spring 17, and the same function can be obtained without increasing the size of the copying machine.

FIG. 8 shows another embodiment of the present invention.
In this embodiment, the second cover 18 is attached to the first cover 5 via a linear or plate-shaped coil spring 19. The second cover 18 is elastically attached to the first cover 5 by an appropriate length so as to be able to project from the first cover 5 by an unillustrated connecting member. Other configurations and operational effects are substantially the same as those of the above-mentioned embodiment.

[0019]

As described above, according to the present invention, the lid is opened with the first cover for blocking the ordinary light and the second cover which is opened later than the first cover and allows the air to freely flow therethrough. When the lid is opened, the second cover holds the document until the first cover opens a certain amount, and then the second cover is lifted. The document is prevented from flying up and scattering due to air turbulence accompanying the opening operation.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a copying machine according to an exemplary embodiment of the present invention when a lid portion is opened.

FIG. 2 is a configuration diagram of the embodiment of FIG. 1 in a state in which a lid portion is closed.

FIG. 3 is a configuration diagram of the embodiment of FIG. 1 in a state where a lid portion is slightly opened.

FIG. 4 is a configuration diagram of the embodiment of FIG. 1 in a state where the lid portion is further opened.

FIG. 5 is a perspective view of an example of a second cover according to the present invention.

FIG. 6 is an explanatory view of a mounted state of a second cover according to the present invention.

FIG. 7 is a structural explanatory view of another embodiment of the present invention.

FIG. 8 is a structural explanatory view of still another embodiment of the present invention.

[Explanation of symbols]

 1: Main body 2: Original mounting surface 3: Original 5: First cover 6: Second cover 7: Frame 8: Original covering surface 9: Connecting material 12: Compression spring 25: Lid

Claims (4)

[Claims] 1. A copying machine comprising a main body having a document placing surface and a lid covering the upper surface of the main body, wherein the lid has a first cover for blocking light and a second cover for freely circulating air. A copying machine comprising a cover, and the second cover is separated from the document placing surface later than the first cover when the cover is opened. 2. The second cover is elastically pressed and held on the document placing surface until the opening of the first cover reaches a predetermined amount, and the opening of the first cover is fixed. 2. The copying machine according to claim 1, wherein the first cover and the second cover are connected to each other so that the second cover interlocks with the first cover and moves away from the original placement surface when the amount exceeds a certain amount. . 3. The copying machine according to claim 1, wherein when the lid is closed, a predetermined gap is formed between the second cover and the document placing surface. 4. The copying machine according to claim 3, wherein the second cover is made of a plurality of elongated members arranged in parallel in a fixed direction.