JPH02275426A - Document platen device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a document table device in a copying machine, document reading device, etc.

[Prior Art] In a conventional example aimed at preventing document skipping, as shown in Fig. 6, a part of the main body of the document platen reading device has a convex shape, and the gap between the document platen cover and the document platen cover is narrow. There are things.

[Problem to be Solved by the Invention] However, in a document table device in which the document reading device main body and the document table cover are detachable, there is a gap between the document reading device main body and the document table cover, which makes it difficult to open the document table. There was a drawback that the original would fall to the rear of the main body through the gap, making it difficult to retrieve the original.

In addition, when scanning an original larger than the original platen glass, the original platen cover is removed, but with the conventional shape shown in Figure 6, one side of the original will rise up when the original is made of a thick panel, making it difficult to read. Not only would the image be out of focus, but the document would also bend when it was brought into close contact with the platen glass, damaging the document, which was a fatal flaw for a document reading device.

[Means and effects for solving the problems] According to the present invention, the document reading device main body and the document table cover are detachable, and the document table cover has several protrusions on the hinge side as attachment parts to the device main body. This eliminates the gap between the document cover that occurs when opening the document cover, and prevents the document from falling to the rear of the device body.At the same time, since there are no protrusions on the device body, it also prevents the image of thick, large documents from becoming blurred. This made it possible to read manuscripts without causing any damage.

[Example] Figures 1 to 4 are diagrams showing the features of the present invention. In the figures, l is the main body of the document reading device, and 2 is a document platen cover 3 for holding the document, which is used to open and close the document platen. hinge,
Reference numeral 4 designates a document table glass, and 5 designates a mounting portion for fixing the document table cover 2 to the main body 1 of the apparatus. Figure 1 shows document platen cover 2.
FIG. Figure 2 tα) is a diagram showing the opening and closing of the document cover, and Figure 4 is a diagram showing the state in which the document cover 2 is removed from the main body l of the apparatus. Since there is no cover, it is possible to prevent the document from falling into the main body of the apparatus.

[Other Embodiments] FIG. 5 is a diagram with the document table cover removed from the main body, and clearly represents the features of the second embodiment. By providing the attachment part 5 of the document table cover to the document table not in a plate shape but with a gap wide enough to prevent the document from passing through, the strength of the main body side is increased and the same effect as in Example 1 can be obtained. .

[Effects of the Invention] As explained above, by eliminating the gap between the top and bottom of the apparatus main body l and the document platen cover 2, there is an effect of not only preventing the document from falling to the rear of the main body, but also preventing the document platen cover from being removed. This has the effect of preventing the document from being damaged and the image from becoming out of focus when reading large-format documents, which are indispensable.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example in which the present invention is applied to a document reading device, and FIG. 2 is a front view of the $1 diagram. Fig. 4 is a diagram showing an example when the document platen cover is removed from the main body of the document reading device, Fig. 5 is a diagram showing Embodiment 2 with the document platen cover removed, and Fig. 6 is an example of the current situation. Figure 7 is a left side view when the document platen cover shown in Figure 6 is removed and a large original is placed on it. The hinge 4 for the original platen glass 5 is the attachment part stone 20 for fixing the original platen cover 2 to the main body of the apparatus.

Claims (1)

[Claims] Prevents the document from falling by eliminating the gap between the top and bottom of the document platen cover and the document reader body that occurs when the document platen cover is opened in a document table device in which the document reader body and the document platen cover are removable. Document platen device.