JPS63316035A - Cover mechanism for original platen - Google Patents

Abstract

PURPOSE:To bend a cover and to cover an original adjusting to the shape of the upper surface of the original even if the original is a thick one such as an open type book by constituting the cover in such a way that it can be bent nearly in the center. CONSTITUTION:The titled mechanism provides the plate-shaped cover 3 covering an original platen and one end of the cover 3 and a device main body are linked freely rockably by a hinge 4. Bendable parts 3a and 3b parallel with a rocking axis by the hinge 4 are formed nearly in the center of the cover 3 and leading edge side from the bendable parts 3a and 3b is made to freely rock independently of the link part with the device main body 2. Namely, the bendable parts 3a and 3b are formed by thinning the thickness of the cover 3 made of synthetic resins in a V-shape and they can be bent independently. Thus, the cover can uniformly cover the entire original not only in the case of thin paper original but also in the case of thick original such as a book, etc.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a cover mechanism of a document table for covering a document placed on a document A in an image processing apparatus such as an image scanner or a copying machine. Regarding.

(Conventional technology) Conventionally, the cover mechanism of this type of document table is as follows: 1. A plate-shaped cover made of, for example, synthetic resin is swingably supported on the main body of the apparatus by a sheep, and the document is placed between the cover F surface and the document resting section (original plate) of the main body. stand)
Is the original placed between the cover and the original? It is configured to press one part to make it dense 71.

Image scanners and copiers usually accept thin originals (
Since the device processes sheets of paper one by one, the swinging wheel is set at approximately the same height as the document storage area, and the entire bottom surface of the cover is placed approximately at the document storage area when the cover is closed. When in use, the manuscript is pressed against the draft machine holder to bring it into close contact.

(Problems with the prior art) However, as in the conventional structure described in Section F, in which a plate-like cover is swingably supported around a single swing axis in accordance with the cut paper manuscript, it is difficult to use a structure in which a two-page spread of books, etc. If a J-type object is sandwiched between the cover and document A1, as in the case of image processing using It was necessary to perform image processing using

As a result, it is not possible to press the original onto the original placing section with uniform pressure. (There was a problem in that good image processing could not be performed due to insufficient or insufficient density of the document placed on the document holder.

(Object of the Invention) In view of the above-mentioned circumstances, the present invention provides a cover mechanism for a manuscript table that can uniformly cover the entire manuscript not only for thin paper manuscripts but also for thick manuscripts such as letters. That purpose.

(Means for Solving the Problems) A cover mechanism for a document table according to the present invention has a plate-shaped cover that covers the document table, and one end of the cover and the main body of the device are swingably connected by a hinge. , a bendable part parallel to the swing axis is formed by a hinge in the approximate center of the cover, and the tip side of the bendable part can swing freely independently of the connection part with the main body of the cover. This is how it is structured.

(Embodiment of Issuing 1) Hereinafter, an embodiment of Issuing II will be explained 1!1 based on the drawings.

FIG. 1 shows an image processing apparatus 1 to which an embodiment of the present invention (cover mechanism for a manuscript table) is applied, and FIG. 2 is an enlarged perspective view of the cover 3 in an open state.

The image processing device 211 has a base end portion of a cover 3 made of synthetic resin integrally formed with the main body 2 and is swingable by a pair of hinges 4, and the cover 3 is attached to the main body 2. The cover 3 covers the document placement section 10 provided therein, and is configured such that the document is sandwiched between the cover 3 and the document placement section 10 during image processing.

The cover 3 includes two bent portions 3a and 3b at its center. kr, music section 3a.

3b is curved h11 parallel to the swing axis of the hinge 4, and is disposed close to the center of the cover 3 (for example, with a mutual spacing of about 3C layers).

The bent portions 3a and 3b are arranged so that the thickness of the cover 3 made of synthetic resin is V.
It is formed by making an i-shape, and each can be bent independently.

The hinge 4 includes a first hinge 5 bent on the side near the base end of the cover 3 as shown in the third diagram, and a second hinge 7 connected in parallel to the first hinge 5 via a plate-shaped portion 6. It is made up of. The first hinge 5 and the second hinge 7, like the bending parts 3a and 3b, are made of a resin material and are formed into a V-shape with a thickness of 8 mm so that they can be bent freely.

The fixed end 8 of the second hinge 7 (opposite side of the first hinge 5) is 1
It is fitted into and supported by fixing holes 9 provided on two sides of the housing of the main body 2. That is, the thickened portion (or wedge-shaped ff&) 8 that can be elastically deformed to pass through the fixing hole 9
A is provided on the fixed end 8, and the thickened portion 8a is elastically deformed while passing through the fixing hole 9, and the thickened portion (or stalk-shaped portion) 8a is formed at the inner opening edge of the fixed hole 9. By being locked, the cover 3 is swingably supported by the first hinge 5 and the second hinge 7 relative to the main body 2.

First, a recess 6a is provided on one side of the plate-like portion 6, and
The main body 2 is provided with protrusions 2a so that the four parts 6a are swung and fitted together by the second hinge 7. Part 4 6a above
and the protrusion 2a are such that the base plate 8 is unraveled (as shown in the fourth figure) when a tensile load greater than a set value is applied, that is, when the four parts 6a and the protrusion 2a are fitted together. Swinging of the second hinge 7 is prohibited.

In state fB, where the recess 1116a and the protrusion 2a are fitted together and the upward movement of the second hinge 7 is prohibited, the first hinge 5 allows the cover 3 to pivot around the pivot axis close to the fourth surface of the main body 2. When the second hinge 7 is allowed to swing as the fourth part 6a and the protrusion 2a are disengaged and the second hinge 7 is allowed to swing, the cover 3 swings around the swing axis at a position farther from the main body 2. .

According to the hinge 4 configured as described in -1-, when performing portrait processing on a paper document, the fourth part 6a and the protruding part 2a are fitted together and the second hinge 7 is prevented from swinging. When the cover 3 is swung by the hinge 5 and close to the second surface of the main body 2, the cover 3 is moved to the document aa! i part 10 ra
Use it as you like.

Also, write! When performing image processing on a T-thick document, when the cover 3 is swung around the swing axis by the first hinge 5 with the thick document placed on the document holder 1O, the cover 3 is shaped like a fan. When the base end of the F surface of the cover 3 is pressed against the upper edge of the thick document in the opened state, a load is generated that pushes the base end of the cover 3 upward, and this causes the contact between the recess 6a and the protrusion 2a. Fitting form! 6 is released and the second hinge 7 is allowed to swing, the swing axis of the cover 3 moves away from the main body, so that a thick original is sandwiched between the cover 3 and the main body 2. It is configured.

In other words, when performing image processing on a normal paper document, the second
When the hinge 7 is prohibited from swinging and the cover 3 is supported freely only by the first hinge 5, and a thick original is image-processed, the second hinge 7 is allowed to swing. 1st. The cover 3 is freely supported by the two connected second hinges 5 and 7, and the swing axis of the cover 3 is moved away from the main body side in accordance with thick originals.

Furthermore, as described above, the cover 3 is configured according to the present invention.
Bent parts 3a and 3b are provided in the center part 1. For example, when performing image processing on a book with two pages, the hinge 4 acts as described above to move the swing axis of the base end of the cover 3 toward the main body 2 side. At the same time as moving it away from the original at part 10, align it with the mountain shape with the spine of the double-page spread book placed face down on the manuscript at part 10 as the apex.
, 3b are bent so that the cover 3 covers the entire top surface of the book.

That is, if the cover 3 does not have the curved parts 3a and 3b, the cover 3 may open in a fan shape along the sloped surface on one side of the double-page book, or the cover 3 may be supported by the spine of the double-page book. However, as in this embodiment, the bent portion 3a cannot cover the entire double-page spread book as a manuscript.

By providing the cover 3b, the cover 3 can be bent to match the irregularities of the original to cover the original.

Furthermore, since the central part of the cover 3 is bent, when a small original does not require the use of the entire document placement section 10, only the tip side of the cover 3 from the bent parts 3a and 3b can be swung. It is also possible to place the original on the original placing section 10 by using the following steps.

In this embodiment, two bent portions 3a and 3b are provided, but it goes without saying that there may be one bent portion or three or more bent portions.

Furthermore, in the drawing of one practical example (Figure:jS1), it is a so-called horizontal device in which the operation surface of one image processing device is provided on the longitudinal side (long side), and the cover and device are attached on the short side. 4IIJk is designed to be connected by a hinge, but it is of course suitable for application to a vertical device, that is, a device in which an operation surface is formed on the side surface of the short side of the device. The cover can be opened and closed easily from the operation side of the device (that is, since the tip of the cover is open without having to lift it upwards, fewer operations are required for opening and closing).

(Effects of the Invention) According to the cover mechanism of the document table according to the present invention, since the cover is configured to be bendable approximately at the center, even if the document is a thick document such as a double-page spread book, it can be adjusted to fit the L-side shape of the document. It can be bent and covered.

As a result, it is possible to press the original evenly, and the surface of the original can be brought into close contact with the original A placement area.
: [It is possible to completely shield parts other than the manuscript surface,
This enables good image processing.

[Brief explanation of drawings]

- Fig. 1 is a perspective view of an embodiment of the cover mechanism of the document table related to unreleased 111, and Fig. 2 shows the state 7 with the cover shown in Fig. 1 open! 3 and 4 are partially enlarged perspective views showing a cross section [4] of the hinge portion in the embodiment. 1... Image processing device 2... Main body (device main body) 3.
...Cover 3a, 3b...Bending part (bending iTr function part) 4...Hinge

Claims (1)

[Scope of Claims] It has a plate-shaped cover that covers the original platen, one end of the cover and the main body of the apparatus are swingably connected by a hinge, and there is a plate-shaped cover approximately in the center of the cover that is parallel to the swing axis of the hinge. 1. A cover mechanism for a document table, characterized in that a bendable part is formed, and a distal end side of the bendable part is configured to be swingable independently of a connecting part to an apparatus main body.