JPH0576162U - Image reader - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a structurally simple and inexpensive original reading completion display structure. [Structure] Windows 3b and 7a through which light of a light-emitting body leaks out are provided in a housing 2 and a document holding plate 7 in correspondence with a document reading end position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an image reading apparatus used in a facsimile machine, a copying machine, or the like, and more particularly to a fixed original image reading apparatus in which a light emitting source side for irradiating an original moves.

[0002]

[Prior Art]

 In general, this type of fixed-type image reading apparatus has a structure in which the document is covered by the document holding plate during document reading, and it is not known whether or not the document reading is completed. Without knowing, even if the reading of the original is finished, the original is left as it is, spending extra time, and conversely opening the original holding plate before the end of reading, external light enters the device. As a result, reading failure may occur. Therefore, in the past, in order to prevent these, the reading position of the document is detected and a plurality of LEDs are sequentially turned on, or a bar graph is displayed on the display screen of the LCD so that the light emission source The position was notified and the completion of reading the document was displayed.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional document reading end display structure, a detecting means for detecting the position of the moving light source, a control means for displaying on the LED or LCD by this detecting means, and a display means for the LED or LCD. However, there is a drawback that the structure becomes complicated and the cost increases.

Therefore, the present invention has been made in view of the above-mentioned conventional drawbacks, and an object thereof is to provide an original reading completion display structure which is structurally simple and inexpensive. An object is to provide an image reading device.

[0005]

In order to achieve this object, in an image reading apparatus according to the present invention, a document placed on a document reading surface of a casing is covered with a document pressing plate and disposed in the casing. An image reading apparatus in which a light emitting source moves along an original, and the reflected light emitted from the light emitting source to the original and reflected by the original is converted into image information by a photoelectric conversion element. The window is shifted earlier than the irradiation end position, and a window through which the light from the light emitting source leaks is provided at least in the housing corresponding to the movement end position. The image reading apparatus according to the present invention has a window covered with a magic mirror.

[0006]

[Action]

 In the present invention, when the light emitting source reaches the movement end position, the light of the light emitting source leaks from the window.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is an overall perspective view of an image reading apparatus according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a sectional view taken along line III-III of FIG. In these figures, an image reading apparatus 1 includes a box-shaped housing 2, a rectangular window 3a is formed in a substantially central portion of an upper surface portion 3 of the housing 2, and a window 3a is provided behind the window 3a. A small window 3b is formed on an extension of the center line in the front-rear direction, and an operation section, which is a switch for starting image reading of the image reading apparatus 1, is provided at the front edge of the upper surface section 3. An original pressing plate 7 is rotatably supported by a hinge (not shown) at a rear portion of the upper surface portion 3 of the upper surface portion 3, and is covered on the upper surface portion 3 as shown in FIG. A document pressing portion 8 that fits into the window 3a is provided on the back surface of the document pressing plate 7, and a window 7a is formed in the rear portion at a position matching the window 3b.

A magic mirror 12 that covers the window 3a is provided at the lower end of the window 3a of the housing 2. The magic mirror 12 extends to the lower end of the window 3b and also covers the window 3b. .. Inside the housing 2, a light emitting body 15 which is a light emitting source is arranged in the vicinity of the window 3a, and the light emitting body 15 is a pair of moving mechanisms arranged on both sides inside the housing 2. 16, 16 is movable in the front-rear direction of the apparatus 1 and irradiates the entire document 10 placed on the magic mirror 12 of the window 3a, and the rear end position moves to the position of irradiating the window 3b. To do. The light L emitted from the light emitter 15 to the original 10 is reflected by the three reflecting mirrors 17 that move integrally with the light emitter 15, is focused by the focusing lens 18, is received by the photoelectric conversion element 19, and is imaged. Converted to information.

In such a configuration, when the operator operates the operation unit 5 to start reading an image of the document 10, the light emitter 15 is moved by the moving mechanism 16 from the front side to the rear side, Even when irradiation of the original 10 is started and irradiation of the entire original 10 is finished, the original 10 is further moved and reaches the position of the window 3b. At this time, the light of the light emitter 15 passes through the magic mirror 12 and the window 3b and leaks from the window 7a. Therefore, the operator can confirm that the irradiation of the entire document 10 by the light emitter 15 is completed, immediately open the document pressing plate 7, replace the document 10 with the next document, and read the next image. This makes it possible to eliminate the waste of time for exchanging the original document and prevent the document pressing plate 7 from being opened accidentally during the image reading, so that the image reading failure does not occur. Further, since the magic mirror 12 is covered not only with the window 3a but also with the window 3b, external light does not enter the inside of the apparatus 1 through these windows 3a and 3b, and the image reading failure is prevented.

FIG. 4 is a plan view showing a second embodiment of the present invention, and FIG. 5 is a sectional view taken along line VV of FIG. The feature of the second embodiment is that a pair of windows 3c for leaking the light of the light-emitting body 15 to the outside are provided on both sides of the upper surface portion 3, and from the portion where the document holding plate 7 is arranged in plan view. It is characterized in that it is provided in a deviated position. With such a configuration, it is not necessary to provide a window for leakage on the document pressing plate 7, and the light leaking from the window 3c becomes a pair, so that it is possible to confirm more reliably.

In this embodiment, the image reading apparatus is shown in which the moving end position of the light emitter 15 is constant irrespective of the size of the original document 10. It can also be applied to an image reading apparatus of a type having a moving end that matches the size. In that case, a plurality of windows 3b are provided in accordance with the size of the document, so that the same as in the above-described embodiment. Of course, the action and effect can be obtained.

[0012]

[Effect of the device]

 As described above, according to the present invention, the movement end position of the light emitting source is shifted before the irradiation end position of the document, and a window through which the light of the light emitting source leaks to at least the housing corresponding to the movement end position. Since it is provided, it can be confirmed that the light from the light emitter leaks out from the through hole when the entire original is completely illuminated, which makes it possible to confirm that the reading of the original has been completed. It is possible to prevent the document pressing plate from being opened during the reading to cause a document reading failure, and it is possible to prepare for the reading of the next document and save time. In addition, since the window is covered by the magic mirror, external light does not enter the inside of the device through the window, and therefore, image reading failure does not occur.

[Brief description of drawings]

1A and 1B show an image reading apparatus according to the present invention, FIG. 1A is an overall perspective view of an original pressing plate opened, and FIG. 1B is an overall perspective view of an original pressing plate closed.

FIG. 2 is a plan view of an image reading apparatus according to the present invention.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view of a second embodiment of the image reading device according to the present invention.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

 1 Image Reading Device 3a Window 3b Window 3c Window 7 Original Holding Plate 7c Window 10 Original 12 Magic Mirror 15 Light Emitting Element 19 Photoelectric Conversion Element

Claims (2)

[Scope of utility model registration request] 1. A reflection which is obtained by covering a document placed on a document reading surface of a casing with a document pressing plate, a light emitting source disposed in the casing moving along the document, and irradiating and reflecting the document from the light emitting source. In an image reading apparatus for converting light into image information by a photoelectric conversion element, a moving end position of the light emitting source is shifted before an irradiation end position of a document, and the light emitting source is at least in a housing corresponding to the moving end position. The image reading device is provided with a window through which the light leaks. 2. The image reading apparatus according to claim 1,
An image reading device characterized in that the window is covered with a magic mirror.