JPS6125357A - Reader - Google Patents

Abstract

PURPOSE:To simplify the constitution of a reader by constituting the platen section with the 1st platen section on which an original is placed and the 2nd platen section above which a roller is provided so as to use an image sensor to read a roll original and sheet originals continuously. CONSTITUTION:The platen section of the reader consists of the 1st platen 2 on which the roll original 1 is placed and the 2nd platen 5 on which rollers 3, 4 are provided. Further, an original platen 7 mounting sheet originals 6 is provided to the upper right of the reader and the originals 6 are carried into the reader one by one sheet by an automatic original carrying device ADF12 comprising rollers 8-10 and a belt 11. After the original 6 is carried to the platen 5 by the rollers 3, 4, it is discharged onto the platen 2. Then one image sensor 13 is moved in parallel along a guide 14 to read the original 1 on the platen 2 and the sensor is moved under the platen 5 when the original 6 is read and the original is read at a prescribed position to simplify the constitution of the reader.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a document reading device used in facsimile machines, digital copying machines, and the like.

[Conventional technology]

Conventionally, the document reading systems of facsimile machines and the like are: (1) An automatic document feed mechanism loads the documents on a document tray and brings them into the device one by one, and scans the document plane using an image sensor such as a CCD.

(2) By scanning an optical system such as an image sensor or a mirror under the platen in parallel, it is possible to read both sides of a document placed on the platen, and it is also possible to read two books, two pieces of hardware, etc.

limited to one of them.

[Problem that the invention seeks to solve]

However, with the method (1) above, it is impossible to directly read books or T-compounds, and with the method (2) above, it is impossible to read multiple manuscripts continuously at high speed. There are problems, and there has been no conventional device that suitably combines both of these functions into the same device.

[Means for solving problems]

In the reading device of the present invention, the platen is divided into two areas, a first platen part for reading stationary originals and a second platen part for reading moving originals, and an original platen for stacking sheet-like originals. a document conveyance mechanism that automatically conveys documents one by one from the document tray and discharges the conveyed documents to the first platen section via the second grating section; and a document reading means for reading the document under the second platen.

[Effect]

In a first mode for reading a stationary original, the original is placed on the first platen, and the original reading means is set in the first mode.
In a second mode in which a moving document is scanned in parallel under the second platen, the document reading means is fixed under the second platen and the document conveying mechanism is driven to scan the document on the document table. 2 in order
A stationary original and a moving original can be read by conveying the original over the platen of the original. According to such a configuration,
With one document reading means, continuous and high-speed reading of a plurality of sheet documents, in addition to a document such as an agreed-upon document, can be realized.

〔Example〕

FIG. 1 is a sectional view of a device showing an embodiment of the present invention.

In this example device, the platen section is used to store documents (books).

It consists of a first platen 2 for placing 1 (including 1 mixture, etc.) and a second platen 5 on which rollers 3 and 4 are provided. On the other hand, in the upper right part of the apparatus, there is provided a document stand 7 for stacking a plurality of sheet-like originals 6, and the six document rollers 8, 9, .
Automatic document feeder consisting of 10 and belt 11! (hereinafter referred to as ADF (Auto Document Feeder)
) 12 into the apparatus, conveyed over the second platen by rows 24 and 5, and then discharged onto the first grating 2. Image sensor 1
It is a long solid-state image sensor composed of three digits, such as a CCD, and reads and scans the original on the first platen 2 by moving in parallel along the guide 14 in close contact with the bottom of the first platen 2. At the same time, the original 6 on the original table 7
When reading, it moves below the second platen 5 and is then fixed at a predetermined position.

A specific example of the operation of such a configuration will be described in detail.

First, a document 1 such as a book is placed on the first platen 2.
When reading, the image sensor 13 reads the original image on the second platen 2 by moving in parallel below the platen 2 along the guide 14 from a predetermined initial position shown by a solid line in FIG. However, in this reading mode, the second platen 5 is not tilted as shown in FIG. 1, but is located on the same plane as the first platen 2.

Next, when continuously reading the sheet-like original 6 on the original table 7,
As shown in FIG.
It rotates using the fulcrum as a fulcrum, and stops after tilting at a predetermined angle.

This is because by providing a step between the first grating 2 and the second platen 5, the originals 6 after being ejected can be stacked properly on the first platen 2. The image sensor 13 moves in parallel under the platen along the guide 14 from a predetermined initial position and stops at a predetermined position below the platen 5 of the rear cylinder 2. In this state, the cam 17 is rotated, and the image sensor 13 is rotated about the shaft 18, and then, as shown in FIG. It will stop in the same state. After these operations are completed, the ADF 12 is started and the sheet originals 6 on the original table 7 are sequentially carried into the apparatus one by one. When the sheet original 6 is conveyed over the second platen 5 by the rollers 4 and 3, the image of the sheet original 6 is read by the image sensor 13, and the sheet original 6 is then conveyed over the second platen 5.
is discharged onto the first platen 2.

As described above, according to this embodiment, in addition to reading the approved items on the platen, it is possible to realize automatic continuous reading of sheet-like originals using the image sensor of the ego.

In the above embodiment, the lever 15 rotates the 207' latin 5 about the shaft 16, and thereby the second
Although the stackability is improved by tilting the platen 5, the mechanism for tilting is not limited to the one shown in the above embodiment, and may be realized as appropriate using well-known technology. good.

Furthermore, in order to improve the stability, it is not necessarily necessary to tilt the second platen 5 as in the embodiment, and the point is that at least the end of the second platen 5 on the first platen 2 side It suffices if it is located above the platen 2 of No. 1.

Furthermore, the image sensor 3 is connected to the second! Of course, the structure for ensuring close contact under the latin 5, the structure and arrangement position of the ADF 12, etc. are arbitrary.

Incidentally, in the above embodiment, a long image sensor was used to simplify the document reading mechanism, but the document reading mechanism was configured with a CCD and a normal optical system consisting of mirrors, lenses, etc. You can.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to read a single object on a platen and to automatically and continuously read a sheet-like original using a single image sensor. The device can be provided, thereby improving office efficiency.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view showing a partially inclined platen. 1...Collated manuscript, 2, 5...Platen, 3, 4, 8
゜9.10...Roller, 6...Sheet original, 7...
・Document stand, 11...Belt, 12...ADF, 1
3... Image sensor, 14... Guide, 15...
・Lever, 16, 18... shaft, 17... cam.

Claims (2)

[Claims] (1) A first platen section for reading stationary originals, a second platen section for reading moving originals, a document stand for stacking sheet-like originals, and a flow from the document stand to the second platen section. a document conveying mechanism that automatically feeds documents one by one; and a second mode that moves in parallel under the first platen in a first mode for reading stationary documents and reads moving documents.
A reading device comprising: a document reading means fixed under the second platen to read the document in the mode. (2) The reading device according to claim 1, wherein in the second mode, the second platen section is located above the first platen section.