JPH06258725A - Image reader - Google Patents

Abstract

PURPOSE:To specify the part of an original which is to be read from the rear of the original and to read the specified part of the original. CONSTITUTION:By a original irradiating lamp part 3, the original placed with its back surface upward irradiated from below, and content written in the original is projected through from the back. An operator confirms the content written in the original placed with its back surface upward in order to be read without moving the original. The operator sets the read range of the original by a read range setting means 4 positioned and attached so as to freely slide in a subscanning direction. The range detection part 7 is positioned at the edge of an optical read unit part 6 and detects the read range set by the setting means 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus, and more particularly to designation of an original reading range of a facsimile machine or a copying machine.

[0002]

2. Description of the Related Art Facsimile machines and copying machines have come into widespread use, but it is often the case that it is desired to copy only a part of the information described in a document for editing a document or the like.

In a conventional facsimile apparatus or copying machine, when copying a part of the information described in the original, only the necessary portion is cut out from the original and attached to a desired position on a blank sheet to separately copy the original. I created and copied this new manuscript. On the other hand, in the copying apparatus disclosed in Japanese Unexamined Patent Publication No. 4-7967, the information recorded in the original is marked by marking the original so as not to read within the marked range. Only part of the image can be copied.

[0004]

However, in the copying machine disclosed in Japanese Patent Laid-Open No. 4-7967, the surface of the original must be marked, and some originals cannot be marked by themselves. Therefore, I had to take a separate copy and mark it, which was troublesome.

The present invention has been made in order to eliminate such disadvantages. By illuminating a document with a document illuminating lamp, a part to be read of the document is specified, and the document of the specified part is read. An object of the present invention is to obtain an image reading device capable of copying only a part of the information described in a document.

[0006]

SUMMARY OF THE INVENTION An image reading apparatus according to the present invention is a document irradiation lamp which illuminates a document placed with its back side facing up from the bottom so that the content written on the document is watermarked from the back side. Parts.

Further, it has a reading range setting means and a range detecting part, the reading range setting means is slidably positioned in the sub-scanning direction to set a reading range of the original, and the range detecting part is the tip of the optical reading unit part. The reading range set by the reading range setting means is detected.

[0008]

In the present invention, since the original placed on the back side is illuminated from the bottom to illuminate the original from the bottom, the original illumination lamp section for watermarking the contents written on the original from the back side is provided. You can check the contents written on the original placed without moving the original.

Further, it has a reading range setting means and a range detecting section, and the reading range setting means is slidably positioned in the sub-scanning direction to set the reading range of the original. The range detecting section is the tip of the optical reading unit section. Since the reading range set by the reading range setting means is detected, only the necessary portion of the document can be designated.

[0010]

1 is a block diagram showing an embodiment of the present invention. As shown in the figure, the image reading apparatus includes a main control unit 1, a document irradiation lamp control unit 2, a document irradiation lamp unit 3, an optical reading unit control unit 4, an optical reading unit unit 5, a range detection unit 6, and a reading range setting unit. 7, a storage unit 8, a scan display unit 9, and a pressure plate opening / closing detection sensor 10.

The main controller 1 controls the entire system.
The irradiation lamp control unit 2 turns on or off the original irradiation lamp unit 3 according to an input from the operation display unit 8. As shown in the perspective view of FIG. 2 and the cross-sectional view of FIG. 3, the document irradiation lamp section 3 is positioned so as not to affect the scanning of the optical reading unit section 5, and is placed on the contact glass 11 with its back surface facing upward. The original 12 is illuminated from below the contact glass 11 so that the contents of the original 12 can be seen through and can be confirmed from the back side. The reading range setting means 4 has, for example, pointing pieces 4a and 4b as shown in FIG. Is bent in an L shape, and the reading range is specified by its position. The optical reading unit controller 5 controls the optical reading unit 6 when the range detector 7 detects the indicating pieces 4a and 4b, and starts or stops reading the original 12. Optical reading unit section 6
Is located under the contact glass 11, illuminates the original 12 through the contact glass 11, and reads the original 12 by the reflected light. The range detection unit 7 has a sensor such as a photo sensor or a magnet sensor, is located at the tip of the optical reading unit unit 6, moves with the optical reading unit unit 6, and has an L-shaped lower portion of the pointing pieces 4a and 4b. The position of the pointing piece portions 4a and 4b is detected by detecting. The storage unit 8 stores the image information and the like read by the optical reading unit unit 6. The operation display unit 9 instructs the document irradiation lamp unit 2 to irradiate the document 12 or reads the document 12. The pressure plate opening / closing detection sensor 10 is a document 12
The opening / closing of the pressure plate 13 that holds the document 12 at the time of reading is detected.

Next, the operation of setting the reading range of the original 12 by the image reading apparatus will be described with reference to the sectional view of FIG. 3 and the flowchart of FIG.

The operator instructs partial printing from the operation display unit 9 (step S1), opens the pressure plate 13 and sets the original 12 on the contact glass 11 with the back side facing up, and then the operator of the operation display unit 9 starts. Press the key (step S
2) The irradiation lamp control unit 2 turns on the original irradiation lamp unit 3 located under the contact glass 11 and starts irradiation of the original 12 on the contact glass 11 (step S).
3). By irradiating the original 12 with the original irradiation lamp section 3, the contents of the original 12 can be seen through, and the contents of the original 12 can be confirmed without changing the operator. The operator is the manuscript 12
Check the contents of, and check the reading range of the original 12.
After confirming the range, move the pointing pieces 4a and 4b to the sub-scanning direction Y.
Then, the reading range of the original 12 is set (step S4). When the pressure plate 13 is closed after the reading range of the original 12 is set and the pressure plate opening / closing detection sensor 10 detects that the pressure plate 13 is closed (step S5), the irradiation lamp control unit 2 turns off the original irradiation lamp unit 3 ( Step S6). As a result, the operator can check the contents of the original 12 while setting the original 12 on the contact glass 11 and set the reading range.

Next, the operation of the image reading apparatus for reading the designated area of the original 12 will be described with reference to the process chart of FIG. 4 and the flowchart of FIG.

When the start key of the operation display section 9 is pushed down (step S11), the optical reading unit control section 5 is operated as shown in FIG.
The operation of the optical reading unit section 6 is started from the position shown in (a) (step S12). As shown in FIG. 4 (b),
When the optical reading unit section 6 moves in the sub-scanning direction Y and reaches the first pointing piece section 4a, it is located at the tip of the optical reading unit section 6 and moves together with the optical reading unit section 6 in the sub-scanning direction Y. 7 detects the pointing piece 4a (step S13). Upon the first detection of the pointing piece 4a, the optical reading unit controller 5 turns on the optical reading unit 6 (step S14), and starts reading the original 12 set on the contact glass 11 (step S1).
5). The information of the document 12 read by the optical reading unit section 6 is stored in the storage section 8. The optical reading unit 6 moves in the sub-scanning direction Y while reading the original 12,
When reaching the position of (c), the range detecting unit 7 detects the next pointing piece 4b (step S16). The optical reading unit controller 5 detects the reading range Z by detecting the pointing piece 4b.
Is determined to have ended, the optical reading unit section 6 is turned off (step S17), and the reading is stopped (step S).
18). As a result, only the range of the original 12 surrounded by the indicating pieces 4a and 4b is read, and only the range of the original 12 designated by the operator is copied or facsimile-transmitted.

When there are a plurality of pairs of the indicator pieces 4a and 4b, the same operation may be repeated within the operating range of the optical reading unit section 6.

If there are a plurality of pairs of the instruction piece portions 4a and 4b, the outside of the reading range may be skipped, the read ranges may be connected, and the information on the original 12 may be combined.

In the above-described embodiment, the reading within the range surrounded by the pointing piece portions 4a and 4b is performed, but the pointing piece portions 4a and 4b are read.
The area surrounded by 4b can be set as a read prohibited area, or
You may make it a soft-zone area.

[0019]

As described above, according to the present invention, by irradiating a document placed with its back side facing up from below,
Since the contents written on the original are transparent from the back, you can check the contents written on the original placed for reading without moving the original, and you can check the range of the reading without moving the original. Designation can be done easily and quickly.

Further, since the reading range of the original is set and the set reading range is detected, only necessary information can be read and only a specific portion of the original can be read easily and quickly. As a result, only the image information desired to be output can be copied or sent by facsimile.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view of an embodiment of the present invention.

FIG. 3 is a sectional view of an embodiment of the present invention.

FIG. 4 is a process drawing.

FIG. 5 is a flowchart for setting a reading position.

FIG. 6 is a flowchart of a reading operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main control section 2 Original irradiation lamp control section 3 Original irradiation lamp section 4 Reading range setting means 4a, 4b Pointing piece section 5 Optical reading unit control section 6 Optical reading unit section 7 Range detection section 8 Storage section 9 Operation display section 10 Pressure plate Open / close detection sensor

Claims (2)

[Claims] 1. An image reading apparatus comprising an original irradiating lamp section for illuminating an original placed with its back side facing up from the bottom so that the content written on the original is watermarked from the back side. 2. A reading range setting unit and a range detection unit are provided,
The reading range setting means is slidably mounted in the sub-scanning direction to set the reading range of the document, and the range detecting section is located at the tip of the optical reading unit section and detects the reading range set by the reading range setting means. 1. The image reading device described in 1.