JPS63107366A - Reader - Google Patents

Abstract

PURPOSE:To clearly read an image in the vicinity of a part of an original close to its binding margin part in making a book by moving a detector part in a plane perpendicular to the main scanning direction of a sensor, and making the part rotatable around the axis in the main scanning direction. CONSTITUTION:A pair of distance sensors 19 mounted on the detector part 1 respectively measure distances to an original. The inclination of the part 1 against the surface of the original is measured, and the rotating axis 2 is rotated by a motor 3 through a transmission belt 4, to control the detector part 1 to be perpendicular to the surface of the original. By using focus signals, the distance from the line image sensor 13 to the surface of the original is controlled. Consequently, image of the original formed by a lens 14 can be read successively.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a reading device for reading manuscripts and the like.

2. Description of the Related Art In recent years, reading devices have been widely used for purposes such as copying, editing, and storing manuscripts.

An example of the above-mentioned conventional reading device will be described below with reference to the drawings.

3 and 4 are a schematic explanatory diagram of a conventional reading device and a sectional view of a detection section. In Fig. 3, reference numeral 1 denotes a detection section with a built-in line image sensor, and 17 and 18 indicate guide rods and drive wires for driving the detection section 1 in the sub-scanning direction of the line image sensor (the drive motor is not shown). figure)
It is. Also, 11 and 12 are the manuscript table and manuscript (book) respectively.
It is.

In FIG. 4, a line image sensor 114 is a lens for forming an image of the document surface on the line image sensor 13, and 15 and 16 are a lamp and a reflecting mirror for illuminating the document surface, respectively. In FIGS. 3 and 4, X is the sub-scanning direction of the line image sensor 13, and y is the main scanning direction.

The operation of the reading device configured as described above will be explained below.

First, in order to read a document such as a book, the document 12 is placed face down on the document table 11. Thereafter, in response to a reading start command, the lamp 15 of the detection unit 1 is turned on and moved in the X direction (sub-scanning direction) along the guide rod 17 by the drive wire 18. At this time, the original image formed by the lens 14 is read by sequentially scanning the line image sensor 13 in the y direction (main scanning) at an appropriate timing.

Problems to be Solved by the Invention However, with the above configuration, if the manuscript is bound into a book, the binding margin (center) cannot be clearly read, or if the manuscript is to be read continuously, it may be difficult to read the book in order to turn the pages. There was a problem in that it had to be moved each time.

In view of the above-mentioned problems, the present invention provides a reading device that can clearly read the binding margins of bound manuscripts, etc., and can read the books without moving the book each time when reading the books continuously.

Means for Solving the Problems In order to solve the above problems, the reading device of the present invention includes a detection section having a sequential scanning sensor that converts image information into an electrical signal, and a detection section that holds the detection section in space. and a drive unit capable of moving the detection unit within a plane perpendicular to the main scanning direction of the sensor and rotating the detection unit around an axis in the main scanning direction.

Effects of the present invention With the above-described configuration, the detection unit can be moved along the surface of the book manuscript, so the binding margins of bound manuscripts can be read clearly, and the book can be placed face up even when reading continuously. This makes it possible to read the book without having to move it each time.

Embodiment Below, a reading device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic explanatory diagram of a reading device in an embodiment of the present invention. In FIG. 1, 1 is a detection section, 2 is a detection section 1
3.4 is a motor and transmission belt for rotating the detection unit 1 around the rotation axis 2; 5 is a holder for moving the detection unit 1 in the vertical direction; , 6 and 7 are guide shafts and drive screws (driving source not shown) for guiding and driving the holder 5, 8 is a holder for driving the detection unit 1 in the horizontal direction, and 9 and 10 are for driving the holder 8. A guide shaft for guiding and driving, a driving screw (the driving source is not shown), 11 and 12 are an original platen and an original, respectively. In Figure 6, where 2 to 10 are collectively referred to as the drive unit 20, X is the moving direction of the holder 8, y is the main scanning direction of the line image sensor 13 (Fig. 3) built in the detection unit 1, and 2 is the holder. The direction of movement is 5. FIG. 2 is a sectional view of the detection section 1.

In FIG. 2, a line image sensor 214 is a lens for forming an image of the document surface on the line image sensor 13, and 15 and 16 are a lamp and a reflecting mirror for illuminating the document surface, respectively. A pair of distance sensors 19 are provided symmetrically with respect to the line image sensor 13 and the lens 14, which detect the distance between the detection unit 1 and the document surface.

The operation of the reading device configured as described above will be described below with reference to FIGS. 1 and 2.

When a book is placed as a document 12 as shown in FIG. 1, a pair of distance sensors 19 attached to the detection unit 1 each measure the distance to the document surface.

The distance from the detection unit 1 to the document surface can be measured by finding the average value of both signals (called the focus signal), and the distance from the detection unit 1 to the document surface can be measured by finding the difference between the two signals (called the tilt signal). The inclination of the image relative to the original surface can be measured. Using this tilt signal, the rotation shaft 2 is rotated by the motor 3 via the transmission belt 4, and the detection unit 1 can be controlled perpendicular to the document surface. In addition, by turning the drive screw 7 using the focus signal, the holder 5 is moved up and down along the guide shaft 6, and the line image sensor of the detection unit l is moved up and down along the guide shaft 6.
13 to the document surface can be controlled. Therefore, while performing the above-mentioned tilt control and focus control according to the reading start command, the detecting unit 1 detects the tangential direction of the document surface.
By controlling the speed in the sub-scanning direction, the document imaged by the lens 14 can be sequentially read by sequentially scanning the line image sensor 13 in the main-scanning direction at appropriate timings. At this time, if the three drive units are appropriately controlled based on their mechanical configurations, the above-mentioned tilt control, focus control, and sub-scanning direction speed control can be achieved simultaneously.

As described above, according to the present embodiment, there is provided a detection unit having a sequential scanning sensor that converts image information into an electrical signal, and a detection unit that holds the detection unit in space and is perpendicular to the main scanning direction of the sensor. By including a drive unit that can move the detection unit within the plane and rotate the detection unit around an axis in the main scanning direction, the binding margin can be clearly read even when the original is bound into a book. Moreover, even when reading continuously, the book can be placed face up, so it can be read without having to move the book each time.

Effects of the Invention As described above, the present invention includes a detecting section having a sequential scanning sensor that converts image information into an electrical signal, and a detecting section that holds the detecting section in a space and that detects images within a plane perpendicular to the main scanning direction of the sensor. By having a drive unit that can move the detection unit and rotate the detection unit around an axis in the main scanning direction, even if the original is bound into a book, the binding margin can be read clearly and the binding margin can be read continuously. Even when reading the book, the book can be placed facing upwards, which has the effect of allowing the book to be read without having to move the book each time.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a reading device according to an embodiment of the present invention, FIG. 2 is a sectional view of the detection section of FIG. 1, FIG. 3 is a schematic explanatory diagram of a conventional reading device, and FIG. FIG. 4 is a sectional view of the detection section in FIG. 3; l...Detection unit, 11...Original table, 12
・・・・・・Document, 20・・・・Drive unit. Name of agent: Patent attorney Toshio Nakao, 1 person (2--,
,5 Symphony (King!+(4mi2) Figure 2 Figure 3 Figure 4 Zo□χ

Claims (1)

[Claims] a detecting section having a sequential scanning sensor that converts image information into an electrical signal; A reading device comprising: a drive section that can rotate the detection section around an axis in a scanning direction.