JPS59201179A - Microscanner - Google Patents

Abstract

PURPOSE:To miniaturize a microscanner and to improve both linearity and constant speed performance of a scanner part using a scan guide and a driving motor and at the same time to improve the operability by using an optical fiber array to an optical system. CONSTITUTION:A microscanner is provided with a solid-state image sensor set along a scan guide 2 and a scanner part 2 consisting of an optical system containing a Selfoc lens array and an illumination part. Furthermore a scan driving system 3 which contains a motor, a wire, a pulley, etc. and drives the part 2 is added together with a drive switch 4 which controls the system 3, and a read processor 5 which controls the part 2 and the system 3 and processes the picture information read by the part 2 along with the scan control of the part 2. The light 21 given from illumination system of the part 2 is irradiated to an orginal 22 as well as to a timing mark 23 put on a marking scale provided to a scan guide 1 and then made incident to a one-dimensional solid-state image sensor 25 via an optical fiber lens array 24. In such constitution, a microscanner is miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scanner for optically reading characters, figures, etc. using a solid-state image sensor.

2. Description of the Related Art Conventionally, a simple hand scanner that combines a solid-state image sensor and an optical system has been used to read image information of only a desired portion of a document containing written characters, figures, etc. However, since hand scanners scan manually, they have poor straightness in the scanning direction, and the scanning speed is highly uneven.
It was unsuitable for reading long lines. There was a method that improved these and scanned with a hand scanner along a scanning guide, but the scanning kite and hand scanner had to be supported with both hands, making it difficult to operate. In addition, in order to correct unevenness in scanning speed, solid-state image sensors are used. However, it was not practical in terms of configuration and operability.

The present invention eliminates the drawbacks of the prior art, and allows a part of the scanner to be scanned by a drive motor along a scanning guide, so that the distortion in the scanning direction of image information read from a solid-state image sensor can be simply corrected, and it is small and compact and can be operated. The purpose is to provide a micro scanner with good performance.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described and explained below with reference to drawings showing embodiments. FIG. 1 shows an overall view of one embodiment. A scanner sound lK2 consisting of an optical system using a solid-state image sensor, a SELFOC lens array, and an illumination unit is provided along the scanning kite 1, and a driving morph, a wire r-, a pulley, etc. for scanning the scanner part 2 are combined. a control switch 4 for controlling the scanning drive system 3; a control switch 4 for controlling the scanner part 2 and the drive morph 3; and processing the right image information read by the scanner part 2; It consists of a reading processing device R5 that performs scanning control.

Scanning of the scanner part 2 is carried out by a drive motor 3 using a wire or the like, and since it can be easily accomplished by a skilled worker, a detailed explanation will be omitted.

FIG. 2 shows the optical system of the scanner part 2 shown in 1.i. The light 21 emitted from the illumination system hits the original 22 and the timing mark 23 attached to the marking scale provided on the scanning notebook J.
The light enters a one-dimensional solid-state image sensor 25 through an optical fiber array 24 .

With the above configuration, the scanner part 2 is controlled for scanning and reading according to the states of the reading processing device 5 and the control switch 4. The scanning reading area of the scanner part 2 at this time is shown in FIG. The scan reading area of the scanner part 2 is a main scanning range 27 by a one-dimensional solid-state image sensor 25 and a drive motor 3.
The timing mark 23 is determined from the sub-scanning range 28 to be scanned, and a timing mark 23 is provided 11 in a part of the scanning reading area. Therefore, as shown in Fig. 3, the characters (A, 13, C, l) written on the manuscript 22, which serve as image information, are...
・) Set the kite 1 so that the 26 does not overlap the Quiminog mark 23, and start scanning 1r7c. Fourth
The image information read from the scanner part 2 is shown in the figure. As can be seen from the figure, even when the drive motor 3 is used, the scanner part 2 is not scanned at a constant speed due to uneven rotation, and the characters 26 and timing marks 23 that serve as image information are proportionally distorted in scanning. If the scanning distortion of the characters 26 serving as image information is corrected in accordance with the interval t between the read timing marks 23, desired image information can be obtained.

As described above, compared to conventional hand scanners, it is possible to make the scanner smaller by using an optical fiber balance array in the optical system, and by using a scanning kite and a drive motor, the scanner part can be moved straight and at a constant speed. Sex improves and 4 at the same time
1'y cropping efficiency also improves. Furthermore, by reading the timing mark and the desired image information with the same one-dimensional solid-state image sensor, it is possible to simplify the process of increasing or reducing scanning distortion.

[Brief explanation of the drawing]

Figure 1 is an overview of the entire microscanner, Figure 2 is a diagram showing the optical system of a part of the scanner shown in Section 1, and Figure 3 is a diagram showing the optical system of a part of the scanner shown in Section 1. 1
A diagram showing areas. FIG. 4 is a diagram showing image information that could not be read from a document and scanning distortion of timing marks attached to a marking scale. In the figure, 1 is a scanning kite, 2 is a part of the scanner, 3 is a scanning drive system, 4 is a control switch, 5 is a reading processing device, 2
1 is a light, 22 is a document, 23 is a timing mark, 24 is a class fiber lens array, 25 is a one-dimensional solid-state image sensor, and 26 is a character.

Claims (1)

[Claims] Each scanner consists of an optical system composed of solid-state image sensors, an optical fiber array, and an illumination section, a scanning 1 drive system in which a part of the scanner is linearly scanned by a drive motor on a straight line F, and It consists of a scanning guide equipped with a signpost with a timing mark for correcting scanning distortion, and the desired image information and the timing mark attached to the signpost are simultaneously read by the same solid-state image sensor to correct the scanning distortion. A microscanner that obtains corrected image information.