JPS6243583B2 - - Google Patents

Description

Detailed Description of the Invention Image information of a portion of the document is acquired by manually performing sub-scanning in a direction perpendicular to the direction in which image information of the document is read by a solid-state image sensor (solid-state line image sensor) that performs main scanning. A manual sub-scanning type reader that can read any image information is combined with an image signal recording device to easily read only the necessary image information in the document that is the subject. Since its use provides many advantages that could not be obtained with conventional copying machines, research into its practical application has been promoted, and the applicant's company has not previously developed this type of device. Many research results have been obtained from.

By the way, the manual sub-scanning type reader described above is
In order to make it possible to use the resulting image signal on recording paper to obtain a copy, it is necessary to be able to read the original with a relatively large reading width. Yes, and
In order to read and reproduce image information faithfully, it is necessary to create an image signal that can obtain a recorded image with a constant scanning line interval, and it is not necessary to simply recognize characters and numbers. OCR (optical reader) is said to only be able to obtain information.
Because of this, the manual sub-scanning type reader inevitably has a large form.
The area to be scanned in the document is covered by the device and cannot be viewed directly by the operator. In order to facilitate operations such as setting the reading device on the document surface in the correct state, manual sub-scanning type reading devices are equipped with a view IDer for monitoring the reading area. .

FIG. 1 is a perspective view showing an example of the configuration of a conventional manual sub-scanning type reader equipped with a viewfinder. In FIG. 1, O is an original, 1 is a housing, and TPG is a timing pulse generator. The timing pulse generator TPG generates a timing pulse every time the housing 1 moves a predetermined distance in the sub-scanning direction, and the timing pulse generates image information from the solid-state image sensor 9. To obtain a recorded image with a constant scanning line interval even if the sub-scanning speed is uneven.

The timing pulse generator TPG includes a rotating disk 2 whose circumferential surface partially slides on the document surface.
and a signal generator 3 that generates an electrical signal using a timing pulse generation pattern 2a provided on the rotating disk 2. The timing pulse generation pattern 2a provided on the rotating disk 2 is an optical pattern when the signal generator 3 is an optical to electrical converter, and is an optical pattern when the signal generator is a magnetic to electrical converter. It has a magnetic pattern.

4 is a running roller 4, and when the housing 1 is manually pushed in the direction of arrow Y in the figure, the running roller 4 and the aforementioned rotary plate 2 rotate on the original O. to move in the direction of arrow Y.

Further, in FIG. 1, 5 and 6 are light sources for illumination, 7 is a reflecting mirror, 8 is an imaging lens, and 9 is a solid-state image sensor, and the image information in the original O appearing in the reading window 12 is , an image is formed on a solid-state image sensor 9 via a reflecting mirror 7 and an imaging lens 8.

Reading window 1 bored in the bottom plate 1a of the housing 1
A frosted glass plate 11 is provided on the top plate 1b of the housing 1 at a position directly above the subject surface (original surface).
and the glass plate 11 that forms an image of the subject, where L is the distance between the subject plane and the frosted glass plate 11.
3 such that each has a focal length of L/8
An imaging optical system 10 consisting of convex lenses 10a, 10b, and 10c is arranged.

A viewfinder consisting of the above-mentioned imaging optical system 10 and ground glass plate 11 (screen 11) is as follows:
The document appearing in the reading window 12 is captured by the imaging optical system 1.
0 on the ground glass plate 11 placed on its imaging plane as an erect image of equal size.

In the manual sub-scanning type reading device having the structure as shown in the first diagram, the operator performs the operation of reading the image information of the document while visually confirming the reading area of the document using the viewfinder. This makes it possible to accurately read the image information to be read in a document and convert it into an image signal. When reading the image information, it was found that there were quite a few problems.

In other words, it is desirable for a manual sub-scanning type reader to be as small as possible from the viewpoint of ease of handling, but in a manual sub-scanning type reader equipped with a view finder, However, since it is necessary to provide an optical system to image the subject on the image forming surface of the ground glass plate, there is a problem that the apparatus inevitably becomes larger. The surface is not on the same plane,
Although the frosted glass occupies a high position relative to the document surface, the human eye sees the viewfinder surface and the document image at the same time, which causes a sense of discomfort to the operator. When a person performs a reading operation using a manual sub-scanning type reader while looking at the image formed by the viewfinder, there is also the restriction that the reader must move in the sub-scanning direction while keeping his/her eyes directly above the ground glass plate. ,
It was requested that the above problems be resolved.

The present invention has been made to provide a manual sub-scanning type reader equipped with a viewfinder that does not have the above-mentioned problems. The contents will be explained in detail with reference to the attached drawings.

FIG. 2 is a perspective view of the manual sub-scanning type reader seen from the bottom side, in order to show the configuration of the traveling section of the manual sub-scanning type reader, and FIGS. 3 to 5 are plates. FIG. In FIG. 2, 1 is a housing of a manual sub-scanning type reader, 1a
is a bottom plate, 12 is a reading window, and 13 and 14 are
is a running roller, and the running roller 13,1
A rotating shaft 4 is supported by a bearing (not shown) provided in the housing 1 .

The plate-shaped guide member 15 shown in FIG. 3 is provided with an opening 16 having a width L equivalent to the reading width L of a manual sub-scanning type reader, and is made of, for example, a translucent synthetic resin with a thickness of t. It's made of board. The plate-shaped guide member 15 is placed on the document so that the image information to be read in the document appears in the opening 16, and the manual sub-scanning type reading device By performing sub-scanning along the opening 16 in the plate-shaped guide member 15 described above, the opening 1 in the plate-shaped guide member 15 is
The image information appearing in 6 is read.

Running rollers 13, 1 of manual sub-scanning type reader
4, the running roller 13 is a plate-shaped guide member 1.
The length of the roller 14 in the rotation axis direction is longer than the reading width L so that the roller 14 can run in contact with the surface of the plate-shaped guide member 15. 16, the length of the running roller 14 in the rotation axis direction is slightly shorter than the reading width L.
4 is configured such that its circumferential surface is brought into contact with the document surface through an opening 16 of a plate-shaped guide member 15.

As described above, the running roller 13 and the running roller 14 run with one running roller 13 in contact with the upper surface of the plate-shaped guide member 15, and the other running roller 14 is guide member 1
5, the contact surface of the two traveling rollers 13 and 14 is equal to the thickness t of the plate-shaped guide member 15 in the vertical direction. It's off by just that. Therefore, if the two running rollers 13 and 14 are of the same diameter, the support positions of the rotating shafts 13a and 14a of the running rollers 13 and 14 are determined by the plate-shaped guide member described above. 15 in the vertical direction by a distance t corresponding to the plate thickness t (see Fig. 6), and supported so that the rotating shafts 13a and 14a of the two running rollers 13 and 14 are at the same height from the bottom plate 1a. In this case, the radius of the running roller 14 is set larger than the radius of the running roller 13 by the thickness t of the plate-shaped guide member 15 (see Fig. 7), and the manual sub-scanning type reader is operated. When the document is moved in the sub-scanning direction while being guided by the plate-shaped guide 15, the bottom plate 1a of the manual sub-scanning type reader is made parallel to the document surface, so that the image information of the document is transmitted through the imaging optical system. so that the image is formed on the solid-state image sensor in the correct imaging state.

The plate-shaped guide member 15 shown in FIG. 3 shows a configuration example in which the opening 16 through which the running roller 14 is guided is of a constant size. The figure shows a plate-shaped guide member 15 in which the movable range of the running roller 14 in the opening 16 is configured to be variable. In the plate-shaped guide member 15 shown in FIGS. 4 and 5, a guide groove 16a is provided in the opening 16 in the longitudinal direction thereof,
Further, the guide groove 16a in the opening 16 described above
A moving range adjusting member 17 equipped with a protrusion 17a that fits into the opening 16 is provided in the opening 16, and by moving the moving range adjusting member 17 in the longitudinal direction of the opening 16, manual sub-scanning type reading can be performed. The moving range of the running roller 14 in the device, that is, the reading area by the manual sub-scanning type reader can be freely adjusted.

Since the traveling guide device of the manual sub-scanning type reader of the present invention is configured as described above, the plate-shaped guide member 15 is placed on the document 0, and the opening 16 of the plate-shaped guide member 15 is placed on the document 0.
After making sure that the document reading area appears within the
The running roller 14 of the manual sub-scanning type reader is brought into contact with the document surface through the opening 16 in the plate-shaped guide member 15, and the running roller 13 is brought into contact with the upper surface of the plate-shaped guide member 15. 8. When the manual sub-scanning type reader is moved by hand in the state shown in the figure, the manual sub-scanning type reader moves as its running roller 14 is guided by both side walls of the opening 16. Therefore, the image information in the reading area of the document can be easily read while the traveling direction is restricted.

In order to ensure good reading operation even when the original has a curved reading surface like a book, it is preferable to use a soft synthetic resin material as the plate-shaped guide member 15. .

As is clear from the above description, in the travel guide device of the manual sub-scanning type reader of the present invention, the travel direction of at least one travel roller is regulated by the opening in the plate-shaped guide member. This makes it possible to easily read the image information in the reading area of the original by using a plate-shaped guide member, and it is possible to easily read the image information in the reading area of the original by using the plate-shaped guide member. The image information in the reading area can be read easily, accurately and quickly. Therefore, the device of the present invention solves the various problems that occur in manual sub-scanning type readers equipped with a view finder. All of these problems can be solved satisfactorily, and even if the contact surfaces of the two running rollers are vertically deviated by the thickness of the plate-shaped guide member used in the device of the present invention, the image of the document remains unchanged. It is possible to make the vehicle travel in a correct posture so that information is imaged in the correct image formation state on the solid-state image sensor via the imaging optical system.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example configuration of a manual sub-scanning type reader, and Fig. 2 is a view of the manual sub-scanning type reader from the bottom side to show the configuration of the traveling section of the manual sub-scanning type reader. FIGS. 3 to 5 are perspective views of a plate-shaped guide member, and FIGS. 6 and 7 are side views for explaining the configuration and mounting manner of the traveling roller;
FIG. 8 is a plan view for explaining the reading operation. 1... Housing, 1a... Bottom plate, 12... Reading window,
13, 14... Traveling rollers, 13a, 14b...
... Rotating shaft, 15 ... Plate-shaped guide member, 16 ... Opening, 17 ... Movement range adjustment member.

Claims (1)

[Claims] 1 Main scanning by the solid-state image sensor is performed on the document surface with a predetermined reading width L, and sub-scanning can be performed by manually moving the solid-state image sensor in the sub-scanning direction orthogonal to the main scanning direction on the document surface. A manual sub-scanning type reader equipped with a plurality of running rollers as described above can be operated by a plate-shaped guide member having an opening having a width L equivalent to the predetermined reading width L of the above-mentioned manual sub-scanning type reader. A running guide device for a manual sub-scanning type reader configured to regulate movement in the sub-scanning direction, wherein the manual sub-scanning type reader described above is configured to control movement of at least one of the plurality of running rollers. The object passes through the opening having a predetermined reading width L in the plate-shaped guide member, and its peripheral surface is brought into contact with the document surface, and the traveling direction is regulated by the opening of the plate-shaped guide member. Furthermore, when the other traveling roller is brought into contact with the upper surface of the plate-shaped guide member, the image information of the document is converted into a solid image through the imaging optical system. A travel guide device for a manual sub-scanning type reading device, which is configured to be moved in a sub-scanning direction in a correct posture that allows an image to be formed on a sensor in the correct image formation state.