JPS6361551A - Scan type image reader - Google Patents

Abstract

PURPOSE:To absorb oscillation and to prevent rocking or the like by not fixing a reader part to a device main body but supporting it with a pressing member which has elastic force at the time of compression and using a cushion material as the pressing member. CONSTITUTION:A reader part 3 is not fixed to the device main body 2 in a vertical direction, and an elastic pressing member 13 is interposed between the device main body 2 and a reader part unit. When the device main body 2 is pressed to an original 1 with force F2, the elastic pressing member 13 is contracted, and the pressing roll 12 of the reader part is closely brought into contact with the original by the compressive elastic force, and the pressing roll 12 is always closely brought into contact with the surface of the original by the action of the elastic force of the pressing member 13 even if the original waves as shown by A and B in the figure of the surface of the original is bent, and consequently, positional relations among the picture surface of the original, an image forming part, and a photoelectric converting part are not changed. The cushion material is used as the pressing member 13 to absorb even minute oscillation accompanied with the movement of the reader part. Further, the unit of the reader part 3 is freely attached to and detached from the device main body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a scanning image reading device that reads a document image by scanning the document.

[Background of the invention]

Conventionally, in this type of image reading device, an image reading means 9 (hereinafter referred to as the reader part) for reading the original image is fixed in the main body of the apparatus, the original is pressed against the original table, and the original table is moved. A common method is to scan the document by moving the reader or by moving part of the reader to read the document image.

In addition, in recent years, a part of the reader and a writing means (hereinafter referred to as part of the printer) for writing information read by the part of the reader onto a recording material are disposed in one main body of the device.
A type of device in which the main body of the device is held by hand, a part of the reader is pressed against the document, and the document is moved and scanned to read and annotate. A type of device has been proposed in which a chisel is held in the hand, pressed against the document, and the document is read by moving and scanning by hand, and the read image information is sent to a part of the printer and written.

However, in such a manual scanning image reading and forming apparatus, if the document surface is uneven or curved, a part of the reader may not make proper contact with the document surface. Due to rounding, disturbances occur in the image formation of the original image,
Images may be blurred.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a scanning image reading device that eliminates the drawbacks of the conventional scanning image reading device as described above and prevents disturbances in image formation and image blurring caused by this. be.

[Summary of the invention]

The image reading device according to the present invention forms an image of reflected light from a document image exposed by a document exposure section on a photoelectric conversion section via an imaging section, and converts image information from the photoelectric conversion section into an electrical signal. Picture fi to take out! The apparatus is characterized in that it has nine reading means, and the image reading means including the original exposure section, the imaging section, and the photoelectric conversion section is constructed as an integrated unit elastically attached to the main body of the apparatus.

[Embodiments of the invention]

Embodiments of the image reading device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the present invention, in which 1 indicates a document and 2 indicates an image reading apparatus main body. The illustrated apparatus has an ia7 image reading means, that is, a reader part 3, and a folding part, that is, a printer part 4, that folds an image onto a recording material based on the captured image information, in a main body 2 of the apparatus. However, the gist of the present invention is an image reading means, and a part of the printer may be a separate device. The reader part 3 includes an exposure part 5 composed of, for example, an LED.
This exposure section irradiates the original 1 through a protective glass 6, and the light image is formed on a photoelectric conversion section 8 such as a one-dimensional CCD through a focusing section 7 such as a lens, and is converted into an electrical image. converted into a signal.

This electrical signal is sent to the printer section 4 by the control circuit section 9.

In the illustrated embodiment, printer portion 4 is thermal, alo
and has a thermal radar 11 for recording an image thereon,
An image is written on thermal paper 10 based on information sent from control circuit section 9.

The reader part 3 including the document exposure section 5, the imaging section 7, and the photoelectric conversion section 8 is configured as an integral unit that is elastically attached to the apparatus main body 2, and this unit is oriented in the direction toward the original 811. The roller is movably attached to the main body 2 of the apparatus, and a pressure roller is provided at the tip thereof to be pressed against the surface of the document 1.

A suppressing member 13 for elastically pressing the unit toward the document surface is disposed between the unit and the main body 2. In the illustrated example, the suppressing member 13 is made of an elastic cushioning material. , this may be constituted by a spring or the like, for example.

When reading and writing an image on a document using this device, scanning is performed by holding the main body 2 by hand and using the pressing force of F2 and F1.
This is done by the scanning movement force of. At this time, each member within the unit of the part of the leader indicated by diagonal lines is fixed as part of the leader.

This leader part 3 is not fixed to the main body in the vertical direction, and an elastic suppressing member 13 is interposed between the main body 2 and the leader part unit.

When the main body 2 is brought into pressure contact with the original 81 K with the force of F2, the elastic suppressing member 13 contracts, and the pressure contact roller 12 of a part of the leader comes into close contact with the document due to its superelastic force, and the pressure contact rollers 12 of the reader are brought into close contact with the document as shown in A and B. Even if there are ups and downs or the document surface is curved, the suppression member 1
The pressure contact roller 12 always maintains close contact with the document surface due to the elastic force in step 3, and therefore, there is no change in the positional relationship between the image surface of the document, the imaging section, and the photoelectric conversion section. The optical path between the photoelectric converter 8 such as a CCD and the like is kept constant by the lens, thereby preventing disturbances in image formation. The effect is the same even if a spring-like elastic body is used as the suppressing member 13 instead of the cushion material shown in the figure. Using the reader's body can also absorb minute vibrations caused by movement of part of the reader, improving resolution.

The image reading device shown in FIG. 1 has a reader unit 3 that is detachable from the main body 2, and when reading an image Q, the reader part 3 is taken out from the device main body 2 and is connected to the main body by the lead iK. It can also be connected to the control circuit section 9 in 2. FIG. 2 shows a state in which the reader part 3 is pulled out in this way and the document 1 is scanned by it. This figure is a view from above of an apparatus in which the reader part 3 is removed from the main body 2 of the apparatus during image reading and the document 1 is scanned by only the reader part 3.

In addition, the above device does not directly connect the reader part 3 to the control circuit 9 in the device main body 2, but records the read image information on a recording section such as a card, and then inserts this into another printer. It can also be used to form or write images.

Figure 3 shows one such example, which does not have a cutting section and consists of a reader section and a recording section such as a magnetic card 14, and the image information is recorded on the card and stored separately. The card is inserted into the printer and visualized.

〔Effect of the invention〕

In the image reading device according to the present invention, disturbances in image formation can be prevented by supporting the reader section with a suppressing member having elastic force during compression without fixing the reader section to the main body of the device. However, when a cushion material is used as the suppressing member, disturbances in image formation such as blur can be prevented because the cushion member absorbs the imaging.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an image reading device according to the present invention, and FIG.
The figure is a top view showing a modification of the use of the apparatus shown in the first factor, and FIG. 3 shows an example in which a magnetic card is used for image recording. 1... Original 2... Device body 3...
Image reading section (reader part) 4...Image writing section (
Printer part) 5... Exposure section 6... Protective glass 7... Imaging section (lens) 8... Photoelectric conversion section (CCD) 9... Control circuit section 1o...
Thermal paper 11... Thermal head 12... Pressing roller 13... Pressing member 14... Magnetic card □-
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Claims (1)

[Scope of Claims] 1. Image reading in which reflected light from a document image exposed by a document exposure section is imaged on a photoelectric conversion section via an imaging section, and image information is extracted from the photoelectric conversion section as an electrical signal. What is claimed is: 1. A scanning image reading device, comprising: an image reading device including an original exposure section, an imaging section, and a photoelectric conversion section, configured as an integrated unit elastically attached to the main body of the device. 2. The scanning image reading device according to claim 1, wherein the unit forming the image reading means is removably attached to the main body of the device.