KR100995003B1 - Duplex scanning unit - Google Patents

Abstract

The present invention relates to a scanning apparatus, and more particularly, to a duplex scanning apparatus capable of scanning both sides of an original.

In accordance with an aspect of the present invention, a two-sided scanning apparatus includes: a first scan module including a first light source for irradiating light toward an original, a first image sensor for detecting reflected light of the irradiated light, and a first plate for contacting the original; And a second scan module including a second light source for irradiating light toward the original, a second image sensor for detecting the reflected light of the irradiated light, and a second plate for contacting the original; The first scan module and the second scan module are installed on the opposite side with the originals interposed therebetween, and the transparency of the first original plate and the second original plate are adjusted differently from each other. At this time, the first plate and the second plate may use a glass plate or a transparent organic light emitting diode (OLED) plate is adjusted according to the power supply.

Duplex Copy, Duplex Scan, Copier, Scanner, Scanning

Description

Duplex Scanning Device {DUPLEX DOCUMENT SCANNING APPARATUS}

The present invention relates to a scanning apparatus, and more particularly, to a duplex scanning apparatus capable of scanning both sides of an original.

In general, a scanning device refers to a device that scans, or reads, an image of data recorded on an original.

Such a scanning device may be a single peripheral device connected to a personal computer or the like, but may also be used to read an image from a copy machine. In particular, with the recent increase in the use of digital multifunction devices equipped with various devices on a single machine, the use of scan devices is increasing.

Scanning apparatuses used in the present are widely used methods of irradiating strong light on the surface of the original to be scanned, and analyzing the light reflected from the original by an image sensor to digitally store the image of the original.

Most of these conventional scanning devices are designed to scan only one surface of an original. Therefore, when data is recorded on both sides of the original, the user must turn the original one by one so that the other side can be scanned, which is not only time-consuming but also very troublesome.

Recently, development of a scanning device capable of scanning both sides of a document has been made, but it is still at the level of adding a scan module on the opposite side while maintaining the conventional general configuration. Such a double-sided scanning device saves the trouble of flipping the original, but is a problem that the quality of the scan is poor.

The present invention has been invented to solve the above problems, and an object thereof is to provide an apparatus for scanning both sides of a document at high speed without deterioration in quality.

In order to achieve the above object, a double-sided scanning apparatus according to the present invention includes a first light source for irradiating light toward an original, a first image sensor for detecting the reflected light of the irradiated light, and a first original glass contacting the original. A first scan module; And a second scan module including a second light source for irradiating light toward the original, a second image sensor for detecting the reflected light of the irradiated light, and a second plate for contacting the original; The first scan module and the second scan module are installed on the opposite side with the originals interposed therebetween, and the transparency of the first original plate and the second original plate are adjusted differently from each other.

In this case, the first glass plate and the second glass plate may use a glass plate or a transparent organic light emitting diode (OLED) plate whose transparency is adjusted according to a power supply, and the transparency may be partially adjusted.

In addition, the cover for double-sided scanning of the present invention, in a cover provided on the platen of the scanning device such as a scanner or a copying machine, a second light source for irradiating light toward the original and a second light for detecting the reflected light of the irradiated light A second scan module including an image sensor and a second document glass contacting the document; Transparency of the second document is adjusted.

In this case, the second plate may be a glass plate or a transparent organic light emitting diode (OLED) plate is adjusted according to the power supply, the transparency may be partially adjusted.

According to the present invention, by providing two document glass to adjust the transparency, there is an effect that can scan both sides of the document with excellent quality by adjusting the transparency of the document according to the surface to be scanned.

In addition, there is an effect that can increase the speed of the double-sided scanning operation by making the document glass so that the transparency is partially adjusted.

The present invention will now be described in detail with reference to the accompanying drawings. The drawings shown herein illustrate the concept of the scanning device of the present invention, and the present invention is not limited to the illustrated configuration.

1 is a view showing a duplex scanning apparatus according to an embodiment of the present invention.

The duplex scanning apparatus according to the embodiment of the present invention includes a first scan module 10 and a second scan module 20. In addition, there are various components according to the characteristics of the apparatus to which the scan apparatus is applied, but this is the same as the conventional ones, and thus description thereof will be omitted.

The first scan module 10 and the second scan module 20 include light sources 12 and 22, image sensors 14 and 24, and glass plates 16 and 26, respectively, and glass plates 16 and 26. Are symmetrically configured to face each other. The light sources 12 and 22 and the image sensors 14 and 24 may be referred to as essential components of the scanning apparatus. In the double-sided scanning apparatus according to the present embodiment, the two scanning modules each use the document plates 16 and 26. Have

The scan modules 10 and 20 include various configurations in addition to the light sources 12 and 22 and the image sensors 14 and 24 according to the principle of scanning, but the present invention is not particularly limited thereto.

The light sources 12 and 22 are components for illuminating light on one surface of the original 1 placed between the original plates 16 and 26. As a kind of light source, a product that emits powerful light such as a cold cathode fluorescent lamp (CCFL) or a halogen lamp is used. Recently, a white LED may be used as a light source, but the present invention is not particularly limited.

The image sensors 14 and 24 detect the light reflected from one side of the original and digitize the data image recorded on the original, also called an optical sensor. Mainly used image sensors are CCD (Charged-Coupled Device) and CMOS (Complementary Metal-Oxide Semiconductor), and the image sensor of the present invention is not particularly limited.

The method of sending the light reflected from the document to the image sensor varies widely, but the present invention is not limited to any one method and can be applied to all possible methods. Various methods may be included according to each method, but the description is omitted since it is the same as the conventional ones.

The original plates 16 and 26 are portions where the original 1 is placed, and serve to prevent distortion of the image by keeping the original flat. To this end, the surface to be scanned is placed toward the document glass, and the light emitted from the light source passes through the document glass and is projected onto the document. Therefore, the conventional scanning device capable of scanning only one side simply used transparent glass or transparent plastic products. In addition, since the duplex scanning device developed in the past uses the same material, it was manufactured in such a manner that a transparent plate is placed on the back of the document. This makes it difficult to reflect light reflected on the surface to be scanned, which is a major cause of deterioration of scan quality.

The double-sided scanning apparatus according to the present embodiment solves this problem by using a plate that can be switched between the transparent and opaque states of the document glass 16 and 26. When scanning is performed using the first scan module 10, the first document 16 is in a transparent state and the second document plate 26 is in an opaque state to improve the quality of the scan. On the contrary, when the scan is performed using the second scan module 20, the second document plate 26 is in a transparent state and the first platen glass 16 is adjusted to be in an opaque state.

The material used for the first document glass and the second document glass of the present invention is not particularly limited as long as the material can be switched between a transparent state and an opaque state. Representative materials of this nature are PDLC (polymer dispersion liquid crystal) glass products. It is a product of a structure in which a special LCD film, in which a liquid crystal film made by encapsulating liquid crystal molecules in a capsule, is attached to two transparent films with a conductive film, is bonded to two glass plates. This product is a glass of opaque state because irregularly dispersed liquid crystal molecules when the power is not connected, and becomes transparent glass by the alignment of liquid crystal molecules. Transmittance called magic glass, miracle glass, and ino glass etc. It is a variable glass.

Another material applicable to the present invention is an organic light emitting diode (OLED) plate. An organic light emitting diode refers to a self-luminous display using a principle that light is generated when electrons and holes are bonded to an organic material layer when a current flows through a thin film of fluorescent or phosphorescent organic material. OLED products are manufactured with ultra-thin displays and can be manufactured with transparent displays by using transparent materials for internal parts. It is therefore possible to apply thin and transparent OLEDs to the platen of the present invention.

In particular, the first and second glass plate of the present invention is manufactured to be able to partially adjust the transparency. In the case of the PDLC glass product, by dividing the compartment therein, the part of which transparency is controlled by supply of power can be separately controlled. In the case of the organic light emitting diode, the transparency may be partially adjusted by individually driving the light emitting devices using the active organic light emitting diode (AMOLED).

Thus, the scanning device of the present invention, which can partially adjust transparency, can dramatically improve the speed of double-sided scanning through a method of sequentially converting transparency. One scan module does not operate the other scan module after the scan is finished, but by scanning two scan modules together at a time difference, the scan speed is much faster than when each scan module is operated.

2 is a view for explaining a scanning method of the duplex scanning device according to an embodiment of the present invention. FIG. 1 is a diagram illustrating a case of scanning from the first scan module. Each of the sections shown in the drawing distinguishes sections in which transparency can be adjusted.

  When the first scan module 10 first scans one surface of the original 1, in the section A through which the light of the first light source 12 passes, the first original glass 16 is transparent and the second original glass ( 26) is opaque.

When the light of the first light source 12 is out of section A, the second scan module 20 starts scanning the other surface of the document 1. At this time, the section B is the first plate 16 is transparent and the second plate 26 is opaque state, the section A is opposite to the second plate 26 is transparent and the first plate 16 is Transition to opaque state.

In this way, the scan can be continuously performed while partially switching the transparency, and the finer the part that can adjust the transparency, the shorter the length of each section of FIG. 2 is, the first scan module 10 and The time taken for the duplex scan operation may be reduced by reducing the difference in the time during which the second scan module 20 is operated.

3 is a view showing a lid for scanning on both sides according to another embodiment of the present invention.

Duplex scanning cover according to an embodiment of the present invention is a structure that can be additionally installed on the platen 160 of the conventional scanning device 100, and includes a second scan module (30). In addition, there are various components according to the characteristics of the apparatus to which the scan apparatus is applied, but this is the same as the conventional ones, and thus description thereof will be omitted. The same is true of the conventional scanning apparatus 100.

The second scan module 30 includes a second light source 32, a second image sensor 34, and a second document glass 36, and the second document glass 36 faces each other on the document glass 160. It is configured to. The second light source 32 and the second image sensor 34 may be referred to as an essential component of the scanning apparatus, and the lid for double-sided scanning according to the present embodiment has a second platen 36 separately.

The second scan module 30 includes various configurations in addition to the second light source 32 and the second image sensor 34 according to the principle of scanning, but the present invention is not particularly limited thereto.

Since the second light source 32 and the second image sensor 34 are the same as described above, description thereof will be omitted.

The second document glass 36 may be positioned to face the document glass 160, and may be positioned to contact the document 1 placed on the document glass 160. The second document glass 36 of the lid for double-sided scanning of the present invention uses a plate that can be switched between transparent and opaque materials, and the second document glass 36 is used when the conventional scanning device 100 is used. You can improve the quality of the scan by adjusting the opacity. Of course, when scanning with the second scan module 30 should be adjusted to be transparent. Materials that can be switched between transparent and opaque states are the same as described above and should be omitted.

Such a cover for double-sided scanning is used in place of the cover portion of the conventional scanning device, it is generally preferred to be fastened in a structure that can be opened and closed through the hinge coupling.

In addition, the material of the second document glass 36 of the lid for double-sided scanning is not particularly limited as long as it is a material for which transparency is switched, and as described above, PDLC glass products and organic light emitting diodes may be used.

Further, by manufacturing the second document glass 36 to partially adjust the transparency, the speed of the double-sided scanning operation can be dramatically improved as described above.

In the above, the present invention has been shown and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiment, and those skilled in the art to which the present invention pertains can make various changes without departing from the technical spirit of the present invention. Therefore, the scope of the present invention should not be limited to the specific embodiments, but should be construed as defined by the appended claims.

1 is a view showing a duplex scanning apparatus according to an embodiment of the present invention.

2 is a view for explaining a duplex scanning method of the duplex scanning apparatus according to an embodiment of the present invention.

3 is a view showing a lid for scanning on both sides according to another embodiment of the present invention.

Description of the Related Art

10: first scan module 12: first light source

14: First Image Sensor 16: First Platen Glass

20,30: second scan module 22, 32: second light source

24, 34: second image sensor 26, 36: second glass

100: conventional scanning device 160: document glass

Claims (8)

A first scan module comprising a first light source for irradiating light toward the original, a first image sensor for detecting the reflected light of the irradiated light, and a first plate for contacting the original; And A second scan module including a second light source for irradiating light toward the original, a second image sensor for detecting the reflected light of the irradiated light, and a second plate for contacting the original; And the first scan module and the second scan module are disposed on opposite sides with the originals interposed therebetween, and the transparency of the first and second document plates is adjusted differently from each other. The method of claim 1, And the first document glass and the second document glass are glass plates whose transparency is adjusted in accordance with a power supply. The method of claim 1, And the first original glass plate and the second original glass plate are transparent organic light emitting diode (OLED) plates. The method according to any one of claims 1 to 3, And the transparency of the first document glass and the second document glass is partially adjusted. In the cover installed on the platen glass of the scanning device included in a scanner or copier, A second scan module including a second light source for irradiating light toward the original, a second image sensor for detecting the reflected light of the irradiated light, and a second plate for contacting the original; Cover for scanning both sides, characterized in that the transparency of the second document is adjusted. The method of claim 5, And the second document glass is a glass plate whose transparency is adjusted according to a power supply. The method of claim 5, And the second document glass is a transparent organic light emitting diode (OLED) plate. The method according to any one of claims 5 to 7, And the transparency of the second document glass is partially adjusted.

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