WO2010119650A1 - 画像読取装置 - Google Patents
画像読取装置 Download PDFInfo
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- WO2010119650A1 WO2010119650A1 PCT/JP2010/002574 JP2010002574W WO2010119650A1 WO 2010119650 A1 WO2010119650 A1 WO 2010119650A1 JP 2010002574 W JP2010002574 W JP 2010002574W WO 2010119650 A1 WO2010119650 A1 WO 2010119650A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
- H04N1/042—Details of the method used
- H04N1/0446—Varying the modulation time or intensity
Definitions
- the present invention relates to an image reading apparatus that reads an image of a document and outputs an image signal, and more particularly to an apparatus that reads a document image while switching between visible light and invisible light.
- an image reading apparatus that reads an image with an image sensor and outputs an image signal while irradiating light from a light source is used (for example, patent document). 1).
- Image reading apparatuses are widely used in the field of inspection apparatuses for confirming the state of printed matter as well as copying machines and facsimile machines (FAX).
- FAX facsimile machines
- an ink that is sensitive only to invisible light such as infrared light and ultraviolet light and cannot be read by visible light irradiation may be used.
- an image reading device for obtaining a visible light original image and an image reading device for obtaining a non-visible light original image are provided independently, and each image reading device obtains a necessary image. It will be.
- the number of image reading devices corresponding to the type of ink is required, which increases the overall cost.
- a reading device for visible light and invisible light and to read the printed matter while switching between visible light and invisible light.
- the sensitivity of a CCD (Charge Coupled Device) used as a reading element to visible light and the sensitivity of the CCD to invisible light are greatly different. Therefore, if the visible light and the invisible light are simply switched and irradiated, the brightness is extremely different between the visible light image and the invisible light image.
- the ink when reading an image with fluorescent ink sensitive to ultraviolet light, the ink is irradiated with ultraviolet light to emit light, and the emitted light is read by the CCD.
- the light emission intensity of ink is extremely weak, if the apparatus is designed in accordance with the sensitivity of visible light, there is a problem that the ultraviolet light image becomes black and the contents cannot be visually recognized.
- an image reading apparatus it is common to perform signal processing such as shading correction on an image signal. Since the sensitivity of the CCD is greatly different between visible light and non-visible light, a significant level difference occurs in the image signal output from the CCD between irradiation with visible light and irradiation with non-visible light.
- the present invention has been made in view of the above-described problems in the prior art, and in an image reading apparatus that obtains a document image while switching between irradiation with visible light and invisible light, an image with stable brightness is provided. It is an object of the present invention to obtain a signal or to perform appropriate signal processing with a single signal processing means.
- the present invention relates to an image reading apparatus that reads an image of a document while irradiating it by switching between visible light and invisible light, an image sensor that reads an image of the document and outputs an image signal, and visible light and invisible light. And a lighting control means for controlling the lighting time of the light source.
- the lighting control means uses the first light source lighting time when irradiating invisible light as the first light source lighting time when irradiating visible light. It is longer than the second light source lighting time.
- the present invention it is possible to read an image with a light amount corresponding to the sensitivity of the image sensor, regardless of whether visible light or non-visible light is irradiated. Therefore, an image with stable brightness can be obtained. Also, the level difference between the image signals can be suppressed to a small level. Accordingly, it is possible to perform appropriate signal processing on each image signal using a single signal processing means.
- an image reading apparatus that acquires an original image while switching between visible light and non-visible light can acquire an image with stable brightness and perform appropriate signal processing.
- FIG. 1 is a block diagram illustrating an embodiment of an image reading apparatus according to the present invention. It is a block diagram which shows the structure of the data processing part shown by FIG. It is a block diagram which shows the structure of the lighting control circuit shown by FIG. It is explanatory drawing which shows the lighting time of each light source.
- FIG. 6 is a timing diagram illustrating an operation of the image reading apparatus. It is explanatory drawing for demonstrating the write-in and read-out operation
- the image reading apparatus is, for example, an inspection apparatus that inspects the state of a printed matter that is printed using a combination of general ink that can be read by irradiation with visible light and special ink that can be read by irradiation with invisible light. Used.
- FIG. 1 is an overall configuration diagram showing an embodiment of an image reading apparatus.
- the image reading apparatus 1 is configured as an image reading unit different from the conveying apparatus 3 that conveys the document (printed material) 2.
- the image reading apparatus 1 includes a synchronization signal generation circuit 4, a CCD 5, a CCD drive circuit 6, a signal processing circuit 7, an LED 8, an LED drive circuit 9, a lighting control circuit 10, and the like.
- the synchronization signal generation circuit 4 is a circuit that synchronizes the operation of the CCD 5 and the LED (Light Emitting Diode) 8 with the operation of the transport device 3.
- the synchronization signal generation circuit 4 generates a synchronization signal SS based on the conveyance cycle signal VS output from the conveyance device 3.
- the transport cycle signal VS is a signal that is raised to a high level (see FIG. 5A) every time the document 2 is transported for one line on the transport device 3 side (see FIG. 5A).
- the timing (start timing when transporting for one line) and the transport cycle (time required for transporting for one line) are shown.
- the conveyance cycle signal VS is output from, for example, a conveyance mechanism (such as a conveyance motor or its peripheral circuit) in the conveyance device 3.
- the synchronization signal SS is a signal that determines the operation cycle of the CCD 5 and the LED 8 per line, and is generated so as to be synchronized with the transport cycle signal VS (see FIG. 5B).
- the CCD 5 is an image sensor for reading an image of the document 2, and includes line sensors 5a to 5c for three lines.
- R (Red ⁇ ⁇ ), G (Green), and B (Blue) color filters are attached to the light receiving surfaces of the line sensors 5a to 5c.
- Three color image signals of R, G and B are output from the CCD 5.
- the CCD drive circuit 6 is a circuit for driving the line sensors 5a to 5c of the CCD 5.
- the CCD drive circuit 6 outputs a CCD drive signal CT in accordance with the synchronization signal SS from the synchronization signal generation circuit 4.
- the signal processing circuit 7 is a circuit that performs predetermined signal processing on the image signal output from the CCD 5. As shown in FIG. 2, the signal processing circuit 7 is provided with three rows of signal processing systems corresponding to the three line sensors 5a to 5c.
- the signal processing circuit 7 converts analog R, G, and B signals into digital signals to generate R data, G data, and B data, and performs shading on image data.
- a data processing unit 22 that performs signal processing such as correction, buffer memories (line memories) 23a to 23c for temporarily storing R data, G data, and B data for one line, and image data for one frame are stored.
- a memory control unit 25 that controls the operation of writing data to the frame memory 24 and reading data from the frame memory 24.
- the output (R data) of the A / D converter 21a in the signal processing circuit 7 is also output to the lighting control circuit 10 as level reference data.
- the LED 8 is a light source at the time of image reading.
- the LED 8 includes a white light source (hereinafter referred to as “W light source”) 8a as a visible light source, an infrared light source 8b and an ultraviolet light source 8c (hereinafter referred to as “IR light source” and “UV light source”) as non-visible light sources.
- W light source white light source
- IR light source infrared light source
- UV light source ultraviolet light source
- the LED drive circuit 9 is a circuit that drives the LED 8.
- the LED drive circuit 9 supplies a drive current to the LED 8 in accordance with the lighting signal LS and the extinguishing signal PS from the lighting control circuit 10.
- the lighting control circuit 10 is a circuit for controlling the lighting time of each of the light sources 8a to 8c of the LED 8. As shown in FIG. 3, the lighting control circuit 10 includes a counter 31, a register 32, an adjustment unit 33, a comparison unit 34, and a lighting / extinguishing signal generation unit (hereinafter referred to as “LS / PS generation unit”) 35.
- LS / PS generation unit a lighting / extinguishing signal generation unit
- the counter 31 takes in the synchronization signal SS from the synchronization signal generation circuit 4 and a clock signal having a predetermined cycle (for example, a reference clock signal from a clock generation unit (not shown)) CK, and 1 of the synchronization signal SS.
- the number of clocks of the clock signal CK is counted over the period.
- the register 32 is a storage element that stores setting values of lighting times, and holds setting values 32a to 32c of lighting times of the W light source 8a, the IR light source 8b, and the UV light source 8c.
- the adjusting unit 33 finely adjusts the lighting time of the light sources 8a to 8c during the reading operation.
- the adjustment unit 33 includes white data, infrared light, and ultraviolet light R data levels output from the signal processing circuit 7 and preset reference levels for W, IR, and UV. And the lighting times of the light sources 8a to 8c are expanded or contracted according to the difference.
- the comparison unit 34 compares the count value CV of the counter 31 with the set values 32a to 32c in the register 32.
- the LS / PS generator 35 is a circuit that outputs a lighting signal LS for turning on the LED 8 and a light-off signal PS for turning off the LED 8.
- the LS / PS generator 35 changes the level of the lighting signal LS based on the synchronization signal SS and changes the level of the extinguishing signal PS based on the comparison result (match signal CS) of the comparator 34.
- the W setting value 32a, the IR setting value 32b, and the UV setting value 32c (lighting times of the light sources 8a to 8c) in FIG. 3 are set.
- the set values 32a to 32c are set according to the sensitivity of the CCD 5. Specifically, as shown in FIG. 4, the lighting time is set to be longer in the order of the W light source 8a, the IR light source 8b, and the UV light source 8c.
- the lighting times of the light sources 8a to 8c are preferably set so that the levels of the image data at the time of white light irradiation, infrared light irradiation and ultraviolet light irradiation are substantially equal. “The levels are substantially equal” means that the other two lights are irradiated when the level of image data when one of white light, infrared light, and ultraviolet light is irradiated is used as a reference. The difference from the standard of the image data level is within ⁇ 0 to 10%.
- the lighting times of the light sources 8a to 8c cannot be set beyond one cycle of the conveyance cycle signal VS (one scanning cycle of the conveyance device 3). That is, when the conveyance speed of the document 2 is high, it is difficult to set the lighting times of the light sources 8a to 8c so that the image data levels are substantially equal. Therefore, the lighting times of the light sources 8a to 8c may be set so that the level difference between the image signals is within the input allowable range of the signal processing circuit 7 (the level difference is within ⁇ 10 to 50%).
- the setting process of the W setting value 32a, the IR setting value 32b, and the UV setting value 32c may be performed at the manufacturing stage or at the time of shipment of the image reading apparatus 1, or may be performed at the initial setting before the reading operation. Good.
- Each set value may be a fixed value or may be changed according to a user operation.
- the synchronization signal generating circuit 4 is synchronized with the synchronization signal SS (FIG. 5B) in synchronization with the conveyance cycle signal VS (see FIG. 5A) from the conveyance device 3, as shown in FIG. )) And the synchronization signal SS is output to the lighting control circuit 10 and the CCD drive circuit 6.
- the lighting control circuit 10 generates a lighting signal LS in synchronization with the synchronization signal SS and outputs the lighting signal LS to the LED driving circuit 9 in order to light the W light source 8a of the LED 8 through the LED driving circuit 9 ( (Refer FIG.5 (c)).
- the lighting control circuit 10 maintains the output of the lighting signal LS until the lighting time (W set value 32a) set for white light elapses. Therefore, the W light source 8a is continuously lit until the lighting time (W set value 32a) elapses. When the lighting time has elapsed, the light is turned off. Therefore, the line sensor 5a of the CCD 5 is exposed for a predetermined lighting time (exposure time) (see the nth line in FIG. 5F).
- the CCD drive circuit 6 outputs a CCD drive signal CT in synchronization with the synchronization signal SS.
- the line sensors 5a to 5c of the CCD 5 perform charge accumulation and image signal output when the CCD drive signal CT is output (see FIG. 5G).
- a / D conversion units 21 a to 21 c A / D convert the image signals from the CCD 5 to generate image data, and the image data is converted into the data processing unit 22. Output to.
- the R image data (R data) is also output to the lighting control circuit 10.
- the adjustment unit 33 of the lighting control circuit 10 compares the level of the R data with the reference level for W (White).
- the level of the R data is higher than the reference level, the lighting time (W set value 32a) of the W light source 8a is shortened.
- the level of the R data is lower than the reference level, control is performed so that the lighting time of the W light source 8a is lengthened.
- the level of R data to be compared may be a level of data for one pixel, or may be a level obtained from a plurality of pixels (for example, an average value of pixel data for one line). .
- the data processing unit 22 performs signal processing on the R data, G data, and B data as shown in FIG. 2, and stores them in the buffer memories 23a to 23c. Next, the signal-processed data is output in order from the buffer memory 23a and written into the frame memory 24 as shown in FIG.
- the light source that emits light is switched from the W light source 8a to the IR light source 8b as shown in FIG. Then, the lighting control circuit 10 and the LED driving circuit 9 turn on the IR light source 8b with the lighting time (IR set value 32b) set for infrared light as in the case of the W light source 8a (FIG. 5D). (Refer to FIG. 5G).
- the adjustment unit 33 of the lighting control circuit 10 compares the level of the R data with the reference level for IR (InfraRed), similarly to the case where the W light source 8a is turned on.
- the lighting time of the IR light source 8b is adjusted according to the difference.
- infrared R data, G data, and B data are acquired.
- the infrared light R data, G data, and B data are subjected to signal processing by the data processing unit 22 and then written to the frame memory 24 (see FIG. 6).
- the light source that emits light is switched from the IR light source 8b to the UV light source 8c, as shown in FIG. Then, the reading of the (n + 2) th line is executed.
- the UV light source 8c is turned on for the lighting time (UV setting value 32c) set for ultraviolet light, and ultraviolet light R data, G data, and B data are acquired. .
- the adjustment unit 33 of the lighting control circuit 10 compares the level of the R data with the reference data for UV (UltraViolet IV) and sets the lighting time of the UV light source 8c according to the difference. adjust.
- the level of the acquired R data is compared with the reference level for each light source for each of white light, infrared light, and ultraviolet light, so that the light source mounted on the image reading apparatus 1 is used.
- Each lighting time is adjusted in accordance with the characteristics.
- the lighting time is automatically adjusted without individually configuring a circuit or the like optimized for the light emission wavelength.
- a plurality of circuit constants and control pulse widths corresponding to various emission wavelengths can be determined in advance.
- the lighting time is adjusted only once for one line in the blank area of the document 2 or one line in the blank area is set for each page of the document 2. It is preferable to adjust the lighting time as a target.
- the lighting time may be adjusted using a dedicated white reference sheet before reading the document 2.
- the white reference sheet may be a separate sheet for W, IR, and UV, or may be a sheet obtained by joining them together.
- the light source that emits light is switched in the order of W light source 8a, IR light source 8b, and UV light source 8c.
- each light source is turned on for a set lighting time (see FIGS. 5C to 5E). Then, while repeating the light source switching process, the image data for one frame is acquired line by line and stored in the frame memory 24 in order.
- the image data for one frame is separated into the image data for each type of irradiation light.
- Each separated image data is output to a subsequent inspection apparatus or display device and used for inspection processing or the like.
- the W light source 8a, the IR light source 8b, and the UV light source 8c are switched to irradiate light onto the CCD 5, the lighting time of the light source having a wavelength with high sensitivity of the CCD 5 is shortened and the sensitivity is improved. Increase the lighting time of the low wavelength light source. Therefore, even if any light is irradiated on the CCD 5, the image can be read with a light amount corresponding to the sensitivity of the CCD 5. Therefore, it is possible to prevent the brightness from being extremely different between the W image, the IR image, and the UV image. As a result, an image with stable brightness can be obtained.
- the level difference between the image signals of the W image, IR image and UV image can be kept small. As a result, appropriate signal processing can be easily performed on each image signal. For each of the W image, the IR image, and the UV image, there is no need to arrange separate signal processing circuits, and one signal processing circuit may be installed. Therefore, the device configuration is simplified and the cost of the device is reduced.
- an image is read while the W light source 8a, the IR light source 8b, and the UV light source 8c are switched line-sequentially, and image data for one frame stored in the frame memory 24 is image data for each light type.
- image data for one frame stored in the frame memory 24 is image data for each light type.
- the image reading apparatus according to the present invention is not limited to an image reading apparatus applied to a printed matter inspection apparatus.
- the image reading apparatus according to the present invention can be widely applied regardless of the field as long as the original image is read by switching irradiation between visible light and invisible light.
- white light is used as visible light, and infrared light and ultraviolet light are used as invisible light.
- other types of light can be used as visible light.
- Other types of light can be used.
- a color CCD is used as the image sensor, but a monochrome CCD without a color filter can also be used as the image sensor.
- the W light source 8a, the IR light source 8b, and the UV light source 8c are switched in units of one line, but the unit of switching is not limited to one line.
- the W light source 8a, the IR light source 8b, and the UV light source 8c may be switched in units of a plurality of lines.
- R data is used as the level reference data.
- the level reference data is output from the A / D conversion units 21a to 21c.
- One of these can be arbitrarily selected and used. That is, G data and B data can also be used.
- image data for one frame is separated into image data for each light type.
- Separate storage areas 24 a to 24 c may be secured for each light type, and the image data may be separated when the image data is written into the frame memory 24.
- the carrier cycle signal VS is output to the synchronization signal generation circuit 4, and a signal having both the phase and the cycle coincided with the carrier cycle signal VS is generated as the synchronization signal SS. It is not essential to feed back the VS to the synchronization signal generation circuit 4. If the document running speed is constant, a signal having the same cycle as the conveyance cycle signal VS and out of phase may be generated as the synchronization signal SS. That is, even if the transport cycle signal VS and the synchronization signal SS are out of phase, synchronization between the reading operation of the CCD 5 and the light emission operation of the LED 8 (see (b) to (g) of FIG. 5) is ensured. As a result, the image is not affected.
- the first light source lighting time and the second light source lighting time are set so that the level of the image signal when the visible light is irradiated is substantially equal to the level of the image signal when the non-visible light is irradiated. Image reading apparatus.
- a difference between the first light source lighting time and the second light source lighting time between the level of the image signal when the visible light is irradiated and the level of the image signal when the non-visible light is irradiated is provided in the subsequent stage of the image sensor.
- An image reading apparatus set to be within an input allowable range of the signal processing means.
- An image reading apparatus equipped with such an adjustment unit can appropriately use a light source without separately configuring a circuit optimized for the light emission wavelength even when an arbitrary light emission wavelength is selected as the light source. The lighting time suitable for the light emission wavelength can be set.
- An image reading apparatus provided with a separating unit that separates an image signal output from an image sensor into an image signal when irradiated with visible light and an image signal when irradiated with invisible light.
- An image reading apparatus provided with such a separating unit can simultaneously acquire a visible light image and a non-visible light image in one reading operation, thereby improving the speed of the reading process. be able to. Also, the device cost is reduced.
- the separating means includes a memory that stores an image signal output from the image sensor and a memory control unit that controls writing and reading operations of the memory, and reads the image signal stored in the memory for each type of irradiation light.
- An image reading apparatus configured as described above.
- the separation means stores an image signal output from the image sensor, and stores a first storage area for storing an image signal when irradiated with visible light and a second storage for storing an image signal when irradiated with invisible light.
- a memory control unit that controls the operation of writing data to the memory and reading data from the memory, while distributing the image signal output from the image sensor for each type of irradiation light
- An image reading apparatus configured to write to a first storage area and a second storage area of a memory.
- An image reading device in which the light source is configured to irradiate visible light and invisible light in units of lines.
- An image reading device in which the invisible light is infrared light or ultraviolet light, or infrared light and ultraviolet light.
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Abstract
Description
2 原稿
3 搬送装置
4 同期信号生成回路
5 CCD
5a~5c ラインセンサ
6 CCD駆動回路
7 信号処理回路
8 LED
8a W光源
8b IR光源
8c UV光源
9 LED駆動回路
10 点灯制御回路
21a~21c A/D変換部
22 データ処理部
23a~23c バッファメモリ
24 フレームメモリ
25 メモリ制御部
31 カウンタ
32 レジスタ
33 調整部
34 比較部
35 LS・PS生成部
Claims (9)
- 可視光と非可視光とを切り替えて照射しながら原稿の画像を読み取る画像読取装置であって、
前記原稿の画像を読み取って画像信号を出力するイメージセンサと、
可視光と非可視光とを切り替え照射する光源と、
前記光源の点灯時間を制御する点灯制御手段とを備え、
前記点灯制御手段は、非可視光を照射する際の第1の光源点灯時間を、可視光を照射する際の第2の光源点灯時間よりも長くする
ことを特徴とする画像読取装置。 - 前記第1の光源点灯時間および前記第2の光源点灯時間は、可視光を照射したときの画像信号のレベルと非可視光を照射したときの画像信号のレベルとが実質的に等しくなるように設定されている
請求項1に記載の画像読取装置。 - 前記第1の光源点灯時間および前記第2の光源点灯時間は、可視光を照射したときの画像信号のレベルと非可視光を照射したときの画像信号のレベルと差が、前記イメージセンサの後段に設けられる信号処理手段の入力許容範囲内に収まるように設定されている
請求項1に記載の画像読取装置。 - 前記イメージセンサから出力される画像信号のレベルを所定の基準レベルと比較し、画像信号のレベルと基準レベルとの差分に応じて前記第1および第2の光源点灯時間を伸縮する調整部を備える
請求項1、請求項2または請求項3に記載の画像読取装置。 - 前記イメージセンサから出力される画像信号を、可視光を照射したときの画像信号と非可視光を照射したときの画像信号とに分離する分離手段を備える
請求項1から請求項4のうちのいずれか1項に記載の画像読取装置。 - 前記分離手段は、
前記イメージセンサから出力される画像信号を記憶するメモリと、
前記メモリの書き込みおよび読み出し動作を制御するメモリ制御部とを含み、
前記メモリに記憶される画像信号を照射光の種類毎に読み出す
請求項5に記載の画像読取装置。 - 前記分離手段は、
前記イメージセンサから出力される画像信号を記憶するとともに、可視光を照射したときの画像信号を記憶する第1の記憶領域と非可視光を照射したときの画像信号を記憶する第2の記憶領域とを有するメモリと、
前記メモリへのデータの書き込みおよび前記メモリからのデータの読み出し動作を制御するメモリ制御部とを含み、
前記イメージセンサから出力される画像信号を照射光の種類毎に振り分けながら前記メモリの第1の記憶領域と第2の記憶領域とに書き込む
請求項6に記載の画像読取装置。 - 前記光源は、可視光と非可視光とをライン単位で切り替えて照射する
請求項1から請求項7のうちのいずれか1項に記載の画像読取装置。 - 前記非可視光が、赤外光もしくは紫外光、または赤外光および紫外光である
請求項1から請求項8のうちのいずれか1項に記載の画像読取装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/263,772 US9294651B2 (en) | 2009-04-13 | 2010-04-08 | Image reading device for reading document images with visible light and non-visible light being switchingly applied |
CN201080016506.1A CN102396214B (zh) | 2009-04-13 | 2010-04-08 | 图像读取设备 |
EP10764237.3A EP2421238B1 (en) | 2009-04-13 | 2010-04-08 | Image reading device |
KR1020117023876A KR101299813B1 (ko) | 2009-04-13 | 2010-04-08 | 화상 판독 디바이스 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009096580A JP5067638B2 (ja) | 2009-04-13 | 2009-04-13 | 画像読取装置 |
JP2009-096580 | 2009-04-13 |
Publications (1)
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WO2010119650A1 true WO2010119650A1 (ja) | 2010-10-21 |
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EP (1) | EP2421238B1 (ja) |
JP (1) | JP5067638B2 (ja) |
KR (1) | KR101299813B1 (ja) |
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Also Published As
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CN102396214A (zh) | 2012-03-28 |
US20120127543A1 (en) | 2012-05-24 |
EP2421238A4 (en) | 2013-06-26 |
CN102396214B (zh) | 2015-04-29 |
JP2010251872A (ja) | 2010-11-04 |
EP2421238B1 (en) | 2019-01-02 |
JP5067638B2 (ja) | 2012-11-07 |
KR101299813B1 (ko) | 2013-08-23 |
EP2421238A1 (en) | 2012-02-22 |
TWI459794B (zh) | 2014-11-01 |
TW201119345A (en) | 2011-06-01 |
US9294651B2 (en) | 2016-03-22 |
KR20110135964A (ko) | 2011-12-20 |
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