CN101686304B

CN101686304B - Image reading device with paging function

Info

Publication number: CN101686304B
Application number: CN2008102001997A
Authority: CN
Inventors: 黄志芳
Original assignee: Hongguang Precision Industry Suzhou Co Ltd; Avision Commercial Technology Suzhou Co Ltd
Current assignee: Hongguang Precision Industry Suzhou Co Ltd; Avision Commercial Technology Suzhou Co Ltd
Priority date: 2008-09-22
Filing date: 2008-09-22
Publication date: 2011-06-01
Anticipated expiration: 2028-09-22
Also published as: CN101686304A

Abstract

The invention discloses an image reading device with a paging function. In the device, an automatic paper feeding device transmits a first paper sheet and a second paper sheet along a paper feeding channel through an opening. A paging reference piece is configured at the opening, and contains a specific part, wherein the specific part refers to the portion corresponding to a scanning line of a scanning module. The scanning module scans the first and the second paper sheets passing through the opening to generate continuous images. An image processing unit is coupled with the scanning module for receiving the continuous images and processing the continuous images into a separated first paper image corresponding to the first paper sheet and a separated second paper image corresponding to the second paper sheet according to the special image containing the specific part.

Description

Image reading device with two-page separation function

Technical field

The present invention is about a kind of image reading device, especially about a kind of image reading device with two-page separation function.

Background technology

Traditional sheet-fed image treatment facility in order to want to provide the function of automatic scan multiple page documents, need be equipped with usually that the paper induction installation responds to whether paper is about to or by certain ad-hoc location.For example, induction installations such as electronic type, mechanical type or optical profile type are configured on the paper path, whether be about to by position in order to the induction paper corresponding to the scan line of scan module, or in order to the induction paper whether by position corresponding to the scan line of scan module.By the information of induction gained, adjacent two pages image can be separated, and reaches the purpose of paging.

Yet, the paper induction installation the increase that will cause equipment cost is set.The mechanical type induction installation needs enough separation spacings usually.If the separation spacing is too short, then have following error situations: the mechanical type induction installation is not sensed first paper as yet and has been broken away from this induction installation, and second paper is run into the mechanical type induction installation, makes the mechanical type induction installation fail to judge that first paper has broken away from and situation that second paper has arrived.

Therefore, provide a kind of image reading device that has low cost and do not need too big separation gap, real want the solution that realizes for the present invention with two-page separation function.

Summary of the invention

An object of the present invention is to provide a kind of image reading device, the advantage that it has low cost and does not need too big separation gap with two-page separation function.

For reaching above-mentioned purpose, the invention provides a kind of image reading device with two-page separation function, it comprises housing, automatic document feeder, paging reference plate, scan module and image process unit.Automatic document feeder is connected with housing, has paper-feeding channel, and paper-feeding channel has opening, and automatic document feeder passes through opening in order to first paper and second paper are transmitted along paper-feeding channel.The paging reference plate is configured in opening part, comprises specific part on the paging reference plate, wherein said specific part refer to scan module scan line the part of corresponding position.Scan module is arranged in the housing, and is positioned at the position in the face of opening and paging reference plate, in order to first paper and second paper of scanning by opening, to produce continuous image.Image process unit is coupled in scan module, and in order to the reception continuous image, and foundation comprises the specific image of specific part and continuous image is processed into first paper image of correspondence first paper separately and the second paper image of corresponding second paper.

For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below.

Description of drawings

Fig. 1 shows the schematic diagram according to the image reading device with two-page separation function of preferred embodiment of the present invention.

Fig. 2 and 3 shows the schematic diagram of cutting apart of continuous image.

The schematic diagram of several embodiment of Fig. 4 to 6 display paging reference plate.

The schematic diagram that the oblique line of Fig. 7 displayed map 6 is read by image sensor.

Embodiment

The main spirit of the present invention is to make special token on the paging reference plate that the scanning area of the scan module of image reading device is faced.When paper passed through scanning area, the special token of doing was covered by paper on the paging reference plate.When not having paper to be positioned at scanning area, the special token of doing can not covered by paper on the paging reference plate.Compare having or not of special token in the image that utilizes the scan module scanning document to be obtained, and judge the boundary line of image paging.

Fig. 1 shows the schematic diagram according to the image reading device with two-page separation function of preferred embodiment of the present invention.Fig. 2 and 3 shows the schematic diagram of cutting apart of continuous image.As shown in Figures 1 to 3, the image reading device with two-page separation function of present embodiment comprises housing 31, automatic document feeder 10, paging reference plate 20, scan module 32 and image process unit 40.

Automatic document feeder 10 can be a kind of automatic paper feeder (Automatic Document Feeder), and it is connected housing 31, and comprises paper-feeding channel 11.Paper-feeding channel 11 has opening 12.Automatic document feeder 10 is in order to transmit the first paper S1 and the second paper S2 by opening 12 along paper-feeding channel 11.In the present embodiment, first roller 13 of automatic document feeder 10 and friction element 14 actings in conjunction are to reach the function of the first paper S1 and the second paper S2 separation.Second roller 15 and passive roller 16 actings in conjunction are to present out automatic document feeder 10 with the first paper S1 and the second paper S2.

Paging reference plate 20 is configured in opening 12 places and in the face of scan module 32, comprises specific part 22 on the paging reference plate 20, the scan line that described specific part 22 is a scan module 32 (scan line) the part of corresponding position.In the present embodiment, paging reference plate 20 is positioned on the wall 11A of paper-feeding channel 11.

Scan module 32 is configured in the housing 31, and is positioned at the position in the face of opening 12 and paging reference plate 20, produces continuous image 90 in order to the first paper S1 and the second paper S2 that scans by opening 12.Housing 31 has platform 36, platform 36 is towards the opening 12 of automatic document feeder 10, and in order to support the first paper S1 and the second paper S2 that paper-feeding channel 11 is transmitted, as the first paper S1 and the second paper S2 during by opening 12, scan module 32 first and second paper of scanning and produce continuous image 90.In the present embodiment, scan module 32 is a kind of CCD formula scan module, and it comprises light source 321, speculum 322, lens 323 and image sensor 324.Though scan module 32 is a CCD formula scan module in the present embodiment, the present invention still is not limited thereto, and in other embodiments, scan module 32 can be a kind of CIS formula scan module.

In the present embodiment, scan module 32 can move with respect to opening 12 along being arranged on the guide rod 34 in the housing 31.Though scan module 32 can move with respect to opening 12 along guide rod 34 in the present embodiment, the present invention still is not limited thereto, and in other embodiments, scan module 32 is designed to and can not moves with respect to opening 12.

In the present embodiment, as shown in Figure 2, continuous image 90 comprises the first paper image 92, the second paper image 93 and three specific images 91.The first paper image 92 is to be produced by the scan module 32 scanning first paper S1, and corresponding to the first paper S1.The second paper image 93 is to be produced by the scan module 32 scanning second paper S2, and corresponding to the second paper S2.Each specific image 91 is made up of one or more specific part 22, and these specific images 91 are connected to the leading edge E11 of the first paper image 92, between the trailing edge E12 of the first paper image 92 and the leading edge E21 of the second paper image 93, and the trailing edge E22 of the second paper image 93; But the present invention is not limited to this, continuous image 90 also can only comprise the first paper image 92, the second paper image 93 and in the middle of the first paper image 92 and the second paper image 93 and comprise the specific image 91 of specific part 22, it is connected with the trailing edge E12 of the first paper image 92 and the leading edge E21 of the second paper image 93 respectively, image process unit 40 only need be removed the specific image 91 in the continuous image 90, can reach the effect of paging.

Image process unit 40 can be positioned at the inside or the outside of image reading device.Image process unit 40 can for example be the processor that is coupled in scan module 32, or the application program in the PC.Image process unit 40 is coupled in described scan module 32, in order to receive continuous image 90, and in continuous image 90, cut apart and remove specific image 91, and continuous image 90 is processed into the first paper image 92 of the correspondence first paper S1 separately and the second paper image 93 of the corresponding second paper S2, as shown in Figure 3, to reach the function of paging.

Wherein must be noted that the specific part 22 on paging reference plate 20, is the relative position of the scan line (scan line) of the light source 321 paging reference plate 20 that is radiated at.In the present embodiment, if the corresponding scanning result that the specific image 91 that the specific part 22 on the image process unit 40 scanning paging reference plate 20 is produced can't corresponding image process unit 40 sets, then image process unit 40 is not done paging to continuous image 90 and is handled; If the described corresponding scanning result that the specific image 91 that produced of scanning specific part 22 can corresponding image process unit 40 sets is then done paging to continuous image 90 and is handled.The image reading device of present embodiment can also comprise paper box 50 and lead paper element 60.Paper box 50 is installed in automatic document feeder 10, and is connected to paper-feeding channel 11, and paper box 50 is in order to carry the paper S1 and the second paper S2.Lead paper element 60 and be arranged on opening 12, in order to guide the first paper S1 and the second paper S2 leaves opening 12.

Except the function of reaching the image paging, scan module 32 is also in order to scanning paging reference plate 20, the brightness that comes the light source 321 of correct scan module 32 with foundation paging reference plate 20.For example, paging reference plate 20 can have the section corresponding to the standard white of GTG value 255, and after the image reading device start, scan module 32 is to this section scanning, to judge the difference of its GTG value and 255.For example, the GTG value that scans out is 240, and then image reading device or image processing software can utilize and GTG value 240 be compensated into 255 penalty function, and the scan module 32 follow-up GTG values that scan the image that obtains are compensated.

The schematic diagram of several embodiment of Fig. 4 to 6 display paging reference plate.As shown in Figure 4, paging reference plate 20 can be moved, to switch different reference patterns in response to different original copys, make the different piece of paging reference plate 20 be scanned module 32 scannings, with the style of avoiding taking place the first paper S1 or the second paper S2 and the same or analogous situation of style after the scanning of paging reference plate, may and cause that separation is incorrect.The direction that paging reference plate 20 can be moved can be the direct of travel D1 that is parallel to the first paper S1; Perhaps, the direction that paging reference plate 20 can be moved is the direct of travel D1 perpendicular to the first paper S1.Perhaps, the direction that paging reference plate 20 can be moved is the direct of travel D1 that is not orthogonal to and is not parallel to the first paper S1.

In the embodiment that Fig. 4 disclosed, paging reference plate 20 comprises three straight-line pattern 21A that are parallel to the direct of travel D1 of the first paper S1, and can also comprise straight-line pattern 21B and triangle pattern 21C, when the scanning result of paging reference plate 20 scanning specific parts 22 similar with the paper style that scans of want, just can see through the mode of aforementioned mobile paging reference plate 20 this moment, and make described straight-line pattern 21B or described triangle pattern 21C move to the specific part 22 of paging reference plate 20 and the style of the specific image 91 after the scanning is changed, to reach the function of correct paging.For example, when paging reference plate 20 is moved, so that specific part 22 as shown in Figure 5 is when being scanned, because intersect at 5 points with straight-

line pattern

21A and 21B, so the situation of 5 lines will appear in the specific image that is scanned corresponding to the specific part 22 of the scan line of paging reference plate 20.Because straight-line pattern 21A can be black and white or colored straight line, and scan module 32 can carry out black and white or chromoscan, so specific image 91 can be black-and-white image or chromatic image.

Shown in another embodiment that Fig. 6 disclosed, paging reference plate 20 comprises oblique line 21D, the angle of the direct of travel D1 of the oblique line and the first paper S1 for example is 30 degree, 45 degree, 60 degree etc., and can also comprises straight-line pattern 21B and triangle pattern 21C less than 90 degree.Because oblique line 21D can be black and white or colored straight line, and scan module 32 can carry out black and white or chromoscan, so specific image 91 can be black-and-white image or chromatic image.

The schematic diagram that the oblique line of Fig. 7 displayed map 6 is read by image sensor.As shown in Figure 7, image sensor 324 has redness, green and blue three

row sensing cell

324R, 324G and 324B.Suppose that oblique line 21D is the oblique line of black and white, then image sensor 324 GTG value that position x1 sensed for (R, G, B)=(255,255,0); In the GTG value that position x2 sensed be (R, G, B)=(255,0,255); And in the GTG value that position x3 sensed be (R, G, B)=(0,255,255).Therefore, at position x1, x2 and x3, the color that is sensed is respectively blue-green (Cyan), aubergine (Magenta) and yellow (Yellow).By the data of sensing gained, it can reach the function of paging.

By the above embodiment of the present invention, can save the setting of paper inductor fully, in order to reducing cost, and can reach accurate two-page separation function.About the requirement in separation gap, this case inventor finds that the mechanical type induction installation of known technology can't handle the separation gap less than 1 millimeter, and the present invention can handle 1 millimeter or even littler separation gap, and reach the effect of image paging.

The specific embodiment that is proposed in the detailed description of preferred embodiment is only in order to convenient explanation technology contents of the present invention, but not with narrow sense of the present invention be limited to the foregoing description, under the situation that does not exceed spirit of the present invention and following claim, the many variations of being done is implemented, and all belongs to scope of the present invention.

The main element symbol description

D1: direct of travel

E11: leading edge

E12: trailing edge

E21: leading edge

E22: trailing edge

S1: first paper

S2: second paper

10: automatic document feeder

11: paper-feeding channel

11A: wall

12: opening

13: the first rollers

14: friction element

15: the second rollers

16: passive roller

20: the paging reference plate

21A: straight line

21B: straight line

21C: triangle pattern

21D: oblique line

22: specific part

31: housing

32: scan module

34: guide rod

36: platform

40: image process unit

50: paper box

60: lead the paper element

90: continuous image

91: specific image

92: the first paper images

93: the second paper images

321: light source

322: speculum

323: lens

324: image sensor

324R, 324G, 324B: sensing cell

Claims

1. the image reading device with two-page separation function is characterized in that, comprises:

Housing;

Automatic document feeder is connected described housing, and described automatic document feeder comprises paper-feeding channel, and described paper-feeding channel has opening, and described automatic document feeder is in order to transmit first paper and second paper by described opening along described paper-feeding channel;

The paging reference plate is configured in described opening part, and described paging reference plate comprises specific part, wherein said specific part refer to scan module scan line the part of corresponding position;

Scan module is arranged in the described housing, and is positioned at the position in the face of described paging reference plate, produces continuous image in order to described first paper and described second paper that scans by described opening; And

Image process unit, be coupled in described scan module, in order to receiving described continuous image, and be processed into first paper image of corresponding described first paper separately and the second paper image of described second paper of correspondence according to the specific image that comprises described specific part and with described continuous image.

2. image reading device as claimed in claim 1 is characterized in that, described paging reference plate is positioned on the wall of described paper-feeding channel.

3. image reading device as claimed in claim 1 is characterized in that, described paging reference plate can be moved.

4. image reading device as claimed in claim 3 is characterized in that, the direction that described paging reference plate can be moved is parallel to the direct of travel of described first paper.

5. image reading device as claimed in claim 3 is characterized in that, the direction that described paging reference plate can be moved is perpendicular to the direct of travel of described first paper.

6. image reading device as claimed in claim 3 is characterized in that, the different piece of described paging reference plate is able to be scanned by described scan module.

7. image reading device as claimed in claim 1 is characterized in that described paging reference plate comprises the straight line of the direct of travel that is parallel to described first paper.

8. image reading device as claimed in claim 7 is characterized in that, each described specific image is a black-and-white image.

9. image reading device as claimed in claim 7 is characterized in that, each described specific image is a chromatic image.

10. image reading device as claimed in claim 1 is characterized in that, described paging reference plate comprises oblique line, and the angle of the direct of travel of described oblique line and described first paper is less than 90 degree.

11. image reading device as claimed in claim 10 is characterized in that, each described specific image is a black-and-white image.

12. image reading device as claimed in claim 10 is characterized in that, each described specific image is a chromatic image.

13. image reading device as claimed in claim 1 is characterized in that, also comprises paper box, it is installed in described automatic document feeder, and is connected to described paper-feeding channel, and described paper box is in order to carry described first paper and described second paper.

14. image reading device as claimed in claim 1 is characterized in that, also comprises:

Lead the paper element, be arranged on described opening, in order to guide described first paper and described second paper leaves described opening.

15. image reading device as claimed in claim 1 is characterized in that, described scan module can move with respect to described opening.

16. image reading device as claimed in claim 1 is characterized in that, described scan module can not move with respect to described opening.

17. image reading device as claimed in claim 1 is characterized in that, described scan module also scans described paging reference plate, with the brightness of proofreading and correct the light source of described scan module according to described paging reference plate.

18. image reading device as claimed in claim 1 is characterized in that, described automatic document feeder is an automatic paper feeder.

19. image reading device as claimed in claim 1 is characterized in that, described paging reference plate also comprises triangle pattern.