CN201489281U

CN201489281U - Image shadow eliminator of printer

Info

Publication number: CN201489281U
Application number: CN200920209453XU
Authority: CN
Inventors: 鞠庆丰; 王正良; 黄胜
Original assignee: Sharp Office Equipment Changshu Co Ltd
Current assignee: Sharp Office Equipment Changshu Co Ltd
Priority date: 2009-09-09
Filing date: 2009-09-09
Publication date: 2010-05-26
Anticipated expiration: 2019-09-09

Abstract

The utility model relates to an image shadow eliminator of a printer, which comprises a scanning component, an image processing unit and a printing component. The scanning component scans part of or the entire area on an original table of the printer to output an electric image signal of the area, wherein a manuscript to be printed is arranged at a preset position of the area. The image processing unit is connected with the scanning component to process the electric image signal to acquire image data, wherein the image processing unit deletes the image data which is out of the preset position of the original table according to preset coordinate information, and only saves the image data of the preset position of the original table. The printing component is connected with the image processing unit, and the image processing unit outputs the image data. The image shadow eliminator of the printer can be applied to the printing of an identification card for eliminating the shadow at the front end.

Description

The image shade cancellation element of duplicating machine

Technical field

The utility model relates to duplicating machine, especially relates to the image shade cancellation element of duplicating machine.

Background technology

I.D. all needs to duplicate in many occasions as the effective voucher that confirms personal identification.What generally use at present is that duplicating machine carries out the I.D. duplicating, and copy is an A4 paper.When using existing duplicating machine that I.D. is duplicated, duplicating machine also carries out scanner uni to the zone outside the I.D. to be handled.And because factors such as duplicating machine light leak, the local edge at the I.D. duplicating machine produces shade easily, and the duplicating machine edge of being everlasting when this shows as produces black line, influences the quality of pattern, and waste printing ink.

The utility model content

Technical problem to be solved in the utility model provides a kind of image shade cancellation element that can eliminate the duplicating machine of duplicating machine edge shade.

The utility model is to solve the problems of the technologies described above the image shade cancellation element that the technical scheme that adopts provides a kind of duplicating machine, comprises scan components, graphics processing unit and print components.Scan components scans the part or all of zone that is positioned over the duplicating machine document board, and to export the electric image signal in described zone, original copy wherein to be duplicated is positioned over the precalculated position in described zone.Graphics processing unit connects scan components and handles described electric image signal to obtain view data, wherein the predetermined coordinate information of graphics processing unit basis is deleted the view data outside the precalculated position that is positioned at document board in the described zone, only keeps the view data in the precalculated position of document board.Print components connects graphics processing unit, the view data of print image processing unit output.

In the I.D. shade cancellation element of above-mentioned duplicating machine, comprise that also image storage unit is in order to preserve the view data of handling through graphics processing unit.

In the I.D. shade cancellation element of above-mentioned duplicating machine, scan components comprises scanning element and photo-sensitive cell.Original copy on the scanning element scan manuscript platform produces the image optical signalling of original copy, and photo-sensitive cell reads the image optical signalling through scanning element scanning, and is converted to above-mentioned electric image signal.

In the I.D. shade cancellation element of above-mentioned duplicating machine, above-mentioned precalculated position can be the middle of Width of the document board of rectangle, also can be a jiao of document board of rectangle.

The utility model is owing to adopt above technical scheme, make it compared with prior art, handle by effective image of only treating printed copy and to cast out other regional images, eliminated the shade of copy, obtain better to duplicate quality and saved ink consumption.

Description of drawings

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, wherein:

Fig. 1 is the copier structure block diagram of the utility model one embodiment.

Fig. 2 is placement and the scanning synoptic diagram of I.D. on duplicating machine of the utility model one embodiment.

Fig. 3 A-3C illustrates the different placement locations of I.D. in the utility model.

The effect that Fig. 4 A and 4B illustrate the copy method of traditional copy method and the utility model one embodiment respectively compares.

Embodiment

Fig. 1 is the copier structure block diagram of the utility model one embodiment.With reference to shown in Figure 1, in the duplicating machine of the utility model one embodiment, be provided with document board 10, scan components 20, graphics processing unit 32 and print components 40, composition diagram is as the shade cancellation element.

In the present embodiment, document board 10 is rectangular, and usually is made of clear glass signature plate, is used to place original copy to be duplicated 12, for example I.D..With reference to shown in Figure 2, in one embodiment, I.D. can vertically be placed on the middle on the Width (being main scanning direction X) in document board 10 left sides.In other embodiments, I.D. can laterally be placed on middle on the Width in document board 10 left sides respectively, vertically be placed on a jiao of document board and laterally be placed on a jiao of document board, shown in Fig. 3 A-3C.

The cover plate of a shading of document board 10 operated by rotary motion (figure does not show) is to cover original copy 12 when duplicating.

Scan components 20 comprises scanning element 22 and photo-sensitive cell 24.Scanning element 22 can be located at document board 10 belows, by light the original copy 12 that is positioned on the document board is scanned the image optical signalling that produces original copy.Photo-sensitive cell 30 typically adopts CCD (charge-coupled image sensor) to constitute, and the image optical signalling that scanning obtains can enter CCD, is converted to electric image signal, as the output of scan components.Scan components 20 can scan whole document board zone and obtain electric image signal, and the document board subregion that also can scan the preliminary dimension size obtains this regional electric image signal, as long as guarantee that original copy 12 is to drop in this zone.

Image processing unit 32 can be arranged on the MCU substrate 30 of duplicating machine, and connects the treated view data of an image storage unit 34 temporary preservations alternatively.Image processing unit 32 is connected to photo-sensitive cell 30 to read in the visual electric signal of scanning, image is handled, as the amplification of image, dwindle, color space changes (as rgb space to the CMYK space) etc., obtains view data.

In the present embodiment, in order to remove the black line that influences photocopying effect, image processing unit 32 also needs further to dismiss in the view data of above-mentioned zone view data corresponding to the zone beyond the original copy 12 according to predetermined coordinate information, and only keeps the view data corresponding to described document board precalculated position.Specifically, duplicating machine can specify original copy 12 to be positioned over a certain precalculated position in the document board to the user, and the coordinate information in this precalculated position that in image processing unit 32, prestores.This coordinate information can by four points (x1, y1), (x2, y2), (x3, y3), and (x4 y4) determines, also can be only by (x1, y1), (x2, y2) two points are determined, and this is because the black line of required removal only need can be realized by the cutting of directions X, and this will launch to describe later.Image processing unit 32 can be according to coordinate information or its variant through conversion, determine the valid data (data that promptly comprise original image) in the view data exactly, and delete other invalid datas, obtain view data thus corresponding to described document board precalculated position.

With 600dpi maximum scan amplitude is that the document board of A3 is that example describes.As shown in Figure 2, each stain is represented an analyzing spot, and the spacing between the analyzing spot is:

25.4mm/600＝0.042mm。

The duplicating machine scan mode is a line sweep, and principle of work is earlier with main scanning direction X scanning first scan line as shown in Figure 2, since the 1st o'clock up to the 7400th image processing unit that all reads in duplicating machine.After first scan line all reads, the camera lens of scanning element 22 moves to second scan line along sub scanning direction Y, all read in image processing unit 32 since the 1st o'clock up to the 7400th again, the analyzing spot up to the image in whole document board zone all reads in by that analogy.

Because left side glass is given as security a gap is always arranged between plate and the original copy cover plate, so first end parts has shade, shown in Fig. 4 A.

In improvement embodiment of the present utility model, I.D. is still given as security plate as figure along left side glass and is placed on middle.The I.D. length of China is 85.5mm, and the effective scanning point of I.D. on main scanning direction is 2020 (85.5mm/25.4mm*600=2020) of middle so.When the data of 7400 width were read in image processing unit 32, image processing unit 32 can be removed the view data of other useless analyzing spots according to aforesaid preset coordinates information, thereby in the middle of staying

2020The valid data of some width are used for follow-up printing.

Print components 40 connects graphics processing unit 32, and further comprises laser scan unit 42 and light drum assembly 44.Send print components 40 after pictorial data is handled well to and print, to form copy.

When double-sided copying, can scan twice by document board, the tow sides of the image print of twice scanning to a piece of paper.Correspondingly graphics processing unit 32 can be temporary to image storage unit 34 primary image, and after the Flame Image Process that waits the second time had been got well, graphics processing unit 32 can send two images to print components 40 successively and print.

Fig. 4 A illustrates the duplicating machine synoptic diagram of traditional copy method.Fig. 4 B illustrates the duplicating machine synoptic diagram of the duplicating machine of the utility model one embodiment.Shown in Fig. 4 B, in copy, 2 black lines that form in traditional duplicating mode can be eliminated.

Therefore, the image shade cancellation element of the duplicating machine of the utility model the foregoing description, handle by effective image of only treating printed copy and to cast out other regional images, eliminated the shade of copy, obtain better to duplicate quality and saved ink consumption.

Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.

Claims

1. the image shade cancellation element of a duplicating machine is characterized in that, comprising:

Scan components scans the part or all of zone that is positioned over the duplicating machine document board, and to export the electric image signal in described zone, original copy wherein to be duplicated is positioned over the precalculated position in described zone;

Graphics processing unit, connect described scan components, handle described electric image signal to obtain view data, the predetermined coordinate information of wherein said graphics processing unit basis is deleted the view data outside the precalculated position that is positioned at described document board in the described zone, only keeps the view data in the precalculated position of described document board; And

Print components connects described graphics processing unit, prints the view data of described graphics processing unit output.

2. the I.D. shade cancellation element of duplicating machine as claimed in claim 1 is characterized in that, also comprises image storage unit, in order to preserve the view data of handling through graphics processing unit.

3. the I.D. shade cancellation element of duplicating machine as claimed in claim 1 is characterized in that described scan components comprises:

Scanning element, the original copy on the scan manuscript platform produce the image optical signalling of original copy;

Photo-sensitive cell reads the image optical signalling through described scanning element scanning, and is converted to described electric image signal.

4. the I.D. shade cancellation element of duplicating machine as claimed in claim 1 is characterized in that, described precalculated position is the middle of Width of the document board of rectangle.

5. the I.D. shade cancellation element of duplicating machine as claimed in claim 1 is characterized in that, described precalculated position is a jiao of document board of rectangle.