CN101489013B

CN101489013B - Scanner

Info

Publication number: CN101489013B
Application number: CN200910077309XA
Authority: CN
Inventors: 白明; 方凌云
Original assignee: HANGZHOU HUAKAI TECHNOLOGY Co Ltd
Current assignee: HANGZHOU HUAKAI TECHNOLOGY Co Ltd
Priority date: 2009-02-17
Filing date: 2009-02-17
Publication date: 2011-05-18
Anticipated expiration: 2029-02-17
Also published as: CN101489013A

Abstract

The invention provides a scanner comprising a carrier for bearing a picture to be scanned and a turnable cover disposed on the carrier. The turnable cover comprises an outer shell and a glass table top disposed on the shell; in side the turnable cover, a linear CCD frame for scanning and imaging and a long shaft for providing scan path are disposed; the linear CCD frame is provided with a lens facing the glass table top and jointing thereto. The scanner provided in the invention improves quality of the scanned picture, through disposing a lens for imaging in the turnable cover, jointing the lens at the glass table top during scanning, ensuring stability of focal length by gravity of the linear CCD frame; besides, the scanner with that structure improves definition of the scanned picture because the lens is disposed above the glass table top on the turnable cover, thereby preventing the glass table top from abrasion.

Description

Scanner

Technical field

The present invention relates to the image scanning technical field, relate in particular to a kind of scanner.

Background technology

Along with popularizing of office computer technology, scanner becomes people's requisite visual plant of handling official business gradually.The application scanning instrument can be converted into manuscript, photo etc. and calculate the form that function reads by scanning, used for people.Existing flip-shell scanner comprises the plummer that is provided with scaning treatment device and is arranged on renovating on the plummer, and plummer is provided with the glass table top, and this glass table top is that to be scanned image for carrying used.Wherein in the scaning treatment device along the horizontal direction of scanner be provided with a major axis guide frame (hereinafter to be referred as: major axis), major axis is provided with the linear CCD frame, and this linear CCD frame can slide in the horizontal direction along major axis.The camera lens that is provided with on the linear CCD frame, photoelectric sensor and light source etc. are used to realize to being scanned the imaging function of image.The scaning treatment device of existing scanner all is arranged under the glass table top in the plummer, when the user need be scanned scan image, scan image is tipped upside down on (one side that promptly needs to scan is towards scaning treatment device) on the glass table top, close then to renovate and scan.

Existing scanner has following defective: the camera lens on the linear CCD frame for example CCD is arranged on the below of glass table top and has certain distance with the glass table top, and this is limited by expanding with heat and contract with cold of camera lens; And because the expanding with heat and contract with cold of camera lens, camera lens will change to the distance of glass table top, causes the focal length shakiness, and the definition of scan image is not high; In addition, the glass table top that is used to carry sweep object is through using for a long time, and its surface is fuzzy owing to friction causes, and has further influenced the definition of scan image, has a strong impact on scanning result, and the quality of scanning of scan image is lower.

Summary of the invention

In order to overcome the defective of above-mentioned prior art, the invention provides a kind of scanner, comprise the plummer that is used to carry scan image and be arranged on the described plummer can overturn renovate, described renovating comprises housing that is arranged on the outside and the glass table top that is arranged on the described housing, be provided with linear CCD frame that is used for scanning imagery and the major axis that is used to provide swash width in described inside of renovating, described linear CCD frame is provided with camera lens, and described camera lens is fitted towards described glass table top and with described glass table top; Also be provided with light source on the described linear CCD frame.

Scanner provided by the invention, be arranged on by the camera lens that will be used for imaging and renovate, camera lens fits in the glass table top when carrying out image scanning, and the natural gravity of dependence linear CCD frame self guarantees the stability of the lens focus on it, improves the quality of scan image.And the scanner of this kind structure, because camera lens is arranged on the top, be by the glass table top on renovating during scanning, the glass table top of renovating can not be worn because of use, avoided existing scanner fuzzy like this because of the glass table top that carries scan image the glass mesa surfaces occurs under long-time the use, cause the low defective of scan image definition, improved the definition of scan image.

Description of drawings

Fig. 1 is a scanner structure schematic diagram of the present invention;

Fig. 2 is the structural representation of scaning treatment device in the scanner of the present invention.

Embodiment

Further specify the technical scheme of the embodiment of the invention below in conjunction with the drawings and specific embodiments.

Fig. 1 is a scanner structure schematic diagram of the present invention, as shown in Figure 1, this scanner comprises plummer 2 and renovates 1 that wherein plummer 2 is used to carry scan image, renovate 1 and be arranged on the plummer 2 and articulate, can realize overturning along plummer 2 one side promptly renovate 1 with a side of plummer 2.Wherein renovate 1 and comprise housing 11 that is arranged on the outside and the glass table top 12 that is arranged on the housing 11, promptly renovating 1 is a box body structure, renovate 1 arranged outside housing 11 is arranged, be provided with glass table top 12 in the inboard of renovating 1, when renovating 1 when being fastened on the plummer 2, housing 11 exposes to the surface, and glass table top 12 then is fastened between housing 11 and the plummer 2.Scanner provided by the invention is the improvements of existing scanner, scaning treatment device is arranged on renovates 1 inside, and the camera lens in the scaning treatment device is a scan image from top to bottom.Fig. 2 is the structural representation of scaning treatment device in the scanner of the present invention, specifically be described below: scaning treatment device comprises major axis 31 and linear CCD frame 32, wherein linear CCD frame 32 be provided with camera lens for example (not shown)s such as linear CCD, photoelectric sensor and light source be used to finish to being scanned the scanning imagery of image, camera lens on the linear CCD frame 32 is fitted towards the glass table top and with the glass table top, and major axis 31 is used to linear CCD frame 32 that swash width is provided.

Particularly, the first end 321 of linear CCD frame 32 is set up on major axis 31, slidably reciprocates at the drive lower edge of motor, belt major axis 31 and finishes swash width, promptly finishes the scanning that is scanned image to whole.Camera lens on the linear CCD frame 32 towards the glass table top promptly towards scan image, and fit with glass table top 12, promptly when renovating 1 when being fastened on the housing 11, linear CCD frame 32 is to ride over fully on the glass table top 12 in vertical direction, when motor, belt drive linear CCD frame 32 when mobile in the horizontal direction, the camera lens on the linear CCD frame 32 is along with linear CCD frame 32 along continuous straight runs move on the surface of glass table top; When renovating 1 when digging, linear CCD frame 32 relies on the annexation of major axis 31 and keeps invariant position.The user need carry out image scanning constantly, will renovate 1 and dig.And scan image faced up be arranged on the plummer 2, will renovate 1 then and turn down and carry out image scanning.Be positioned at be scanned image top light source by glass table top 12 to being scanned image emissions light, irradiate light is to being scanned on the image, and for example on the CCD/B photoelectrical coupler, finish the scanning of scanning area image to photoelectric sensor by the lens imaging on the linear CCD frame 32.Linear CCD frame 32 moves the scanning that realizes entire image on major axis 31.

The scanner that present embodiment provides, be arranged on by the camera lens that will be used for imaging and renovate, camera lens fits in the glass table top when carrying out image scanning, and the natural gravity of dependence linear CCD frame self guarantees the stability of the lens focus on it, improves the quality of scan image.And the scanner of this kind structure, because camera lens is arranged on the top, be by the glass table top on renovating during scanning, the glass table top of renovating can not be worn because of use, avoided existing scanner fuzzy like this because of the glass table top that carries scan image the glass mesa surfaces occurs under long-time the use, cause the low defective of scan image definition, improved the definition of scan image.

The scanner that present embodiment provides also mechanical oscillation occur at the linear CCD frame is mobile on major axis, and the problem that influences the scan image quality provides solution, specifically is described below.

As shown in Figure 2, the first end 321 of linear CCD frame 32 is set up on major axis 31, and the other end is the second end 322 unsettled settings of linear CCD frame 32, and linear CCD frame 32 is vertical with major axis 31.

In the scaning treatment device provided by the invention, also be provided with first support 33 and second support 34 on major axis 31, as shown in Figure 2, an end of first support 33 is connected with the second end 322 of linear CCD frame 32, and the other end is set up on major axis 31; Second support 34 connects first support 33 and linear CCD frame 32, being specially second support 34 connects first support 33 and sets up the end on major axis 31 and the first end 321 of linear CCD frame 32, as seen from the figure, it is the triangular structure of right angle of hypotenuse that linear CCD frame 32, first support 33 and second support 34 form with first support 33, according to triangle relative fixed principle, the triangular structure of right angle of formation can reduce the horizontal vibration of linear CCD frame 32 on the V direction.One end of first support 33 is set up on major axis 31 has annexation with major axis 31, promptly major axis 31 provides certain pulling force for first support 33 on horizontal plane, there are two fixing points like this in the whole triangular structure of right angle of Xing Chenging, one is the tie point between linear CCD frame 32 and the major axis 31, another is the tie point between first support 33 and the major axis 31, therefore further increased the triangular structure stability in the horizontal direction that linear CCD frame 32, first support 33 and second support 34 form, promptly any limit all can not vibrate on the V direction.

Present embodiment is to use the metastable principle of triangle, set up first support and second support on the major axis in scanner, and make first support and second support and linear CCD frame be interconnected to form triangle, increase linear CCD frame stability in the horizontal direction, the scanning machine error that less linear CCD frame vibration causes, make scan image more clear, quality of scanning is provided.

As shown in Figure 2, the swash width distance of the linear CCD frame 32 of this structure is L, when linear CCD frame 32 when the drive lower edge of motor, belt major axis 31 slides, first support 33 slides at major axis 31 with linear CCD frame 32, and second support 34 is also along with the linear CCD frame 32 and first support 33 slide along the V direction together.In sliding process, because the restriction of first support 33 and second support 34, linear CCD frame 32 reduces greatly in the vibration of V direction, the stability and the definition of lens imaging on the linear CCD frame 32 have been strengthened, the ambiguous situation of individual areas can not appear in the image that scanning is come out, and has improved quality of scanning.

In the scanner that the foregoing description provides, can also fixedly muscle be set at the triangular structure of right angle that forms by linear CCD frame 32, first support 33 and second support 34, with further reinforcement linear CCD frame stability in the horizontal direction.Scanner provided by the invention is by forming triangular supports to reduce the machine error of the scan image that causes because of the mechanical oscillation of linear CCD frame.

It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. scanner, comprise the plummer that is used to carry scan image and be arranged on the described plummer can overturn renovate, it is characterized in that, described renovating comprises housing that is arranged on the outside and the glass table top that is arranged on the described housing, be provided with linear CCD frame that is used for scanning imagery and the major axis that is used to provide swash width in described inside of renovating, described linear CCD frame is provided with camera lens, and described camera lens is fitted towards described glass table top and with described glass table top; Also be provided with light source on the described linear CCD frame.

2. scanner according to claim 1, it is characterized in that, the first end of described linear CCD frame is set up on described major axis, described major axis is provided with first support that is connected with the second end of described linear CCD frame, also comprise second support that connects described linear CCD frame and described first support, the triangular structure of right angle that it is hypotenuse that described linear CCD frame, first support and second support form with described first support.