CN2919731Y

CN2919731Y - Image scanning apparatus

Info

Publication number: CN2919731Y
Application number: CN 200620040722
Authority: CN
Inventors: 陈琰成; 王又朗
Original assignee: Hongguang Precision Industry Suzhou Co Ltd
Current assignee: Hongguang Precision Industry Suzhou Co Ltd
Priority date: 2006-03-31
Filing date: 2006-03-31
Publication date: 2007-07-04
Anticipated expiration: 2016-03-31

Abstract

An image scanning device has the function of automatic paper feeder and is provided with a detector which can detect the paper thickness. And the paper thickness can be taken as a scanning parameter for adjusting the scanning rate, thereby the reliability of image scanning results can be improved.

Description

Device of image scanning

Technical field

The utility model is about a kind of scanning means.Wherein, this scanning means has the autoamtic paper feeding function, for example combination of flat-bed scanner and automatic paper feeder, paper feeding scanner, multifunctional paper feeding machine, photocopier or the like.Scan method refers to utilize paper thickness as parameter, to determine the fast or slow of sweep speed.

Background technology

General scanning means is when doing image scan, and sweep mechanism can have different sweep speeds according to different resolution.For example, when needing the image of low resolution, because the image data amount of scanning gained is less relatively, so can use sweep speed faster.When the high-resolution image of needs,, thereby can make sweep speed slack-off because the image data amount of scanning gained is relatively large.In addition, different scan patterns, as: black and white, GTG, colour etc. also all can influence the speed of its sweep speed according to the size of its data volume.

About the decision of resolution, be to determine by the user before carrying out scan operation.The method of decision comprises with software control, or selects by button.

The sweep speed of existing paper feeding scanner usually is subjected to the influence of resolution and scan pattern, and therefore in the specification representation of scanner, regular meeting indicates especially under what pattern and how much resolution, and how many sweep speeds of scanner is.Usually (papers per minute PPM) represents the manifestation mode of sweep speed with the some pages or leaves of per minute.But in the use of reality, the quality of image of scanning gained is often closely bound up with speed, its reason not merely is to select different scan pattern or resolution, with regard to paper feeding scanner, its paper feed operation carry out the whether smooth and easy key factor that also influences the quality of image often.The resistance that is produced when wherein paper moves influences paper feed operation with regard to regular meeting, and the different thickness degree of a paper key factor of its resistance especially, and and then has influence on the quality of image.So it is smooth and easy to tend to make paper carrier to move it with bigger moment (Torque) for thicker paper, thereby can use slower speed; Thin paper then relatively can be used fast speeds.But do not consider to some extent at this part especially in the present technology.

The utility model content

The purpose of this utility model is to provide a kind of scanning means, and it possesses the function that can detect paper sheet thickness easy and fast.

The purpose of this utility model is to provide a kind of scan method again, and it can adjust sweep speed automatically according to paper sheet thickness, and the reliability of image is improved.

According to above description, the scanning means that the utility model disclosed has the autoamtic paper feeding function, and sets detector with the detecting paper sheet thickness at this scanning means.Reach easy thus and detect the effect of paper sheet thickness fast.Aforesaid detector can be ultrasonic wave or ultrared receipts/a send out assembly, by sound wave or light wave penetrate with reflectance, or phase analysis can determine paper thickness.

The scan method that the utility model disclosed comprises with the paper sheet thickness being the parameter of sweep speed again.When paper is thick, then sweep speed is slow or strengthen the moment of automatic sheet feed mechanism; When paper for thin, then sweep speed is fast or with less relatively moment.Adjust the method for sweep speed and moment, generally can reach by the mode of control power resources, for example, the power output or the rotating speed of control motor.

Below, again according to purpose, effect that the utility model disclosed, and the structure configuration, a preferred embodiment lifted, and conjunction with figs. describes in detail.

Description of drawings

Fig. 1 is the scanning means schematic diagram that the utility model discloses;

Fig. 2 is another scanning means schematic diagram that the utility model discloses;

Fig. 3 is the user mode schematic diagram of the utility model configuration penetration signal detection device;

Fig. 4 is the user mode schematic diagram that the utility model disposes reflective signal detection device;

Fig. 5 is one of scan method block diagram of disclosing of the utility model;

Fig. 6 is two of the scan method block diagram that discloses of the utility model;

Fig. 7 is three of the scan method block diagram that discloses of the utility model.

Embodiment

The scanning means that the utility model disclosed has the autoamtic paper feeding function, comprises the combination of falt bed scanner and automatic paper feeder, or paper feeding scanner, or multifunctional paper feeding machine, or photocopier or the like.

See also Fig. 1, with the be combined as example of flat-bed scanner 10 with automatic paper feeder 20.Body 12 internal configurations of flat-bed scanner 10 have sweep mechanism 14 to be used to provide the usefulness of scanning.Sweep mechanism 14 comprises light source, several reflecting optics, lens and optical sensing subassembly.

Automatic paper feeder is located on the flat-bed scanner 10 for 20 groups, comprises paper-feed 22, friction pad (pad) 24, roller set 26 and 27 and passage 28.Wherein friction pad 24 is relative with paper-feed 22, and roller set 26 and 27 is installed in the path of passage 28.

It should be noted that and in automatic paper feeder 20, more be equipped with detector 30.Detector 30 can send detection signal 32 to paper 40.Detector 30 can be that assembly is received/sent out to ultrasonic wave or infrared ray is received/assembly, so detection signal 32 is ultrasonic wave or infrared ray.

The allocation position of this detector 30 does not exceed with the position of putting paper box that is installed in this automatic paper feeder 20.For example, see also Fig. 2, this detector 30 can be installed in the mobile route of paper 40, and just the position of this detector 30 must be positioned at before the scanning position 16 of this scanner 10.

The purpose that 30 pairs of paper of detector send detection signal 32 is to detect the thickness of paper 40.When detection signal 32 contacts with paper 40, then detection signal 32 can produce and penetrate or reflecting effect.In design, can utilize the amplitude energy that penetrates or reflect, frequency and the time of delay of sound wave or light to decide thickness, also can utilize the phase place of signal to analyze, with the thickness of assessment paper 40.

As shown in Figure 3, if the detection signal 32 that this detector 30 is sent has penetration, then should dispose another detector 34 and be used for receiving signal 36 after penetrating paper 40 on the opposite of this detector 30.The signal 36 that this detector 34 receives can be shown as the dump energy that penetrates behind the paper 40, or penetrates the absorbed energy behind the paper 40.These detector 34 received signals 36 can be used as the foundation that defines paper 40 thickness.

For example, with sheet basis weight (basis weight) be 70 grams/square metre～100 grams/square metre (70GSM～100GSM) is a root thickness.After detection signal 32 penetrated the paper that basic weight is 70GSM, detector 34 can be obtained the signal A of dump energy; After detection signal 32 penetrated the paper that basic weight is 100GSM again, detector 34 can be obtained the signal B of dump energy.When detector 34 is obtained the signal C of the dump energy that penetrates paper 40 to be scanned, and B≤C≤A, can judge that paper to be scanned is a root thickness.If signal relation is A＜C, judge that then paper 40 to be scanned is thin paper.If signal relation is C＜B, judge that then paper 40 to be scanned is ground paper again.

As shown in Figure 4, be example with detection signal 32 for reflective signal, as ultrasonic wave.When detection signal 32 contacts with paper 40, then detection signal 32 is propagated in this paper 40, and when arriving material tap face, be reflected, time difference/wave path-difference between detection signal 32 that is sent by detector 30 and the reflected signal 38 that receives like this can be determined the thickness of this paper 40.For example paper is a root thickness, and detection signal 32 produces the time difference of T1 for the paper of 70 GSM; For the paper generation time difference T2 of 100 GSM, wherein T1＜T2.If 32 pairs of paper to be scanned of detection signal, 40 generation time differences are T3, and T3＜T1, then this paper 40 to be scanned can be judged as thin paper.Be T4 as if 32 pairs of paper to be scanned of detection signal, 40 generation time differences again, and T4＞T2, then this paper 40 to be scanned can be judged as ground paper.

Assembly is received/sent out to above ultrasonic wave or infrared ray is received/and an assembly all is existing assembly.The ultrasonic wave that is disposed in the utility model is received/assembly, or an infrared ray receipts/assembly belongs to existing assembly.

As shown in Figure 1,, then control the driving mechanism/driving electric of paper-feed 22 when paper 40 thickness are thick, and the driving mechanism of roller set 26 and 27, type of drive slow with speed or that moment is bigger drives paper 40 and moves in passage 28.

When paper 40 thickness are thin, then control the driving mechanism/driving electric of paper-feed 22, and the driving mechanism of roller set 26 and 27, type of drive then very fast with speed or that moment is less drives paper 40 and moves in passage 28.

The different speed or the conversion of moment can be reached by the mode of power source of control automatic paper feeder.As for, judge the thickness of paper 40 to be scanned after, sweep speed can be adjusted voluntarily by the user, or is adjusted automatically by scanning means.If the user adjusts voluntarily, then can on scanning means, dispose the sweep speed diverter switch, to transfer in chart speed degree or paper feed torsion, reach the purpose of adjusting sweep speed.If adjust sweep speed automatically by scanning means, then can hardware controls or the mode of software control reach.

See also Fig. 5, the scanning means that the utility model disclosed, its scan method may further comprise the steps:

S12: detecting and analysis.This step is used for detecting the single paper sheet thickness of putting in the paper box, or the paper thickness of no show scanning position.It can utilize ultrasonic wave or infrared ray to receive/send out assembly paper is sent detection signal, and obtain to penetrate or reflected signal after, the parameter that the conversion of signals that receives is become can compare, for example wavelength, time or the like, and with the parameter changed and known reference parameter value relatively, determine this paper sheet thickness in view of the above.

S14: select sweep speed/paper feed moment.This step is according to paper sheet thickness, selects suitable sweep speed/paper feed moment.When paper thickness is thick, then scanning means is carried out scanning with slow sweep speed, or the paper that bigger paper feed moment drives moves.When paper thickness for thin, then scanning means is carried out scanning with fast sweep speed, or the paper that less paper feed moment drives moves.

The utility model can be defined by the user voluntarily for the definition of paper sheet thickness.In other words, the user can be voluntarily rule of thumb or the basic weight of paper, judge the attribute of paper sheet thickness, so the scanning means that the utility model disclosed can be installed detector.And the scan method of scanning means may further comprise the steps, and sees also Fig. 6:

S16: decision paper sheet thickness.This step person of being to use determines that according to experience or sheet basis weight paper to be scanned is to belong to ground paper or thin paper.

S18: select sweep speed/paper feed moment.This step is according to paper sheet thickness, selects suitable sweep speed/paper feed moment.The mode of selecting can be at scanning means selection of configuration key, or selection function is provided on scanning software.When paper thickness is thick, then scanning means is carried out scanning with slow sweep speed, or the paper that bigger paper feed moment drives moves.When paper thickness for thin, then scanning means is carried out scanning with fast sweep speed, or the paper that less paper feed moment drives moves.

The sweep speed of the scanning means that the utility model disclosed more can comprise the parameter of resolution except being the parameter with the paper sheet thickness.

See also Fig. 7, scan method of the present utility model may further comprise the steps:

S12: detecting and analysis.Be to be used for detecting the single paper thickness of putting in the paper box.It can utilize the transmitting-receiving subassembly of reflective transmitting-receiving subassembly or penetration that paper is sent detection signal, penetrates the signal of paper by analysis, or reflects the signal from paper, the decision paper thickness.

S13: decision resolution.This step is to utilize the function software of scanning means, the resolution of decision scan-image.

S15: select sweep speed/paper feed moment.This step is according to paper sheet thickness and resolution, selects suitable sweep speed/paper feed moment.When paper is thick and resolution is high, then carry out image scan with slow sweep speed.Thin and resolution is low when paper thickness, then carry out image scan with fast sweep speed.

The sweep speed thick as for paper and resolution is low, and paper is thin and the high sweep speed of resolution, can be identical or different.Yet above two kinds of pairing sweep speeds of situation should be between fast sweep speed and slow sweep speed.

According to above scanning means that discloses and scan method, because when scanning, considered paper thickness and two conditions of image resolution, and adjust the sweep speed of scanning means in view of the above, so the reliability of scan-image is obviously improved.

Again, the detector that the utility model disposed is corresponding to the placement location or the mobile route of paper, and the rate travel of energy Auto-Sensing paper sheet thickness and control paper, thus quite easy in operation, and can detect paper sheet thickness fast.

More than be preferred embodiment of the present utility model and design graphic, preferred embodiment and designing graphicly only illustrates, it is not the interest field that is used to limit the utility model technology, all situations about implementing with the technological means of equalization or in " claims " interest field that content was contained all do not break away from category of the present utility model and belong to applicant's interest field.

Symbol description

10 scanning means

12 bodies

14 sweep mechanisms

16 scanning positions

20 automatic paper feeders

22 paper-feeds

24 friction pads

26,27 roller set

28 passages

30 detectors

32 detection signals

34 detectors

36 signals

38 reflected signals

40 paper

Claims

1, a kind of device of image scanning, it possesses the autoamtic paper feeding function, it is characterized in that, and described device comprises:

Body, it sets sweep mechanism and is used for scanning;

Automatic sheet feed mechanism, itself and described body are combined, and the function of autoamtic paper feeding is provided; And

Detector is configured on the described scanning means;

When described automatic sheet feed mechanism begins the feed-in paper, then described detector can begin to detect described paper sheet thickness before the scanning, and adjusts the paper feed speed of described paper feed mechanism according to paper sheet thickness.

2, device of image scanning as claimed in claim 1 is characterized in that, described body is meant falt bed scanner, and described automatic sheet feed mechanism refers to automatic paper feeder.

3, device of image scanning as claimed in claim 1 is characterized in that, the combination of described body and described automatic sheet feed mechanism is meant paper feeding scanner.

4, device of image scanning as claimed in claim 1 is characterized in that, the combination of described body and described automatic sheet feed mechanism is meant multifunctional paper feeding machine.

5, device of image scanning as claimed in claim 1 is characterized in that, described detector is meant reflective signal transceiver module.

6, device of image scanning as claimed in claim 5 is characterized in that, described reflective signal transceiver module is meant the ultrasonic transmission/reception assembly.

7, device of image scanning as claimed in claim 1 is characterized in that, described detector is a penetration signal transceiver module.

8, device of image scanning as claimed in claim 7 is characterized in that, described penetration signal transceiver module is meant an infrared ray transmitting-receiving subassembly.