CN101162140B - Paper size feeler mechanism for image scanner - Google Patents
Paper size feeler mechanism for image scanner Download PDFInfo
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- CN101162140B CN101162140B CN200610117128A CN200610117128A CN101162140B CN 101162140 B CN101162140 B CN 101162140B CN 200610117128 A CN200610117128 A CN 200610117128A CN 200610117128 A CN200610117128 A CN 200610117128A CN 101162140 B CN101162140 B CN 101162140B
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Abstract
The invention is a paper testing mechanism of an image scanning device which is an optic paper testing mechanism, the paper testing mechanism uses light route change to early get paper image to be scanned and to judge the width of paper. The paper testing mechanism comprises a light source, a reflecting device with a plurality of reflecting lenses, a light route change device, a light sensing module, and testing positions at the track of the paper to be scanned. The light route change device can be rotated, or moved or fixed; and the light route change device reflects the self testing positions and the reflected lights at the scanned positions; different light routes can be obtained through the light route change device, and the image at the tested position can be got to judge the width of paper, thus an effect of accurate judgment is reached. In addition, because the module of the testing mechanism can be shared with the module of the image scanning mechanism, the manufacturing cost is reduced.
Description
Technical field
The present invention relates to a kind of testing agency.Described testing agency is installed in the image scanner, for example scanner, duplicating machine or multifunctional paper feeding machine or the like.Described testing agency is in order to automatically to detect the width of paper to be scanned.
Background technology
Traditional scanner need be connected to computing machine, chooses needed sweep limit so the user can see through the function of prescan.In addition, scanning gained image also can see through the automatic frame of image processing software and select needed image capturing range.Choose image capturing range (selecting image area) owing to comprised in the use, so described scanning device does not need to do earlier note detection.The automatic sheet feed mechanism of general A4 specification does not design the function that detects antiquarian yet in addition, and this is because the A4 specification is the most general use specification.
Have plenty of in the note detection mechanism and adopt electromechanical, it is a plurality of microswitches to be installed with the different paper size of correspondence on the paper box putting, and for example has eight kinds of paper sizes just to need eight microswitches.Because described space of putting paper box is limited, so too many microswitch can not be installed.In addition, if antiquarian will not come to the awkward situation that can't accurately be suitable for yet in the scope of imagining in advance.Therefore, under this design, can't distinguish too many kind of paper width.
Other has a kind of is the note detection mechanism of resistance-type, and it is between the width adjustment sheet of putting paper box and circuit board variable resistor to be installed.Utilize moving of described width adjustment sheet to produce multiple resistance value with the different paper width of correspondence.But constantly the resistance of friction is not long serviceable life, and resistance value is easy to generate unsettled situation, and then influences the accuracy of note detection.
In addition, traditional method for detecting paper also comprises condenser type or inductance type, and it all is to utilize the electrical specification that changes electric capacity or inductance to come corresponding paper width.Yet all there be the shortcoming identical with resistance-type mechanism in this kind mode.
The application that detects with antiquarian except above-mentioned several application, highlights especially in the use in fields such as multifunctional paper feeding machine, digital copier that it is important.With the development in described field, " speed " is a competitive power important index often, if therefore can accelerate its processing speed even be beforehand with preparation in each link, then the lifting for speed will be very helpful.
Summary of the invention
The present invention is a kind of note detection mechanism of optical profile type.Described testing agency does not need to use sensor or microswitch, so manufacturing cost is lower.Described again testing agency does not have the situation of mutual friction of assembly and loss, so there is not the problem about the life-span yet.
According to purpose described above, the present invention becomes variableness with the light path design of scan-image.Particularly, before obtaining scan-image, change earlier light path obtaining local paper image in advance, and judge paper width by this.Then reply predetermined light path form, when paper moves to scanning position, can be scanned.
The testing agency that the present invention will disclose comprises light source, one group of reflection unit with a plurality of reflecting optics, light path modifier, and optical sensing subassembly.Wherein said light path modifier is rotatable or removable.When described light path modifier rotates or moves the light path that can change sweep trace, make described optical sensing subassembly receive paper to be scanned and do not reach scan-image before the scanning position, and image is judged the width of paper to be scanned by this.
Again, described light path modifier is fixed.When waiting to sweep paper and arrive scanning position, described optical sensing subassembly can be obtained the scan-image through described light path modifier, and image is judged the width of paper to be scanned by this.When paper to be scanned arrives scanning position, the obtained scan-image of then described optical sensing subassembly is without described light path modifier.
Therefore by the present invention, for example in the application of multifunctional paper feeding machine and digital copier, before arriving scanning window, scanned document just can know its size, this moment, system can be beforehand with preparation, be adjusted to suitable output print paper, can directly print off after waiting to finish image processing, this is compared to not using technology of the present invention must finish image capture, through just declaring the size of knowing required paper behind the image processing supervisor, go to adjust the position of required paper groove this moment more again; Even the machine that has is must be by user's manual adjustment voluntarily, and the present invention obviously provides sizable progress, and it is many that speed can be promoted.
Description of drawings
Fig. 1 is the structure of note detection first embodiment of mechanism of the present invention and uses synoptic diagram;
Fig. 2 is the light path synoptic diagram of the first embodiment scan-image;
Fig. 3 be note detection of the present invention mechanism second embodiment structure and use synoptic diagram;
Fig. 4 is the light path synoptic diagram of the second embodiment scan-image;
Fig. 5 be note detection of the present invention mechanism the 3rd embodiment structure and use synoptic diagram.
Embodiment
See also Fig. 1, the mobile route of disclosed testing agency's 10 corresponding paper 20.Described testing agency 10 comprises light source 12, reflection unit 13, light path modifier 14 and optical sensing subassembly 15.Wherein, described light source 12 is the strip fluorescent tube; Reflection unit 13 is made up of a plurality of eyeglasses, the eyeglass 131,132 that is for example disclosed among the figure.Light path modifier 14 can be an eyeglass.Optical sensing subassembly 15 be charge-coupled device (CCD) (Charge Coupled Device) or contact image sensor (contact image sensor, CIS).
When automatic feed-in of paper 20 quilts and arrival detection position 30, light path modifier 14 turns to solid line position by the dotted line position among the figure.Light source 12 emits beam and shines described paper 20 and produce reflection, and reflection ray is advanced at reflection unit 13 and the 14 formed scopes reflections of light path modifier.At last, reflection ray passes lens 16 and enters optical sensing subassembly 15.
Reflection ray can be a sweep trace, so the image in the optical sensing subassembly 15 is a line segment, by length/pixel of calculating described line segment, can know the width of described paper 20.
Fig. 2 is the light path synoptic diagram that paper 20 arrives scanning position 40.Paper 20 continues to move forward to scanning position 40, and light source 12 is radiated at paper 12 and produces reflection ray.At this state, light path modifier 14 is replied and is original state, and described reflection ray can advance in the scope internal reflection that reflection unit 13 and light path modifier 14 are surrounded.At last, optical sensing subassembly 15 resulting signal of video signal are the actual scanning image of paper 20.
In Fig. 1 and Fig. 2, testing agency 10 can be same mechanism with the scanning mechanism of scanning device.It should be noted that and to comprise a rotary catoptron in the described scanning mechanism with device as the change light path.
In addition, in opening 20 mobile route, comprise detection position 30 and scanning position 40.Direct of travel with paper 20 is reference, and detection position 30 is positioned at the place ahead of scanning position 40.
In this embodiment, when different paper arrival detection position 30, optical sensing subassembly 15 resulting scanning line widths are equal to the developed width of paper.In other words, the paper width that the present invention detected is not subjected to the restriction of existing specification.
In addition, testing agency 10 does not have the extra assembly that contacts with paper, so can save a part of cost.Again because testing agency 10 does not use the contact assembly, so can not wear and tear and the feasible situation that reduces with the life-span by generation component.
See also Fig. 3, it is that light path modifier 14 is the synoptic diagram of packaged type assembly.When paper 20 moves to detection position 30, light path modifier 14 moves on to solid line position by initial dotted line position.At this moment, the reflected ray of paper 20 can enter in the optical sensing subassembly 15 without reflection unit 13, utilizes the width of the 30 resulting sweep signals judgement paper 20 in the detection position according to this.
See also Fig. 4, when paper 20 arrives scanning positions 40, then light path modifier 14 again displacement get back to initial position, at this moment, sweep signal can be advanced in the scope internal reflection that reflection unit 13 and light path modifier 14 are surrounded.At last, receive sweep signal by optical sensing subassembly 15.
In the aforementioned embodiment, light path modifier 14 is dynamic apparatus.Described dynamic apparatus comprises rotatable and removable.
See also Fig. 5, optical path change device 14 is static reflecting optics.When paper 20 moves to detection position 30, reflect light (shown in dotted line) meeting process light path modifier 14 and reflection unit 13 from paper 20, enter optical sensing subassembly 15 again, in order to judge the width of paper 20.
When paper 20 moves to scanning position 40, then reflect from the light (shown in solid line) of paper 20 to advance in the scope internal reflection that each eyeglass surrounded of reflection unit 13, receive signal of video signal by optical sensing subassembly 15 more at last.
By above explanation, main technical principle of the present invention is to utilize the variation of light path, obtains at least one sweep trace that is equivalent to paper width before real scan-image, judges the developed width of described paper according to this.In addition, the total optical path (total track) of detection needed light path of paper and scan-image can be unequal.
More than be preferred embodiment of the present invention and design graphic, preferred embodiment and designing graphicly only illustrates, be not to be used to limit interest field of the present invention, all with equalization technological means or the interest field implementer of being contained for following claim content, all do not break away from category of the present invention and be applicant's interest field.
The drawing reference numeral explanation:
10 note detection mechanisms
12 light sources
13 reflection units
131,132 eyeglasses
14 light path changing devices
15 optical sensing subassemblies
16 lens
20 paper
30 detection positions
40 scanning positions
Claims (7)
1. the paper size feeler mechanism of an image scanner, described equipment are applied in the path that paper moves, and the mobile route of wherein said paper comprises the one scan position, and described testing agency comprises:
The detection position, it is defined in the mobile route of described paper;
Light source, it provides and detects the required light of described antiquarian;
Optical sensing subassembly, it is in order to receive reflection ray; And
Light path device, it is with so that reflex to described optical sensing subassembly from the light of described paper;
When paper during by feed-in, can arrive described detection position earlier and arrive described scanning position again, produce different light paths in described detection position respectively with described scanning position this moment, wherein, and the basis of the image that light path produced of complying with described detection position as antiquarian.
2. the paper size feeler mechanism of image scanner as claimed in claim 1 is characterized in that, wherein said light path device comprises the dynamic light path modifier.
3. the paper size feeler mechanism of image scanner as claimed in claim 2 is characterized in that, described dynamic light path modifier is the catoptron with turning power.
4. the paper size feeler mechanism of image scanner as claimed in claim 2 is characterized in that, described dynamic light path modifier is the catoptron with locomotivity.
5. the paper size feeler mechanism of image scanner as claimed in claim 1 is characterized in that, is same light source in order to the described light source that detects antiquarian to be provided with the required light source of scan-image is provided wherein.
6. the paper size feeler mechanism of image scanner as claimed in claim 1 is characterized in that, wherein said light path device comprises static light path modifier.
7. the paper size feeler mechanism of image scanner as claimed in claim 6 is characterized in that, wherein said static light path modifier comprises fixed reflecting optics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610117128A CN101162140B (en) | 2006-10-13 | 2006-10-13 | Paper size feeler mechanism for image scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610117128A CN101162140B (en) | 2006-10-13 | 2006-10-13 | Paper size feeler mechanism for image scanner |
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| Publication Number | Publication Date |
|---|---|
| CN101162140A CN101162140A (en) | 2008-04-16 |
| CN101162140B true CN101162140B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610117128A Active CN101162140B (en) | 2006-10-13 | 2006-10-13 | Paper size feeler mechanism for image scanner |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825436B (en) * | 2010-05-14 | 2011-10-26 | 上海伦恩通用技术有限公司 | Paper three-dimension deformation-quantity detection system |
| CN103376057A (en) * | 2012-04-20 | 2013-10-30 | 崴强科技股份有限公司 | File size detection device and method |
| CN112833759B (en) * | 2019-11-22 | 2022-11-29 | 致伸科技股份有限公司 | Paper size sensing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5053885A (en) * | 1989-11-30 | 1991-10-01 | Eastman Kodak Company | Copier with auto scaling, auto paper select, and window scaling |
| CN1482575A (en) * | 2002-09-12 | 2004-03-17 | 虹光精密工业（苏州）有限公司 | Paper size detecting mechanism |
-
2006
- 2006-10-13 CN CN200610117128A patent/CN101162140B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5053885A (en) * | 1989-11-30 | 1991-10-01 | Eastman Kodak Company | Copier with auto scaling, auto paper select, and window scaling |
| CN1482575A (en) * | 2002-09-12 | 2004-03-17 | 虹光精密工业（苏州）有限公司 | Paper size detecting mechanism |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2000-234911A 2000.08.29 |
| JP特开2000-325891A 2000.11.28 |
| JP特开2005-320101A 2005.11.17 |
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| CN101162140A (en) | 2008-04-16 |
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