CN102055879B - Sheet-fed type scanner - Google Patents
Sheet-fed type scanner Download PDFInfo
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- CN102055879B CN102055879B CN 201110030785 CN201110030785A CN102055879B CN 102055879 B CN102055879 B CN 102055879B CN 201110030785 CN201110030785 CN 201110030785 CN 201110030785 A CN201110030785 A CN 201110030785A CN 102055879 B CN102055879 B CN 102055879B
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- sensing module
- image sensing
- type image
- driving wheel
- contact type
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Abstract
The invention discloses a sheet-fed type scanner, comprising a scanner body housing, a contact type image sensing module and a sheet-fed driving device. The sheet-fed driving device comprises a driving wheel and a driven wheel; the driving wheel is rigidly connected with the contact-type image sensing module; the distance between the lens of an imaging lens of the contact-type image sensing module and the lower edge of the driven wheel is in accordance with the focal distance of the imaging lens of the contact-type image sensing module; and the contact-type image sensing module is connected with the top end of the scanner body housing through an elastic member. The sheet-fed type scanner can be used for scanning files with various thicknesses to obtain clear scanned images.
Description
Technical field
The present invention relates to the scanning technique field, particularly relate to a kind of paper feeding scanner.
Background technology
Scanner is a kind of computer external instrument equipment, can catch image and it is changed back input computer, for showing, edit or storage.In the scanner, there is a class to be called paper feeding scanner.Paper feeding scanner has paper feed channel.Be provided with cylinder in the paper feed channel, contribution to be scanned can be sent into scanner when cylinder rotates and scan.Therefore, paper feeding scanner is also referred to as drum type scanner or doffer formula scanner.
Wherein, manuscript to be scanned can be reflection contribution (as printing paper), positive (as lantern slide) or negative film (as film).Because the type difference of manuscript to be scanned, the thickness of manuscript to be scanned also can produce corresponding variation.For example: positive normally is placed in the positive folder, and the positive folder can be placed on again in the holder then, and when scanning for the holder integral body of clamping positive folder, the thickness of holder is very big, near 1cm; For photograph and negative film, thickness just is much smaller, and has only 0.1～0.3mm.
Referring to Fig. 1, be the schematic diagram of the contribution of scanner scanning standard thickness in the prior art.Among Fig. 1: manuscript to be scanned 1a is driven to take turns 2 and in the middle of driven pulley 3 is clamped in.Contact type image sensing module 4 is arranged on the top of manuscript to be scanned 1a.Be provided with imaging len 5 in the contact type image sensing module 4.The focal length of imaging len 5 is fixed.Among Fig. 1, the upper surface of manuscript to be scanned 1a is d1 to the distance between the imaging len 5.Because the thickness of manuscript to be scanned 1a is standard thickness, d1 satisfies the focal length of imaging len 5.
Referring to Fig. 2, be the schematic diagram of the contribution that scanner scanning thickness is bigger in the prior art.Among Fig. 2: the thickness of manuscript to be scanned 1b is bigger, and the upper surface of manuscript to be scanned 1b is d2 to the distance between the imaging len 5.D2 does not satisfy the focal length of imaging len 5 less than d1.
This is because in the prior art, the driven pulley of the paper-feed at scanner paper feed channel place links to each other by elastomeric element with contact type image sensing module, can fluctuate.During the different manuscript to be scanned of scanning thickness, driven pulley can fluctuate according to the thickness of manuscript to be scanned.And the position of contact type image sensing module (wherein being provided with imaging len) is fixed.This just causes the thickness of manuscript to be scanned more big, and the upper surface of manuscript to be scanned is more little to the distance between the imaging len, and then exceeds the allowed band of imaging len focal length, causes scanner can't scan distinct image.
Summary of the invention
The purpose of this invention is to provide a kind of paper feeding scanner, can scan the contribution of all thickness, and obtain scan image clearly.
For achieving the above object, the invention provides following scheme:
A kind of paper feeding scanner comprises fuselage cover, contact type image sensing module and paper feed drive unit; Described paper feed drive unit comprises driving wheel and driven pulley; Concrete:
Be rigidly connected between described driven pulley and the described contact type image sensing module;
The distance of the camera lens of the imaging len of described contact type image sensing module and the lower limb of described driven pulley meets the focal length of the imaging len of described contact type image sensing module;
Described contact type image sensing module links to each other by elastomeric element with the top of described fuselage cover.
Preferably:
Described driving wheel comprises interior wheel and three sections driving wheel skins that diameter is bigger that diameter is less, and described interior wheel runs through described driving wheel skin vertically, leaves the space between the adjacent described driving wheel skin;
Described scanner also comprises:
Reflection copy hold gripping member fixture is used for fixation reflex copy hold gripping member.
Preferably, described elastomeric element is:
Spring.
A kind of paper feeding scanner comprises fuselage cover, contact type image sensing module and paper feed drive unit; Described paper feed drive unit comprises driving wheel and driven pulley; Concrete:
Be rigidly connected between described driven pulley and the described contact type image sensing module;
The distance of the camera lens of the imaging len of described contact type image sensing module and the lower limb of described driven pulley meets the focal length of the imaging len of described contact type image sensing module;
Described driving wheel links to each other by elastomeric element with the bottom of described fuselage cover.
Preferably:
Described driving wheel comprises interior wheel and three sections driving wheel skins that diameter is bigger that diameter is less, and described interior wheel runs through described driving wheel skin vertically, leaves the space between the adjacent described driving wheel skin;
Described scanner also comprises:
Reflection copy hold gripping member fixture is used for fixation reflex copy hold gripping member.
Preferably, described elastomeric element is:
Spring.
Scanner disclosed by the invention by being rigidly connected between driven pulley and the described contact type image sensing module, can make the distance of the lower limb (being the upper surface of manuscript to be scanned) of the camera lens driven pulley of imaging len keep constant; Simultaneously should distance, meet the focal length of the imaging len of described contact type image sensing module; Contact type image sensing module links to each other by elastomeric element with the top of fuselage cover, and perhaps, driving wheel links to each other by elastomeric element with the bottom of described fuselage cover.Therefore, scanner of the present invention can scan the contribution of all thickness, and obtains scan image clearly.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use among the embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of the contribution of scanner scanning standard thickness in the prior art;
Fig. 2 is the schematic diagram of the contribution that scanner scanning thickness is bigger in the prior art;
Fig. 3 is the embodiment of the invention one described scanner internal structure explosive view;
Fig. 4 is the schematic diagram of the contribution of scanner scanning band negative folder gripping member of the present invention;
Fig. 5 is the embodiment of the invention two described scanner internal structure explosive views.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Need to prove that at first the reflection contribution described in the embodiment of the invention can be nontransparent contribution such as photo or papery contribution for example; Described transmission contribution can be transparent or semitransparent contribution such as positive negative film for example.
Embodiment one
Referring to Fig. 3, be the embodiment of the invention one described scanner internal structure explosive view.As shown in Figure 3, this scanner comprises: contact type image sensing module 10 and paper feed drive unit 20; Described paper feed drive unit comprises driving wheel 201 and driven pulley 202; Wherein:
Be rigidly connected between described driven pulley 202 and the described contact type image sensing module 10;
The distance of the camera lens of the imaging len of described contact type image sensing module 10 and the lower limb of described driven pulley 202 meets the focal length of the imaging len of described contact type image sensing module 10;
Described contact type image sensing module 10 links to each other by elastomeric element 30 with the top of fuselage cover (not shown).
Concrete, owing to be rigidly connected between described driven pulley 202 and the described contact type image sensing module 10, so the imaging len that is arranged in the contact type image sensing module 10 is changeless to the distance of the lower limb of driven pulley 202.And, owing to the lower limb of driven pulley 202 directly contacts with manuscript to be scanned, so, the distance of the lower limb of the camera lens of imaging len and described driven pulley 202, just imaging len is to the distance of the upper surface of manuscript to be scanned.
Again because described contact type image sensing module 10 links to each other by elastomeric element 30 with the top of described fuselage cover, so, paper feeding scanner of the present invention is when the different manuscript to be scanned of scanning thickness, contact type image sensing module 10 can be used as integral body with driven pulley 202, the manuscript to be scanned of all thickness fluctuates, so that can both be sent into scanner of the present invention.
In the present embodiment, the distance of the camera lens of the imaging len of described contact type image sensing module 10 and the lower limb of described driven pulley 202 meets the focal length of the imaging len of described contact type image sensing module 10.Again because, the distance of the lower limb of the camera lens of imaging len and described driven pulley 202, just imaging len is to the distance of the upper surface of manuscript to be scanned, and contact type image sensing module 10 and driven pulley 202 can be used as integral body, fluctuates; So, no matter the described scanner of present embodiment scans the contribution of which kind of thickness, the distance of the camera lens of the imaging len of contact type image sensing module 10 and the lower limb of driven pulley 202, all be changeless, and be the focal length that meets the imaging len of contact type image sensing module 10.
Therefore, the described scanner of present embodiment can scan the contribution of all thickness, and obtains scan image clearly.
In the practical application, for the scanning of negative film (for example film), may use the negative folder gripping member.The negative folder gripping member mainly plays the effect of guiding to the manuscript to be scanned of sending into paper feeding scanner.
When the scanning contribution, owing to need fix the negative folder gripping member, so the described driving wheel 201 of the described paper feeding scanner of the embodiment of the invention comprises:
The interior wheel 2011 that diameter is less and three sections driving wheel skins 2012 that diameter is bigger, described interior wheel 2011 runs through described driving wheel skin 2012 vertically, leaves the space between the adjacent described driving wheel skin;
Described scanner also comprises:
Reflection copy hold gripping member fixture 40 is used for fixation reflex copy hold gripping member.
Referring to Fig. 4, be the schematic diagram of the contribution of scanner scanning band negative folder gripping member of the present invention.Among Fig. 4,01 is scanner, and negative film 03 is placed in the negative folder gripping member 02.In the practical application, the both sides of negative folder gripping member, lobed support bar.During the scanning negative film, the support bar of the both sides of negative folder gripping member is aimed at the space of leaving between the adjacent described driving wheel skin 2012; The support bar of described space and negative folder gripping member both sides is complementary, and in conjunction with reflection copy hold gripping member fixture 40, reflection copy hold gripping member 02 can be fixed on the paper feed channel entrance of scanner.
As seen, the driving wheel structure of scanner of the present invention is complementary with reflection copy hold gripping member, and reflection copy hold gripping member fixture, contribution that can scanning strip negative folder gripping member.
In addition, need to prove that elastomeric element described in the present embodiment 30 can be spring, also can be other rubber-like parts.
Embodiment two
Referring to Fig. 5, be the embodiment of the invention two described scanner internal structure explosive views.As shown in Figure 5, this scanner comprises: contact type image sensing module 10 and paper feed drive unit 20; Described paper feed drive unit comprises driving wheel 201 and driven pulley 202; It is characterized in that:
Be rigidly connected between described driven pulley 202 and the described contact type image sensing module 10;
The distance of the camera lens of the imaging len of described contact type image sensing module 10 and the lower limb of described driven pulley 202 meets the focal length of the imaging len of described contact type image sensing module 10;
Described driving wheel 201 links to each other by elastomeric element 30 with the bottom of fuselage cover (not shown).
The difference part of present embodiment and embodiment one is: in the present embodiment, described driving wheel 201 links to each other by elastomeric element 30 with the bottom of fuselage cover.In other words, in the present embodiment: the driven pulley 202 of contact type image sensing module 10 and described paper feed drive unit 20 is relatively-stationary; Driving wheel 201 parts of paper feed drive unit are owing to link to each other by elastomeric element 30 with the bottom of fuselage cover, thus can fluctuate, to adapt to the manuscript to be scanned of different-thickness.
Concrete, owing to be rigidly connected between described driven pulley 202 and the described contact type image sensing module 10, so the imaging len that is arranged in the contact type image sensing module 10 is changeless to the distance of the lower limb of driven pulley 202.And, owing to the lower limb of driven pulley 202 directly contacts with manuscript to be scanned, so, the distance of the lower limb of the camera lens of imaging len and described driven pulley 202, just imaging len is to the distance of the upper surface of manuscript to be scanned.
Again because described driving wheel 201 links to each other by elastomeric element 30 with the bottom of fuselage cover, so, paper feeding scanner of the present invention is when the different manuscript to be scanned of scanning thickness, driving wheel 201 can fluctuate, so that the manuscript to be scanned of all thickness can both be sent into scanner of the present invention.
In the present embodiment, the distance of the camera lens of the imaging len of described contact type image sensing module 10 and the lower limb of described driven pulley 202 meets the focal length of the imaging len of described contact type image sensing module 10.Again because, the distance of the lower limb of the camera lens of imaging len and described driven pulley 202, just imaging len is to the distance of the upper surface of manuscript to be scanned, and driving wheel 201 can fluctuate; So, no matter the described scanner of present embodiment scans the contribution of which kind of thickness, the distance of the camera lens of the imaging len of contact type image sensing module 10 and the lower limb of driven pulley 202, all be changeless, and be the focal length that meets the imaging len of contact type image sensing module 10.
Therefore, the described scanner of present embodiment can scan the contribution of all thickness, and obtains scan image clearly.
Similar with embodiment one, when the scanning contribution, owing to need fix the negative folder gripping member, so the described driving wheel 201 of the described paper feeding scanner of the embodiment of the invention comprises:
The interior wheel 2011 that diameter is less and three sections driving wheel skins 2012 that diameter is bigger, described interior wheel 2011 runs through described driving wheel skin 2012 vertically, leaves the space between the adjacent described driving wheel skin;
Described scanner also comprises:
Reflection copy hold gripping member fixture 40 is used for fixation reflex copy hold gripping member.
Elastomeric element described in the present embodiment 30 can be spring, also can be other rubber-like parts.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
Used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part in specific embodiments and applications all can change.In sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a paper feeding scanner comprises fuselage cover, contact type image sensing module and paper feed drive unit; Described paper feed drive unit comprises driving wheel and driven pulley; It is characterized in that:
Be rigidly connected between described driven pulley and the described contact type image sensing module;
The distance of the camera lens of the imaging len of described contact type image sensing module and the lower limb of described driven pulley meets the focal length of the imaging len of described contact type image sensing module;
Described contact type image sensing module links to each other by elastomeric element with the top of described fuselage cover.
2. scanner according to claim 1 is characterized in that:
Described driving wheel comprises interior wheel and three sections driving wheel skins that diameter is bigger that diameter is less, and described interior wheel runs through described driving wheel skin vertically, leaves the space between the adjacent described driving wheel skin;
Described scanner also comprises:
Reflection copy hold gripping member fixture is used for fixation reflex copy hold gripping member.
3. scanner according to claim 1 and 2 is characterized in that, described elastomeric element is:
Spring.
4. a paper feeding scanner comprises fuselage cover, contact type image sensing module and paper feed drive unit; Described paper feed drive unit comprises driving wheel and driven pulley; It is characterized in that:
Be rigidly connected between described driven pulley and the described contact type image sensing module;
The distance of the camera lens of the imaging len of described contact type image sensing module and the lower limb of described driven pulley meets the focal length of the imaging len of described contact type image sensing module;
Described driving wheel links to each other by elastomeric element with the bottom of described fuselage cover.
5. scanner according to claim 4 is characterized in that:
Described driving wheel comprises interior wheel and three sections driving wheel skins that diameter is bigger that diameter is less, and described interior wheel runs through described driving wheel skin vertically, leaves the space between the adjacent described driving wheel skin;
Described scanner also comprises:
Reflection copy hold gripping member fixture is used for fixation reflex copy hold gripping member.
6. according to claim 4 or 5 described scanners, it is characterized in that described elastomeric element is:
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030785 CN102055879B (en) | 2011-01-28 | 2011-01-28 | Sheet-fed type scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030785 CN102055879B (en) | 2011-01-28 | 2011-01-28 | Sheet-fed type scanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102055879A CN102055879A (en) | 2011-05-11 |
| CN102055879B true CN102055879B (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110030785 Expired - Fee Related CN102055879B (en) | 2011-01-28 | 2011-01-28 | Sheet-fed type scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102055879B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08241556A (en) * | 1995-03-05 | 1996-09-17 | Nakamichi Corp | Disk transfer device |
| CN1598686A (en) * | 2003-09-16 | 2005-03-23 | 明基电通股份有限公司 | Camera with resilient drive |
| CN100413304C (en) * | 2005-05-09 | 2008-08-20 | 光宝科技股份有限公司 | Adjustable scanning device and regulating method thereof |
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2011
- 2011-01-28 CN CN 201110030785 patent/CN102055879B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102055879A (en) | 2011-05-11 |
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