CN201436803U - Automatic paper feeder with file speed detection device and scanning apparatus - Google Patents
Automatic paper feeder with file speed detection device and scanning apparatus Download PDFInfo
- Publication number
- CN201436803U CN201436803U CN2009200734550U CN200920073455U CN201436803U CN 201436803 U CN201436803 U CN 201436803U CN 2009200734550 U CN2009200734550 U CN 2009200734550U CN 200920073455 U CN200920073455 U CN 200920073455U CN 201436803 U CN201436803 U CN 201436803U
- Authority
- CN
- China
- Prior art keywords
- file
- scanned
- roller
- rotating shaft
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides an automatic paper feeder with a file speed detection device applied to the scanning apparatus. The automatic paper feeder comprises a paper feeding channel, a paper feeding mechanism, rotating shafts, idle wheels, and a detection device, wherein the paper feeding mechanism is used for conveying the file to be scanned along the paper feeding channel; the rotating shafts are arranged in the paper feeding channel, and the idle wheels are arranged on the rotating shafts. When the file to be scanned passes through the paper feeding channel, the idle wheels rotate under the drive of the file to be scanned. The detection device detects the rotating speed of the idle wheels and sends the detected signals according to the rotating speed.
Description
Technical field
The utility model relates to a kind of automatic paper feeder and uses its scanning device, and especially, the utility model relates to a kind of file gait of march to be scanned that detects, and comes the automatic paper feeder and the scanning device of gated sweep sequential according to file gait of march to be scanned.
Background technology
The configurable automatic paper feeder of scanning device on the market passes through the image read module with automatic transmission file to be scanned now, and then allows the user can scan heap file more expediently.
See also Fig. 1, Fig. 1 is the schematic diagram that shows the autoamtic paper feeding formula scanning device 1 of prior art.Scanning device 1 comprises paper-feeding channel 10, paper-feed 12 and delivery roller group 141,142,143,144.Paper-feed 12 be by motor driven with in the file 2 feed-in paper-feeding channels 10 to be scanned, then transmit the file to be scanned 2 that is arranged in paper-feeding channel 10 by the delivery roller group 141,142,143,144 that is subjected to motor driven equally.When file 2 to be scanned passed through image read modules 16, image read module 16 read the content on the file 2 to be scanned.
Image read module 16 can comprise Charged Coupled Device (Charge-Coupled Device, optical module such as the CCD) sensing component that constituted of image sensor or contact image sensor (Contact Image Sensor), and light source, lens.File 2 to be scanned can have influence on the quality of scan-image by the speed of scanning area 160, and therefore, if want to obtain high-quality scan-image, the gait of march of file 2 to be scanned in paper-feeding channel 10 must stably be passed through scanning area 160.
Yet, although each delivery roller group the 141,142,143, the 144th is by same motor driven, but because the roller diameter size of each delivery roller group 141,142,143,144 is slightly variant, and support the pressure difference of the spring of each roller set, make the actual travel speed of file 2 to be scanned in paper-feeding channel 10 different, in the gait of march of each section also difference to some extent with predetermined speed.Especially by scanning area 160 time, more, scan-image is impacted because of the speed difference between delivery roller group 143 and the delivery roller group 144, and the area size difference that causes each bar scan line, and the situation of generation image distortion.For example, the scanning vertical resolution is set under the situation of 600dpi, basically the vertical range that each bar scan line should corresponding 1/600 inch, but file 2 in fact to be scanned may be with very fast or slower speed by scanning area 160, and the vertical range that makes scan line less than or greater than 1/600 inch.
The utility model content
A purpose of the present utility model is to provide a kind of automatic paper feeder, and the actual travel speed in the time of can detecting file to be scanned and be fed is to solve prior art problems.
According to above-mentioned purpose, automatic paper feeder of the present utility model comprises paper-feeding channel, paper feed mechanism, rotating shaft, idle pulley and checkout gear.Paper feed mechanism is to be arranged on the paper-feeding channel to advance along paper-feeding channel to transmit file to be scanned.Rotating shaft is arranged in the paper-feeding channel, and idle pulley is sheathed in the rotating shaft.When file to be scanned contacted by paper-feeding channel and with idle pulley, file to be scanned can drive idle pulley by contact force and rotate.Checkout gear can detect the slewing rate of idle pulley, and sends detection signal according to slewing rate.
Another purpose of the present utility model is to provide a kind of scanning device, can detect the actual travel speed of file to be scanned when wherein being fed; And scanning device is adjusted the time for exposure of image sensor to each bar scan line according to the actual travel speed of file to be scanned, to obtain clearly scan-image.
According to above-mentioned purpose, scanning device of the present utility model comprises automatic paper feeder, image read module and control circuit, and wherein, automatic paper feeder comprises paper-feeding channel, paper feed mechanism, rotating shaft, idle pulley and checkout gear.Paper feed mechanism is arranged in the paper-feeding channel and advances along paper-feeding channel to transmit a file to be scanned.Rotating shaft is arranged in the paper-feeding channel, and idle pulley is sheathed in the rotating shaft.When file to be scanned entered paper-feeding channel and contacts with idle pulley, file to be scanned can drive idle pulley by contact force and rotate.Checkout gear can detect the slewing rate of idle pulley, and sends detection signal according to its slewing rate.Control circuit is electrically connected checkout gear and image read module.Control circuit receives detection signal from checkout gear, and sends a control signal to the image read module according to detection signal, reads the image of file to be scanned with control image read module, and the signal of video signal that produces corresponding document image to be scanned.
Can be further understood by following embodiment and Figure of description about advantage of the present utility model and spirit.
Description of drawings
Fig. 1 is the schematic diagram that shows scanning device in the prior art.
Fig. 2 A is the schematic diagram that shows according to the scanning device of a specific embodiment of the present utility model.
Fig. 2 B is the partial schematic diagram of the automatic paper feeder of displayed map 2A.
Fig. 2 C is the schematic diagram of the checkout gear of displayed map 2A and Fig. 2 B.
Fig. 2 D is the functional-block diagram of the scanning device of displayed map 2A.
Fig. 3 A is the schematic diagram that shows according to the scanning device of another specific embodiment of the present utility model.
Fig. 3 B is the partial schematic diagram of the automatic paper feeder of displayed map 3A.
[primary clustering symbol description]
1: scanning device 10: paper-feeding channel
12: paper-feed 2: file to be scanned
141,142,143,144: the delivery roller group
16: image read module 160: scanning area
3,5: scanning device 30,50: image read module
32,52: automatic paper feeder 34,54: control circuit
320,520: paper-feeding channel 322,522: delivery roller group
324,524: rotating shaft 326,526: idle pulley
328,528: checkout gear 3220,5220: the first rollers
3222,5222: the second rollers 3224: present rotating shaft
3260,5260: the three roller M1, M2: motor
3280: code wheel 3282: optical detecting unit
3283: transparent area 3284: light source
3285: optical sensor 3286: non-transparent area
300: scanning light source 302: image sensor
330: paper feed mechanism 36,56: paper-feed
4,6: file S1 to be scanned: detection signal
S2: control signal
Embodiment
See also Fig. 2 A and Fig. 2 B, Fig. 2 A is the schematic diagram that shows according to the autoamtic paper feeding formula scanning device 3 of a specific embodiment of the present utility model, the part schematic diagram of the automatic paper feeder 32 of Fig. 2 B displayed map 2A.Shown in Fig. 2 A, scanning device 3 comprises image read module 30, automatic paper feeder 32 and control circuit 34, and wherein control circuit 34 is electrically connected automatic paper feeder 32 and image read module 30.
Shown in Fig. 2 A and Fig. 2 B, in this specific embodiment, automatic paper feeder 32 further comprises paper-feeding channel 320, organizes delivery roller group 322 more, rotating shaft 324, idle pulley 326 and checkout gear 328.Delivery roller group 322 comprises first roller 3220 and second roller 3222, wherein first roller 3220 can connect motor M1 to drive 3220 rotations of first roller by presenting rotating shaft 3224,3222 on second roller is arranged at the position, opposite of first roller 3220 with clamping file 4 to be scanned, and file 4 to be scanned can be advanced in paper-feeding channel 320.Motor M1 can be the motor of stepper motor, d.c. motor or other kind.In addition, scanning device 3 can further comprise paper-feed 36, with in the file 4 feed-in paper-feeding channels 320 to be scanned.
Idle pulley 326 is sheathed in the rotating shaft 324, and the position, opposite of corresponding idle pulley 326 is provided with the 3rd roller 3260 in the paper-feeding channel, and wherein the 3rd roller 3260 can be with idle pulley 326 clampings file 4 to be scanned when file 4 to be scanned is advanced.When file 4 to be scanned is subjected to that delivery roller group 322 transmits and when paper-feeding channel 320 is advanced, because the contact friction force between file 4 to be scanned and the idle pulley 326 causes idle pulley 326 to rotate, and therefore just can calculate the distance that file 4 to be scanned is advanced by the slewing rate that detects idle pulley 326 in special time.
See also Fig. 2 C, Fig. 2 C is the schematic diagram of the checkout gear 328 of displayed map 2A and Fig. 2 B.Shown in Fig. 2 C, checkout gear 328 comprises code wheel 3280 and optical detecting unit 3282.Code wheel 3280 is sheathed on equally in the rotating shaft 324 and with idle pulley 326 and joins, when idle pulley 326 is advanced along with file 4 to be scanned and when rotating, code wheel 3280 is also along with idle pulley 326 rotates with its slewing rate.Optical detecting unit 3282 is sides that are arranged at code wheel 324, and it has light source 3284 and optical sensor 3285, and light sends from light source 3284, and 3285 of optical sensors are accepted this light.Optical detecting unit 3282 can be Photo Interrupter (Photo-Interrupter).Code wheel 3280 is arranged in the middle of light source 3284 and the optical sensor 3285 rotationally, is distributed with a plurality of fence on the code wheel 3280.When code wheel 3280 turned to the transparent area 3283 of fence, the light that the light source 3284 on the optical detecting unit 3282 is sent passed transparent area 3283 and arrives optical sensor 3285.When code wheel 3280 turned to the non-transparent area 3286 of fence, non-transparent area 3286 had just interdicted the path of light, makes optical sensor 3285 can't receive the light that light source 3283 is emitted.In addition, light sensing unit 3282 further comprises photoelectric switching circuit, can convert optical sensor 3285 received light signals to the signal of telecommunication.Then, checkout gear 328 can produce detection signal according to the slewing rate of idle pulley 326.Detection signal is the frequency that corresponding light sensing unit 3282 senses light, thus can calculate the slewing rate of code wheel 3280 whereby, and then obtain the slewing rate of idle pulley 326 and the gait of march of file to be scanned 4.
See also Fig. 2 D, Fig. 2 D is the functional-block diagram of the scanning device 3 of displayed map 2A.Shown in Fig. 2 D, image read module 30 comprises scanning light source 300 and image sensor 302.When scanning, scanning light source 300 projections one light is to file 4 to be scanned, and file 4 to be scanned reflects these light, and 302 of image sensors receive this light of file 4 reflections to be scanned, obtaining the image of file 4 to be scanned, and produce the signal of video signal of corresponding file to be scanned 4 images.Image sensor 302 can adopt in force, but is not subject to, the Charged Coupled Device (CCD) or the photosensitive unit of contact image sensor (CIS).Image read module 30 remains static in paper feed type scanning equipment, must transmit file 4 to be scanned by the paper feed mechanism 330 of automatic paper feeder 32, makes image read module 30 produce with file 4 to be scanned and relatively moves, to finish scanning file 4 to be scanned.Note that paper feed mechanism 330 in this specific embodiment, comprise the paper-feed 36 shown in Fig. 2 A, delivery roller group 322 with rotating shaft 324 etc. in order to present the mechanism of file 4 to be scanned.Image sensor 302 is a unit with the scan line, reads the image of scanning file 4 to be scanned.Control circuit 34 receiving detection devices 328 of scanning device 3 detect the detection signal S1 that file 4 gait of march to be scanned are produced, and transmit control signal S2 to image read module 30 according to this detection signal S1.Image read module 30 is adjusted the time for exposure that image sensor 302 reads each bar scan line according to control signal S2.
In force, image read module 30 is a unit with the scan line perpendicular to file 4 direct of travels to be scanned, scans file 4 to be scanned.In prior art, image sensor 302 reads the time for exposure of each bar scan line for fixing, and it sets, and is not the actual travel speed according to file 4 to be scanned, but exports characteristics such as the pulse of motor M1 and motor rotary speed to according to control circuit 34.Therefore, diameter difference when between each roller and roller spring pressure difference cause file to be scanned 4 by scanning area speed and pre-set velocity not simultaneously, will cause the situation of the scan-image distortion that obtained.
In above-mentioned specific embodiment, image read module 30 can be controlled the time for exposure that image sensor 302 reads a scan line according to control signal S2, also promptly, image read module 30 can be adjusted the time for exposure of image sensor 302 according to the actual travel speed of file 4 to be scanned.For example, when file 4 to be scanned with than pre-set velocity fast speeds when the scanning area, the slewing rate of the idle pulley 326 that the checkout gear 328 of automatic paper feeder 32 can rotate according to advancing along with file 4 to be scanned calculates the gait of march of file 4 to be scanned, and sends detection signal S1 according to this to control circuit 34.Then, control circuit 34 transmits control signal S2 to image read module 30 according to the detection signal S1 that receives, the time for exposure of reading a scan line with the image sensor 302 that shortens in the image read module 32.Therefore, the image that reads is to conform to default vertical resolution in this time for exposure, and then obtains real image.On the other hand, if file 4 to be scanned with than the slower speed of pre-set velocity by scanning area, but the time for exposure Be Controlled of image sensor 302 and extending.In sum, the pass through speed of scanning area of the time for exposure of the image sensor 302 of this specific embodiment and file to be scanned 4 is inversely proportional to, in other words, code wheel 3280 slewing rates that sensed of the time for exposure of image sensor 302 and checkout gear 328 are inversely proportional to.
In addition, shown in Fig. 2 D, in another specific embodiment, control circuit 34 also can be according to detection signal S1 control motor M1, causes motor M1 to adjust paper feed speed and then makes the consistent situation of avoiding the scan-image distortion that obtained of the speed of file 4 to be scanned by scanning area.
Please consult Fig. 3 A and Fig. 3 B together, Fig. 3 A is the schematic diagram that shows according to the autoamtic paper feeding formula scanning device 5 of another specific embodiment of the present utility model, and Fig. 3 B is the part schematic diagram of the automatic paper feeder 52 of displayed map 3A then.The automatic paper feeder 52 of scanning device 5 comprises paper-feeding channel 520, organizes delivery roller group 522 more, rotating shaft 524, idle pulley 526 and checkout gear 528.Delivery roller group 522 comprises position, opposite that first roller 5220 and second roller, 5222, the second rollers 5222 are arranged at first roller 5220 with clamping file 6 to be scanned, and file 6 to be scanned can be advanced in paper-feeding channel 520.In addition, scanning device 5 can further comprise paper-feed 56, with in the file 6 feed-in paper-feeding channels 520 to be scanned.
This specific embodiment does not exist together with above-mentioned specific embodiment, and the idle pulley 526 that is this specific embodiment is to be sheathed on the same rotating shaft 524 with one of them first roller 5220.Rotating shaft 524 connects motor M2, rotates to transmit file 6 to be scanned to drive first roller 5220.The position, opposite of idle pulley 526 also is provided with the 3rd roller 5260 with clamping file 6 to be scanned.Be sheathed in the rotating shaft 524 though note that the idle pulley 526 of this specific embodiment, idle pulley 526 is not driven by motor M2, but is driven by file 6 to be scanned.As mentioned above, checkout gear 528 can detect the slewing rate of idle pulley 526 and produce detection signal according to this, and 54 of control circuits can be controlled the time for exposure that the image sensor of image read module 50 reads each bar scan line according to detection signal.
The checkout gear that note that above-mentioned each specific embodiment is arranged near the scanning area, and detecting near the gait of march of file to be scanned scanning area more exactly, but the position that is provided with of checkout gear is not limited to this.
Compared with prior art, the automatic paper feeder of the utility model in scanning device and scanning device is provided with idle pulley and checkout gear, to react the actual travel speed of file to be scanned.In addition, the image read module in the scanning device is the sequential according to the slewing rate gated sweep of the detected idle pulley of checkout gear,, the time for exposure of the image sensor of image read module, can improve the situation of image distortion in the prior art that is.
By the description of above preferred embodiment, be to wish to know more to describe feature of the present utility model and spirit, and be not to come category of the present utility model is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain being arranged in the scope that the utility model institute desire requires patent protection of various changes and tool equality.Therefore, the claimed scope of the utility model should be done the broadest explanation according to above-mentioned explanation, contains the arrangement of all possible change and tool equality to cause it.
Claims (9)
1. the automatic paper feeder with file speed detector is characterized in that, comprises:
Paper-feeding channel;
Paper feed mechanism is advanced along described paper-feeding channel in order to transmit file to be scanned;
Rotating shaft is arranged in the described paper-feeding channel;
Idle pulley is sheathed in the described rotating shaft, and described idle pulley is driven by the file described to be scanned by described paper-feeding channel and rotates; And
Checkout gear in order to detecting the slewing rate of described idle pulley, and sends detection signal according to described slewing rate.
2. automatic paper feeder as claimed in claim 1 is characterized in that, described checkout gear comprises:
Code wheel is sheathed in the described rotating shaft, joins with described idle pulley, and rotates with described slewing rate; And
Optical detecting unit, described slewing rate in order to the described code wheel of sensing, and send described detection signal, wherein said optical detecting unit comprises light source and optical sensor, described light source emits beam, and described optical sensor receives described light, and described code wheel is arranged at the centre of described light source and optical sensor, the photosensor senses intermittence is passed the described light of described code wheel, with the described slewing rate of the described code wheel of sensing.
3. automatic paper feeder as claimed in claim 1 is characterized in that, described paper feed mechanism comprises:
Motor is in order to drive described rotating shaft;
First roller is sheathed in the described rotating shaft, and described first roller is driven and rotated by described rotating shaft, in order to present described file to be scanned; And
Second roller is arranged at the opposite of described first roller, in order to the described file to be scanned of the described first roller clamping.
4. automatic paper feeder as claimed in claim 1, wherein said paper feed mechanism comprises:
Present rotating shaft;
Motor is in order to drive the described rotating shaft of presenting;
First roller is sheathed on described presenting in the rotating shaft, and described first roller is presented rotating shaft and driven by described, in order to present described file to be scanned; And
Second roller is arranged at the position, opposite of described first roller, in order to the described file to be scanned of the described first roller clamping.
5. automatic paper feeder as claimed in claim 1 is characterized in that, also comprises the 3rd roller, is arranged at the position, opposite of described idle pulley, in order to the described file to be scanned of described idle pulley clamping.
6. the scanning device with file speed detector is characterized in that, comprises:
As each described automatic paper feeder among the claim 1-5;
The image read module in order to read the image of described file to be scanned, reaches the signal of video signal of the image that produces corresponding described file to be scanned; And
Control circuit is electrically connected with described checkout gear and described image read module, in order to receiving described detection signal, and according to described detection signal, sends the control signal that the described image read module of control scans described file to be scanned.
7. scanning device as claimed in claim 6 is characterized in that, described image read module is to be that unit scans described file to be scanned with the scan line.
8. scanning device as claimed in claim 7 is characterized in that, described image read module comprises image sensor, the time for exposure when described control signal is controlled the image of scan line of the described file to be scanned of described image sensor sensing.
9. scanning device as claimed in claim 8 is characterized in that, the described time for exposure of described image sensor is that the described slewing rate of the described code wheel that senses with described checkout gear is inversely proportional to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200734550U CN201436803U (en) | 2009-06-05 | 2009-06-05 | Automatic paper feeder with file speed detection device and scanning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200734550U CN201436803U (en) | 2009-06-05 | 2009-06-05 | Automatic paper feeder with file speed detection device and scanning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201436803U true CN201436803U (en) | 2010-04-07 |
Family
ID=42373248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200734550U Expired - Lifetime CN201436803U (en) | 2009-06-05 | 2009-06-05 | Automatic paper feeder with file speed detection device and scanning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201436803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713692A (en) * | 2015-11-18 | 2017-05-24 | 株式会社Pfu | Document conveying apparatus and determination method |
-
2009
- 2009-06-05 CN CN2009200734550U patent/CN201436803U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713692A (en) * | 2015-11-18 | 2017-05-24 | 株式会社Pfu | Document conveying apparatus and determination method |
| CN106713692B (en) * | 2015-11-18 | 2019-01-22 | 株式会社Pfu | Original document feeder and determination method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5568281A (en) | Automatic document presence, skew and width detection method and apparatus for a document scanner | |
| US5107350A (en) | Image reading apparatus for optically reading the contents of a conveyed document and obtaining image signal information | |
| JPH07236034A (en) | Picture reader | |
| CN101150643A (en) | Image reading apparatus | |
| JPS60196063A (en) | Telautogram information reader | |
| CN101540820B (en) | Document reader | |
| US8289585B2 (en) | Image scanning device and image forming apparatus including the same | |
| US8305658B2 (en) | Automatic document feeder and scanning apparatus having device for detecting document speed | |
| US20070090591A1 (en) | Multi-sheet feed detection system | |
| CN201436803U (en) | Automatic paper feeder with file speed detection device and scanning apparatus | |
| JPH06276350A (en) | Automatic document feeder and image forming device | |
| CN102333170A (en) | Image-scanning device and the method that is used to proofread and correct the image that is scanned | |
| CN101909135A (en) | Automatic paper feeder with file speed detector and scanning device | |
| US8587841B2 (en) | Compact configuration for a scan bar assembly | |
| US20050231768A1 (en) | Scanner and exposure control method thereof | |
| US4901157A (en) | Line scan image scanner for use with reflective originals and transparent films | |
| US6859636B2 (en) | Image reading apparatus | |
| US8498025B2 (en) | Image reader and method of reading image | |
| US7652801B2 (en) | Duplex detection imaging system and method | |
| US8964197B2 (en) | Reading apparatus and reading control method that reduces misalignment at a joint between a pixel read before a read-suspension event and a pixel read after the read-suspension event | |
| US8970925B2 (en) | Scanner for automatically detecting object to be scanned and scanning method using same | |
| CN201210709Y (en) | Automatic paper feeding apparatus having component of different paper feeding speed and scanning device | |
| US20210188589A1 (en) | Medium conveying apparatus for generating image based on pulse signal whose cycle varies according to rotation of dc motor | |
| JP2018140864A (en) | Paper carrying device, control method and control program | |
| KR100255927B1 (en) | Indicator for the used pages of thermal transfer ribbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100407 |