CN100413305C - Paper front edge detection and optic scan module homing device - Google Patents
Paper front edge detection and optic scan module homing device Download PDFInfo
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- CN100413305C CN100413305C CNB200510085037XA CN200510085037A CN100413305C CN 100413305 C CN100413305 C CN 100413305C CN B200510085037X A CNB200510085037X A CN B200510085037XA CN 200510085037 A CN200510085037 A CN 200510085037A CN 100413305 C CN100413305 C CN 100413305C
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Abstract
Being setup at exit end of paper feeding track, a sensing light source is corresponding to image sensor of an optical scanning module. The sensing light source can project a sensing light beam for image sensor to receive. Based on determining whether sensing light is received by image sensor, the invention detects whether front edge is located above the image sensor, or validates whether optical scanning module is returned back to prearranged initial position.
Description
Technical field
The present invention relates to a kind of scanning machine, particularly detect and optic scan module homing device, utilize optic scan module to detect and positioning operation relevant for a kind of paper front edge.
Background technology
Shown in figure 1, Fig. 2 A and Fig. 2 B, multifunctional paper feeding machine (Multi-Function Peripheral, MFP), scanning such as scanner, photocopier machine 1 all possesses the optical scanner function, to carry out the usefulness of image scan, image duplicated to convert electronic data to store, or via the paper printout.Scanning machine 1 has a transparent scanning platform 2, and an optic scan module 3 is set below scanning platform 2, utilizes a mobile platform 4 to make this optic scan module 3 toward polyslip.When carrying out the image scan operation of individual paper, one of paper desire scanning faced down to be positioned on this scanning platform 2, drives this optic scan module 3 toward polyslips by this mobile platform 4, scans the image on this paper.
If in the time of must scanning a large amount of paper simultaneously, then can utilize automatic paper feeder a 5 (AutomaticDocument Feeder, ADF), should scan the feed-in in regular turn of pending paper in the machine 1, scan by these optic scan module 3 tops, move but utilize this automatic paper feeder 5 to drive paper 6 for maintaining static the position of this optic scan module 3 at this moment.
This optic scan module 3 is in holding state when flat, just opens to scan when paper front edge 6a is about to arrive these optic scan module 3 tops.Its purpose is to save power consumption, prolongs 3 life-spans of optic scan module, avoids this paper 6 zone in addition of these optic scan module 3 scannings simultaneously, takies the buffer storage temporarily providing room.Promoting paper 6 with a plurality of paper-feed 5a traditionally moves, simultaneously carry out the detection of the paper front edge 6a position of paper 6 with a shell fragment 5b, these paper-feeds 5a continues to rotate this paper 6 of drive and moves towards this optic scan module 3 by a paper feed track 7, this paper 6 arrives before this optic scan module 3, this paper front edge 6a can promote this shell fragment 5b earlier and produce a triggering signal, the control circuit that should scan machine 1 this moment can be according to the distance of this shell fragment 5b and this optic scan module 3, and these paper-feeds 5a rotates the stroke that moving this paper 6 of an astragal is produced, beginning that these paper-feeds 5a is rotated the number of turns counts, when these paper-feeds 5a rotates the paper shift motion that the number of turns produced, slightly equal between this shell fragment 5b and this optic scan module 3 apart from the time, then start 3 pairs of these paper 6 of this optic scan module and scan.Yet this shell fragment 5b is a mechanical structure, its precision is low, make this shell fragment 5b be subjected to that this paper 6 promotes and when producing triggering signal, this paper front edge 6a physical location can produce error, add the journey error that these paper-feeds 5a is produced when driving this paper 6, when causing this optic scan module 3 to start, these optic scan module 3 tops of this paper front edge 6a no show in fact still, or surpassed this optic scan module 3, cause the distortion of scanning effect.
When not adopting this automatic paper feeder 5, and when taking individual paper of manual scanning, directly a paper is seated in scanning platform 2 tops, one of desire scanning is faced down, and a lateral edges of this paper drawn close in a start line (figure do not show), this start line is corresponding to the original position of this optic scan module 3.When carrying out scanning operation, this mobile platform 4 can drive this optic scan module 3 and move, and is set out by this original position and scans, till another side that is scanned up to this paper.After scanning operation is finished, this mobile platform 4 can drive this optic scan module 3 and move towards this original position, when this optic scan module 3 arrives original position, then this mobile platform 4 can decommission, this optic scan module 3 is stopped on this original position, wait for that scanning operation begins next time.For this optic scan module 3 positively is positioned on this original position, generally one group of first sensor 8a and second transducer 8b in correspondence with each other is set in this optic scan module 3 and this scanning machine 1, this first sensor 8a is corresponding to this original position.When this optic scan module 3 was positioned at this original position, this first sensor 8a and this second transducer 8b can respond to mutually, send a detection signal this mobile platform 4 is decommissioned.This optic scan module 3 and this scanning machine 1 inside all must install sensing component additional, increase built-up time and expend cost.
Summary of the invention
In view of above problem, main purpose of the present invention is to provide a kind of paper front edge to detect and optic scan module homing device, accurate paper front edge detecting is provided whereby, and can be applied to the playback of optic scan module simultaneously, simplify the assembly kind and the quantity of scanning machine.
For achieving the above object, the invention discloses a kind of paper front edge checkout gear, be arranged at one and possess in the scanning machine of automatic sheet feed mechanism, in order to detect the position of paper front edge, wherein this paper front edge checkout gear includes:
One optic scan module includes an image sensor and one scan light source;
One paper feed track has an arrival end and a port of export, and this arrival end enters in this paper feed track in order to paper supply Zhang Yixu, and this port of export is corresponding to this optic scan module; And
One sensing light source corresponding to the image sensor of this optic scan module, is received by this image sensor to launch an induction light;
Whereby, when the leading edge of paper arrived between this image sensor and this sensing light source, this induction light can be subjected to paper and cover, and starts this optic scan module, makes this scanning light source begin to emit beam and carries out scanning operation.
Above-mentioned paper front edge checkout gear, wherein this scanning machine includes a housing, and the surface, top of this housing is a transparent scanning platform, and this optic scan module is arranged at this scanning platform below.
Above-mentioned paper front edge checkout gear, wherein this paper feed track is close to a side of this scanning platform, forms an open image reading window, and the position of this image reading window is corresponding to this optic scan module.
Above-mentioned paper front edge checkout gear wherein more includes a conveyor module, is arranged at this scanning platform below, moves forward and backward in this scanning platform below in order to drive this optic scan module.
Above-mentioned paper front edge checkout gear, wherein this conveyor module includes a motor and a conveying assembly, and this conveying assembly is in order to connect this motor and this optic scan module.
Above-mentioned paper front edge checkout gear wherein more includes a control circuit, in order to control the running of this optic scan module and this motor.
Above-mentioned paper front edge checkout gear wherein more includes a plurality of paper-feeds, is arranged at the two side faces of this paper feed track respectively, promotes a paper and is moved towards this port of export by the arrival end of this paper feed track.
Above-mentioned paper front edge checkout gear, wherein the upward central authorities of this paper feed track offer a sensing window corresponding to this image sensor, and this sensing light source is arranged in this sensing window.
In addition,, the invention discloses a kind of scanning machine that possesses optic scan module homing device, wherein include for achieving the above object:
One housing, the surface, top of this housing is the one scan platform;
One optic scan module is arranged at this scanning platform below, and this optic scan module includes an image sensor and one scan light source;
One conveyor module is set out by an initial position in order to drive this optic scan module, moves forward and backward in this scanning platform below; And
One sensing light source is arranged at this scanning platform top, corresponding to the original position of this optic scan module, is received by this image sensor in order to launch an induction light.
The above-mentioned scanning machine that possesses optic scan module homing device, wherein this conveyor module includes a motor and a conveying assembly, and this conveying assembly is in order to connect this motor and this optic scan module.
The above-mentioned scanning machine that possesses optic scan module homing device wherein includes a control circuit, in order to control the running of this optic scan module and this motor.
In addition,, the invention discloses a kind of automatic sheet feed mechanism, it is characterized in that, include for achieving the above object:
One paper feed track has an arrival end and a port of export; And
One sensing light source is arranged at the port of export of this paper feed track, in order to launch an induction light.
Above-mentioned automatic sheet feed mechanism wherein more includes a plurality of paper-feeds, is arranged at the two side faces of this paper feed track respectively, rotates with the two side faces respectively at paper, promotes to move towards this port of export with the arrival end of a paper by this paper feed track.
Above-mentioned automatic sheet feed mechanism, wherein the upward central authorities of this paper feed track offer a sensing window, and this sensing light source is arranged in this sensing window.
For making purpose of the present invention, structure, feature and function thereof are had further understanding, conjunction with figs. and embodiment are described in detail as follows.
Description of drawings
Fig. 1 is the generalized section of known automatic paper carrier and scanning machine;
Fig. 2 A and 2B are the local enlarged diagram of known automatic paper carrier;
Fig. 3 is the generalized section of one embodiment of the invention;
Fig. 4 is the partial component exploded view of the embodiment of the invention;
Fig. 5 A and 5B are that the embodiment of the invention is applied to the schematic diagram into the paper front edge detection; And
Fig. 6 A and 6B are the schematic diagram that the embodiment of the invention is applied to the optic scan module homing location.
Wherein, Reference numeral:
1 scanning machine
2 scanning platforms
3 optic scan modules
4 mobile platforms
5 automatic paper feeders
The 5a paper-feed
The 5b shell fragment
6 paper
The 6a paper front edge
7 paper feed tracks
The 8a first sensor
8b second transducer
100 bodies
110 housings
111 scanning platforms
120 conveyor modules
121 motors
122 conveying assemblies
130 optic scan modules
131 image sensors
132 scanning light sources
200 automatic sheet feed mechanisms
210 paper feed seats
220 paper feed tracks
221 arrival ends
222 ports of export
223 image reading windows
224 sensing windows
230 paper-feeds
240 paper delivery seats
250 sensing light sources
300 paper
S responds to light
Embodiment
A kind of paper front edge detects and optic scan module homing device, is arranged at one and possesses in the scanning machine of automatic sheet feed mechanism, in order to the position of detection paper front edge, and provides optic scan module to position, correctly to return original position.The scanning machine can be multifunctional paper feeding machine (Multi-FunctionPeripheral, MFP), falt bed scanner, photocopier etc. are used to scan the scanning machine of a large amount of paper.
Shown in Figure 3, the scanning machine is divided into two parts, and one is the body 100 of scanning machine, and another partly is an automatic sheet feed mechanism 200.
The body 100 of scanning machine includes a housing 110, and the surface, top of housing 110 is a transparent scanning platform 111, in order to place paper to be scanned 300.Scanning platform 111 belows are provided with a conveyor module 120 and an optic scan module 130, conveyor module 120 is set out by an initial position in order to drive this optic scan module 130, move forward and backward below scanning platform 111, scanning is positioned over the paper 300 on the scanning platform 111.Conveyor module 120 includes a motor 121 and a conveying assembly 122, and motor 121 can be stepper motor or d.c. motor; Conveying assembly 122 can be the combination of a screw rod, belt or gear and tooth bar, in order to connect motor 121 and optic scan module 130, drives by motor 121, moves to drive optic scan module 130.Body 100 more includes a control circuit (figure does not show), in order to the running of control optic scan module 130 and motor 121.
Automatic sheet feed mechanism 200 is arranged at a side at body 100 tops, and it includes a paper feed seat 210, a paper feed track 220, a plurality of paper-feed 230 and a paper delivery seat 240.Wherein, paper feed seat 210 is in order to carry many paper to be scanned 300, so that paper 300 is sent in the paper feed track 220 in regular turn.Paper feed track 220 has an arrival end 221 and a port of export 222, arrival end 221 is connected with paper feed seat 210, enter in regular turn in the paper feed track 220 for paper 300, the port of export 222 is connected in a side of scanning platform 111, be connected with paper delivery seat 240, and paper feed track 220 is close to a side of scanning platform 111, forms an open image reading window 223, and the position of image reading window 223 is corresponding to the original position of optic scan module 130.Optic scan module 130 can see through the paper 300 of image reading window 223 scannings by image reading window 223 tops in original position.Each paper-feed 230 is arranged at the two side faces of paper feed track 220 respectively, rotates with the two side faces respectively at paper 300, and promotion paper 300 is moved towards this port of export 222 by the arrival end 221 of paper feed track 220.
Going up of paper feed track 220 is central, offer a sensing window 224, be provided with a sensing light source 250 in the sensing window 224, the position of sensing window 224 and image reading window 223 are in correspondence with each other, when optic scan module 130 is positioned at original position, can with sensing light source 250 in correspondence with each other, sensing light source 250 can be launched an induction light S and be received by the image sensors in the optic scan module 130 131, makes optic scan module 130 keep a current potential position standard.
Shown in figure 4 and Fig. 5 A, 5B, when adopting automatic paper feeder 200 to carry paper 300 to be scanned, optic scan module 130 is positioned at original position, sees through image reading window 223 scanning paper.Paper 300 whole repeatedly placements on the paper feed seat 210 to be scanned, in regular turn the arrival end 221 of paper 300 by paper feed track 220 is involved in by paper-feed 230, push this port of export 222 to and move, so that paper 300 is scanned by optic scan module 130 by image reading window 223 tops.Before paper 300 arrives image reading window 223, optic scan module 130 is in holding state, reduce the life-span and expend the energy to avoid scanning light source 132 to continue running, avoid image sensor 131 to read the buffer storage of a large amount of blank information busy scan machines simultaneously.
When the leading edge of paper 300 arrived image reading window 223, induction light S can be subjected to paper 300 and cover, and image sensor 131 can't be received and changes the current potential position standard of optic scan module 130.This moment, control circuit can send a triggering signal, started optic scan module 130, made scanning light source 132 begin to emit beam, and was projected to the paper 300 by image reading window 223 tops, and made image sensor 131 receive reverberation, and paper 300 is scanned.When paper 300 passes through image reading window 223 fully, and after leaving via the port of export 222 of paper feed track 220, optic scan module 130 interrupt scanning operation once again, scanning light source 132 is closed, enter holding state once again, the induction light S of sensing light source 250 emissions this moment is sustainable to be received by the image sensor in the optic scan module 130 131, waits for that scanning operation is activated next time.When the leading edge of paper 300 arrives image sensor 131 tops, just can interdict induction light S, and start optic scan module 130, improve the accuracy of the detection operation of paper front edge.
When not using automatic paper feeder 200, individual paper 300 directly can be positioned on the scanning platform 111, this moment, optic scan module 130 can be driven by conveyor module 120, was set out by original position, and the front and back translation is with scanning paper 300.Must by original position begin carry out scanning operation for optic scan module 130 this moment, otherwise the sweep limits of optic scan module 130 can be less than paper 300 actual ranges, and partial information is omitted, or sweep limits is greater than paper 300 actual ranges, and capture a large amount of garbages, take buffer memory size.
The present invention possesses the positioning function of optic scan module 130 simultaneously, makes optic scan module 130 be positioned original position really.
With reference to figure 6A and 6B, when optic scan module 130 during not in original position, image sensor 131 can't receive the induction light S that sensing light source 250 is sent, and makes optic scan module 130 keep another current potential position standard.Optic scan module 130 is after a preceding scanning operation is finished, and scanning light source 132 can be closed, and then conveyor module 120 can begin to promote optic scan module 130, and the opposite side by scanning platform 111 moves towards this original position gradually.When optic scan module 130 arrives original position, image sensor 131 just can receive the induction light S that sensing light source 250 is sent, change and the current potential position that makes optic scan module 130 is accurate, send a playback signal, make the control circuit of scanning machine stop this conveyor module 120, make optic scan module 130 stay in original position, finish playback and positioning operation.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1. a paper front edge checkout gear is arranged at one and possesses in the scanning machine of automatic sheet feed mechanism, in order to detect the position of paper front edge, it is characterized in that this paper front edge checkout gear includes:
One optic scan module includes an image sensor and one scan light source;
One paper feed track has an arrival end and a port of export, and this arrival end enters in this paper feed track in order to paper supply Zhang Yixu, and this port of export is corresponding to this optic scan module; And
One sensing light source corresponding to the image sensor of this optic scan module, is received by this image sensor to launch an induction light, makes this optic scan module keep a current potential position standard;
Whereby, before the leading edge of paper is passed through between this image sensor and this sensing light source, this optic scan module is in holding state, when the leading edge of paper arrives between this image sensor and this sensing light source, this induction light can be subjected to paper and cover, this image sensor can't receive this induction light and change the current potential position standard of this optic scan module, thereby starts this optic scan module, makes this scanning light source begin to emit beam and carries out scanning operation.
2. paper front edge checkout gear according to claim 1 is characterized in that, this scanning machine includes a housing, and the surface, top of this housing is a transparent scanning platform, and this optic scan module is arranged at this scanning platform below.
3. paper front edge checkout gear according to claim 2 is characterized in that, this paper feed track is close to a side of this scanning platform, forms an open image reading window, and the position of this image reading window is corresponding to this optic scan module.
4. paper front edge checkout gear according to claim 2 is characterized in that, more includes a conveyor module, is arranged at this scanning platform below, moves forward and backward in this scanning platform below in order to drive this optic scan module.
5. paper front edge checkout gear according to claim 4 is characterized in that, this conveyor module includes a motor and a conveying assembly, and this conveying assembly is in order to connect this motor and this optic scan module.
6. paper front edge checkout gear according to claim 5 is characterized in that, more includes a control circuit, in order to control the running of this optic scan module and this motor.
7. paper front edge checkout gear according to claim 1 is characterized in that, more includes a plurality of paper-feeds, is arranged at the two side faces of this paper feed track respectively, promotes a paper and is moved towards this port of export by the arrival end of this paper feed track.
8. paper front edge checkout gear according to claim 1 is characterized in that, going up of this paper feed track is central, offers a sensing window corresponding to this image sensor, and this sensing light source is arranged in this sensing window.
9. a scanning machine that possesses optic scan module homing device is characterized in that, includes:
One housing, the surface, top of this housing is the one scan platform;
One optic scan module is arranged at this scanning platform below, and this optic scan module includes an image sensor and one scan light source;
One conveyor module is set out by an initial position in order to drive this optic scan module, moves forward and backward in this scanning platform below; And
One sensing light source is arranged at this scanning platform top, corresponding to the original position of this optic scan module, is received by this image sensor in order to launch an induction light;
When this optic scan module has left this original position, this image sensor does not receive this induction light, make this optic scan module keep a current potential position standard, when this optic scan module arrives this original position, this image sensor receives this induction light again, thereby change the current potential position standard of this optic scan module, send a playback signal, make this optic scan module stay in this original position.
10. the scanning machine that possesses optic scan module homing device according to claim 9 is characterized in that this conveyor module includes a motor and a conveying assembly, and this conveying assembly is in order to connect this motor and this optic scan module.
11. the scanning machine that possesses optic scan module homing device according to claim 10 is characterized in that, includes a control circuit, in order to control the running of this optic scan module and this motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510085037XA CN100413305C (en) | 2005-07-19 | 2005-07-19 | Paper front edge detection and optic scan module homing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510085037XA CN100413305C (en) | 2005-07-19 | 2005-07-19 | Paper front edge detection and optic scan module homing device |
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| Publication Number | Publication Date |
|---|---|
| CN1900756A CN1900756A (en) | 2007-01-24 |
| CN100413305C true CN100413305C (en) | 2008-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510085037XA Active CN100413305C (en) | 2005-07-19 | 2005-07-19 | Paper front edge detection and optic scan module homing device |
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| CN (1) | CN100413305C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112118362B (en) * | 2020-09-25 | 2022-07-29 | 上海汉图科技有限公司 | Scanning bar homing method and device and scanner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252684B1 (en) * | 1998-11-13 | 2001-06-26 | Umax Data Systems Inc. | Automatic paper feeder including an upper light source |
| US20010033398A1 (en) * | 2000-04-13 | 2001-10-25 | Michael Chen | Automatic document feeder capable of detecting leading edge of document |
| US20020181031A1 (en) * | 2001-06-01 | 2002-12-05 | Umax Data Systems Inc. | Automatic document feeder for an image forming apparatus |
| CN1469300A (en) * | 2002-07-19 | 2004-01-21 | 虹光精密工业（苏州）有限公司 | Scanning method for paper-feeding scanning instrument to pick up document image |
| CN2676528Y (en) * | 2004-02-03 | 2005-02-02 | 虹光精密工业（苏州）有限公司 | Sheet feed type scanning device with paper edge detection function |
-
2005
- 2005-07-19 CN CNB200510085037XA patent/CN100413305C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252684B1 (en) * | 1998-11-13 | 2001-06-26 | Umax Data Systems Inc. | Automatic paper feeder including an upper light source |
| US20010033398A1 (en) * | 2000-04-13 | 2001-10-25 | Michael Chen | Automatic document feeder capable of detecting leading edge of document |
| US20020181031A1 (en) * | 2001-06-01 | 2002-12-05 | Umax Data Systems Inc. | Automatic document feeder for an image forming apparatus |
| CN1469300A (en) * | 2002-07-19 | 2004-01-21 | 虹光精密工业（苏州）有限公司 | Scanning method for paper-feeding scanning instrument to pick up document image |
| CN2676528Y (en) * | 2004-02-03 | 2005-02-02 | 虹光精密工业（苏州）有限公司 | Sheet feed type scanning device with paper edge detection function |
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| CN1900756A (en) | 2007-01-24 |
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Effective date of registration: 20230506 Address after: No. 25, spectrum West Road, Science City, Guangzhou high tech Industrial Development Zone, Guangzhou, Guangdong Patentee after: LUXVISIONS INNOVATION Ltd. Address before: Taiwan, Taipei, China Patentee before: Lite-On Technology Co.,Ltd. |