TW516305B - Bidirectional driving device of the optical scanning module of scanner and the method thereof - Google Patents

Abstract

A bidirectional driving device of the optical scanning module of scanner and the method thereof are disclosed, in which the device comprises a first driving mechanism installed inside the image scanning device and the second driving mechanism installed inside the image scanning device. By driving the first and second driving mechanisms simultaneously, the optical module is pulled to move along the transmission direction of the first driving mechanism, so as to proceed image scanning on the draft to be scanned. The transmission direction of the second driving mechanism during pulling and moving the optical scanning module is the same or opposite to that of the first driving mechanism, so as to correspond to the different scanning resolution in the scanning operation.

Description

516305 V. Description of the invention (1) " " '-I. Field of invention: * One m ί: Drive technology for an image scanning device, especially ^' " Bidirectional driving of optical scanner module of moving scanner Method and equipment II. Background description: The components of the platform-based image scanning device are shown in Figures 1 and 2. 'It mainly includes an image scanning device body 11, a manuscript bearing surface 12, and an optical scanning module. 13. Two guide bars 143, 14b. The optical scanning module 13 (see also FIG. 3) is mainly configured with an image sensing element 14 (such as a charge-coupled element CCD), a focusing lens 15, a light source 16, a plurality of reflective lenses 171, 172, 173, 174 and other components. The optical scanning module 13 is driven by a control circuit and a conventional driving mechanism (for example, including a motor 18 and a transmission belt 19), so that the optical scanning module 13 can be guided along the guide rod 1 4 a, 1 4 b is shifted to scan a reflective manuscript 2 placed on the manuscript bearing surface 12. In the traditional structure design, in order to drive the optical scanning module 13 with a driving mechanism, most of its structure is designed to drive the optical scanning module with a single driving module structure. For example, in the traditional design, the optical scanning module 13 is fixed to the transmission belt 19 by a coupling member 1 3 1. Therefore, when the transmission belt 19 is rotated, the optical scanning module 13 can follow Shift. However, when scanning, the scan resolution depends on the distance moved per unit of exposure time. Due to the advancement of technology, the demand for high-resolution and high-speed scanning is getting higher and higher in the future.

516305 V. Description of the invention (2) The group must be slow in the unit, and large in the low pair, that is, to drive the optical scanning resolution, for example, to drive multiple groups of light up to 48 times in groups, there will be difficulties in DC motors. Increase the overview of the present invention. Therefore, provide a first drive, a second drive, and a drive mechanism, which can simultaneously scan the two-way drive mechanism of the present invention, and move a small displacement distance under the second inactive exposure time. 'That is, when scanning at resolutions, the displacement of the optical scanning module is relatively fast. However, in the conventional technology, a single driving module is used to describe the module movement, which cannot provide simultaneous and low scanning requirements. For comparison, 2 4 0 0 d p i and 50 0 d p i are taken as an example. Using the same driving chess scanning module, the difference in travel speed of the optical scanning module is. Therefore, it is quite difficult to use the same driving chess in such a wide range. For example, the stepping motor or component cost of the driving module will increase, and the torque will be reduced. The structure is set in another position of the light in the first manuscript. The main purpose of driving the light transmission of the light mechanism is to drive the device, which includes the internal part of the image scanning device of the scanning module. Space, the tracing module group moves on the second and carries the driving combined with the first driving mechanism to make the optical scanning module a scanning set of the first group to move, which is the driving mechanism of the isotropic optical scanning module And the second drive and the first drive mechanism are reversed so that the optical 516305. 5. Description of the invention (3) The scanning module may be different to correspond to the driving direction determined by another bidirectional driving method of the present invention during the scanning operation. One scan of the light, so that the middle is based on the scan of the learned scan group and the oblique wheel set, and to achieve the first optical movement, the second scan module Good drive module. The gear set drives the present invention with the attached drawing method, and the drive module is scanned along the optical drive of the drive mode of the drive machine according to the present invention. The drive mechanism of the drive mechanism is constituted by the first drive of the drive mechanism. The method transmission structure and the system package and bearing of the inner ring structure of the package package on the drawing model are different in that the speed is provided by the first and second drive first drive groups, which includes a migration aspect for this purpose. Or the external gear includes a scanning resolution of the document to be scanned, a scanner drives the simultaneous driving mechanism to be scanned, and the belt is connected to the extended torus. The structure for driving the horse-driven driving mechanism can also be a lead screw It can be driven by the first transmission of the invention. The first drive performs image scanning. The optical scanning drive machine drives the second drive in the same direction. The preferred motor can be driven by the teeth. In advance, it is provided with a gear drive motor, a screw, and a drive mechanism for driving the drive motor to drive the Move like scanning. In an embodiment, the belt drives a motor to communicate with the optical scanning mode. The optics will be explained in one step by using a stepping horse motor, through the helical gear and its structural design. Among them: (1) The following diagram will be briefly explained. Body view; Three-dimensional view of traditional platform image scanning equipment image scanning device; Partial section of the device

Page 6 516305 V. Description of the invention (4) Figure 3 shows the schematic diagram of the internal components in the traditional optical scanning module; Figure 4 shows the perspective view of the first embodiment of the present invention; Figure 5 shows the first embodiment of the present invention Partial sectional perspective view; Figure 6 shows the internal components of the optical scanning module in Figure 5; Figure 7 shows the perspective view of the second embodiment of the present invention; Figure 8 shows the perspective view of the third embodiment of the present invention. (II) Explanation of drawing number: 11 image scanning device body 12 manuscript bearing surface 13 optical scanning module 131 coupling 14 image sensing element 14a, 14b guide 15 focusing lens 16 light source 171 M 72 > 173 '174 reflecting lens 18 Motor 19 Transmission belt 2 Documents to be scanned 31 Image scanning device body 32 Document loading surface 33 Optical scanning module 34 Guide bar

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516305 V. Description of the invention (5) 4 40 41 42 43 5 Belt internal tooth name P positioning member drive motor external gear gear 5 a 51 6 6 1 62 helical gear drive motor lead screw drive motor helical gear set

Description of the embodiment: First embodiment: Refer to FIG. 4 and FIG. 5, which respectively show a perspective view and a partial cross-sectional perspective view of the first embodiment of the present invention, which includes an image scanning device body 31 and a manuscript bearing surface 32. , An optical scanning module 33, a guide rod 34 and other components.

A belt 4 is provided on the inner wall surface of the image scanning device body 31 and adjacent to one side end of the optical scanning module 33. The belt 4 extends in the moving direction of the optical scanning module 33, and one end thereof It is supported by the positioning member 41, and the other end is driven by a driving motor 42. In this embodiment, the inner ring surface of the belt 41 is provided with an inner tooth portion 40. The belt 4 and the drive motor 42 constitute the load-bearing drive mechanism of the present invention.

Page 8 516305 V. Description of the invention (6) In addition, at the end of the optical scanning module 33, a gear 5 is protruded, and the gear 5 can be driven by one of the motors provided in the optical scanning module 33. Driven by p, rotating (see also Figure 6). The gear 5 and the driving motor 51 constitute the optical scanning module driving mechanism of the present invention. μ f L gear 5 ί drive motor 5 1 action, because the gear 5 system meshes = ί internal tooth portion 40, it can drive the optical scanning chess group 33 to move along the extension direction of the guide cup 34 = ^ ▼ 4 ( For example, its traveling speed is η). When the direction of the Xiguangyan motor 42 when driving the belt 4 is also the same as the two λ and two displacement directions (for example, its moving speed i speed), the degree of the μ scanning module 33 relative to the scanned document: n + V2 . The speed at this time is suitable for low-resolution scanning m = when the direction of the belt 4 is opposite to the direction of the entire optical J direction (for example, its moving speed is V2), it is V = V 1 ~ V 2 ,,, and 3 is relative to the scanning speed of the manuscript being scanned. The speed at this time is suitable for high-resolution scanning. If it is; ϊ: ΐ: Up to 42, 51 can use stepper motor or DC motor , (If full 3 ^^ 1 is reached, the number of steps can be set to all steps and other step modes. Half step, 1/4 step, or 1/8 step mode The driving of the guest f motors 42 and 51 can be matched with the driving direction and step. The second embodiment: the speed mode is used to meet the actual scanning requirements.

Page 9 516305 V. Explanation of the invention (7) Fig. 7 shows the driving structure of the second embodiment of the present invention. The structural design of this embodiment is substantially the same as that of the aforementioned first embodiment, and the difference lies in the bearing driving mechanism. The outer ring surface of the belt 4 is provided with an external tooth portion 43, and the external tooth portion 43 can feed the gear 5 of the optical scanning module driving mechanism. The transmission principle of this embodiment is similar to the aforementioned first embodiment. That is, if the direction of the right drive motor 4 2 when driving the belt 4 (for example, its displacement = speed, is VI) is the same as the gear 5 of the optical scanning module 33 (for example, its displacement speed is V 2), then The moving speed of the entire optical scanning module 3 3 relative to the scanned document is V = v 1 + V 2 ^ = The direction of the moving motor 42 when driving the belt 4 (for example, its moving speed = ^ 1) is ^ this If the displacement direction of the optical scanning module 33 is opposite (for example, the second speed of ye is V 2), the moving speed of the entire optical scanning module 33 with respect to the scanned handle is V = V1-V2. The third embodiment: ... = shows the driving structure of the third embodiment of the present invention, and this-implementation ^ The design of the structure is based on the lead screw 6, the driving motor 61, and the helical gear set 62 ί ΐ Γ t Load driving mechanism: The lead screw 6 can be sprayed with the optical scanning from the gear 5a. The lead screw 6 can be rotated by a helical gear set 62. 1 inverse 〇1, the main drive motor 6 1 through the helical gear set 62 to drive the lead screw 6 to rotate the tooth movement (for example, its travel speed is V1) and the oblique light of the optical scanning module 33: = the same words (for example The resulting migration speed is V2), then the migration speed of the entire ν = Γι ^ f module 33 relative to the scanned document is

Page 10 516305 V. Description of the invention (8) When the driving motor 61 drives the lead screw 6 through the helical gear set 62, the displacement (for example, its traveling speed is V 1) and the oblique second of the optical scanning module 3 3 If the opposite is true (for example, the movement speed generated by it is V2), then the entire movement speed of the scanning module 3 3 relative to the scanned manuscript is v ~ v1 -V2. The example on the moving mechanism 2 shows that In the present invention, the purpose of using the optical scanning module to drive the scanning module and the supporting drive mechanism to drive the optical in the same direction or the opposite direction at the same time is to move, so as to increase the scanning speed or reduce the scanning speed. User requirements for scanning resolution. As a result of the relative movement between the moving mechanism and the bearing drive mechanism, the degree of accuracy is the sum or difference between the speed of the optical scanning module and the speed of the scanned document. That is to say, if the two driving mechanisms move the moving mechanism to the direction of movement, the scanning speed is doubled. Similarly, if the dual-use moving ball type is used, the moving direction is opposite, and the speed of the scanned document is two degrees lower than that of the scanned document. Motivation for high resolution. When it is necessary to use a low driving speed, you can use the characteristics of the original motor and the riding speed difference to change the driving speed value of the two modules. It is clear that the expected effect can be achieved, and indeed it has a high degree of industrial profit. The embodiment is listed on the specific structure of the present invention. A detailed embodiment description & example can be explained according to the preferred embodiment of the present invention. Good at this technique. ^ The spirit of this embodiment is extended to extend the application of the present invention. These changes still belong to the inventive spirit of the present invention and have been heard in the following circles.

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Claims (1)

516305 6. Scope of patent application1. A bidirectional driving device of a scanner optical scanning module, which is used to drive the optical scanning module of the scanning device to move in a predetermined movement direction to scan an image of a manuscript to be scanned. The driving device includes: a first driving mechanism provided in an internal space of the image scanning device; a second driving mechanism provided in the optical scanning module and carrying and being combined with the first driving mechanism; wherein the optical scanning module is in Driven by the second driving mechanism, the first driving mechanism can move at the same time, so that the optical scanning module scans the document to be scanned. 2 · If the bidirectional driving device of the scanner optical scanning module of the first patent application range, wherein the first driving mechanism includes a belt and a driving motor, the belt extends in the moving direction of the optical scanning module. May: be driven by the drive motor; and the second drive mechanism includes a drive motor and a gear, the gear system is driven by the drive motor and protrudes from one side end of the optical scanning module, and The belt is engaged with the first driving mechanism. 3. The bidirectional driving device of the scanner optical scanning module according to item 2 of the patent application, wherein the inner ring surface of the belt is provided with an internal tooth portion which meshes with the gear of the driving mechanism of the optical scanning module. 4 · The two-way driving device of the optical scanning module of the scanner according to item 2 of the patent application, wherein the outer ring surface of the belt is provided with external teeth which mesh with the gears of the optical scanning module driving mechanism. 5. Bidirectional drive of the scanner optical scanning module as described in the patent application No. 2 516305 6. Scope of patent application The moving device, in which the driving motor of the first driving mechanism and the second driving mechanism is a stepping motor. 6. The bidirectional driving device of the scanner optical scanning module according to item 1 of the patent application scope, wherein the first driving mechanism includes a lead screw, a drive motor, and a helical gear set, and the lead screw system can be driven by the drive motor. Driven by a helical gear set; and the first driving mechanism includes a drive motor and a bevel gear, the bevel gear is driven by the drive motor and protrudes from one side end of the optical scanning module, and The lead screw can be engaged with the first driving mechanism. 7. The bidirectional driving device of the optical scanning module of the scanner according to item 6 of the patent application, wherein the driving motor of the first driving mechanism and the second driving mechanism is a stepping motor. 8 · If the bidirectional driving device of the scanner optical scanning module of the first patent application scope, wherein the driving direction of the second driving mechanism when driving the optical scanning module is the same as that of the first driving mechanism . 9. The bidirectional driving device of the scanner optical scanning module according to item 1 of the patent application range, wherein the driving direction of the second driving mechanism when driving the optical scanning module is opposite to that of the first driving mechanism . 1 0. A bidirectional driving method of a scanner optical scanning module, comprising a first driving mechanism provided in the image scanning device and a second driving mechanism provided in the optical scanning module of the image scanning device, the method The method includes the following steps: a. Driving the first driving mechanism to transmit in a predetermined driving direction; b. Driving the second driving mechanism at the same time to drive the optical scanning module along 516305 VI. Scope of patent application: Move along the transmission direction of the first drive mechanism; C. Use the optical scanning module to scan the image of the manuscript to be scanned. 1 1 · The bidirectional driving method of the scanner optical scanning module according to item 10 of the patent application range, wherein the transmission direction of the second driving mechanism when driving the optical scanning module is the same as that of the first driving mechanism Driving direction 0 1 2. The bidirectional driving method of the scanner optical scanning module according to item 10 of the patent application scope, wherein the driving direction of the second driving mechanism when driving the optical scanning module is opposite to that of the first Drive direction of drive mechanism0 Page 14