TWM445308U - Portable scanner - Google Patents

Description

Portable scanner

The present invention relates to a scanning system, in particular to a portable scanning device, and has the functions of automatic paper feeding scanning and manual scanning.

In order to make it easier and faster to use, store and publish documents, many applications today require optical scanners. The text or graphic data on paper as a carrier is converted into an electronic format by an optical scanner to facilitate subsequent data processing. One of the most commonly used optical scanners is a flatbed scanner 90 having a transparent scanning plane 91 with a movable scanning device 92 disposed beneath the scanning plane 91. The original is laid on the scanning plane 91 at the time of use, and the scanning device 92 is moved to scan on the original. Such a flatbed scanner 90 provides excellent scanning quality. However, the overall volume is large, so with the user's demand for mobility, a portable scanner is also produced.
Currently, the existing portable scanners can be roughly divided into a feed scanner and a handheld scanner. Please refer to the second figure. The feed scanner is compared with the platform scanner 90. The image sensor (not shown) of the scanner 93 remains stationary. On the contrary, the feed scanner 93 is provided with an automatic document feeder 94 for feeding the original, and the original is gradually driven by the automatic document feeder 94. The content of the entire manuscript is scanned by an image sensor (not shown). The image scanned by the feed scanner 93 is excellent in quality, but only an original having a size smaller than the machine itself can be scanned; therefore, the feed scanner 93 cannot scan a large original in consideration of portability.
Another type of scanner is a hand-held scanner 95. Referring to the third figure, the hand-held scanner 95 omits the mechanism for feeding the manuscript, so that the user must manually sweep the entire manuscript in a hand-held manner. Surface to get the content in the manuscript. Compared to the feed scanner 93, the handheld scanner 95 can be scanned without being limited by the size of the original. In addition, the hand-held scanner 95 is more capable of scanning large originals by scanning the combined image calculation method with an appropriate path.
However, the image quality scanned by the handheld scanner 95 is also inferior to that of the feed scanner 93 because the speed at which the user moves the scanner is difficult to maintain, and the scan may be slightly off the predetermined scan path or may occur. Jitter, all of the above factors can make the scanned image skew or deform.
In view of the above shortcomings, the existing portable scanners need to be improved.

The purpose of this creation is to provide a portable scanner that has both manual scanning and automatic feed scanning functions, and maintains scanner portability and low production cost.
In order to achieve the above object, the portable scanner of the present invention comprises: a casing, the casing is arranged in an elongated shape, and an accommodation space is disposed inside the casing, and a handheld scanning area is respectively defined at the outer surface. And a feed scanning area, wherein a long scanning window is respectively arranged in the handheld scanning area and the feed scanning area, so that the accommodating space communicates with the outside by the scanning window.
a first image sensing device, the first image sensing device is movable and disposed in the accommodating space, the first image sensing device includes at least one switching device and an image sensor, and the image sensor is disposed on the switching device And switching the handheld scanning area or the feeding scanning area by switching the orientation of the image sensor by switching the device; and a paper feeding mechanism installed at the surface of the feeding scanning area to feed the original through The scan window on the feed scan area.
In a preferred embodiment, the hand-held scanning area and the feed scanning area are disposed on opposite sides of the housing. The switching device includes a rotating shaft and a switching switch coupled to the rotating shaft, the rotating shaft is pivotally connected in the accommodating space and switches the angle of the rotating shaft by the switching switch, and the image of the first image sensing device The sensor is connected to the rotating shaft, and when the rotating shaft rotates, the image sensor can be synchronously driven to change the orientation of the image sensor.
In this preferred embodiment, the paper feeding mechanism is disposed on the surface of the feed scanning area, and forms a scanning path for feeding the document together with the feed scanning area, and includes a paper feeding wheel and a driving motor for driving the paper feeding wheel. The paper feed roller is movably coupled to the paper feed mechanism and projects the rim of the paper feed roller to the scan path to feed the original. Further, a second image sensing device is further disposed in the paper feeding mechanism, and the second image sensing device is opposite to the first image sensing device.
The present invention is characterized in that a movable first image sensing device is arranged in the scanner, and the first image sensing device is installed in the scanner and includes at least one switching device and an image sensor, and the image sensor is set. On the switching device, the orientation of the image sensor is changed by the switching device, so that different modes of handheld scanning or automatic feed scanning can be switched. Therefore, this creation only needs to use a set of image sensors to perform different scanning modes, which simplifies the structure of the scanner and reduces the production cost.

In order to explain in detail the technical content, structural features, goals and effects of the present invention, the following is a detailed description with reference to the drawings.
Referring to the fourth and fifth figures, as shown in the figure, the portable scanner of the present invention comprises a casing 10 which is arranged to facilitate the grasping and scanning of the long strip of documents. An accommodating space 11 is defined in the interior of the housing 10, and a handheld scanning area 12 is defined above the housing 10. A feed scanning area 13 is defined below the housing 10 to enable the handheld scanning area 12 and the feed. The scanning areas 13 are respectively disposed on opposite sides of the casing 10. Thereby, the hand-held scanning area 12 and the feed scanning area 13 are separated from each other. In addition, the surface of the hand-held scanning area 12 and the feed scanning area 13 are respectively provided with an elongated scanning window 14, which extends in the same direction as the casing 10, and communicates the internal accommodating space 11 with the outside.
A movable first image sensing device 20 and a control circuit for controlling the scanner (not shown) are disposed in the accommodating space 11, but since the control circuit portion is not a creative feature of the creation, it is not Narration. The first image sensing device 20 includes a switching device 21 and an image sensor 24 mounted on the switching device 21, and the switching device 21 switches the orientation of the image sensor 24. The image sensor 24 in this embodiment is a contact image sensor, which includes a plurality of image sensing element groups, and each image sensing element group is linearly arranged to form an array, and the image is made. The overall length of the sensor array is equivalent to the width of the scannable file. Each of the image sensing element groups includes a photosensitive element 25, a focusing lens 26 and a light source 27. When scanning, each image sensing element group scans the data in a small area of the original and then adds Combine to form a complete file content.
The switching device 21 includes a rotating shaft 22 and a switching switch 23 coupled to the rotating shaft 22. The rotating shaft 22 is pivotally connected to the receiving space 11 and switches the angle of the rotating shaft 22 by the changeover switch 23. The image sensor 24 is connected to the rotating shaft 22, and when the rotating shaft 22 rotates, the image sensor 24 can be synchronously driven to change the orientation of the image sensor 24. The image sensor 24 can be switched to a handheld scan or an automatic feed scan as the actual use requirements. In this possible embodiment, the switch 23 is set as a manual knob and the switch 23 further includes a position sensor 28. When the user rotates the manual knob to change the orientation of the image sensor 24, the position sensor 28 can sense The position of the shaft 22 is rotated and the position signal is fed back into the control circuit, whereby the control is scanned in different ways. However, the manual knobs described herein are for convenience of description and are not intended to be limiting. That is, the changeover switch 23 can also be set as an electric motor or other feasible device according to actual needs.
A paper feeding mechanism 30 for feeding an original through the scanning window 14 is further provided on the surface of the above-mentioned feed scanning area 13, and in this possible embodiment, the paper feeding mechanism 30 is mounted on the surface of the feed scanning area 13. And separated from the feed scanning area 13 by a predetermined distance, a scanning path 31 through which the original passes is formed between the paper feeding mechanism 30 and the scanning window 14 of the feed scanning area 13. The paper feeding mechanism 30 includes a paper feeding wheel 32 and a driving motor 33 for driving the paper feeding wheel 32. The paper feeding wheel 32 is pivotally pivoted in the paper feeding mechanism 30, and the rim is fed by the paper feeding mechanism 30. The inner side protrudes outwardly onto the scanning path 31. Further, a follower wheel 34 is provided on the surface of the feed scanning area 13 corresponding to the paper feed wheel 32, so that the original entering the scanning path 31 is on the paper feed wheel 32 and the driven wheel 34. The belt can be passed through the scanning window 14 at a uniform speed and smoothly, and a good scanned image is obtained.
In another possible embodiment, the second image sensing device 40 is further disposed in the paper feeding mechanism 30. The second image sensing device 40 is disposed under the scanning window 14 of the feed scanning area 13 and disposed opposite to the first image sensing device 20. Referring to the sixth figure, the first image may be sensed when the original is passed by the scanning path 31. The device 20 and the second image sensing device 40 simultaneously scan both sides of the original.
Referring again to the fifth to eighth figures, the flow of scanning by the user using this creation is shown:
When the user needs to scan a large number of files of fixed size, the knob can be switched to the position of the feed scan to switch to the mode of automatic paper feed scanning, as shown in the sixth and seventh figures, at this time, the switching device 21 The lower rotation causes the first image sensing device 20 to align with the scanning window 14 on the feed scanning area 13, and the position sensor 28 feeds back the position signal to switch the scanner to the feed scanning mode.
Then, the original can be placed in the scanning path 31, and the original can be automatically passed through the scanning path 31 at a stable speed by the cooperation of the paper feeding wheel 32 and the driven wheel 34 to obtain a better scanned image. If there are data on both the front and back sides of the original, the back side of the original can be simultaneously scanned by the second image sensing device 40 installed in the paper feeding mechanism 30.
When the user wants to scan a large original, or an original that is not suitable for scanning by the paper feeding mechanism 30, such as a book, the manual knob can be switched to the position of the hand-held scanning, as shown in the fifth and eighth figures. The first image sensing device 20 is aligned with the scanning window 14 on the hand-held scanning area 12, and the position sensor 28 feeds back the position signal to cause the scanner to switch to the hand-held scanning mode.
In this way, the user can hold the scanner and scan along the surface of the document, and the document image in the scanning range can be obtained every time the scanner is scanned over the surface of the original, and since the original is scanned, even if the original is too large or too thick Scanning is also possible when you cannot send to the scanner.
In summary, the present invention differs from the prior art in that a movable first image sensing device 20 is disposed in the scanner, and the first image sensing device 20 is disposed in the scanner and includes at least one switching device. 21 and an image sensor 24, the image sensor 24 is disposed on the switching device 21, and the switching device 21 changes the orientation of the image sensor 24 to switch the mode of the handheld scanning or the automatic feed scanning. Therefore, this creation only needs to use a set of image sensors to perform different scanning modes, which simplifies the structure of the scanner and reduces the production cost.

10‧‧‧Shell 11‧‧‧ accommodating space 12‧‧‧Manual scanning area 13‧‧‧Feed scanning area 14‧‧‧Scan window 20‧‧‧First image sensing device 21‧‧‧ Switching device 22 ‧‧‧Rotary shaft 23‧‧‧Toggle switch 24‧‧‧Image sensor 25‧‧‧Photosensitive element 26‧‧‧Focus lens 27‧‧‧Light source 28‧‧‧ Position sensor 30‧‧Feed mechanism 31 ‧‧‧Scanning path 32‧‧‧Feeding wheel 33‧‧‧Drive motor 34‧‧‧Drive wheel 40‧‧‧Second image sensing device 90‧‧‧ Platform scanner 91‧‧‧ scanning plane 92‧‧ ‧Scanning device 93‧‧‧Feed Scanner 94‧‧‧Automatic Document Feeder 95‧‧‧Handheld Scanner

The first picture is a perspective view of a conventional flatbed scanner.
The second figure is a perspective view of a conventional feed scanner.
The third figure is a perspective view of a conventional handheld scanner.
The fourth picture is a perspective view of the creation.
The fifth picture is a cross-sectional view of the creation.
The sixth figure is a schematic diagram of turning the knob to change the scanning mode.
The seventh figure is a schematic diagram of the use of the authoring scanner to switch to automatic paper feeding scanning.
The eighth figure is a schematic diagram of the use of the authoring scanner to switch to handheld scanning.

10‧‧‧shell

11‧‧‧ accommodating space

12‧‧‧Handheld scanning area

13‧‧‧Feed scan area

14‧‧‧Scan window

20‧‧‧First image sensing device

21‧‧‧Switching device

22‧‧‧Rotary axis

24‧‧‧Image sensor

25‧‧‧Photosensitive elements

26‧‧‧focus lens

27‧‧‧Light source

28‧‧‧ position sensor

30‧‧‧Paper feeding mechanism

31‧‧‧ scan path

32‧‧‧Feeder wheel

33‧‧‧Drive motor

34‧‧‧ driven wheel

40‧‧‧Second image sensing device

Claims (5)

A portable scanner comprising:
a housing, an accommodating space is disposed inside the housing, and a handheld scanning area and a feed scanning area are respectively defined at the outer surface, and a scanning window is respectively disposed on the surface of the handheld scanning area and the feed scanning area, so that The accommodating space communicates with the outside by scanning the window;
a movable first image sensing device is disposed in the accommodating space and includes at least one switching device and an image sensor. The image sensor device is connected to the switching device, and the switching device changes the orientation of the image sensor. And can switch to scan the handheld scanning area or the feed scanning area;
A paper feeding mechanism is provided at the surface of the feed scanning area to feed the original through the scanning window on the feed scanning area. The portable scanner of claim 1, wherein the handheld scanning area and the feed scanning area are disposed on opposite sides of the housing. The portable scanner of claim 1, wherein the switching device comprises a rotating shaft and a switching switch coupled to the rotating shaft, the rotating shaft is pivotally connected in the accommodating space and borrowed The switch switches the angle of the rotating shaft. The image sensor of the first image sensing device is connected to the rotating shaft. When the rotating shaft rotates, the image sensor can be synchronously driven to change the orientation of the image sensor. The portable scanner according to claim 1, wherein the paper feeding mechanism is mounted on a surface of the feed scanning area, and forms a scanning path for feeding the document together with the feed scanning area, and includes a paper feed roller and A drive motor that drives the paper feed roller, the feed roller is movably coupled to the paper feed mechanism and projects the rim of the paper feed roller to the scan path to feed the original. The portable scanner according to claim 4, wherein the paper feeding mechanism is further provided with a second image sensing device, and the second image sensing device is opposite to the first image sensing device.