JPWO2009122493A1 - Fingerprint reader, information processing device - Google Patents

Abstract

The present invention relates to a slide-type fingerprint reader that slides a finger on a fingerprint sensor, and includes a ride-type fingerprint sensor and a positioning structure that positions a first joint portion of the finger at a central position of the fingerprint sensor.

Description

  The present invention relates to a fingerprint reading apparatus and an information processing apparatus, and more particularly to a slide type fingerprint reading apparatus that slides a finger on a fingerprint sensor and an information processing apparatus including the fingerprint reading apparatus.

  In recent years, in the field of information processing devices such as PCs (Personal Computers), PDAs (Personal Digital Assistants), mobile phones, etc., there has been provided a slide type or sweep type (hereinafter referred to as slide type) fingerprint sensor that can realize a small and inexpensive device. Fingerprint readers are becoming popular.

  1A to 1C are views for explaining a fingerprint reading range and a reading method in such a slide type fingerprint reading apparatus. In the slide-type fingerprint reader, since the portion (indicated by an arrow L in the figure) ahead of the first joint J1 of the normal finger F is the reading range, the first joint portion J1 of the finger F to be scanned is a fingerprint sensor. It is necessary to correctly place the finger on the scanning surface so as to be near the center of 1 (see FIGS. 1B and 1C).

  As shown in FIG. 2A, when the center of the finger F is scanned in the direction of the arrow X so as to pass through the center position O of the fingerprint sensor 1, the fingerprint FP can be reliably read. However, when reading the fingerprint, the fingerprint sensor 1 is hidden by the finger F and it is difficult to align the first joint J1 with the fingerprint sensor 1 well.

  Therefore, the first joint J1 cannot be correctly positioned so as to be positioned at the center position O of the fingerprint sensor 1. For example, as shown in FIG. 2B, the position of the first joint J1 is relative to the center position O of the fingerprint sensor 1. The position of the first joint J1 may be lower than the center position O of the fingerprint sensor 1 as shown in FIG. 2C. In such a case, there is a problem that an image in a range to be read is lost, a sufficient image cannot be obtained, and authentication fails.

  As a method for solving such problems, the fingerprint sensor is located near the fingerprint sensor from a position slightly shifted from right to left so that the fingerprint sensor is not hidden by the finger, and the first joint of the finger is the fingerprint sensor. It is conceivable to place a finger so that it is located in the center of the screen. However, this method has a problem in that a cramped posture is imposed for fingerprint scanning every time.

  As a method for solving the above-described problem, Patent Document 1 discloses that a guide portion is a pair of ridges arranged substantially parallel to each other, and each ridge as the guide portion extends in the direction of movement of the finger. The configuration is disclosed. Further, it is described that two guide portions having a projection slightly narrower than the finger width are provided along the moving direction (front and back) of the roller and the finger immediately behind the transparent member for reading the fingerprint.

  Patent Document 2 discloses a configuration having a switch for detecting the presence or absence of a subject's finger F in front of the fingerprint scanning direction slightly away from the fingerprint sensor. This switch is configured to be pressed by the belly of the finger above the first joint.

Furthermore, in Patent Document 3, a pair of case pads are provided on both sides of the V-shaped groove, and these case pads play a role as an index of the finger position at the time of fingerprint detection, and a fingerprint is detected by a sweep type fingerprint sensor. When trying to do, it is disclosed that the first joint closest to the tip of the finger is applied so that the finger is positioned on a straight line connecting the two case pads.
Japanese Patent Laid-Open No. 2004-240924 JP 2004-272745 A Japanese Patent Laid-Open No. 2005-259150

  In the method disclosed in Patent Document 1 above, the abdomen of the finger is placed evenly on the two guide portions that are slightly narrower than the finger width, thereby making the direction perpendicular to the finger scanning direction of the fingerprint sensor. It seems that guidance to the first finger placement position in the central part is possible to some extent. However, there is no disclosure of a method for correctly placing the first joint portion of the finger in the vicinity of the fingerprint sensor center with respect to the finger scanning direction of the fingerprint sensor.

  Further, in the method disclosed in Patent Document 2, it is pressed down with the belly of the finger above the first joint, and it is not always possible to press at the center of the belly as seen only from the back side of the finger. For this reason, a sufficient fingerprint image cannot be obtained, and authentication may fail.

  Furthermore, in the method disclosed in Patent Document 3, when the finger is viewed from the back side, the position of the first joint cannot be easily determined, and a sufficient fingerprint image cannot be obtained and accurate authentication may not be obtained. There is.

  SUMMARY OF THE INVENTION It is a general object of the present invention to provide an improved and useful fingerprint reading apparatus and an information processing apparatus including the fingerprint reading apparatus that solve the above-described problems of the prior art.

  A more detailed object of the present invention is to provide a fingerprint reader capable of positioning a finger at an appropriate reading position without being forced to be in a cramped posture and performing accurate fingerprint authentication, and an information processing apparatus including the fingerprint reader. There is.

  This object can be solved by a fingerprint reader having a slide type fingerprint sensor and a positioning structure for positioning the first joint portion of the finger at the center position of the fingerprint sensor.

  According to the above fingerprint reader, the finger can be correctly positioned at an appropriate position with respect to the fingerprint sensor, and the authentication accuracy can be improved.

It is a figure for demonstrating the range which performs fingerprint reading. It is a figure for demonstrating the scanning method of the finger at the time of fingerprint reading (the 1). It is a figure for demonstrating the scanning method of the finger at the time of fingerprint reading (the 2). It is a figure for demonstrating the position of a fingerprint sensor, and how to put a finger (when appropriate). It is a figure for demonstrating the position of a fingerprint sensor, and how to put a finger | toe (when it is inappropriate 1). It is a figure for demonstrating the position of a fingerprint sensor, and how to put a finger | toe (when it is inappropriate 2). 1 is a perspective view showing a personal computer provided with a fingerprint reading apparatus according to a first embodiment. FIG. 4 is an enlarged view showing a portion indicated by an arrow X in FIG. 3 during fingerprint reading. It is a figure which expands and shows the part shown by the arrow X in FIG. 3 after fingerprint reading. It is a top view which shows the fingerprint reader which is 1st Example of this invention. It is sectional drawing which shows the fingerprint reader which is 1st Example of this invention. It is a top view which shows the fingerprint reader which is 2nd Example of this invention. It is sectional drawing which shows the fingerprint reader which is 2nd Example of this invention. It is a top view which shows the fingerprint reader which is 3rd Example of this invention. It is sectional drawing which shows the fingerprint reader which is 3rd Example of this invention, and shows the state before scanning a finger. FIG. 7 is a cross-sectional view illustrating a fingerprint reading apparatus according to a third embodiment of the present invention and a state in which a finger is being scanned. It is a top view which shows the fingerprint reader which is 4th Example of this invention. It is a sectional view showing a fingerprint reader which is the 4th example of the present invention, and showing a state before scanning a finger. It is sectional drawing which shows the fingerprint reading apparatus which is 4th Example of this invention, and shows the state in the middle of the scanning of a finger | toe. It is a top view which shows the fingerprint reader which is 5th Example of this invention. It is sectional drawing which shows the fingerprint reader which is 5th Example of this invention, and shows the state before scanning a finger. FIG. 10 is a cross-sectional view illustrating a fingerprint reading apparatus according to a fifth embodiment of the present invention, in a state where a finger is being scanned. It is a top view which shows the fingerprint reader which is 6th Example of this invention. It is sectional drawing which shows the fingerprint reader which is 6th Example of this invention, and shows the state before scanning a finger. It is sectional drawing which shows the fingerprint reading apparatus which is 6th Example of this invention, and shows the state in the middle of the scanning of a finger | toe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fingerprint sensor 2 Front finger scanning surface 3 Back finger scanning surface 4, 5 Guide side wall 6 Button 7-9 Spring 12, 14 First uneven part 13, 15 Second uneven part 22, 23 Mirror surface processing part 24, 25 Convex 110A-110E Fingerprint reader F Finger FP Fingerprint J1 First joint

  Embodiments of the present invention will be described below with reference to the drawings.

First embodiment

  3 to 5 show application examples of the fingerprint reader 110A according to the first embodiment of the present invention. In this embodiment, an example in which the fingerprint reading device 110A is mounted on a personal computer 100, which is an example of an information processing device, is shown. The personal computer 100 has a main body 101 having a keyboard 104, a flat point 105, and the like, and a lid 102 having a liquid crystal display 103 and the like mounted thereon.

  The fingerprint reading device 110 </ b> A is disposed in the vicinity of the flat point 105. This fingerprint reading device 110A is a device that reads the fingerprint FP of the finger F, whereby only a person who has registered a fingerprint in advance can use the personal computer 100, and security can be improved.

  The fingerprint reader 110 </ b> A according to the present embodiment is a slide type fingerprint reader that reads the fingerprint FP by sliding the finger F on the fingerprint sensor 1. Specifically, as shown in FIG. 4, the finger F is placed on the fingerprint reader 110A, and the fingerprint is read by scanning the finger in the arrow X direction. At this time, as described above, it is necessary to scan the finger F by positioning the first joint portion J1 of the finger F to be scanned at the center position O of the fingerprint sensor 1.

  As shown in FIGS. 5 and 6, the fingerprint reading apparatus 110A according to the first embodiment includes a fingerprint sensor 1, a front finger scanning surface 2, a rear finger scanning surface 3, a guide sidewall 4, a guide sidewall 5, and the like. ing.

  The front finger scanning surface 2 and the rear finger scanning surface 3 constitute a scanning surface on which the finger F scans when reading the fingerprint FP. The front finger scanning surface 2 is disposed at a front position of the fingerprint sensor 1 with respect to the scanning direction of the finger F (the arrow X direction). Further, the rear finger scanning surface 3 is arranged at a rear position of the fingerprint sensor 1 with respect to the scanning direction of the finger F (the arrow X direction).

  The guide side walls 4 and 5 are disposed on both side positions of the front finger scanning surface 2 and the rear finger scanning surface 3 which are scanning surfaces of the finger F. The height of the upper surfaces of the guide side walls 4 and 5 is set to be flush with the surface of the main body 101.

  On the other hand, the front finger scanning surface 2 and the rear finger scanning surface 3 described above have curved shapes that protrude downward in a sectional view in order to smoothly scan the finger F (see FIG. 7). For this reason, the heights of the surfaces of the front finger scanning surface 2 and the rear finger scanning surface 3 are relatively lower than the heights of the upper surfaces of the guide side walls 4 and 5. Therefore, when the finger F is scanned on the scanning surface (the front finger scanning surface 2 and the rear finger scanning surface 3), both sides of the finger F are guided by the guide side walls 4 and 5, so that smooth finger scanning is performed. Can do.

  Here, attention is paid to the surfaces of the front finger scanning surface 2 and the rear finger scanning surface 3 of the fingerprint reading apparatus 110A according to the present embodiment. A first uneven portion 12 is formed on the surface of the front finger scanning surface 2 according to the present embodiment, and a second uneven portion 13 is formed on the surface of the rear finger scanning surface 3.

  The first and second concavo-convex portions 12 and 13 can be formed by performing a texture process, a knurling process, and a surface roughening process on the surfaces of the finger scanning surfaces 2 and 3. Moreover, the unevenness | corrugation state of the surface of each uneven | corrugated | grooved part 12 and 13 is set not to be the same but to a different uneven | corrugated state.

  For example, when the uneven state of the first uneven part 12 is set to be rough, the uneven state of the second uneven part 13 is set to be finer uneven than this. Moreover, it is also possible to provide unevenness only on one of the first or second uneven portions 12 and 13 and to make the other a flat surface (a surface on which unevenness is not formed).

  With this configuration, the finger F's belly has the front finger scanning surface 2 (having the first uneven portion 12) or the rear finger scanning surface 3 (second unevenness) with the fingerprint FP of the finger F slightly floating. Contact with the portion 13), the difference between the first uneven portion 12 and the second uneven portion 13 can be identified by the sense of touch of the finger F.

  As described above, since the first uneven portion 12 and the second uneven portion 13 can be identified by the sense of touch of the finger F, the position of the first joint J1 of the finger F is above or below the fingerprint sensor 1. Or the left or right side. Thereby, even when the fingerprint sensor 1 is hidden by the finger F, the first joint J1 can be adjusted so as to be positioned at the center position O of the fingerprint sensor 1. That is, the first uneven portion 12 and the second uneven portion 13 function as a positioning device that positions the first joint J1 of the finger F at the center position O of the fingerprint sensor 1.

  When the correct position of the finger F is confirmed as described above, the first joint J1 is pressed against the center position O of the fingerprint sensor 1 as shown in FIG. 7, and then the belly of the finger F above the first joint J1 is pressed. A correct fingerprint FP can be read by scanning a finger at a constant speed in the direction of arrow X in the figure while pressing the portion against the fingerprint sensor 1.

Second embodiment

  8 and 9 show a fingerprint reading apparatus 110B according to the second embodiment. In the drawings (FIGS. 8 to 33) used in the embodiments after the second embodiment (FIGS. 8 to 33), the same reference numerals are used for the configurations corresponding to the configurations shown in FIGS. A description thereof will be omitted as appropriate.

  The fingerprint reader 110 </ b> A according to the first embodiment described above has a configuration in which the uneven portions 12 and 13 are formed on the front finger scanning surface 2 and the rear finger scanning surface 3. On the other hand, in the fingerprint reader 110B according to the present embodiment, the first uneven portion 14 is formed on the upper surface of the guide side walls 4 and 5 at a position facing the front finger scanning surface 2, and the guide side walls 4 and 5 The second concavo-convex portion 15 is formed at a position facing the rear finger scanning surface 3 on the upper surface.

  The first and second concavo-convex portions 14 and 15 can be formed by subjecting the upper surfaces of the guide side walls 4 and 5 to a texture process, a knurling process, and a surface roughening process. Moreover, the unevenness | corrugation state of the surface of each uneven | corrugated | grooved part 14 and 15 is set not to be the same but to a different uneven | corrugated state.

  For example, when the uneven state of the first uneven portion 14 is set to be rough, the uneven state of the second uneven portion 15 is set to be uneven more fine than this. Moreover, it is also possible to provide unevenness only on one of the first or second uneven portions 14 and 15 and make the other a flat surface (a surface on which no unevenness is formed).

  With this configuration, when the belly of the finger F comes into contact with the guide side walls 4 and 5 while the fingerprint FP of the finger F is slightly lifted, the first uneven portion 14 and the second uneven portion 15 are caused by the sense of touch of the finger F. And the difference can be identified.

  As described above, the first concavo-convex portion 14 and the second concavo-convex portion 15 can be identified by the sense of touch of the finger F, thereby recognizing the deviation of the position of the first joint J1 of the finger F from the fingerprint sensor 1. it can. Thereby, even when the fingerprint sensor 1 is hidden by the finger F, the first joint J1 can be adjusted so as to be positioned at the center position O of the fingerprint sensor 1. That is, the first uneven portion 14 and the second uneven portion 15 function as a positioning device that positions the first joint J1 of the finger F at the center position O of the fingerprint sensor 1.

  When the correct position of the finger F is confirmed as described above, the first joint J1 is pressed against the center position O of the fingerprint sensor 1 as shown in FIG. 9, and then the belly of the finger F above the first joint J1 is pressed. A correct fingerprint FP can be read by scanning a finger at a constant speed in the direction of arrow X in the figure while pressing the portion against the fingerprint sensor 1.

  As shown in FIG. 9, the first uneven portion 14 is formed not only on the upper surfaces of the guide side walls 4 and 5 but also on the inner wall facing the front finger scanning surface 2, and the second uneven portion 15 is formed on the guide side walls 4 and 4. 5 may be formed on the inner wall facing the front finger scanning surface 3. Thereby, position recognition by the finger F can be performed with higher accuracy.

Third embodiment

  10 to 12 show a fingerprint reader 110C according to the third embodiment. The fingerprint reading device 110 </ b> C according to the present embodiment has a configuration in which convex protrusions 24 and 25 are provided at positions facing the upper surfaces of the guide side walls 4 and 5 and the position where the fingerprint sensor 1 is disposed. The protruding amount H1 (shown in FIG. 11) of the convex protrusions 24 and 25 from the upper surfaces of the guide side walls 4 and 5 is set to 1 mm to 3 mm, for example.

  With this configuration, when the belly of the finger F comes into contact with the convex protrusions 24 and 25 while the fingerprint FP of the finger F is slightly lifted as shown in FIG. Can be recognized.

  Thus, in 110C according to the present embodiment, it is possible to recognize the positional deviation of the first joint J1 of the finger F with respect to the fingerprint sensor 1. Thereby, even when the fingerprint sensor 1 is hidden by the finger F, the first joint J1 can be adjusted so as to be positioned at the center position O of the fingerprint sensor 1. That is, the convex protrusions 24 and 25 function as a positioning device that positions the first joint J1 of the finger F at the center position O of the fingerprint sensor 1.

  When the correct position of the finger F is confirmed as described above, the first joint J1 is pressed against the center position O of the fingerprint sensor 1 as shown in FIG. 12, and thereafter, the belly of the finger F above the first joint J1 is pressed. A correct fingerprint FP can be read by scanning a finger at a constant speed in the direction of arrow X in the figure while pressing the portion against the fingerprint sensor 1.

  In the above-described embodiment, the configuration in which the convex protrusions 24 and 25 are formed at positions facing the fingerprint sensor 1 on the guide side walls 4 and 5 has been described as an example. It is good also as a structure which forms a concave hollow.

Fourth embodiment

  13 to 15 show a fingerprint reader 110D according to the fourth embodiment. The fingerprint reading device 110D according to the present embodiment forms the inner protrusions 34 and 35 on the inner walls of the guide side walls 4 and 5 at positions opposite to the positions where the fingerprint sensor 1 is disposed, so that the front finger scanning surface 2 and the rear side are formed. A narrow portion is formed on the scanning surface of the finger F configured by the finger scanning surface 3. The protruding amount W1 (shown in FIG. 13) of the inner protruding portions 34, 35 from the inner walls of the guide side walls 4, 5 is, for example, 0.5 mm to 2 mm.

  With this configuration, when the finger F is lowered toward the fingerprint sensor 1 as shown in FIG. 15 from a state where the fingerprint FP of the finger F shown in FIG. The position of the finger F with respect to the fingerprint sensor 1 can be recognized by the sense of touch of the finger F.

  As described above, since the position of the finger F with respect to the fingerprint reading device 110D can be recognized by the sense of touch of the finger F, the positional deviation of the finger F with respect to the fingerprint sensor 1 of the first joint J1 can be recognized. Thereby, even when the fingerprint sensor 1 is hidden by the finger F, the first joint J1 can be adjusted so as to be positioned at the center position O of the fingerprint sensor 1. That is, the narrow portion formed by the inner protrusion 34 and the inner protrusion 35 functions as a positioning device that positions the first joint J1 of the finger F at the center position O of the fingerprint sensor 1.

  When the correct position of the finger F is confirmed as described above, the first joint J1 is pressed against the center position O of the fingerprint sensor 1 as shown in FIG. 15, and then the belly of the finger F above the first joint J1 is pressed. A correct fingerprint FP can be read by scanning a finger at a constant speed in the direction of arrow X in the figure while pressing the portion against the fingerprint sensor 1.

  In the above-described embodiment, the configuration in which the convex protrusions 24 and 25 are formed at positions facing the fingerprint sensor 1 on the guide side walls 4 and 5 has been described as an example. It is good also as a structure which forms a concave hollow.

Example 5

  16 to 18 show a fingerprint reader 110E according to the fifth embodiment. The fingerprint reading device 110E according to the present embodiment forms the mirror surface processing units 22 and 23 by performing mirror surface processing on the front finger scanning surfaces 2 and 3.

  With this configuration, when the finger F is held over the mirror surface processing unit 22 and the mirror surface processing unit 23 and the mirror surface processing units 22 and 23 are viewed from the front at this point (see FIG. 17), the finger F is subjected to the mirror surface processing. It is projected on the parts 22 and 23 (the first joint J1 is also projected). Therefore, a person who wants to read a fingerprint can position the first joint J1 with respect to the fingerprint sensor 1 while viewing the mirror image displayed on the mirror surface processing units 22 and 23.

  As described above, the fingerprint reading device 110E according to the present embodiment can recognize the displacement of the first joint J1 relative to the fingerprint sensor 1 by looking at the mirror image displayed on the mirror processing units 22 and 23. Thereby, even when the fingerprint sensor 1 is hidden by the finger F, the first joint J1 can be adjusted so as to be positioned at the center position O of the fingerprint sensor 1. That is, the mirror surface processing units 22 and 23 function as a positioning device that positions the first joint J1 of the finger F at the center position O of the fingerprint sensor 1.

  When the correct position of the finger F is confirmed as described above, the first joint J1 is pressed against the center position O of the fingerprint sensor 1 as shown in FIG. 21, and then the belly of the finger F above the first joint J1 is pressed. A correct fingerprint FP can be read by scanning a finger at a constant speed in the direction of arrow X in the figure while pressing the portion against the fingerprint sensor 1.

  In the above-described embodiment, the configuration in which the mirror surface processing units 22 and 23 are provided on both surfaces 2 and 3 is shown. However, as long as the finger F can be visually recognized, the mirror surface processing unit may be provided in only one of the surfaces. .

Sixth embodiment

  19 to 21 show a fingerprint reader 110F according to the sixth embodiment. The fingerprint reader 110F according to the present embodiment is provided with a button 6 at a position near the fingerprint sensor 1 on the scanning surface of the finger F.

  In this embodiment, the button 6 is arranged behind the fingerprint sensor 1 in the scanning direction X of the finger F (rear finger scanning surface 3). Further, it is provided at the center position with respect to the width direction of the fingerprint sensor 1 (left and right direction in FIG. 19). That is, the position where the button 6 is disposed is substantially the same as the center position O of the fingerprint sensor 1.

  Further, an elastic means is provided at the lower end portion of the button 6 (the back side of each finger scanning surface 2, 3), and the button 6 is elastically biased upward (in the direction of arrow Z1 in the figure) by this elastic means. ing. As the elastic means, application of a spring, plastic, rubber or the like is conceivable. In this embodiment, an example using a coiled spring 7 is shown.

  The button 6 is displaced in the Z2 direction in the figure against the elastic force of the spring 7 when pressed. At this time, the tip of the button 6 is configured to be pressed until the finger F reaches the same height as the scanning surface to be scanned. Further, by releasing the pressing, the button 6 is moved in the Z1 direction by the elastic restoring force of the spring 7 and restored to the original position. Further, the tip of the button 6 is set so as to slightly protrude from the upper surfaces of the guide side walls 4 and 5 when not pressed (see FIG. 20).

  In this way, by projecting the tip of the button 6 from the upper surfaces of the guide side walls 4 and 5, when the finger F is lowered toward the fingerprint reader 110F, the button 6 can be confirmed from the front side of the lowered position. The button 6 and the first joint J1 can be positioned.

  When the finger F is further lowered, the finger F contacts the button 6 as shown in FIG. As described above, the formation position of the button 6 substantially corresponds to the center position O of the fingerprint sensor 1. Therefore, at this time, the position of the finger F relative to the fingerprint sensor 1 can be recognized by the sense of touch of the finger F.

  As described above, the position shift of the first joint J1 of the finger F with respect to the fingerprint sensor 1 can be recognized by 110F according to the present embodiment. Thereby, even when the fingerprint sensor 1 is hidden by the finger F, the first joint J1 can be adjusted so as to be positioned at the center position O of the fingerprint sensor 1. That is, the button 6 functions as a positioning device that positions the first joint J1 of the finger F at the center position O of the fingerprint sensor 1.

  When the correct position of the finger F is confirmed as described above, the first joint J1 is pressed against the center position O of the fingerprint sensor 1 as shown in FIG. 21, and then the belly of the finger F above the first joint J1 is pressed. A correct fingerprint FP can be read by scanning a finger at a constant speed in the direction of arrow X in the figure while pressing the portion against the fingerprint sensor 1. At this time, since the button 6 has moved to the scanning surface, it does not interfere with the scanning of the finger F.

  Furthermore, by making this button 6 an electrical switch and also having a function as an application button, it becomes possible to start an application simultaneously with fingerprint authentication. Therefore, with this configuration, the application operation and the authentication operation can be performed continuously in the shortest time.

  In the above-described embodiment, the position of the button 6 on the scanning surface is arranged at the rear of the fingerprint sensor 1, but may be arranged in front of the fingerprint sensor 1 (in the front finger scanning surface 2). .

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments described above, and various modifications can be made within the scope of the present invention described in the claims. It can be modified and changed.

Claims (8)

A slide-type fingerprint sensor,
A fingerprint reader having a positioning structure for positioning a first joint portion of a finger at a central position of the fingerprint sensor. The positioning structure is
A front finger scanning surface disposed at a front position in a finger scanning direction with respect to a position where the fingerprint sensor is disposed;
A rear finger scanning surface disposed at a rear position in the finger scanning direction with respect to an arrangement position of the fingerprint sensor;
The fingerprint reading apparatus according to claim 1, wherein a surface state of the front finger scanning surface is different from a surface state of the rear finger scanning surface. The positioning structure is
A front finger scanning surface disposed at a front position in a finger scanning direction with respect to a position where the fingerprint sensor is disposed;
With respect to the arrangement position of the fingerprint sensor, the rear finger scanning plane disposed at a rear position in the finger scanning direction, the front finger scanning plane, and the both sides of the rear finger scanning plane are disposed, and scanning of the finger A pair of side walls for guiding
The fingerprint reading device according to claim 1, wherein a surface state of the upper surface of the pair of side walls is different between a position facing the front finger scanning surface and a position facing the rear finger scanning surface. The positioning structure is
A pair of side walls disposed on both sides of the scanning position of the finger and guiding the scanning of the finger;
The fingerprint reading device according to claim 1, wherein a convex protrusion or a concave depression is provided at a position facing the position where the fingerprint sensor is disposed on the upper surface of the pair of side walls. The positioning structure is
A pair of side walls disposed on both sides of the scanning position of the finger and guiding the scanning of the finger;
The fingerprint reading device according to claim 1, wherein a narrow portion is formed at a position opposite to a position where the fingerprint sensor is disposed on the pair of side walls. The positioning structure is
A front finger scanning surface disposed at a front position in a finger scanning direction with respect to a position where the fingerprint sensor is disposed;
A rear finger scanning surface disposed at a rear position in the finger scanning direction with respect to an arrangement position of the fingerprint sensor;
The fingerprint reading apparatus according to claim 1, wherein at least one of the front finger scanning surface or the rear finger scanning surface is mirror-finished. The positioning structure is
2. The button according to claim 1, wherein the fingerprint sensor has a button at a front portion or a rear portion with respect to the finger scanning direction of the fingerprint sensor that is lowered to a scanning surface where the finger scans when pressed, and elastically restored to a position before the pressing when the pressing is released. Fingerprint reader.   An information processing apparatus comprising the fingerprint reader according to claim 1.

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