JPH11203384A - Mail information reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mail information reader using an optical system for obtaining information by scanning in a main scanning direction and sub-scanning direction. SOLUTION: This reader is provided with a translucent reading window 16 for holding the surface of a mail 6 on which information of a mail is displayed, a reading optical system 14 having a photoelectric converting element 22 for optically reading mail information by moving along the upper surface of the reading window 16, and a stand 7 in press-contact with the mail 6 under the reading window 16. Thus, the mail 6 is placed on the upper surface of the stand 7, and the reading optical system 14 is moved so that mail information can be read by the reading optical system 14 through scanning in a main scanning direction and movement in a sub-scanning direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a postal information reading apparatus for reading postal information displayed on the surface of a postal matter.

[0002]

2. Description of the Related Art Conventionally, postal information such as a postal code and address display data displayed on the surface of a postal matter is read by an image reading device, and the postal matter is mechanically classified according to a delivery area to streamline postal delivery operations. That is being done.

In recent years, many direct mails have been sent to unspecified large numbers of individuals and groups, and the volume of mail has been dramatically increasing. For this reason, it is planned to display postal information on mail using a newly standardized display method. This newly standardized postal information is generated by arranging bar codes of a predetermined number of digits in the main scanning direction, and includes other information such as bar width, bar pitch, and space between bars obtained by scanning in the main scanning direction. To
This is a method in which the contents of postal information are represented by information on the length and position of a bar obtained by scanning in a sub-scanning direction orthogonal to the main scanning direction. In order to further promote the rationalization of postal services on the post office side, it has become possible to display postal information on the sender side.

[0004] On the other hand, an image reading apparatus which is conventionally available on the market, is placed on a transparent platen with the image side of a document or the like facing down, and scans a reading optical system along the platen. A flat-bed type (document fixed type) image reading device that reads a document image from the lower surface side, and a document moving type that reads an image of the document or the like from the lower side by a reading optical system in the process of transporting the document or the like. Image reading device. There is also a barcode scanner that reads a barcode displayed on a product. The barcode scanner is classified into a stationary type and a handy type.

[0005] However, the fixed-document type and the original-moving type image reading devices can read images in a two-dimensional arrangement. However, designated image reading devices such as reading only postal information out of information displayed on postal items. It is not possible to read only the information of the area.

A conventional bar code displayed on a product to be read by a bar code scanner is:
UPC (Universal Product Code), JAN (Japanese
Article Number), E established based on UPC
This is a method of reading data by scanning in the bar array direction using AN (EuroPean Article Number). Since such a barcode reads an image by scanning in a one-dimensional direction along the arrangement direction of the bars,
Conventional image reading devices and barcode scanners do not read postal information in a newly standardized display system.

[0007]

Therefore, there is a need for the development of a postal information reading apparatus which reads out postal information in a method of obtaining information by scanning in the main scanning direction and the sub-scanning direction. In this case, in order to accurately maintain the focal position of the reading optical system, it is necessary to keep the height of the reading surface of the postal matter with respect to the scanning surface of the reading optical system, but the postal matter has a constant thickness. Not so, we have to solve this. Furthermore, postal items have various sizes, and the position of postal information on the surface of the postal item is not always constant. If it becomes possible to display postal information on the sender side, it is expected that the display position of the postal information will become more and more uncertain, so the work of accurately positioning the postal information at a predetermined position in the scanning area of the reading optical system is required. It is troublesome, and a reading error easily occurs.

[0008]

According to the first aspect of the present invention,
A reading window for holding down the surface on which the postal information of the mail is displayed,
A reading optical system having an original photoelectric conversion element in which a large number of light receiving elements are arranged one-dimensionally and reading the postal information optically by moving along the upper surface of the reading window; A stand that has pressure contact means for pressing the object and is disposed opposite to the reading window and on which the mail is placed. Therefore, by placing a postal matter on the upper surface of the stand and moving the reading optical system, it is possible to read the postal information by a reading optical system in which information is obtained by scanning in the main scanning direction and moving in the sub-scanning direction. Becomes Furthermore, since it is possible to press the surface of the mail having different thicknesses against the reading window, by adjusting the focal position of the reading optical system to the lower surface of the reading window, the thickness of the mail changes. Also, the postal information can be accurately read at the focal point.

According to a second aspect of the present invention, in the first aspect of the invention, the press contact means is formed by a guide for guiding the stand so as to be able to move up and down, and a push-up mechanism for pushing up the stand. Therefore, by lowering the stand, it is possible to insert a mail having a considerable thickness between the stand and the reading window to read the postal information.

According to a third aspect of the present invention, in the first or second aspect of the invention, the push-up mechanism includes a plurality of rollers for supporting the inner surface of the stand, and a vertical direction in which the rollers are shared and rotatably supported. A plurality of displaceable roller supporting members, an urging member for urging the roller supporting members in a direction in which the rollers are displaced upward, and a connecting member for connecting the roller supporting members in an interlocking manner are formed. . Therefore, since the plurality of roller support members are interlocked, the displacement amounts are equal, and by supporting the lower surface of the stand with the plurality of rollers supported by the roller support members having the same displacement amount, it is possible to increase the horizontality of the stand. Become.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, the reading window is provided with a reading frame for designating the position of postal information. Therefore, even when the position of the postal information on the surface of the postal matter is not constant, by setting the postal information in the reading frame, it is possible to accurately read only the postal information from the various information displayed on the postal matter. Becomes possible.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. First, a main configuration of the postal information reading apparatus will be described with reference to FIG. This postal information reading device 1
Comprises a main body 2 and a scanner unit 3. The main body 2 includes a power supply unit 8 and fixedly includes a scanner unit support base 5 for supporting the scanner unit 3 in a mounted state. The main body 2 is further provided with a vertically movable stand 7 for supporting mail 6. ing. The scanner unit support 5 is fixed to bosses 9 formed at a plurality of positions on the upper portion of the main body 2 by screws 10 (see FIG. 2). The main body 2 has a scanner unit support 5 that matches a reading window described later.
Pressing means 1 for pressing the mail 6 on the stand 7 against the lower surface of the
1 is provided.

The housing 12 of the scanner unit 3 has a reading optical system 14 mounted on a carriage 13, a guide (not shown) for guiding the carriage 13 in the direction of the arrow, and a drive for driving the carriage 13 in the direction of the arrow. Mechanism (not shown)
And a substrate 15 on which a circuit is formed. The reading optical system 14 includes a reading window 1 provided on the lower surface of the housing 12.
A fluorescent lamp 17 illuminating the mail 6 via the mail 6;
Mirrors 18, 19, 20 for deflecting the reflected light from
A lens 21 for collecting light reflected from the mirror 20,
The CCD 22 is a photoelectric conversion element. CCD22
The CCD substrate 23 holding the flexible cable 2
4 to the substrate 15. Also, the housing 12
Is provided with a clear cover 25 through which the state of the postal matter 6 can be seen through the transparent reading window 16 when the carriage 13 moves to the substrate 15 side as indicated by a virtual line. At the end of the upper surface of the reading window 16, a reference white plate 26 for determining a threshold value for binarizing the read image is provided. The CCD 22 is configured by one-dimensionally arranging a large number of light receiving elements, and reads an image of a fixed one-dimensional area.

As shown in FIG. 2, the scanner unit 3 is detachably supported on a scanner unit support 5 of the main body 2. The scanner unit support 5 has a rectangular reading opening 27 for fitting the reading window 16.
And a plurality of openings 28 arranged behind the reading opening 27 and circular holes 29 arranged at both corners on the rear side. On both sides of the scanner unit support 5, locking projections (studs having a tapered upper portion) 30 arranged between the reading opening 27 and the opening 28 are provided upright. The locking holes 31 for locking with the locking projections 30 are formed on the bottom surface of the housing 12 of the scanner unit 3 as shown in FIG.

The reading window 16 is partially protruded from the lower surface of the housing 12 so as to fit into the reading opening 27 (see FIG. 2) of the scanner unit support 5.
The bottom surface of the reading window 16 of the housing 12 is provided with a rectangular flat protrusion 32 on both sides of the rear portion so that the whole can be kept flat when placed on a desk surface or the like. Are formed with circular projections 33 at the corners. These protrusions 3
The positions of the reference numerals 2 and 33 are determined so that they are fitted into the openings 28 or the circular holes 29 when the housing 12 is placed on the scanner unit support 5 (see FIG. 2).

Further, as shown in FIG. 2, bent portions 34 surrounding the periphery of the housing 12 of the scanner unit 3 are formed on the three sides on both sides and the back side of the scanner unit support 5. A bent piece 35 for holding the front edge of the housing 12 is formed at the front edge of the housing 5. The left and right and rear bent pieces 34 are bent in the vertical direction, while the front bent piece 35 is inclined upward as it goes toward the front, and as shown in FIG. It has a function as a guide for guiding between the lower surface of the support base 5 and the upper surface of the stand 7.

As shown in FIGS. 4 and 5, the reading window 16 is formed of a transparent plate 16a, and the lower surface of the plate 16a is used to set postal information 6a displayed on the front surface of the postal matter 6. A reading frame 36, a center mark 36a for aligning substantially the center of the postal information 6a in the longitudinal direction of the reading frame 36, and a black marker 37 are formed.

FIG. 1 shows the pressing means 11 for pressing the mail 6 against the reading window 16. The specific structure will be described with reference to FIG. The stand 7 is formed in a box shape with an opening on the lower surface by pressing a single metal plate. The pressure contact means 11 includes a bearing 39 which is a guide for guiding a shaft 38 implanted in the center of the lower surface of the stand 7 to be able to move up and down,
A guide frame 40 for guiding the inner surfaces of the four sides of the stand 7 and a push-up mechanism 41 for pushing the stand 7 upward
Are formed.

The lifting mechanism 41 includes a plurality of rollers 42, 43 for supporting the four corners of the inner surface of the stand 7 and a plurality of vertically displaceable rollers for supporting the rollers 42, 43 in a rotatable manner. A support member 44, 45 and a spring 46 as an urging member for urging the roller support members 44, 45 in a direction in which the rollers 42, 43 are displaced upward.
And gears 47 and 48, which are connecting members for connecting the roller supporting members 44 and 45 in an interlockable manner.

One of the roller support members 44 includes a support shaft 44a.
An arm 44b rotatably supported around the support shaft 4;
The arm 44c is rotatable integrally with the gear 47 on the same axis as the shaft 4a, and the connecting shaft 44d connects the arms 44b and 44c. Similarly, the other roller support member 45 includes an arm 45b rotatably supported around a support shaft 45a, an arm 45c rotatable integrally with the gear 48 on the same axis as the support shaft 45a, A connection shaft 45d connecting these arms 45b and 45c is formed. The spring 46 is a specific arm
The roller support member 44 is urged by the spring 46 in a direction in which the roller 42 side is displaced upward about the support shaft 44a.
Since the gears 47 and 48 are meshed with each other, the other roller support member 45 is also urged in a direction in which the roller 43 side is displaced upward about the support shaft 45a.

As described above, the plurality of roller support members 44,
The rollers 45 have the same amount of displacement because they are interlocked.
By supporting the vicinity of the four corners on the lower surface of the stand 7 with 2, 43, the mail 6 can be pressed against the reading window 16 as shown in FIG. ing.

Since the stand 7 on which the mail 6 is placed has a relatively large upper surface, it is difficult to maintain the flatness accuracy of the entire upper surface from the viewpoint of manufacturing, but supports the portion on which the postal information is displayed. By forming the bulging surface 7a as shown in FIG. 7 on the portion, the portion displaying the postal information can be uniformly pressed against the reading frame 36 (see FIG. 4).

As shown in FIG. 2, the scanner unit 3 is detachably supported on a scanner unit support 5 of the main body 2, and the scanner unit 3 rotates about a fulcrum shaft 50 to grip the scanner unit. A handle 51 is provided. In this case, the position of the center of gravity of the scanner unit 3 and the center of the fulcrum shaft 50 are configured to be located on a vertical plane passing through the centers of the two locking projections 30 (see FIG. 1).
That is, the user holds the handle 51 and holds the scanner unit 3.
When the scanner unit 3 is lifted, the scanner unit 3 is kept horizontal, and when the scanner unit 3 is separated from the scanner unit support 5 and the scanner unit 3 is mounted on the support 5, Locking projection 3
It is configured such that the engagement and disengagement between the 0 and the locking hole 31 can be performed smoothly. Note that the scanner unit 3 can be mounted on the main body 2 simply by fitting the locking holes 31 into the locking projections 30, so that a clamping operation can be omitted.

The height at which the stand 7 moves up and down is
1cm corresponding to the maximum allowable thickness of fixed size mail 6
Is set to a value with some margin added to. Therefore, the postal matter 6 having a thickness equal to or less than the allowable height of the stand 7 is lowered.
In the case of (1), as shown in FIGS. 1 and 8, the scanner unit 3 is mounted on the scanner unit
Is read under the reading window 16 by the bent piece 35 of the scanner unit support 5, and the postal information 6 a is read while the reading optical system 14 is moved in this state. The scanner unit 3 separated from the mail 5 reads the postal information on the mail 6 as shown in FIG. This reading will be described later.

Further, as shown in FIG. 2, a display 52 is provided on the upper part of the housing 12 of the scanner unit 3. The postal information reading apparatus 1 according to the present embodiment has not only a function of reading the postal information (bar code) 6a but also a function of checking whether the postal information 6a conforms to the standard. Accordingly, the display 52 displays not only the decoding of the postal information 6a but also the inspection result. Therefore, in addition to the start switch 53 operated at the start of reading, an item switch 54 for switching a failed display item when the inspection has failed, and a detail switch 55 for switching details of the inspection result are provided near the display 52. Are located in

Further, a power supply unit 8 in the main body 2 and a power supply unit (not shown) of the scanner unit 3 are connected by a cable C as shown in FIG. Here, the circuit configuration of the scanner unit 3 will be described with reference to FIG. First, a CPU 56, a ROM 57 in which fixed data such as a program executed by the CPU 56 is written, and a RAM 5 in which variable data such as work data are written in an updatable manner.
8. Image RA for storing read image data
M59 is connected by the bus line 60.

A motor control circuit 6 for controlling the operation of a stepping motor 61 for driving the carriage 13
2. A display control circuit 63 for controlling the operation of the display 52, a start switch 53, an item switch 54, a switch control circuit 64 connected to the detail switch 55, a buzzer control circuit 66 for controlling a buzzer 65 for issuing a warning such as an error. ,
A bus line 60 includes a sensor circuit 68 to which a home position sensor 67 for detecting a state in which the carriage 13 is located at a home position, a reading optical system unit control circuit 69 provided on the substrate 15 for controlling the reading optical system 14, and the like.
Is connected to the CPU 56 via the.

The reading optical system unit control circuit 69 includes a CCD control circuit 70 to which the CCD 22 is connected, a fluorescent lamp control circuit 71 for controlling the operation of the fluorescent lamp 17, and a heater 7
2 and a heater control circuit 74 to which the thermistor 73 is connected
Is connected.

The postal information 6a includes a one-digit start code, a seven-digit postal code, a thirteen-digit address display number,
It is generated by a digit check digit and a one-digit stop code. Since the address display number is not fixed depending on the address, it is defined as follows. That is, if the number exceeds 13 digits, the address display number of up to 13 digits is converted into a customer bar code, and no more than that is included. However, when an alphabetic control code represented by a control code and a numeric code as shown below corresponds to the thirteenth digit, the control code up to the customer bar code corresponding to this control code is included. If the number is less than 13 digits, it is filled with a customer bar code corresponding to the control code “CC4” as shown below until the number becomes 13 digits. The relationship between characters and codes and customer barcodes is as follows.

FIG. 11 is an explanatory diagram showing the relationship among the characters 0 to 9, the customer bar code, and the type of bar. FIG. 12 is an explanatory diagram showing a relationship between a-(hyphen) character, a customer barcode, and a bar type. FIG. 13 is an explanatory diagram showing the relationship among codes of alphabetic control codes (CC1 to CC3), customer barcodes, and bar types. FIG. 14 shows a backup control code (C
It is explanatory drawing which shows the relationship between the code of C4-CC8), a customer bar code, and the type of bar. FIG. 15 is an explanatory diagram showing a relationship among a start code and a stop code, a customer bar code, and a bar type. FIG.
FIG. 4 is an explanatory diagram showing a relationship among alphabetical characters A to J, a customer barcode, and a bar type. This is represented by a combination of the alphabetic control code CC1 and a numeral. FIG. 17 is an explanatory diagram showing the relationship among the alphabetical characters K to T, the customer barcode, and the type of bar. This is represented by a combination of the alphabetic control code CC2 and a numeral. FIG. 18 is an explanatory diagram showing the relationship among English U-Z characters, customer barcodes, and bar types. This is represented by a combination of the alphabetic control code CC3 and a numeral. As shown in FIGS. 11 to 18, the types of customer barcodes are the longest long bar, a semi-long bar slightly shorter than the long bar, and a short timing bar. The semi-long bar is a semi-long bar arranged on the upper side (top). And a semi-long bar (lower) arranged on the lower side, and there are four types classified as 1-4.

The length of the long bar, the length of the timing bar, the pitch of the bar, the width of the bar, and the bar space between adjacent bars are determined at a fixed ratio. An acceptable range is defined.

The inspection items of the postal information (bar code) 6a include a contrast check, a size check, a line width check, a start / stop code check, a character check, a digit number check, and a check digit check.
Inspection standards are defined for each item of check and format check.

The postal information 6a generated by such a customer bar code is displayed on the surface of the postal matter 6, as shown in FIG. The display is performed by attaching a label on which the postal information 6a is printed to the postal matter 6, or by directly printing the postal information 6a on the surface of the postal matter 6. As shown in FIGS. 1 and 8, when reading the postal information 6 a of the mail 6 with the scanner unit 3 mounted on the scanner unit support 5, the mail 6 is bent by the bent piece 35 of the scanner unit support 5. The postal information 6a is read under the reading window 16 while the reading optical system 14 is moved in this state, but the stand 7 is lowered according to the thickness of the postal matter 6, and the postal matter 6 is read by the pressing means 11. Since it is pressed against the window 16, the focal position of the lens 21 of the reading optical system 14 is determined in the reading window 16 (the lower surface of the plate 16 a).
Even if the thickness of the mail 6 changes, the image can be read precisely.

In this case, since the stand 7 is guided so as to be able to move up and down freely and can be lowered by 1 cm or more, a mail 6 having a considerable thickness is inserted between the stand 7 and the reading window 16 and the postal information 6a is transferred. Can be read. Further, the push-up mechanism 41 that pushes up the stand 7 includes a plurality of rollers 42 and 43 that support the vicinity of the four corners of the inner surface of the stand 7 and a plurality of vertically displaceable plural members that share the rollers 42 and 43 and rotatably support them. Roller support members 44, 45,
The spring is formed by a spring 46 for urging the roller supporting members 44 and 45 in the direction in which the rollers 42 and 43 are displaced upward, and gears 47 and 48 for connecting the roller supporting members 44 and 45 in an interlockable manner. Roller support member 44
Is rotated together with the gear 47, the gear 48 rotates together with the other roller supporting member 45. As a result, the displacement amounts of the two roller support members 44 and 45 are made equal, and the rollers 42 and 43 supported by the roller support members 44 and 45 having the same displacement amount support the vicinity of the four corners on the lower surface of the stand 7 to thereby provide the stand. 7 can be improved. Therefore, the postal information 6a can be accurately read by making the postal matter 6 uniformly contact the reading window 16 and positioning the entire display area of the postal information 6a at the focal point. Further, when raising and lowering the stand 7, the roller 4
2 and 43 move in the plane direction of the stand 7, but the rotation of the rollers 42 and 43 supporting the stand 7 causes the stand 7 to move.
Can be smoothly moved up and down.

Although the four corners of the inner surface of the stand 7 are supported by the rollers 42 and 43, the present invention is not limited to this. For example, the inner surface of the stand 7 may be supported at three points.

When reading postal information 6a of a postal item 6 thicker than 1 cm or postal information displayed on a postal item (not shown) such as a parcel, the stand 7 and the reading window 16 are used.
The scanner unit 3 is detached from the main body 2 by grasping the handle 51, and the postal matter 6 is positioned above the postal information 6a such that the reading frame 36 of the reading window 16 is positioned above the postal information 6a. The scanner unit 3 (see FIG. 9) to read the postal information 6a.

In any of the usage modes shown in FIGS. 8 and 9, since the carriage 13 is located at the home position in the direction of the substrate 15 before reading, the postal information is placed below the reading frame 36 (see FIGS. 4 and 5). Whether or not 6a is located can be seen through the clear cover 25. Therefore, even if the position of the postal information 6a with respect to the postal matter 6 is not constant,
By setting the postal information 6a in the reading frame 36, only the postal information 6a can be accurately read out of various information displayed on the postal matter 6. In this case, if the vicinity of the center of the postal information 6a is aligned with the center mark 36a, it is easy to make substantially equal intervals between both ends of the reading frame 36 and both ends of the postal information 6a.
It is possible to prevent a reading error due to a being applied to both ends of the reading frame 36.

Next, control of the reading process of the postal information 6a will be described. First, the processing at the time of the initialization will be described with reference to the flowchart of FIG. Carriage 13
Is usually located at the home position. This state can be recognized by monitoring the detection signal of the home position sensor 67 with the CPU 56. When the start switch 53 is operated, the motor 61 rotates forward, so that the carriage 13 moves toward the reading frame 36. That is, the reading optical system 14
Starts moving (S11). It waits until the HP (home position) sensor 67 is turned off by the movement of the carriage 13 (S12). When the HP sensor 67 is turned off, the number of steps moved until the black marker 37 is detected is counted (S13). Upon recognizing that the reading optical system 14 has detected (read) the black marker 37 (S14).
Yes), the number of steps X up to that point is stored in the RAM 58
(S15). While counting the number of steps (S16), when the carriage 13 moves and detects the reading frame 36 (YES in S17), the steps from the start of the detection of the black marker 37 to the time when the trailing edge of the reading frame 36 is detected. The number A is counted, and A is added to the previously counted step number X (S18), and the added value X + A
Is stored in a predetermined location of the RAM 58 (S19).

As a result, as shown in FIG. 20, the distance from the home position of the carriage 13 to the start of reading of the black marker 37 is X steps, and the carriage 13 reaches the trailing edge of the reading frame 36 from the start of reading of the black marker 37. Is determined as the A step. Further, the distance from the position at which the reading optical system 14 detects the trailing edge of the reading frame 36 to the position at which the reading optical system 14 detects the leading edge is predetermined as B step. These X + A and B are set as fixed values of the individual scanner units 3.

The movement process of the reading optical system 14 when actually reading the postal information 6a is performed by operating the start switch 53 to move the carriage 13 together with the reading optical system 14 from the home position to A + X as shown in the flowchart of FIG. It is moved only by the step (S21). This A + X
Since the steps are data stored in the memory at the time of initializing, the carriage 13 is connected to the reading frame 36 by the reading optical system 14.
Has been moved to the position where the trailing edge of the is read. At this point, the reading of the postal information 6a is started (S2
2) At this point, the reading is completed when the carriage 13 has further moved by the number of B steps (S23). Although the subsequent processing is not shown in FIG.
To the process of returning to the home position. Such processing is the same in any of the usage modes shown in FIGS. 8 and 9 described above.

The result of reading the postal information 6a can be called up and displayed on the display 52. When the inspection mode is set by an operation unit (not shown), as a result of reading the postal information 6a, an inspection result indicating whether or not the information conforms to the standard is displayed on the display 52. In case of rejection, an indication to that effect is displayed. In this case, item switch 5
By pressing 4, the failed items can be switched. If the number of failed items is one, the buzzer 65 sounds when the item switch 54 is pressed. Further, when it is determined that the test is rejected, the details of the inspection result can be switched by pressing the details switch 55, but if there is no details, pressing the details switch 55 causes the buzzer 65 to sound. The inspection process is performed by the CPU 56 executing an inspection program written in the ROM 57.

[0042]

According to the first aspect of the present invention, there is provided a reading window for pressing a surface on which postal information of a postal matter is displayed, and a photoelectric conversion element in which a large number of light receiving elements are arranged one-dimensionally. A reading optical system for optically reading the postal information by moving the postal information, and a pressing means for pressing the postal matter on the lower surface of the reading window. The postal information is placed on the upper surface of the stand and the reading optical system is moved, so that the postal information is obtained by scanning in the main scanning direction and the sub-scanning direction by the reading optical system. Can be read. In addition, since the surface of the postal matter having a different thickness can be pressed against the reading window by the pressing means, the thickness of the postal mail changes by adjusting the focal position of the reading optical system to the lower surface of the reading window. However, postal information can be accurately read at the focal point.

According to a second aspect of the present invention, in the first aspect of the present invention, the press contact means is formed by a guide for guiding the stand up and down and a push-up mechanism for pushing the stand upward. The postal information can be read by inserting a mail having a considerable thickness between the stand and the reading window.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the push-up mechanism includes a plurality of rollers for supporting the inner surface of the stand, and a vertical direction for supporting these rollers in a rotatable manner. A plurality of displaceable roller supporting members, an urging member for urging the roller supporting members in a direction in which the rollers are displaced upward, and a connecting member for connecting the roller supporting members in an interlocking manner are formed. So
Since the plurality of roller support members are linked, the displacement amount is equal,
By supporting the lower surface of the stand with a plurality of rollers supported by a roller supporting member having the same displacement amount, the horizontality of the stand can be increased, and the postal information can be maintained in a horizontal state over the entire area. Can be further improved. Further, when the stand is moved up and down, the rollers move in the plane direction of the stand. The rotation of the rollers supporting the stand makes it possible to smoothly move the stand up and down.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, the reading window is provided with a reading frame for designating the position of the postal information. Even if the position of is not fixed, by setting the postal information in the reading frame, only the postal information can be accurately read out of the various information displayed on the postal matter.

[Brief description of the drawings]

FIG. 1 is a vertical sectional left side view of a postal information reading apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a separation structure between a power supply unit and a scanner unit.

FIG. 3 is a perspective view illustrating a bottom surface of the scanner unit.

FIG. 4 is a perspective view of a reading window viewed from below.

FIG. 5 is a side view showing a relationship between postal information and a reading frame.

FIG. 6 is a perspective view showing the structure of the pressure contact means.

FIG. 7 is a longitudinal left side view showing a modification of the stand.

FIG. 8 is a perspective view showing a usage pattern for reading postal information of a thin postal matter.

FIG. 9 is a perspective view showing a use mode for reading postal information of a thick postal matter.

FIG. 10 is an electrical block diagram of the scanner unit.

FIG. 11 is an explanatory diagram showing a relationship among characters 0 to 9, customer barcodes, and bar types.

FIG. 12 is an explanatory diagram showing a relationship between a character (-), a customer barcode, and a bar type.

FIG. 13 is an explanatory diagram showing a relationship among codes of alphabetic control codes, customer bar codes, and bar types.

FIG. 14 is an explanatory diagram showing a relationship among a spare control code, a customer bar code, and a bar type.

FIG. 15 is an explanatory diagram showing a relationship among a start code and a stop code, a customer bar code, and a bar type.

FIG. 16 is an explanatory diagram showing a relationship among letters A to J, customer barcodes, and bar types.

FIG. 17 is an explanatory diagram showing a relationship among alphabetic characters K to T, a customer barcode, and a bar type.

FIG. 18 is an explanatory diagram showing a relationship among U-Z characters of an alphabetic character, a customer bar code, and a bar type.

FIG. 19 is a flowchart showing a process at the time of initial.

FIG. 20 is an explanatory diagram showing the relationship between the moving distance of the reading optical system and the number of steps.

FIG. 21 is a flowchart illustrating a moving process of a reading optical system when reading postal information.

[Explanation of symbols]

 6 Mail 6a Postal information 7 Stand 11 Pressing means 14 Reading optical system 16 Reading window 22 Photoelectric conversion element 36 Reading frame 39, 40 Guide 41 Push-up mechanism 42, 43 Roller 44, 45 Roller support member 46 Urging member 47, 48 Connection Element

Claims (4)

[Claims] 1. A reading window for pressing a surface on which postal information of a postal matter is displayed, and an original photoelectric conversion element in which a large number of light receiving elements are arranged one-dimensionally, and are moved along the upper surface of the reading window. A postal optical system that optically reads the postal information, and a stand that has a pressing unit that presses the postal matter on the lower surface of the reading window, and a stand that is disposed to face the reading window and mounts the postal matter. Information reading device. 2. The postal information reading apparatus according to claim 1, wherein the press contact means is formed by a guide for guiding the stand up and down and a push-up mechanism for pushing up the stand upward. 3. A push-up mechanism comprising: a plurality of rollers for supporting an inner surface of a stand; a plurality of vertically displaceable roller support members for supporting these rollers in a rotatable manner;
3. The postal information image reading apparatus according to claim 2, wherein the postal information image reading device is formed by an urging member that urges the roller supporting member in a direction in which the roller is displaced upward, and a connecting member that operatively connects the roller supporting member. . 4. The postal information reading device according to claim 1, wherein the reading window is provided with a reading frame for specifying a position of postal information.