JPH03271879A - Recording strip reader - Google Patents

Abstract

PURPOSE:To facilitate the read work by providing a head, which is provided with a reading means, with a long-sized main body which is freely turned and can be moved forward and backward. CONSTITUTION:The lower part of a main body 2 formed to a long-sized cylinder is pressed on the face of a recording strip 1 to closely bring the front end of a head 3 into contact with the face of the recording strip 1. Even if there is a gap between a part of the head 3 and the face of the recording strip 1, the main body 2 is pressed on the face of the recording strip 1 to forcibly turn the head 3 till the head 3 is uniformly and closely brought into contact with the recording face, and the head 3 is easily closely brought into contact with the face of the recording strip 1. Consequently, the close contact state between the front end face of the head 3 and the recording face is confirmed by the stop of the turning operation of the head 3. Thus, a worker is prevented from forcibly taking an unnatural attitude or the like at the time of read.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a record sheet on which coded information is recorded, which can be read and recognized by physical means, for example, optically or magnetically. The present invention relates to a vote reading device.

[Conventional technology]

Conventionally, for example, boxes in which various goods and items for delivery are packed have stored various information about those goods in order to streamline and save labor in various operations such as sales calculations, inventory management, and sorting operations. Bar code labels, which are encoded and recorded as bars of various widths, are affixed to packaging boxes and are widely used. Various types of hand-held barcode readers, for example, have been developed as devices for reading barcode labels. That is, as shown in FIG. 11, this type of barcode league emits reading light from a light source 101 provided at the tip of a housing 100, which is usually formed in a street shape, and reads the barcode label. 102 is formed into an image on an image sensor 104 by an imaging lens 103, thereby reading a bar code.

[Problem to be solved]

By the way, in this type of barcode labeler, the main body of the housing is held by hand, and the reading window at the tip of the housing is moved along the surface of the barcode label while being placed in close contact with the surface. This allows reading scanning to be performed, but if you are not accustomed to scanning, a part of the tip may not come into close contact with the label surface when the housing is moved. the result,
When the optical distance from the light source to the image sensor increases, there is a large possibility that the barcode written on the barcode label will not be correctly imaged on the image sensor, resulting in poor reading.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the conventional technology, it is an object of the present invention to provide a record reading device that allows anyone to easily perform the reading operation and is less likely to cause reading errors. be.

[Means to solve the problem]

That is, the invention according to claim 1 is a record slip reading device that reads a record slip on which encoded information is recorded and detects δ, and includes a head provided with a reading means, and a record slip with respect to the head. It has a long main body that is rotatable and can move forward and backward.

The invention according to claim 2 further provides a printed circuit board on which an electric component constituting a circuit for inputting a signal output from a reading means and performing predetermined signal processing is mounted inside the main body, and the electric component and the main body. The device is equipped with magnetic shielding means for preventing magnetic interference from occurring with the outside.

[Effect]

The record reading device according to claim 1 of the present invention can bring the tip of the head into close contact with the record slip surface by pressing the lower part of the main body toward the record slip surface. In addition, even if there is a gap between a part of the head and the surface of the recording slip, by pressing the main body toward the recording surface, the head can be pressed until the head is in even and close contact with the recording surface. The head is forcibly rotated, which allows the head to be brought into close contact with the recording surface easily, and by stopping the rotation of the previous head, the leading end surface of that head is brought into close contact with the recording surface. You can easily do S-ninja.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a record slip reading device according to the present invention, which magnetically records information and magnetically reads and recognizes an engraved record slip 1. , a main body 2, and a head 3.

Note that this engraving record slip 1 is the same as the engraving record slip invented by this inventor and filed on the same date by the present applicant, that is, a predetermined width according to the information to be recorded. It has a recording section consisting of uneven grooves carved on a magnetic substrate with a predetermined distance between adjacent ones, and is used to record a specific article, for example, a concave section 4a of an electric device 4 used outdoors. It is fixed to etc.

The main body 2 is formed into an elongated cylindrical shape, and includes a printed circuit board 5 on which electrical components (flash relays) constituting a circuit that performs predetermined signal processing are mounted, and a connection between this electrical component and the outside of the main body 2. It is equipped with a magnetic shielding means 6 for preventing magnetic interference from occurring between the two, and is connected via a cable 7 to a decoding section (flash fault) outside the main body. The printed circuit board 5 includes a signal processing circuit having a circuit configuration shown in FIG.
It is composed of an amplifier circuit 8, a differentiation circuit 9, a comparison circuit 10, and a polarity inversion circuit 11. The amplifier circuit 8 is for amplifying an electrical signal caused by a resistance change caused by an MR element, which will be explained later. In this embodiment, it has a configuration using two stages of amplifiers using linear ICs, and the input side is an MR element.
It is connected to a bridge circuit provided with the element, and its output side is connected to the input side of the differentiating circuit 9. i-minute circuit 9
performs predetermined waveform processing on the electric signal amplified by the amplifier circuit 8 to identify the width of the recording part of the stamp record slip 1, and the input side is connected to the output side of the amplifier circuit 8. The output side is connected to the input end of the comparator circuit 10. The comparison circuit 10 is for converting an analog signal of a predetermined waveform formed by the differentiating circuit 9 and having a wavelength corresponding to the width of the recording section into a digital signal such as a rectangular wave, and in this embodiment, a linear IC is used. A comparator is used, the input side of which is connected to the output side of the differentiating circuit 9, and the output side connected to the input side of the polarity inversion circuit 1-1. The polarity inversion circuit 11 returns the phase of the output waveform that was inverted by 90 degrees during the waveform processing in the differentiating circuit 9 to its original state, that is, to the state in which it matches the unevenness of the recording part of the stamped record slip. It has a configuration using two stages of transistors, and the input side is connected to the output side of the comparator circuit 10, and the output side is connected to the input side of a decoding circuit (circuit) outside the main body 2. The elongated printed circuit board 5 on which the various electrical components constituting these circuits are mounted is placed in the groove 21a on the upper surface of the holding member 21, which is provided upright on the floor of the housing 2a, as shown in FIG. The lower end portions are fitted with each other, and the upper end portions are fitted into the grooves of the holding member 23 pressed by the elastic force of the spring 22, as shown in FIG. Note that these circuits may be configured by combining individual ICs, resistors, capacitors, and other elements and disposed on the printed circuit board 5, or they may be combined into a hybrid I.
A C or monolithic IC may be mounted on a printed circuit board.

The head 3 is attached to the main body 2 in such a manner that it can swing freely and move forward and backward, and as shown in FIG.
It is composed of a base 14 attached to the lower surface of the housing 2a via a rotating movement mechanism 13, and a reading means 15 provided on the base 14.

The rotating forward/backward mechanism 13 is for smoothly and easily reading and scanning the engraved record slip 1, and allows the head 3 to freely rotate relative to the housing 2a of the main body 2. It is possible to move up and down.

Therefore, as shown in FIG. 5, the rotating forward/backward mechanism 13 of this embodiment includes a connecting member 16 having a long hole 6a and fixed to the lower surface of the housing 2a, and a connecting member 16 that penetrates through the long hole 16a of the connecting member 16. A bracket 18 that supports the rotating shaft 17 and is erected on the base 14, and a spring 20 that urges an elastic force through the pusher 19 toward the rotating shaft 17 in the elongated hole 16a.
(see Figure 5).

Note that although the rotation shaft 17 in this embodiment is biased with elastic force by a coil-shaped spring 20, it is not limited to this in particular; for example, as shown in FIG. A plurality of leaf springs 24 may be used. The reading means 15 uses an MR sensor (magnetoresistive element), and in this embodiment, a bridge circuit is formed by combining the MR sensor (magnetoresistive element) and a predetermined resistor. The output section of this bridge is connected to the input side 8 of the amplifier circuit provided on the printed circuit board 5 by a wiring cord 25 inserted through a hole 2b opened in the bottom surface of the housing 2a. In addition, this MR (Magnetic Re5i
A stance (stance) sensor is configured such that its internal resistance changes depending on the magnitude of an external magnetic field, and uses a silicon compound semiconductor, a ferromagnetic thin film (metal), or the like.

Next, the operation of each circuit of this embodiment will be explained.

When the record slip reading device of this embodiment is used to scan the engraved record slip 1 having the shape (thickness) as shown in FIG. A signal with a waveform having an extreme value at the boundary between each concave and convex portion is output as shown in FIG.

Next, when the signal output from this bridge circuit is amplified by an amplifier circuit 8 and then inputted to a differentiating circuit 9, the differentiating circuit 9 produces a signal that is out of phase with respect to the output waveform from the bridge circuit, as shown in FIG. , a signal with a waveform corresponding to the unevenness of chart 1 just described is output.

In this way, the comparator circuit 10 which receives this signal outputs a coded digital signal that matches the shape of the grooves on the recording form 1, as shown in FIG.

Therefore, according to this embodiment, even if the engraved record slip 1 is fixed in a narrow recess 4a as shown in FIG.
can be reliably read and scanned.

In this embodiment, a magnetic means was used as the reading means to read the engraved record slip in which information was recorded magnetically, but the reading means is not limited to this. It is also possible to use optical means to read conventional bar code labels printed with thin bars.

〔effect〕

As explained above, according to the record reading device according to claim 1 of the present invention, the main body and the head are rotatable, and the worker is forced to take an awkward posture when reading. In addition, simply by pressing the main body with a predetermined force, the head is pushed out onto the record sheet surface and firmly adheres to the record sheet surface, which prevents reading errors and is highly reliable. things can be provided.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a record reading device according to the present invention;
FIG. 2 is a block diagram showing the configuration of a circuit provided in the record reading device according to the present invention, and FIG. 3 is an I-I diagram in FIG.
4 is an enlarged sectional view of the principal part of the head according to the present invention; FIG. 5 is a sectional view showing the connection between the main body and the head; and FIG. 6 is a cross-sectional view of the connection between the main body and the head. FIG. 7 is a sectional view showing a modified example, and FIGS. 8 to 10 are graphs showing the relationship between the scanning time and the groove position of the record slip when the record slip is read by the record slip reading device according to the present invention. 11 is a waveform diagram showing the time course of the signals output from the bridge circuit, the differentiation circuit, and the comparison circuit when reading the record slip by the record slip reading device according to the present invention, and FIG. FIG. DESCRIPTION OF SYMBOLS 1...Record slip, 3...Head, 2...Main body, 5...Printed circuit board, 6...Magnetic shielding means.

Claims (1)

[Scope of Claims] 1. A record slip reading device for reading and recognizing record slips on which coded information is recorded, comprising: a head provided with a reading means; a head rotatable with respect to the head; 1. A record slip reading device comprising: a long main body attached to be movable forwards and backwards; 2. A printed circuit board mounted inside the main body with electrical components constituting a circuit that inputs the signal output from the reading means and performs predetermined signal processing, and magnetic interference between the electrical components and the outside of the main body. What is claimed is: 1. A record slip reading device comprising: magnetic shielding means for preventing the occurrence of .