JPS59143662A - Bar code printer - Google Patents

Abstract

PURPOSE:To easily record various widths of bar codes by a simple mechanism in which magnetic latent images formed in a magnetic recorder by a magnetic head are partly erased in terms of their width by a selective operation and the magnetic latent images visualized by a color magnetic ink are fixed as such to a magnetic recorder or transferred to a transfer medium and fixed. CONSTITUTION:A magnetic recorder 1 is wholly demagnetized by a magnet 2. A bar code pattern signal is given to a magnetic head 3, and the neccedary portion of the magnetic recorder 1 is magnetized to form a magnetic latent image. In case where the necessary image width of bar code to be obtained is maximum, a magnetic latent image in the necessary maximum width is formed by the magnetic head 3, and therefore, the magnetic head 4 is retracted to the outside of the magnetic latent image region. The magnetic latent image is thus developed as such and visualized by a color magnetic ink in the development section 5 without influence of the magnetic head 4. On the other hand, in case where the necessary image width of bar code is smaller than maximum, the magnetic head 4 is advanced in a necessary amount into the magnetic latent image region by a drive mean.

Description

[Detailed description of the invention] Technical field The present invention relates to a barcode printer.

BACKGROUND ART Conventionally, there are various types of barcode printers, such as a thermal transfer method, an electric transfer method, an inkjet method, an electrophotographic method, and an electrostatic recording method.

Here, the barcode has a length l as shown in Figure 1.
A characteristic feature is that various bar widths, widths W, and bar thicknesses and intervals are required. Therefore, a barcode printer must be able to cope with this characteristic, but none of the conventional printers can be said to be sufficient and have a complicated mechanism. In other words, conventionally, in consideration of high-speed recording, thermal heads, energized phase stylus electrodes, ink nozzles,
, BD cable, etc., which require multiple image signal input means, or a complicated optical system such as a laser.

Another feature of barcodes is that the same pattern is often recorded multiple times. However, all of the conventional methods require repeating the entire image forming process for each barcode even when recording barcodes with the same pattern, and cannot be called efficient.

Purpose The present invention has been made in view of the above points, and is capable of easily recording barcodes of various widths using a simple mechanism, and furthermore, can efficiently record barcodes of the same pattern. The aim is to obtain a barcode printer that can.

Structure An embodiment of the present invention will be described based on FIGS. 2 and 3. First, a magnetic recording body (1) formed in a cylindrical shape and rotating in the direction of the arrow is provided. This magnetic recording body (1
) is r-Fe203, cro2. Ba-7N
Fine particles such as light dispersed in resin, Co-N1
-P.

Commonly used magnetic materials such as plated films, vapor deposited films, and sputtered films such as Co-P, Co-Ni, and Co-Ni-Fe can be used. Then, this magnetic recording medium (
1) A magnet that demagnetizes the entire surface (2) (a magnetic head may also be used)
is provided. A magnetic head (3) is provided at the subsequent stage. The recording width of this magnetic head (3), that is, its length, has a recording line width that matches the required maximum image width, for example, +l@yM*x of the bar code shown in the top row of FIG. , is perpendicular to the rotation direction (see arrow A in FIG. 3) of the magnetic recording body (1).

Hereinafter, a magnetic head (4) serving as an erasing means, a developing section (5), a transfer roller (6), and a cleaning section (sword) are provided on the outer periphery of the magnetic recording body (1) according to its rotation direction. A recording paper (8) serving as a transfer body is fed and conveyed between a magnetic recording body (1) and a transfer roller (6) by a conveyance roller (9), and a fixing roller (10) is provided at the rear stage. Here, the magnetic head (4) is selectively operated by moving forward and backward over the magnetic recording medium (1) as shown by the arrowhead in FIG. 3 by a driving means (not shown). The one advance/retreat 'M is appropriately controlled according to the width 111 information of the barcode pattern signal.

In such a configuration, the entire magnetic recording body (1) is demagnetized by the magnet (2). Then, a barcode pattern signal is applied to the magnetic head 3), and a necessary portion of the magnetic recording medium (1) is magnetized to form a magnetic latent image.

The dotted line in Figure 3 indicates the magnetic image circle for the purpose of explanation.
Understand the recording direction of barcodes.

Here, the thickness of the bar of the barcode is determined by the time for which the magnetic head (3) is energized.

Now, assuming that the safest image width of the barcode to be obtained is the maximum, the magnetic head (3) forms a magnetic latent image in this safest maximum width, so the magnetic head (4) The object is evacuated outside the image area. Therefore, the magnetic latent image is transferred to the developing section (5) without being affected by the magnetic head (4).
It was colored as it is with 41B ink at j=
f is visualized. Here, the colored magnetic ink may be either powder or liquid, and generally it is made by kneading magnetic powder or colorant into a resin to form a powder, or by dispersing fine magnetic powder in a solvent in the form of a colloid. used. This visible image is transferred from the magnetic recording medium (1) to the recording paper (8) by the transfer roller (6).
and fixed by the fixing roller (10) (if the magnetic ink is a liquid, fixing is not necessarily necessary).

Note that the visible image may be fixed directly on the magnetic recording medium (1). After that, the magnetic recording body (1) is moved to the cleaning section (
The residual ink is removed by step 7) and demagnetized again by the magnet (2) in preparation for the next recording.

On the other hand, consider the case where the required image of the barcode to be read is smaller than the maximum width, as shown in the lower part of FIG. In this case, the magnetic head (3) is first opened in the same manner as described above.
The widest magnetic latent image is formed by this. As a result, the magnetic head (4) is moved into the magnetic layer image area by a certain amount by a driving means (not shown) as shown in FIG. As a result, the magnetic head (4) magnetizes the unnecessary portion of the magnetic latent image α1) formed by the magnetic head (3) by 7F! 4
As shown in FIG. 3, a magnetic latent image of the required width remains, and a bar code of the required width is obtained.

Furthermore, consider the case of recording the same pattern of barcodes several times in succession. In this case, as described above, the magnet (2) must be separated from the magnetic recording medium (1) just before the operation of the first sheet is completed, and only the development, transfer, cleaning, and bonding steps are necessary. Just repeat it a number of times. In other words, (a) The air groove 1 image is characterized by being stored stably for a long time, and since this magnetic latent image is not demagnetized by the magnet (2), the process using the magnetic head (3) is unnecessary, making it efficient. At this time, imqi head (3) (4
) does not cast a shadow on the magnetic image held on the magnetic recording body (1) as long as no signal is input, so it may be left at that position, but the magnetic recording body (1) In order to reduce the wear caused by friction with the
Even if you try to separate them, it will be too small.

Therefore, according to this embodiment, since the magnetic head (3) is used, scanning in the length direction of the barcode is -
Magnetic Ko 1! 4 by scanning twice! can record,
At this time, if a narrow barcode is to be recorded, its width can be easily controlled by the magnetic head (4), and the length direction of the barcode is the input signal to the magnetic head (3). Since it can be easily controlled, barcodes of various sizes can be recorded extremely simply and at high speed. Furthermore, continuous recording of a plurality of barcodes with the same pattern eliminates the need for inputting the magnetic head (3), which is efficient.

Furthermore, the erasing means may be a permanent magnet instead of the magnetic head (4).

Effects Since the present invention is configured as described above, it is possible to easily record barcodes of each size of yuzu at high speed with an extremely simple mechanism, and furthermore, barcodes of the same pattern can be recorded. , by taking advantage of the characteristics of the magnetic latent image, it is possible to make efficient recording by eliminating the need for the magnetic m1 forming step.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing barcodes of various sizes, FIG. 2 is a schematic side view showing an embodiment of the present invention, and FIG. 3 is an explanatory diagram showing its gist. 1 magnetic recording body, 3 magnetic head, 4 magnetic head, (
(erasing means), 5... developing section, 6, transfer roller, 8
Recording paper (transferred material), 10...Fixing roller, 11 Magnetic latent 1&

Claims (1)

[Claims] A magnetic recording medium, a magnetic head having a recording width at least equal to or greater than the required maximum image width and forming a magnetic latent image on the magnetic recording medium in response to a barcode pattern signal; An erasing means for erasing a part of the magnetic latent image so that the width of the magnetic field 611 is the required width, a means for making this magnetic latent image visible with colored magnetic ink, and a means for making this visible image visible on a magnetic recording medium as it is. 1. A barcode printer comprising means for transferring and fixing a barcode onto an object to be transferred.