JPH10138461A - Printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform printing surely by removing fats adhering to the printing face of a matter to be printed. SOLUTION: Defatting liquid is jetted from a defatting liquid jet port 7b made in a casing 3 covering a part of a printing matter carry line 1 in order to dissolve fats on the printing face. The fats are then blown off from the printing face by jetting the air from an air jet port 8a and the atmosphere in the casing 3 is discharged through an exhaust duct 4a. Printing is then performed on a defatted print face by means of a print head 9b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for performing reliable printing on a printing surface of an object to be printed.

[0002]

2. Description of the Related Art In recent years, most foods have been manufactured in large quantities in factories and the like, filled in individual containers, and printed with expiration dates (ink-jet recording, thermal transfer recording, stamping, labeling, etc.). Often shipped to the market. Some of them contain a large amount of edible oil, such as fried and fried, and this edible oil adheres to the printing surface during the filling or packaging process of food, or the inside of a film that wraps food. When edible oil seeps out of the printing surface and prints a display such as the expiration date, the edible oil often causes ink (label) not to be printed on the printing surface.
In addition, even if the rider rides on the vehicle, the ink has a weak adhesive force, and the ink is removed during packing, transportation, or at the store while the purchaser is touching the product, and there is a problem that the display such as the expiration date cannot be read. . Other than foods, there is a similar problem when fats and oils are attached to the printed surface.

[0003] As a solution to this, it is only necessary to wipe off the grease by wiping the printed surface with alcohol or the like.
In mass production, manual work cannot be used.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a printing apparatus capable of reliably performing printing (ink adhesion or label sticking) even on a printing surface to which fats and oils have adhered.

Another object of the present invention is to provide a printing apparatus which can achieve the above object without polluting the working environment.

It is still another object of the present invention to provide a printing apparatus which can be easily applied to various production lines to achieve the above object.

[0007]

One feature of the present invention is that:
In a printing apparatus provided with a printing means for printing on a printing object, a means for degreasing the printing surface of the printing object before printing is provided, and by removing fats and oils from the printing surface, a strong ink adhesion or label is provided. That is, an adhesive force can be obtained. Specifically, the degreasing means includes a degreasing liquid jetting means for jetting a degreasing liquid toward a printing surface and spraying the degreasing liquid on the printing surface, and a degreasing solution removing device for removing the degreasing solution degreasing the printing surface from the printing surface. Means are provided, and air blowing means for blowing air onto the printing surface to blow off the degreasing solution remaining on the printing surface is provided as the degreasing solution removing means. In addition, it is desirable to use an ink jet print head as a printing means and to perform printing on the degreased print surface by ink jet recording. In this case, in place of the degreasing solution jetting means and the degreasing liquid removing means, a volatilizing means for irradiating the printing surface of the printing object with ultraviolet rays to volatilize the oils and fats attached to the printing surface can be used.

Another feature of the present invention is that a printing section by the printing means, a degreasing liquid spraying section by the degreasing liquid jetting means and a degreasing liquid removing section by the degreasing liquid removing means, or a printing section by the printing means and a volatilizing means. By providing a casing for covering the volatile portion and an exhaust means for exhausting the atmosphere inside the casing, it is possible to exhaust the atmosphere containing degreased oils and fats, thereby preventing contamination of the printing work environment.

Still another feature of the present invention is that each means in the casing including the casing and the exhaust means are unitized so that they can be easily applied to various production lines.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals.

<First Embodiment> FIG. 1 is a plan view showing a first embodiment of a printing apparatus according to the present invention. This printing apparatus performs printing by inkjet recording. FIG.
In the above, a printing medium transport line 1, which is a part of a production line such as an existing belt conveyor, mounts and transports a printing object 2. The casing 3 is provided with a printing object transport line 1.
Is provided so as to cover an intermediate portion of the printing medium, and allows the printing medium 2 to be continuously conveyed and passed through the printing medium conveyance line 1 and the oil and fat removed from the printing surface of the printing medium 2 The configuration is such that diffusion can be suppressed. One end of an exhaust duct 4a is connected to and opened at the upper part of the casing 3, and the other end of the exhaust duct 4a is connected to an exhaust fan device 5 provided outside the casing 3. The exhaust fan device 5 exhausts an atmosphere containing oil and fat sucked from the inside of the casing 3 through the exhaust duct 4a to the outside of the building through the exhaust duct 4b.

A printing object detection sensor 6 is provided inside the casing 3 on the printing object loading side, and a printing object transport line 1 is provided.
To detect that the printing object 2 conveyed by the printer 1 arrives in the casing 3. The degreasing liquid control device 7a, the air blow control device 8a, the ink jet printer main body 9a, and the exhaust fan device 5 execute respective operations based on a detection signal from the print object detection sensor 6.

The degreasing liquid control device 7a includes a degreasing liquid jet port 7b.
The degreasing liquid is sprayed onto the printing surface of the printing object 2 to dissolve the oil and fat adhering to the printing surface. Further, the air blow control device 8 a
The air blown from b is controlled, and air is blown on the printing surface to blow off the degreasing liquid and oil and fat remaining on the printing surface. Further, the ink jet printer main body 9a controls ejection of ink droplets from the print head 9b, and performs printing by attaching ink droplets to the printing surface.

The printing apparatus configured as described above receives the printing object 2 conveyed on the printing object conveying line 1 into the casing 3. Therefore, first, the print object detection sensor 6 detects the arrival of the print object 2, and the degreasing liquid control device 7
a, a detection signal is sent to each of the air blow control device 8a, the ink jet printer main body 9a, and the exhaust fan device 5.

The degreasing liquid control device 7a ejects the degreasing liquid from the degreasing liquid jet port 7b when the printing surface of the printing object 2 is conveyed to the position facing the degreasing liquid jet port 7b, and Control is executed to dissolve and float the oils and fats attached to the printing surface of the object 2.

The air blow control device 8a blows air from the air outlet 8b when the printing object 2 is being conveyed to the position facing the air outlet 8b, and the oil and fat floated by the degreasing liquid and the degreasing The control is performed to blow off the liquid from the printing surface of the printing object 2 to remove oils and fats. The fat and oil and the degreasing liquid blown off from the printing surface by the blown air float in the casing 3 as mist or gas.

The exhaust fan device 5 sucks and discharges the atmosphere in the casing 3 to remove the grease and the grease floating in the atmosphere from the inside of the casing 3 and perform a degreasing treatment on the printed matter. 2 is prevented from re-adhering to the printing surface. The exhaust fan device 5 has a control sequence in which an exhaust operation is started immediately after the air is blown out from the air outlet 8b, or the exhaust fan device 5 always performs an exhaust operation during the operation of the production line regardless of the air blowing timing. Such a control sequence can be set.

The ink jet printer main body 9a ejects ink droplets from the print head 9b when the print surface of the print object 2 is being conveyed at a position facing the print head 9b, and prints predetermined characters on the print object 2. Form on the printing surface.

<Second Embodiment> FIG. 2 is a side view showing a printing apparatus according to a second embodiment of the present invention. In this embodiment, a printing medium transport line 10 such as a dedicated belt conveyor having a length necessary for printing is used separately from the printing medium transport line 1 which is a part of an existing manufacturing line. It is an example. A degreasing liquid control device 7a, a degreasing liquid jet port 7b connected to the degreasing liquid control device 7a, an air blow control device 8a, an air jet port 8b connected to the air blow control device 8a, an ink jet printer main body 9a,
The print head 9b connected to the ink jet printer main body 9a is integrated into the casing 3 to form a unit. Then, it moves integrally with the casing 3 so that it can be used on different transport lines.

The exhaust duct 4b connected to the upper part of the casing 3 can be connected to an existing exhaust device (not shown). By allowing the existing exhaust system to be used as it is,
The miniaturization and simplification of the printing device are facilitated.

<Other Embodiments> In the embodiments described above, printing is performed by ink jet recording, but printing may be performed by thermal transfer recording, stamping, label sticking, or the like.

The volatilizing device for irradiating the printing surface before printing with ultraviolet rays to volatilize oils and fats adhering to the printing surface without using a degreasing solution is provided by the degreasing solution control device 7a and the air blow control device. 8a can be used instead. These selections can be configured so as to be appropriately selected according to, for example, the properties of the printing object.

[0023]

As described above, according to the present invention, from the degreasing of the surface of the printing object to the printing can be automatically performed, the surface of the printing object to which a large amount of oil or fat adheres can be obtained. The printing can be performed reliably. In particular, in the case of printing by ink jet recording, the effect is large.

Further, since the degreasing liquid is evacuated and removed from the casing, the working environment is not contaminated.

Further, by forming a unit, not only the use on the transport line which is a part of the existing production line but also the use of a dedicated transport line having a length necessary for printing to configure the printing apparatus. It is also possible to appropriately configure the apparatus according to the product or the line.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a printing apparatus according to the present invention.

FIG. 2 is a side view showing a second embodiment of the printing apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed object conveyance line 2 Printed object 3 Casing 4a, 4b Exhaust duct 5 Exhaust fan device 6 Printed object detection sensor 7a Degreasing liquid control device 7b Degreasing liquid jetting port 8a Air blow control device 8b Air jetting port 9a Inkjet printer main body 9b Print head 10 Conveyance line for printed material

Claims (5)

[Claims] 1. A printing apparatus having printing means for printing on an object to be printed, comprising: a degreasing liquid jetting means for jetting a degreasing liquid toward a printing surface and spraying the degreasing liquid on the printing surface; A degreasing solution removing means for removing from a printing surface; a printing part by the printing means; a degreasing liquid spraying part by a degreasing liquid jetting means; and a casing for covering the degreasing liquid removing part by the degreasing liquid removing means, and an atmosphere inside the casing is exhausted. And an exhaust means for performing a degreasing process on a printing surface of the printing object before printing. 2. The printing apparatus according to claim 1, wherein said degreasing liquid removing means includes air blowing means for blowing air on said printing surface to blow off the degreasing liquid remaining on said printing surface. . 3. A printing apparatus having a printing means for printing on an object to be printed, a volatilizing means for irradiating a printing surface of the object with ultraviolet rays before printing to volatilize oils and fats attached to the printing surface. And a casing that covers a printing unit by the printing unit and a volatilization unit by the volatilization unit; and an exhaust unit that exhausts an atmosphere inside the casing containing the evaporated oils and fats. A printing device characterized in that the printing surface is degreased. 4. The printing apparatus according to claim 1, wherein each unit in the casing including the casing and the exhaust unit are unitized. 5. The exhaust means comprises an exhaust fan device provided outside the casing, and a duct connecting the exhaust fan device and the casing. 5. The printing device according to any one of claims 4 and 4.