JPH0737153B2 - Explosion proof printer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a printer having an explosion-proof structure, which is provided in, for example, a gasoline filling station for filling an automobile or the like.

[Conventional technology]

Since such a gasoline filling station handles gasoline, which is a highly flammable dangerous material, a certain area around the gasoline filling machine installed here is set as a dangerous area, and electrical equipment installed in this area is This has an explosion-proof structure so that the electric sparks, etc. of will not ignite gasoline or gasoline vapor.

By the way, as one of the electric devices, there is a printer that prints refueling data such as refueling amount of gasoline and refueling amount for each refueling and issues it as a slip to refueling customers. This printer may be installed near the refueling machine. is there.

In this case, in the conventional printer, as an example, the printing mechanism and the printing paper are both housed in a case, a slit is provided in the case, and a slip on which refueling data and the like are printed is derived from the slit.

For this reason, the inside and outside of the case communicate with each other at the slit portion, and the explosion-proof structure cannot be a pressure-proof explosion-proof structure that completely seals the case, so that the case internal pressure is increased by constantly supplying clean air to the case, A so-called internal pressure explosion-proof structure was used to prevent combustible vapors from entering the case.

[Problems to be solved by the invention]

In such an internal pressure explosion-proof structure, since the slit for leading out the slip is formed, the air in the case is released from this slit portion, and it is necessary to always supply a large amount of air to increase the internal pressure of the case. However, an air compressor or the like requires a large capacity, resulting in high manufacturing cost and running cost.

An object of the present invention is to eliminate the disadvantages of the conventional example, and to provide an explosion-proof printer, which can be an inexpensive explosion-proof sealed case as a structure of the explosion-proof printer and which can perform safe and clear printing. .

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides a laser transmitter in a pressure-proof explosion-proof case, attaches an energy transmitting plate that transmits a laser beam to an opening provided opposite to the laser oscillator, and attaches the energy transmitting plate to the front surface of the opening. A guide plate is provided with a gap for inserting the printing paper, the guide plate is formed by a member that shields the laser beam, the printing paper which is sensitive to the laser beam is inserted into the gap, and the laser beam from the laser transmitter is inserted. The point is to print on printing paper with energy.

[Action]

According to the present invention, since the printing paper outside the explosion-proof case is printed by the output from the laser transmitter provided inside the case, it is not necessary to provide the case with a slit for leading out the printing paper, and the inside of the case is external. Since it does not communicate with the case, the case can have a closed type pressure-resistant and explosion-proof structure. And, the guide plate provided on the front surface of the opening provided opposite to the laser transmitter with a gap for inserting the printing paper is formed of a member that shields the laser beam, so it is safe, and Since the laser beam has a high energy density, clear printing can be performed even through the transmission plate.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the explosion-proof printer of the present invention,
Fig. 2 is a vertical side view of the same as above. In the figure, reference numeral 1 shows the case body, which has a completely sealed pressure-proof explosion-proof structure with a back cover 1a bolted to the back, and a laser emission as a transmitter 2 as a printing structure inside. The machine was housed with the laser emission side facing forward, and the electric wire 9 and signal line 9'of the transmitter 2 were led out of the case body 1.

Then, for example, a glass plate is airtightly attached to the front surface of the case body 1 at a position facing the transmitter 2 as an energy transmission plate 3 through which a laser beam as a printing energy is transmitted.

Reference numeral 4 in the drawing denotes a printing paper storage case. The printing paper storage case 4 has an open rear surface and a lower portion serving as a storage portion 4a for the roll-shaped printing paper 5, and a front surface of the storage portion 4a has a key. An opening / closing lid 7 with 6 was attached. Further, a guide plate 8 for leading out the printing paper 5 is raised from the rear portion of the storage portion 4a so that a slight gap A is formed between the guide plate 8 and the front surface of the case body 1 and the printing paper storage case 4 is formed. Attached to the front of the case body 1,
The upper end of the gap A is used as the outlet 8a for the printing paper 5.

The guide plate 8 is made of a material that shields the laser beam.

Next, the usage and operation will be described. First, the opening / closing lid 7 of the storage case 4 is opened, and the roll-shaped printing paper 5 is placed in the opening / closing lid 7.
The end of the printing paper 5 is inserted into the gap A between the guide plate 8 and the front surface of the case main body 1 with the printing surface facing the side of the case main body 1, is fed upward, and is drawn out from the outlet 8a. Keep it.
As the printing paper 5, a paper which is sensitive to a laser beam is used.

In this way, the printing paper 5 pulled out into the gap A is positioned in front of the transmitter 2 via the energy transmission plate 3, and the printing paper 5 is exposed to the laser beam emitted from the transmitter 2 to replenish the amount of oil. Refueling data such as is printed.

Then, when the printing is completed, the printing paper 5 that has come out of the outlet 8a is pinched and pulled out, the printed portion is pulled out of the guide plate 8, and this portion is cut and handed to a fueling customer or the like.

At the time of printing, a glass plate is interposed between the printing paper 5 and the transmitter 2, but since this is the energy transmission plate 3, there is no risk that this plate 3 will interfere with printing, and the printing paper 5 Since the guide plate 8 exists behind, there is no concern that the laser beam may leak to the outside.

Further, since the case body 1 accommodating the transmitter 2 and the printing paper storage case 4 are separate bodies, and the case body 1 is separated from the printing paper storage case 4 to have an airtight structure, the printing paper storage case 4 is guided. Even if the case 8 communicates with the outside at the outlet 8a, the case body 1 side can be kept airtight, and it is possible to prevent flammable vapor or the like from entering the case body 1 from the outside.

〔The invention's effect〕

As described above, the explosion-proof printer of the present invention does not store the printing paper in the case that houses the printing mechanism.
The case does not need to be provided with a printing paper lead-out port, and as a result, the case can be an inexpensive and safer closed case having a pressure-proof and explosion-proof structure.

Also, on the front of the opening provided facing the laser transmitter,
The guide plate provided with a gap for inserting the printing paper is safe because it is formed of a member that shields the laser beam, and
Since the laser beam has a high energy density, clear printing can be performed even through the transmission plate.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the explosion-proof printer of the present invention,
FIG. 2 is a vertical side view of the same. 1 …… Case body, 1a …… Back cover 2 …… Transmitter, 3 …… Energy transmission plate 4 …… Printing paper storage case 4a …… Storage section, 5 …… Printing paper 6 …… Key, 7 …… Opening and closing Lid 8 ... Guide plate, 8a ... Outlet port 9 ... Electric wire, 9 '... Signal line A ... Gap

Claims (1)

[Claims] 1. A laser transmitter is provided in a flameproof case.
An energy transmitting plate that transmits a laser beam is attached to an opening provided opposite to the laser oscillator, and a guide plate is provided in front of the opening with a gap for inserting printing paper, and the guide plate is used as a laser beam. An explosion-proof printer, characterized in that it is made of a member that shields the paper, a printing paper that is sensitive to a laser beam is inserted into the gap, and printing is performed on the printing paper with laser beam energy from a laser transmitter.