JPH0516360B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) In the printing industry, it is possible to reprint by erasing the printing film on the printed surface of printed matter, especially prepaid cards such as telephone cards, which are printed on the synthetic resin sheet surface. This invention relates to an automatic card drying device installed in a card ink film erasing device.

(Prior art) Conventionally, the printing film on the printed surface of a prepaid telephone card has been manually erased using a solvent such as thinner, ethyl acetate, or triclane.
Also, although the gist is slightly different from the present invention, it is used as one of the printing methods to erase cards with printing ink attached during the printing process, rather than the printed finished cards. Cleaning of the surface of the blanket cylinder in offset printing is well known. For example, JP-A-55
Publication No. 148164 discloses a device for cleaning a blanket cylinder of a printing press with a cleaning fabric, comprising: a) end frame means positioned close to both ends of the blanket cylinder; b) a cleaning fabric supply roll; a cleaning fabric take-up roll and means for guiding the cleaning fabric from the supply roll to the take-up roll; c means for guiding water to the cleaning fabric; and d means for guiding a solvent other than water to the cleaning fabric. and (e) means for moving said cleaning fabric into contact with a portion of a blanket cylinder, (a) said last means being inflatable to move said cleaning fabric into contact with a blanket cylinder. , a flexible member that can be loosened to remove the cleaning fabric from the blanket cylinder.

Furthermore, Japanese Utility Model Application Publication No. 58-181543 describes, ``A blanket cylinder characterized in that the blanket cylinder is cleaned by reciprocating a brush in the axial direction of the rotatable blanket cylinder. Further, in Japanese Patent Application Laid-open No. 56-501197, ``a mechanism for lifting a cleaning cloth toward a blanket and transporting it at a pace, and a cleaning liquid supplied by at least one pump; An apparatus for cleaning rubber blankets of a printing press having a beam with a nozzle configured to wet the cloth, wherein for each cleaning operation an accurately regulated amount of cleaning liquid is introduced into the nozzle beam; A device for cleaning a rubber blanket of a printing press, characterized in that the beam is connected to a compressed air line for blowing out a certain amount of liquid within the beam.

(Problem to be solved by the invention) In a prepaid card such as a telephone card, characters or symbols printed on the front side can be erased and newly erased on the front side without impairing the function of the magnetic printing on the back side. It is necessary to make it possible to print new characters, pictures, etc., regardless of the pictures, etc. Currently, telephone cards are printed as follows.

The printing company purchases white cards (on which only the NTT mark and telephone card 50 characters are printed on a white background) sold at NTT telephone office counters, and prints the characters specified by the customer on the surface of the cards. When printing a pattern, if the already printed character symbol becomes an obstacle to printing the ordered pattern, it is first necessary to erase this pattern.

In addition, in the event that printing damage occurs, the purchase price of the prepaid card (telephone card) will be borne by the printing company, so it will be necessary to erase this printing and reuse it.

In this case, it is of course an essential condition that there be no adverse effect on the magnetic printing on the back side.

Therefore, in the conventional technology described above, manual erasing is not efficient, but it also has problems such as the volatility of the solvent and ignition caused by volatile gas depending on the type of solvent, and continuous processing of a large number of squares is not possible even if it is only a few sheets. It is possible. The blanket cleaning method described above is not suitable for cards, and the above-mentioned problems have not been solved.

Furthermore, no automatic means has yet been proposed for drying the wet cards one by one through this process.

(Means for Solving the Problems) The present invention relates to an apparatus for automatically drying cards, particularly to solve the above-mentioned problems. When connected at several points at appropriate pitches and rotatably installed in a container, both a printing ink erasing solution is placed in the container and a volatile material with a lighter specific gravity than the above is placed on the upper surface of the erasing solution. Cards held by the gripping body containing a small amount of surface liquid pass through the erasing liquid to peel off the ink film, and the ink film is erased through a filter through a hole formed at the bottom of the container. In a device in which the surface liquid flows into the surface liquid tank by overflow, the cards are placed between the partitions of an endless belt having a number of partitions facing the end of the chute for discharging the treated cards. This is a card drying device in a printing ink erasing machine for cards, which is characterized by storing cards, drying them by supplying warm air, and stacking them in a collection box.

(Function) Cards such as Telephone Card, Orange Card, and other prepay cards have magnetic printing on one side.
The other side is printed with advertisements, paintings, and other designs. This printing is done on telephone cards by printing marks printed by NTT and characters such as "Telephone Card 50", and then various designs, or by printing only the above characters and adding a design with annotations on a white background. There are things that are becoming possible.

If this design is reprinted, a general printing company will print it according to the customer's order, but if the above characters become an obstacle during printing, it will be necessary to erase the characters, and there will be no misprinting at the printing shop. If this occurs, you will have to erase the card again and regenerate it, otherwise you will incur great damage. Therefore, the present invention is intended to carry out these reproducing means easily, quickly and safely, and not to cause any hindrance to magnetic printing on the back side.

As the card rotates endlessly in the container, the card passes through a layer of surface liquid, such as water, which is present in the upper layer of the container and has a lower specific gravity than the lower eraser liquid, and passes through the lower layer eraser liquid such as trichlene, methylene chloride, chloroform, etc. passes through the layers of At that time, if necessary, the printed surface is rubbed with a cleaning member such as a brush or cloth, or a known ultrasonic generator is provided to apply minute vibrations to the erasing liquid for erasing. The printing surface of the card usually has a white matte layer, and means to improve the printing effect is provided, but cards printed on this layer (generally UV ink is used) use an erasing liquid (hereinafter referred to as methylene chloride). (When using a white mat layer), the printed film is peeled off in scales and erased along with the white mat layer. However, it is easy to re-form a white matte layer on a card from which the white matte layer has been erased, but it is also possible to print directly on the card base, such as a synthetic resin material such as polyester, or to print a multicolor layer on the white matte. For items that have been subjected to UV light baking treatment during multiple printing, when erasing the printed film, simply passing through the erasing liquid may not be enough. By rubbing with a material such as, the printed film becomes powder and is removed, and the card is regenerated by sufficient erasing. Furthermore, in the case of silk screen printing, the printing ink is dissolved in the erasing liquid, flows into the liquid, and is erased.

Cards that have been erased in this way remain wet due to the treatment with the erasing liquid, surface liquid, etc., and are immediately stacked and adhered together, which also poses a problem in printing again.

In the present invention, after card processing is completed, the cards are discharged from a discharge position into a chute and are dropped into a drying box, and the cards are stored one by one between partition plates formed on an endless belt provided at this drop position and heated. It is dried by the wind, and after drying, it slides down from between the partition plates and accumulates.

(Example) Next, one example of the present invention shown in the drawings will be described in detail.

A indicates the device of the erasing part, 1 is the container,
A conveyance member 2 such as an endless chain is suspended inside by a guide member 3 such as a chain wheel or a guide wheel, and is rotated in the direction of the arrow by a motor.

The container 1 is formed such that the above-mentioned erasing liquid 5 is circulated from a jet nozzle 6 through a filter member 7. Furthermore, a surface liquid 8 such as water having a specific gravity lighter than the liquid 5 is supplied into the erasing liquid 5 from a water supply spout 9.

Further, the container 1 has a through hole 4 in the bottom bottom, which communicates with the erasing liquid tank B, and the erasing liquid 5 that has passed through the through hole 4 passes through a filter member 7 due to the difference in specific gravity, and is ejected from the reflux port 10 through the nozzle. Reflux to 6. At the same time, the surface liquid 8 also passes through the through hole 4, but due to the difference in specific gravity, it rises to the surface of the liquid 8 in the container 1 and overflows there into the surface liquid tank W, filtering the surface liquid filtration member 11. It flows out from the outlet 12 through the outlet.

The detailed configuration of the erased portion A is described in Japanese Patent Application No. 62-165971, which is an earlier application of the present application. A plurality of them are provided on the conveying member 2 at appropriate intervals.

The spring pieces provided on both sides of the frame of the gripper 16 engage with the cams and widen the axial distance between the spring pieces, thereby feeding the card C to the passing position of the gripper 16 and holding it, and also holding it at the release position E. is released and card C is ejected and falls by chute 17.

The present invention provides a second,
A dryer G as shown in FIG. 3 is provided.

That is, the belt 1 has a large number of partition plates 18 arranged in parallel inside the container.
9 is provided to rotate endlessly, and is located at the end of the chute 17, and is connected to the heater 20.
It is designed so that warmed air is pumped into it.

Next, to explain the operation, an automatic card feeding device (not shown) pushes out the bottom card of stacked cards C onto the passing position of the gripping body, and the spring pieces of the gripping body are expanded. A spring piece located between the cams is spread out from the cam to grip the card C, and is sent into the surface liquid 8 by the movement of the conveyance member 2, and the printed ink film on the card C is peeled off by the ejection of the erasing liquid 5. Further, the card C is cleaned by washing with water from the water supply spout 9, and when it reaches the discharge position E, the grip is released by the cam and the card C falls inside the chute 17.

Since the erasing liquid 5 has a higher specific gravity than the surface liquid 8, it flows down through the through hole 4, the ink film is removed by the filter member 7, and the erasing liquid 5 flows back to the jet nozzle 6. In addition, the surface liquid 8 overflows the upper layer of the erasing liquid 5 onto the partition wall 33,
The ink film mixed in this is removed by a filtering member 11, and the ink is discharged.

The cards C that have fallen from the chute 17 are fed one by one between the partition plates 18 and the belt 19
The cards C are moved by the movement of the belt 19 and dried by the air heated by the heater 20, and the partition wall 18 stacks the dried cards C in the stacking box 21 at the U-turn position of the belt 19.

(Effects of the Invention) The present invention not only makes it possible to automatically erase a printed film, but even in the case of a highly volatile eraser, the eraser can be safely and easily removed by covering it with a non-volatile liquid with a lighter specific gravity, such as water. In addition, since the card wetted by the liquid can be completely dried and taken out, it can be immediately transferred to the printing process again, and there is no problem such as stickiness of the card.

[Brief explanation of the drawing]

The figure shows an embodiment of the card drying device in the card printing ink erasing machine of the present invention.
The figure is a schematic cutaway front view of a printing ink erasing device for cards, FIG. 2 is a cutaway front view of a drying device, and FIG. 3 is a cutaway side view. A... Erasing device, B... Erasing liquid tank, C... Card, D... Supply device, E... Discharge position, F... Automatic supply device, W... Surface liquid tank, 1... Container, 2 …
...Conveyance member, 3...Guiding member, 4...Through hole, 5...
... Erasing liquid, 6 ... Spray nozzle, 7, 11 ... Filtering member, 8 ... Surface liquid, 9 ... Water supply spout, 16 ...
Gripping body, 18... Partition plate, 19... Belt, 20...
...Heating machine, 21... Collection box.

Claims (1)

[Claims] 1 A gripping body that holds cards, and the gripping body,
By connecting several points of an endless conveyor member at appropriate pitches and rotatably installing it inside the container,
In both cases, a printing ink erasing liquid is contained in the container, and a surface liquid having a lighter specific gravity and less volatility is stored on the upper surface of the erasing liquid, so that the cards held by the gripping body pass through the erasing liquid. In the apparatus in which the ink film is peeled off by the ink film, and the ink film is caused to flow into the erasing liquid tank through a filtration member through a hole formed at the bottom of the container, and the surface liquid is caused to flow into the surface liquid tank by overflowing, the above-mentioned treatment is carried out. The present invention is characterized in that the cards are housed between the partitions of an endless belt having a large number of partitions facing the end of the chute from which the finished cards are discharged, and the cards are dried by supplying temperature and are accumulated in a collection box. A card drying device in a printing ink erasing machine for cards.