GB2050672A

GB2050672A - Device for Reading Out a Magnetized Information Carrier

Info

Publication number: GB2050672A
Application number: GB8010647A
Authority: GB
Original assignee: IND EN HANDELMAATSCHAPIJ CORE
Current assignee: IND EN HANDELMAATSCHAPIJ CORE
Priority date: 1979-03-30
Filing date: 1980-03-28
Publication date: 1981-01-07
Also published as: FR2452748A1; DE3011601A1; JPS55135372A; NL7902498A

Abstract

A magnetic head 4 for reading a magnetized information card is supported at one end of an arm 2 in such a way that possible deformations of the card do not destroy head-to- card contact. The arm 2 is biased by a spring-loaded plunger 11 cooperating with a recess 12 and the other end of the arm is circular and rests in an oversize hole 14. The magnetic card is guided along slots 8 to pass between the head 4 and a roller 16. The above mounting permits the head 4 a degree of freedom of movement alpha , beta to accommodate deformations of the card. <IMAGE>

Description

SPECIFICATION Device for Reading Out a Magnetized Information Carrier The invention relates to a device comprising at least one head for reading information carrying material, like magnetized material provided on a relatively hard base, said information carrying material being fed by means of a guide between a guide roller and the head of the device.

Such devices are known in many embodiments. Reading out the information from a strip of magnetic material can only take place when there is a close contact between the reading head of the device and the information carrying material. In audio apparatuses and apparatuses in which magnetic tapes are read out in comparable way, this is reached by feeding the tape between the erase and read out head and a hard rubber pressure roller. The flexibility of the applied information carrier strongly promotes this contact, as this material can sufficiently be adapted to the shape of the erase and read out head. This is completely different with magnetic tapes mounted on a relatively inflexible base or carrier. This is for instance the case with bank identification cards, entrance checking cards and the like.Although these cards are made by the manufacturer within narrow tolerances, deformations will already occur in short time which endanger the correct reading of the information or even make it impossible.

The object of the invention is to avoid that these failures occur. According to the invention this is reached by that the head is supported such that it follows all deformations of the base without loosing the surface contact with the material. An appropriate embodiment has as characteristic that the head is mounted on the one end of a spoon the other end of which rests in a hole, whereas between the ends in the spoon a cup-like recess is provided for a pressing means pressing the head against the guide roller and the base respectively. The pressing means is preferably a spring biased plunger.

Furthermore, it is fit for the purpose when the other end of the spoon and the hole are embodied circularly and the hole has a greater diameter than the relative end of the spoon.

The invention will be further elucidated on the basis of the drawing, in which as example an embodiment of the device according to the invention has been indicated. In the drawing: Fig. 1 shows a view of a reading device mounted against the wall plate of an apparatus drawn in the scale of about 2:1, and Fig. 2 shows a side view seen in the direction of the arrow II of Fig. 1.

The device indicated in Fig. 1 and 2 comprises a massive block 1 having narrowed portions which offer room to a spoon 2 and a head 4 mounted at the one end of the spoon for instance by nuts 3. Furthermore hardly important holes 5 and screwing holes 6 with horizontal axes are mounted in the block to be able to secure the block to the wall 7 of the device. In the walls 7 over-measured grooves are mounted serving as guide grooves for (not-drawn) information carriers.

In the block also a hole 9 with vertical axis has been mounted, housing a spring 10, pressing against a plunger 11 which is convex at the lower side cooperating with a cup-like recess 12 of the spoon 2. The spring 10 is a biasing spring pressing on the spoon almost constantly. At the upper side the block is covered with cover plate 13 so that the spring cannot escape. It is however also possible to embody the hole 9 as a so-called blind hole.

The end of the spoon 2 facing away from the head 4 is embodied cylindrically and rests in an over-measured hole 1 4 of the block. At the wall 7 a guide roller 16 is supported by a shaft 15, said guide roller being positioned opposite the head 4.

By the suspension of the head 4 as indicated above it can swing, together with the spoon 2, over the region a of Fig. 1 and the region P of Fig.

2 so that a correct reading of the information is guaranteed.

After the indicated head 4 or also various similar heads arranged one next to the other have read the information carrier and the relative information is worked out by the comparison unit coupled with the device, the (not-drawn) remaining portion of the device automatically takes care for the actions desired in that case, in the usual way, like returning the information carrier, or confiscating it, opening a door or retaining it in closed position, and such actions.

Other embodiments as indicated in the drawing are also within the scope of the claims.

Claims

1. A device comprising at least one head for reading out information carrying material like magnetized material provided on a relatively hard base, said information carrying material being fed by means of a guide between a guide roller and the head of the device, characterized in that the head (4) is supported such that it follows all deformations of the base without loosing the surface contact with the material.

2. A device according to claim 1, characterized in that the head is mounted on the one end of a spoon (2) the other end of which resting in a hole (14), whereas between the ends in the spoon a cup-like recess (12) is provided for a pressing means pressing the head against the guide roller (16) and the base respectively.

3. A device according to claim 1 or 2, characterized in that the pressing means is a spring (10) biased plunger 1).

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Device for Reading Out a Magnetized Information Carrier The invention relates to a device comprising at least one head for reading information carrying material, like magnetized material provided on a relatively hard base, said information carrying material being fed by means of a guide between a guide roller and the head of the device. Such devices are known in many embodiments. Reading out the information from a strip of magnetic material can only take place when there is a close contact between the reading head of the device and the information carrying material. In audio apparatuses and apparatuses in which magnetic tapes are read out in comparable way, this is reached by feeding the tape between the erase and read out head and a hard rubber pressure roller. The flexibility of the applied information carrier strongly promotes this contact, as this material can sufficiently be adapted to the shape of the erase and read out head. This is completely different with magnetic tapes mounted on a relatively inflexible base or carrier. This is for instance the case with bank identification cards, entrance checking cards and the like.Although these cards are made by the manufacturer within narrow tolerances, deformations will already occur in short time which endanger the correct reading of the information or even make it impossible. The object of the invention is to avoid that these failures occur. According to the invention this is reached by that the head is supported such that it follows all deformations of the base without loosing the surface contact with the material. An appropriate embodiment has as characteristic that the head is mounted on the one end of a spoon the other end of which rests in a hole, whereas between the ends in the spoon a cup-like recess is provided for a pressing means pressing the head against the guide roller and the base respectively. The pressing means is preferably a spring biased plunger. Furthermore, it is fit for the purpose when the other end of the spoon and the hole are embodied circularly and the hole has a greater diameter than the relative end of the spoon. The invention will be further elucidated on the basis of the drawing, in which as example an embodiment of the device according to the invention has been indicated. In the drawing: Fig. 1 shows a view of a reading device mounted against the wall plate of an apparatus drawn in the scale of about 2:1, and Fig. 2 shows a side view seen in the direction of the arrow II of Fig. 1. The device indicated in Fig. 1 and 2 comprises a massive block 1 having narrowed portions which offer room to a spoon 2 and a head 4 mounted at the one end of the spoon for instance by nuts 3. Furthermore hardly important holes 5 and screwing holes 6 with horizontal axes are mounted in the block to be able to secure the block to the wall 7 of the device. In the walls 7 over-measured grooves are mounted serving as guide grooves for (not-drawn) information carriers. In the block also a hole 9 with vertical axis has been mounted, housing a spring 10, pressing against a plunger 11 which is convex at the lower side cooperating with a cup-like recess 12 of the spoon 2. The spring 10 is a biasing spring pressing on the spoon almost constantly. At the upper side the block is covered with cover plate 13 so that the spring cannot escape. It is however also possible to embody the hole 9 as a so-called blind hole. The end of the spoon 2 facing away from the head 4 is embodied cylindrically and rests in an over-measured hole 1 4 of the block. At the wall 7 a guide roller 16 is supported by a shaft 15, said guide roller being positioned opposite the head 4. By the suspension of the head 4 as indicated above it can swing, together with the spoon 2, over the region a of Fig. 1 and the region P of Fig. 2 so that a correct reading of the information is guaranteed. After the indicated head 4 or also various similar heads arranged one next to the other have read the information carrier and the relative information is worked out by the comparison unit coupled with the device, the (not-drawn) remaining portion of the device automatically takes care for the actions desired in that case, in the usual way, like returning the information carrier, or confiscating it, opening a door or retaining it in closed position, and such actions. Other embodiments as indicated in the drawing are also within the scope of the claims. Claims

4. A device according to one of the claims 13, characterized in that the other end of the spoon and the hole (14) are embodied circularly and the hole has a greater diameter than the relative end of the spoon.

5. A device as indicated in the drawing and/or discussed on the basis thereof.