JP2002519802A - Data system having a support surface for reproducing a data head - Google Patents

Abstract

(57) [Summary] The data system (1) includes a credit card type substrate (3) and a data unit (2). The substrate includes first and second edges (28, 30) and a data surface area (26) between the edges. This data unit comprises a base (4), a substrate support (60) mounted on the base for controlled movement along the first path (14), and a data head driver (6) (also a (Including a data head) attached to the base. The data head reproduces along a second path (10) oriented perpendicular to the first path. The data head includes a data surface area on the substrate and a first data head support surface and a second surface located at opposite ends of a second path adjacent to the first and second ends of the substrate. Contact the second data head support surface (120, 122). The data head support surface and the data surface area are coplanar. The data unit also comprises a substrate feeder (16) and a substrate placer (68, 70, 82, 94, 98). The substrate feeder delivers the substrate to a substrate support and removes the substrate from the substrate support, and the substrate placer properly positions the substrate on the substrate support, and The substrate is fixed to the substrate support.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION Digital data is stored in many forms. One data storage device is
A rotating disk with a magnetic surface containing the digital data is used. The disc typically rotates at a high speed, where various tracks of data are accessed by radially movable data heads. Another type of data storage device is a credit card that has a magnetic stripe along one surface. However, such cards have a limited storage capacity due to the nature of the magnetic stripe and the method of recording data on the magnetic stripe.

SUMMARY OF THE INVENTION The present invention relates to a data system that is particularly suitable for use with credit card type substrates. This data system allows much more data to be written and read on the substrate than is available on credit cards using conventional magnetic stripes.

The data system generally includes a substrate (for example, a credit card type substrate) and a data unit. The substrate has first and second ends and a data surface area between the ends. This data surface area is preferably plated or sputtered with nickel-cobalt, unlike conventional credit cards that use iron (II) oxide. This data unit comprises a foundation that supports several components. A substrate support, which supports the substrate, is mounted on the base for controlled movement along the first path. This first path may be straight or curved. A data head drive is mounted on this foundation, and this
In accordance with the second path, a reproducibly movable data head is provided. The first and second paths generally intersect each other (typically at right angles). The data head includes a data head surface that contacts the data surface area on the substrate. The data unit also includes a first data head support surface and a second data head support surface disposed along a second path adjacent the first and second ends of the substrate. . This data head surface also
As the data head moves along the second path, it contacts the first data head support surface and the second data head support surface.

[0004] These data head support surfaces are preferably co-planar with the data surface area of the substrate. This provides a smooth movement of the data head between the data surface area and the data head support surface. The use of a data head support surface provides an area for the data head to accelerate and decelerate at each end of the path beyond the data surface area, so that the data head has a constant surface velocity at its data surface You can exercise over the area.

[0005] The invention also includes a substrate handler and a substrate placer including a substrate feeder.
The substrate feeder delivers a substrate to the substrate support and removes the substrate from the substrate support. The substrate placer automatically places the substrate on the substrate support and secures the substrate to the substrate support. The substrate placer typically includes a feed roller, and may also include a cleaner roller that purifies the data surface area as the substrate passes through the substrate feeder.

[0006] Other features and advantages will be apparent from the following description, in which the preferred embodiments are set forth in detail, in conjunction with the accompanying drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates, in a relatively simple schematic form, a data system 1 made in accordance with the present invention. The data system 1 includes a data unit 2 and a board 3,
The substrate 3 is preferably in the form of a credit card sized card 3. The data unit 2 comprises a base 4, which comprises various other components, a data head driver 6, which drives a data head 8 along a second path 10.
Substrate or card support assembly 12 (which moves card 3 or other substrate along first path 14), and substrate feeder 16 (which transfers card 3 to and from its substrate support assembly) Drive)).

[0008] The card 3 is preferably made of a sandwich-structured 0.50 mm (0.020 inch) thick ceramic score and approximately 0.13 mm (0.005 inch) thick suitable plastic material upper and lower surfaces. Surface. FIG. 2A illustrates the front side or bottom side 20 (relative to the figure) of the card 3. This card 3 has an embossed letter area 22 and a back, data side or top side 24 (having a data surface area 26 extending between the first and second ends of the card and (28, 30)). .

[0009] The side 24 also preferably comprises a magnetic (typically iron (II) oxide), stripe 32 similar to that used in conventional credit cards. The data surface area 26 is preferably a magnetic area, and may also include iron (II) oxide as a magnetic material. However, due to the use environment described below, region 26 is desired to be smooth and resistant to abrasion. This can be achieved in a variety of conventional ways, such as sputtering with carbon.

In the preferred embodiment of FIGS. 2A-2C, only a portion of side 24 is covered by data surface area 26. In some embodiments, it may be desirable to cover most or all of surface 24 with data surface area 26. A directional arrow 34 may also be included to assist the user in properly inserting the card 3 into the card slot 36 shown in FIGS. 1, 3, 4A and 4B. As shown in FIG. 3, the opening 38 in the card insertion slot 36 has a portion enlarged to accommodate the embossed letter area 22 shown in FIGS. 2A and 2B.

FIGS. 4A and 4B illustrate a portion of the substrate feeder 16 having a card insertion slot 36 attached to the front panel 40 of the data unit 2. The user starts the read / write process by inserting the card 3 far enough into the opening 38 of the card insertion slot 36 and letting the light beam pass through the card sensor 42. This light beam causes the three sets of feed rollers 44, 46 and 48 to begin rotating as indicated by the arrows in FIGS. 4B and 5D. Feed rollers 44, 46 and 48 are driven by feed system motor 50 through various pulleys 52 and belts 54. Once the user has pushed the card 3 sufficiently into the unit 2 so that the first end 28 of the card 3 is captured in the nip of the roller 44, the feed roller is turned on as indicated by FIGS. 5A-7A. Then, the card 3 is automatically moved through the substrate feeder 16.

FIGS. 1, 5A and 5B illustrate the use of a magnetic stripe reader 56. FIG. The magnetic stripe reader reads any information on the magnetic stripe 32, if appropriate, in a conventional manner. The substrate feeder 16 also includes a reverse rotation cleaning roller 58. Cleaning roller 58 is not shown in FIG. 1 for clarity. Using the cleaning roller 58, the data surface area 26 ensures that there are no particles and debris before being accessed by the data head 8. The substrate feeder 16 also includes a reflection sensor 54. This sensor detects the presence of the data surface area 26. If the card 3 does not have the data surface area 26,
Feed rollers 44, 46 reverse the direction of card 3 and return the card to the user. Here, only the magnetic stripe 32 is the magnetic stripe reader 5.
6 is read. Assuming that card 3 comprises data surface area 26,
Feed rollers 44, 46, 48 pass card 3 past optical sensor 61 and continue the movement of card support assembly 12 to card support 60.

One end 62 of the card support 60 is open to allow free entry of the card 3 into the card support surface 64 of the card support. Card support surface 64
Has an opening 66 formed through the center of its surface, as described below with reference to FIGS. 9A and 9B. 7A and 7B, it can be seen that the card support 60 includes a fixed side positioning member 68 and a movable side positioning member 70. Members 68 and 70 have overhang lips 72 and 74. When the card support 60 is in the load / unload position of FIGS. 6A, 6B and 7A (which corresponds to the dashed portion of the card 3 in FIG. 1), the movable side positioning member 70 Lower end 76
Rotate to that position in FIG. 7A. Here, the fixed stud 78 extends upward from the base 4. This allows the card 3 to be freely driven onto the surface 64 of the card support 60 between the positioning members 68 and 70. The initial movement of the assembly 12 along the path 14 to the data head driver 6 is such that the positioning member 70 engages the fourth end 81 of the card 3 and the positioning member 68
To drive the third end 79 of the card.

The first end 28 of the card 3 is driven by the movement of the card support 60 along the first path 14 toward the data head driver 6 relative to the platform end 80 of the card support 60. . This is from the position indicated by the broken line to the position indicated by the solid line in FIG. Such movement along the first path 14 causes the second end 30 of the card 3 to mate with a bent card guide 82, which causes the card 3 to move, as shown in FIGS. 8A and 8B.
It is completely driven onto the card support 60. The platform end 80 is positioned above the card 3 when its upper end 84 is compressed upwardly against the mating lips 72 and 74 of the members 68 and 70 in the following manner, as shown in FIG. 6B. It is sized to be slightly (e.g., 0.015 inch) below surface 24.

The card support 60 is mounted on a carriage 86 and carried. The carriage is slidable along a pair of guide shafts 88, which are supported on the base 4 by shaft clamps 90. In FIG. 1, only one of these is shown. The card support 60 with the carriage 86 and thus the card 3 is driven along the first path 14 by the carriage motor 92.

The vertical movement or indexing of the card 3 is achieved by using a C-shaped spring 94 mounted inside the carriage 86. Spring 9
The upper end 96 of 4 is aligned with and passes through an opening 66 formed in the card support surface 64 and is illustrated in FIG. 6A. The carriage 86 moves along the first path 14 from the load / unload position (corresponding to the position indicated by the broken line in FIG. 1) to the data head driver 6, and the spring 94 moves from the base 4. It rests on an upwardly extending cam 98. This causes the card 3 to bend upwardly with respect to the lips 72 and 74 and remain in place against inadvertent movement during read / write operations.

Returning to FIG. 1, card 3 is shown with data head 8 at track “000”. The data head 8 is preferably of the magnetic head contact type, which contacts the data surface area as the data head 8 moves along the second path 10. The data head 8 is mounted on the distal end of the arm 98, which is mounted on the head carriage 100. The head carriage 100
It is slidably attached to the pair of guide shafts 102. The guide shaft is connected to the motor mounting plate 104 by a pair of shaft clamps 106.
Attached to. The motor mounting plate 104 is adjustably mounted on the base 4 by four spacer mountings 108. The data head driver 6 also includes a read / write head motor 110. This motor drives the pulley 112 alternately in clockwise and counterclockwise directions. Pulley 112
Is connected to the carriage 100 by a drive band 114. It passes around a pair of roller bearings 116 and pulleys 112.

The position of the data head 8 with respect to the data surface area 18 is provided by the rotational position of the pulley 112 and by a sensor interrupter 118 sensed by a pair of sensors 119. The sensor 119 is substantially aligned with the ends 28 and 30 of the card 3 when the card 3 is in the read / write position of FIG.

The second path 10 extends beyond the first and second ends 28 and 30 and over the data head support surfaces 120, 122. Data head support surface 120, 1
22 is substantially flush with the data surface area 18 so that the data head 8 moves smoothly from the area 18 onto the support surfaces 120,122. The use of this support surface 120, 122 allows the data head 8 to move across the data surface area 18 at full speed. Preferably, the data head 8 slows down, stops, reverses direction, and then each accelerates toward the next path while over one of the data surfaces 120,122. During this deceleration, stop, direction reversal, and acceleration, the carriage motor 92 moves the card 3 along the first path 14 for one time.
Have the opportunity to index by the width of one track. Thus, by the time the data head 8 is ready to re-engage with the data surface area 18, the next track (which may or may not be an adjacent track) will be aligned with the second path 20. And can therefore be read or written by the data head 8. Data head support surfaces 120 and 122 are preferably low friction, low wear surfaces suitable for sliding movement of data head 8 therein. To ensure proper alignment, each data surface 120 is preferably provided with a suitable height adjuster 124. The gap between the surfaces 120, 122 and the card 3 is preferably small enough for the data head 8 to smoothly cross the gap. If necessary, support in the gap can be provided, for example, by a small air jet.

The data head 8 is preferably a data head support surface 120 or a data head support surface 122 when the card 3 moves from a dashed line to a solid line in FIG.
It is in the upper rest position. This keeps the data head 8 out of contact with the side positioning members 68 during such movement. At the completion of the read / write operation, the carriage 86 moves to the load / unload position of FIGS. 7A and 10 where the push solenoid 126 is activated (see FIG. 10) to remove the card 3 Push until the card is captured between third feed rollers 48. The push solenoid 126 has a plunger 127, which
The first end 28 of the card 3 fits through the gap 128 at zero. The feed rollers 44, 46, and 48 are all rotating in the opposite direction in FIG. 5B, but they are only around the position of FIG.
To drive the card 3 back.

In use, the user inserts the card 3 into the opening 38 in the card insertion slot 36.
Through which the board reader 16 drives the card to the magnetic stripe reader 56 and the reflection sensor 59. Assuming that the reflection sensor 59 detects the presence of the data surface area 26, the rollers 46, 48 continue to drive the card 3 to the substrate support assembly 12. After the card 3 has passed the third feed roller 48, due to the inertia of the card, the card continues to move onto the support surface 64 of the card support 60. To ensure that the first end 28 of the card 3 abuts the base end 80 of the card support 60, a card guide 82
7A from the load / unload position (which is the position of the dashed line in FIG. 1) to the read / write position (which is the position of the solid line in FIG. 1). Is fitted with the second end 30 when moving up to. The third end 79 of the card 3 moves during the initial movement of the card from the dashed position to the solid position in FIG.
The rotation of the spring-deformed side positioning member 70 drives the fixed side positioning member 68. Continued movement of the card 3 to the position shown by the solid line in FIG. 1 causes the spring 94 to move the card 3 until the lateral ends 79, 81 of the card engage the lips 72, 74 of the locating members 68, 70. This causes a deformation such as driving upward.

Once in the initial read / write position of FIG. 1, motor 110 drives data head 8 from one of data head support surfaces 120, 122 and data surface area 26 of card 3. In a preferred embodiment, the motor 110 drives the data head 8 until the data head 8 reaches the card 3 by, for example, 31
It reaches its desired speed of 8 cm / sec (125 inches / sec). It is desired that information about the data surface area 26 be written at a rate of 36,000 bits per inch or more. The density of the recording is determined by several factors.
Such factors include: uniformity in the movement of the data head 8 through the area 26, the structure of the head 8, the structure of the data surface area 6, the frequency of the read / write clock, and other conventional. Factors.

At the end of each path, the card 3 is to be accessed while the data head 8 moves over the data head support surface 24 during its deceleration, stopping, reversing direction and acceleration. Indexed to next track position. If desired, access to sequential or specific tracks (eg, track 000, then track 023, then track 085, then track 031, etc.) may be selected. The composition of the data recorded in the data surface area 26 depends substantially on the selected controller. The controller for unit 2 may be of the conventional type (eg, Realtec of San Diego)
(Manufactured by California and sold as product number TCNGE09). In one preferred embodiment, 350 tracks (
Each track has 56 sectors with 256 bytes per sector, for a total of 5,017,600 bytes).

If it is desired that the card 3 be removed from the unit, the data head 8 is fastened on one of the two support surfaces 120, 122 and then the motor 92 moves the carriage 86, Drive back to the load / unload position, at which point push solenoid 126 is activated. Plunger 127
(Which passes through the gap 128 at the platform end 80) pushes the card 3 until the card 3 is engaged by the third roller 48, at which point it is in the direction opposite to that of FIGS. 5B and 6B. Rotate. The card 3 is then delivered to a user in a position substantially as shown in FIG. 4B.

In a preferred embodiment, the data head 8 is in physical contact with the data surface area 26 as well as the support surfaces 120, 122. It may also be possible to use a so-called flying head. Here, the data head 8 is moved to the data surface area 26.
Does not contact with However, it is believed that the gaps at edges 28, 30 cause the flying head to break on data surface area 26. The invention will also be described with reference to magnetically encoded data. If desired, this data can be analog in nature and can be textual, optical or magneto-optical.

FIG. 11 illustrates the location of another embodiment of the present invention. Here, like reference numbers refer to like elements. In this case, the data unit 2A uses a vibrating data head 8A. The head passes along a second path 10A in an arc shape. The data head support surfaces 120A, 122A are arranged somewhat differently, but provide the same services: supporting the data head 8A at each end of its movement. The sensor 119A indicates that the data head 8 has passed through the data surface area 26A from the data surface area 26A so that when the data head 8 is indexed along the first path 14 the card 3A decelerates and reverses. Indicates the point at which the acceleration movement of the orientation can begin.

[0027] Other modifications and changes may be made to the disclosed embodiments without departing from the subject matter of the invention as defined in the appended claims. For example, the cleaning roller 58 may be replaced or added with an air vacuum head or compressed air nozzle to remove debris from the data surface area 26.

[Brief description of the drawings]

FIG. 1 is a simplified plan view of a data unit made in accordance with the present invention.

2A, 2B, and 2C are a front view, a side view, and a rear top view of the substrate of FIG. 1;

FIG. 3 is a side view illustrating the shape of an opening in the card insertion slot of FIG. 1;

FIG. 4A is a simplified schematic diagram illustrating the card insertion slot, card sensor, and first feed roller of the substrate feeder of FIG. 1; FIG. 4B illustrates the components of FIG. 4A. Here, the card is inserted through the card slot and the card sensor, which activates the first feeder roller,
The feed roller then engages the card as the user inserts the card through the card slot.

FIGS. 5A and 5B are a plan view and an upper side view of a portion of the substrate feeder of FIG. 1; This also illustrates a counter-rotating cleaning roller not shown in FIG. 1 for clarity. Here, the card is mated by a first set of feed rollers and a second set of feed rollers, and the upper surface of the card is cleaned by the oppositely rotating cleaning roller.

FIGS. 6A and 6B illustrate the movement of the card between its third feed roller past the sensor of the card support assembly of FIG. 1 and toward the card support.

FIG. 7A is a simplified diagram showing the bottom fit of a movable side positioning member. Here, the stud extends from its base when the card carriage on which the card support is mounted is in the load / unload position. This load / unload position is indicated by a dashed card in FIG. FIG. 7B shows the ejection of the movable side positioning member. At this time, the carriage starts to move from the load / unload position toward the position indicated by the solid line in FIG. 1, and thus the third end of the card between the movable side positioning member and the fixed side positioning member. And capture the fourth end.

8A and 8B are plan views of a card support. FIG. This illustrates how the card guide of FIGS. 1 and 6A deforms the card to its fully loaded position as the carriage moves toward the solid position of FIG.

9A and 9B show the movement of the carriage toward the position indicated by the solid line in FIG. 1,
Thus, when the card is secured to the stationary side locating member and the inwardly extending lip of the movable side locating member, the movement of a vertically deforming spring that fits into the bottom surface of the card. Is shown.

FIG. 10 illustrates that once the read / write procedure has been performed, once the card is returned to the load / unload position of FIG. 7A, the card will re-engage with the third feed roller. FIG. 2 shows the extension of the push solenoid of FIG.

FIG. 11 is a simplified plan view of the location of another embodiment of the present invention. Here, the data head is mounted on the end of a rotating arm, which pivots the read / write head to a second, arcuate path, as opposed to the linear second path of the embodiment of FIG. Pass along the path.

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SL, SZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR , BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS , JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZA, ZW. Removed from the body, and the substrate placer properly positions the substrate on the substrate support and secures the substrate to the substrate support.

Claims (25)

[Claims] A data unit for use with a substrate having a first end and a second end and a data surface area therebetween, comprising: a base; a substrate support; A substrate support formed to support a rectangular substrate having an edge and attached to the base for controlled movement along a first path; a substrate feeder comprising: A substrate feeder configured to deliver a substrate to a body and to remove the substrate from the substrate support; a substrate placer that places the substrate on the substrate support; And the substrate placer is configured to secure the substrate to the substrate support, the substrate locator comprising side edge guides attached to the substrate support and bent toward each other, such that the edge guides are Located between A first data head support surface and a second data head support surface, wherein the first data head support surface comprises a first data head support surface and a second data head support surface; The body surface and the second data head support surface are located at opposite ends of a second path and are adjacent to the substrate support, wherein the first path and the second path intersect each other. A first data head support surface and a second data head support surface; a data head drive mounted on the base, the data head drive being reproducible along the second path. A data head drive comprising a movable data head on the first data head support surface when the data head moves along opposite ends of the second path. And the second A data head surface which contacts the database support surface, the data unit. 2. The method according to claim 2, wherein the substrate support moves only along the first path.
The data unit according to claim 1. 3. The data unit of claim 1, wherein the second path is a selected one of a straight path and an arcuate path. 4. The substrate locator moves along the first path to a load / unload position, so that when in the load / unload position, the substrate support is moved to the substrate support. The data unit of claim 1, wherein the substrate placer comprises means for separating the side edge guide when a substrate is attached or allowed to be removed from the substrate support. 5. The data unit according to claim 1, wherein the side end guide includes an overhang lip formed to overlap a substrate when the end guide is fitted with the end. 6. The data unit of claim 5, wherein the overhang lip comprises a substrate that mates with a surface oriented substantially flush with the data head support surface. 7. The substrate support according to claim 1, wherein the substrate support includes a first end limiting surface arranged to mate with an edge of the substrate to limit movement of the substrate on the substrate support. Data unit described in. 8. The substrate placer includes an end guide, the end guide being attached to the base, and wherein the substrate support moves from a load / unload position to a use position. A second end of the substrate capable of mating with the second end of the substrate to move the substrate relative to a first end-limiting surface, wherein the substrate can be mounted to the substrate support in the load / unload position; 8. The data unit of claim 7, wherein the data head can be removed from the substrate and, at the position of use, the data head moves along the second path. 9. The data unit according to claim 1, wherein the substrate feeder includes a feed roller and at least one substrate cleaner rower. 10. A data system, comprising: a substrate, comprising: a substrate having first and second ends and a data surface area therebetween; and a data unit, comprising: A substrate support, the substrate support supporting the substrate, the substrate support being attached to the base for controlled movement along a first path; first data A head support surface and a second data head support surface, wherein the first data head support surface and the second data head support surface are disposed at opposite ends of a second path; A first data head support surface and a second data head support surface adjacent the first end and the second end of the substrate, wherein the first path and the second light intersect each other; ; Attached to the base A data head drive comprising: a data head drive comprising a data head reproducibly movable along the second path; and wherein the data head comprises the second data head. A data head surface that contacts said data surface area and said first data head support surface and said second database support surface when moving along said path. 11. The substrate according to claim 10, wherein the substrate includes an outer layer bonded to a central layer.
The data system described in 1. 12. The data system of claim 11, wherein said outer layer comprises a plastic material and said central layer comprises a ceramic material. 13. The data system of claim 10, wherein said data surface area comprises nickel-cobalt. 14. The data system of claim 10, wherein said data surface area extends to both said first end and said second end. 15. The data head support surface and the second data head support surface are substantially coplanar with the data surface area.
0. The data system according to 0. 16. The substrate unit, wherein the data unit comprises: a substrate feeder for delivering the substrate to the substrate support and removing the substrate from the substrate support; 16. The data system of claim 15, comprising a substrate handler comprising: a substrate placer for properly positioning the substrate on the substrate support and securing the substrate. 17. The data system of claim 16, wherein said substrate feeder comprises a data surface area sensor for detecting said data surface area. 18. The data system of claim 17, wherein said substrate comprises a magnetic stripe region, and wherein the substrate reader comprises a magnetic stripe reader for reading information from said magnetic stripe region. 19. The data system of claim 16, wherein said substrate support is configured to support a rectangular substrate having an edge. 20. The substrate placer comprises side edge guides attached to the substrate support and bent toward one another such that a substrate disposed between the edge guides comprises: 20. The data system of claim 19, having an edge captured in between. 21. The apparatus of claim 21, wherein the substrate support moves along a first path to a load / unload position so that the substrate is in the load / unload position. 21. The data system of claim 20, further comprising means for separating said side edge guides when they can be freely attached to or removed from said substrate support. 22. The substrate placer comprises a side end guide, the side end guides being attached to the support and bending relative to each other, such that they are located between the end guides. 20. The data system of claim 19, wherein the substrate has an edge captured therebetween. 23. The substrate placer includes means for bending the substrate relative to the overhang lip, the overhang lip defining the data surface area so as to be substantially coplanar with the acceleration density surface. 23. The data system of claim 22, wherein the data system is located. 24. The substrate support comprises a first end limiting surface positioned to mate with an edge of the substrate, thereby limiting movement of the substrate on the substrate support. The data system according to claim 16. 25. The substrate placer comprises an end guide, the end guide being attached to the base and mating with a second end of a substrate, such that the substrate support is loaded / unloaded. Moving the substrate relative to the first end limiting surface when moving from the position of use to the position of use, wherein in the load / unload position the substrate is attachable to the substrate support. 25. The data head of claim 24, wherein the data head moves along the second path and contacts the data surface area at the point of use and is removable from the substrate support. Data system.