Stock material or miscellaneous articles – Sheet facing and longitudinally noncoextensive with web or... – Sheet smaller in both length and width
Patent
1996-10-24
2000-01-11
Yaminitzky, Marie
Stock material or miscellaneous articles
Sheet facing and longitudinally noncoextensive with web or...
Sheet smaller in both length and width
428195, 428209, 428694R, 428900, 428913, 3461351, 361737, B32B 500, G06K 1900
Patent
active
060133457
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a card, a jig, and a card reader-writer. The card is characterized by specifying an area for bonding heat reversible recording medium, particularly a band-shaped heat reversible recording medium (hereafter referred to as "Rewrite Tape") where it is possible to repeatedly write information. The jig is supplied to bond a rewrite tape on the card. The card reader-writer is suitable to read and write the electronic information to semiconductor devices such as IC, memory, etc., in the card, and to write and erase the information in rewrite tapes.
BACKGROUND TECHNOLOGY
Cards having a display using a heat reversible recording material are known where it is possible to repeatedly write the information. Such a card is referred to as "Rewrite Card". Usually, a rewrite layer is formed on a base material consisting of polyethylene, aluminum, etc. After a protecting layer is formed on the rewrite layer, the prescribed design will be printed in an area (hereafter referred to as "Non-Display") from which the display is removed. The card is made in the above method.
Such cards have a gap of several microns or so between a non-display section where the prescribed design is printed and a display section where the design is not printed. That is, the display is more concave than the non-display. For this reason, the contact of the thermal head is incomplete in the vicinity of the boundary (hereafter referred to as "Edge") between the two sections. As a result, a problem occurs in that a heat gradient is generated when information is written or erased in the display. That is, there was a problem in that the printing quality of the edge is low while the printing quality of the display is high in the vicinity of the center.
Also, when such cards reach the limits of the frequency in use of their displays, it is necessary to replace the cards themselves with new ones. Accordingly, the replacement poses a problem in that the economic burden becomes heavy.
DISCLOSURE OF INVENTION
The first invention is a card where a band-shaped heat reversible recording medium is attached to the specified bonding position, and is characterized by a bonding position on the back of the face where a contact for semiconductor devices is provided, i.e., is in a position away from an area corresponding to this contact, a magnetic stripe area or a back area corresponding to this magnetic stripe area, and a back area corresponding to an embossment.
In the first invention, a band-shaped heat reversible recording medium is attached to the bonding position of a card and the display is convex from the surface of the card. Therefore, it is possible to better the contact between the display and the thermal head of the card reader-writer, particularly when the card is convex at the specified height even if the card is deformed, it will be possible to do so. Also, a flat face is selected by specifying the above bonding position. Accordingly, it is possible to prevent a gap from being formed between the display and the thermal head. In addition, display functions can be added freely in cards without any change of these cards which are presently in widespread use.
The second invention is characterized in that the bonding position of heat reversible recording media abuts the back area corresponding to the contact for semiconductor devices and extends along the longitudinal direction of the card in the card of the first invention.
In the second invention, it is possible to reduce the difference between the bias quantity of the contact for semiconductor devices of cards and that of band-shaped heat reversible recording media by further specifying the bonding position of these media.
The third invention is characterized by the heat reversible recording medium having a heat reversible recording layer on an upper layer of a base material and an adherent bonding layer on a lower layer of the base material in the card of the first invention, and wherein the heat reversible recording medium is attached to the flat bonding face
REFERENCES:
patent: 5471044 (1995-11-01), Hotta et al.
Koshida Yoshinori
Oda Takahiro
Tanabe Shusaku
Frank Robert J.
OKI Electric Industry Co., Ltd.
Voorhees Catherine M.
Yaminitzky Marie
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