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1. 发明授权

US5972438A Magnetic recording medium and method of manufacture of same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US5972438A
公开(公告)日：1999-10-26
申请号：US900824
申请日：1997-07-25
申请人： Masayasu Suzuki , Tuyoshi Mochizuki , Hiroshi Kawashima
发明人： Masayasu Suzuki , Tuyoshi Mochizuki , Hiroshi Kawashima
IPC分类号： G06K1/12 , G06K19/06 , B42D107/00 , G11B5/80
CPC分类号： G06K19/06196 , G06K1/125 , G06K19/06187 , Y10S283/901 , Y10S283/904 , Y10S428/90
摘要： A magnetic recording medium is made by applying a coating mixture having magnetic particles dispersed in a binder and drying the coating mixture so as to produce a coding layer containing tamper-proof identifier coding information comprising designed patterns, letters, numerals and bar-code type patterns. Another magnetic layer for recording regular magnetic data can be provided above or below the coding layer. The coding information can neither be read or altered by ordinary magnetic reader. The magnetic recording medium is therefore useful for such applications as shopping cards, pre-paid cards, retail store cards; financial cards including credit cards, insurance cards; travelling cards including transit passes, tickets; and identification cards including passports, birth certificates and other personal identification cards. A method of making such a magnetic recording medium is also presented in which the coating mixture is applied on a non-magnetic base material, and while the coating mixture is still wet, i.e. while the magnetic particles are mobile, suitable coding information is magnetically recorded. The coating mixture is then dried to fixate the identifier coding information in the coding layer to produce fixated coding information which is non-erasable and non-alterable.
摘要翻译：通过将具有分散在粘合剂中的磁性颗粒的涂布混合物涂覆并干燥涂布混合物来制造磁记录介质，以便产生包含设计图案，字母，数字和条形码型图案的防篡改标识符编码信息的编码层。可以在编码层的上方或下方提供用于记录规则磁数据的另一个磁性层。普通的磁性阅读器不能读取或改变编码信息。因此，磁记录介质对于诸如购物卡，预付卡，零售商店卡等应用是有用的; 金融卡包括信用卡，保险卡; 旅行卡包括过境通票，门票; 身份证，包括护照，出生证明和其他个人身份证。还提出了制造这种磁记录介质的方法，其中将涂布混合物施加在非磁性基材上，并且当涂料混合物仍然是湿的时候，即当磁性颗粒是可移动的时，磁性记录合适的编码信息。然后将涂布混合物干燥以固定编码层中的标识符编码信息，以产生不可擦除和不可更改的固定编码信息。

2. 发明授权

US5480685A Method of making a magnetic recording medium comprising two magnetic layers 失效
标题翻译：制造包括两个磁性层的磁记录介质的方法
公开(公告)号：US5480685A
公开(公告)日：1996-01-02
申请号：US165734
申请日：1993-12-10
申请人： Masayasu Suzuki , Tuyoshi Mochizuki , Hiroshi Kawashima
发明人： Masayasu Suzuki , Tuyoshi Mochizuki , Hiroshi Kawashima
IPC分类号： G06K1/12 , G06K19/06 , G11B5/00
CPC分类号： G06K19/06196 , G06K1/125 , G06K19/06187 , Y10S283/901 , Y10S283/904 , Y10S428/90
摘要： A magnetic recording medium is made by applying a coating mixture having magnetic particles dispersed in a binder and drying the coating mixture so as to produce a coding layer containing tamper-proof identifier coding information comprising designed patterns, letters, numerals and bar-code type patterns. Another magnetic layer for recording regular magnetic data can be provided above or below the coding layer. The coding information can neither be read or altered by ordinary magnetic reader. The magnetic recording medium is therefore useful for such applications as shopping cards, pre-paid cards, retail store cards; financial cards including credit cards, insurance cards; travelling cards including transit passes, tickets; and identification cards including passports, birth certificates and other personal identification cards. A method of making such a magnetic recording medium is also presented in which the coating mixture is applied on a non-magnetic base material, and while the coating mixture is still wet, i.e. while the magnetic particles are mobile, suitable coding information is magnetically recorded. The coating mixture is then dried to fixate the identifier coding information in the coding layer to produce fixated coding information which is non-erasable and non-alterable.
摘要翻译：通过将具有分散在粘合剂中的磁性颗粒的涂布混合物涂覆并干燥涂布混合物来制造磁记录介质，以便产生包含设计图案，字母，数字和条形码型图案的防篡改标识符编码信息的编码层。可以在编码层的上方或下方提供用于记录规则磁数据的另一个磁性层。普通的磁性阅读器不能读取或改变编码信息。因此，磁记录介质对于诸如购物卡，预付卡，零售商店卡等应用是有用的; 金融卡包括信用卡，保险卡; 旅行卡包括过境通票，门票; 身份证，包括护照，出生证明和其他个人身份证。还提出了制造这种磁记录介质的方法，其中将涂布混合物施加在非磁性基材上，并且当涂料混合物仍然是湿的时候，即当磁性颗粒是可移动的时，磁性记录合适的编码信息。然后将涂布混合物干燥以固定编码层中的标识符编码信息，以产生不可擦除和不可更改的固定编码信息。

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