公开(公告)号：EP0611666B1

公开(公告)日：1997-09-17

申请号：EP93911973.1

申请日：1993-05-07

申请人： HITACHI MAXELL, LTD.

发明人： OSHIMA, Toshio ,  OHIWA, Tsunemi ,  NISHIDA, Masato ,  MATSUMOTO, Taiji ,  ITOH, Akihiko ,  TAKEUCHI, Yoji

IPC分类号： B42D15/10 ,  G06K7/12 ,  G06K19/00 ,  G06K19/18 ,  G06K7/10

CPC分类号： G06K19/06009 ,  B42D25/00 ,  B42D25/23 ,  B42D25/382 ,  B42D25/45 ,  G06K7/12

摘要： There is provided a latent image carrier from which data can be reliably read for a long time. It includes a data storage layer (2) having a latent image pattern formed of fine phosphor paticles dispersed and held on a substrate (4a). When the layer (2) is irradiated with light having a predetermined wavelength, the luminescence from the fine phosphor particles is read as optical information. When irradiated with such light, the surface of the substrate (4a) has a reflectivity of at least 20 %. The data storage layer (2) has a thickness T of 0.5 to 20 νm above the upper surface of the substrate (4a), and a protective sheet (6a) is laminated on the substrate (4a) to cover the data storage layer (2) as a whole.

摘要翻译： 提供潜像载体，数据可以从该潜像载体长时间可靠地读取。 它包括具有分散并保持在基板（4a）上的细磷光体颗粒形成的潜像图案的数据存储层（2）。 当用具有预定波长的光照射层（2）时，来自细磷光体颗粒的发光被读取为光学信息。 当用这种光照射时，基板（4a）的表面的反射率至少为20％。 在基板（4a）的上表面上方0.5〜20μm的数据存储层（2）的基底厚度T和保护片（6a）层叠在基板（4a）上以覆盖数据存储层（2） ）作为一个整体。

公开(公告)号：EP0611666A1

公开(公告)日：1994-08-24

申请号：EP93911973.1

申请日：1993-05-07

申请人： HITACHI MAXELL, LTD.

发明人： OSHIMA, Toshio ,  OHIWA, Tsunemi ,  NISHIDA, Masato ,  MATSUMOTO, Taiji ,  ITOH, Akihiko ,  TAKEUCHI, Yoji

IPC分类号： B42D15/10 ,  G06K7/12 ,  G06K19/00 ,  G06K19/18 ,  G06K7/10

CPC分类号： G06K19/06009 ,  B42D25/00 ,  B42D25/23 ,  B42D25/382 ,  B42D25/45 ,  G06K7/12

摘要： There is provided a latent image carrier from which data can be reliably read for a long time. It includes a data storage layer (2) having a latent image pattern formed of fine phosphor paticles dispersed and held on a substrate (4a). When the layer (2) is irradiated with light having a predetermined wavelength, the luminescence from the fine phosphor particles is read as optical information. When irradiated with such light, the surface of the substrate (4a) has a reflectivity of at least 20%. The data storage layer (2) base thickness T of 0.5 to 20 µm above the upper surface of the substrate (4a), and a protective sheet (6a) is laminated on the substrate (4a) to cover the data storage layer (2) as a whole.

公开(公告)号：EP0700980B1

公开(公告)日：1999-11-17

申请号：EP95912443.9

申请日：1995-03-17

申请人： HITACHI MAXELL, LTD.

发明人： OSHIMA, Toshio ,  YAMADA, Yukinori ,  SAIBARA, Shoji ,  KAMOTO, Takanori ,  NABESHIMA, Tomio

IPC分类号： C09K11/02 ,  C09K11/08 ,  C09K11/78 ,  C09K11/81

CPC分类号： C09K11/7706 ,  C09D11/50 ,  C09K11/02 ,  C09K11/06 ,  C09K11/08 ,  C09K11/7701 ,  C09K11/7708 ,  C09K11/7709 ,  C09K11/7756 ,  C09K11/7769 ,  C09K11/7774 ,  C09K11/7776 ,  C09K11/7777

摘要： A phosphor that emits light having a wavelength different from that of the radiated exciting light, the phosphor comprising ultrafine particles having an average size smaller than the wavelength of the fluorescence emitted therefrom at the maximum luminous intensity or the wavelength of the exciting light at the maximum luminous intensity; a process for producing the phosphor; a composition containing the phosphor; and ink ribbon, fluorescent mark carrier, optical character reader, article sorting system, detection mark and mark-detecting method, each utilizing the phosphor. An example thereof is one represented by the general formula: LnxA1-xPO4, wherein: Ln represents at least one element selected from the group consisting of Nd, Yb and Er; A represents at least one element selected from the group consisting of Y, La, Gd, Bi, Ce, Lu, In and Tb; and x is a number ranging from 0.01 to 0.99.

公开(公告)号：EP0700980A1

公开(公告)日：1996-03-13

申请号：EP95912443.9

申请日：1995-03-17

申请人： HITACHI MAXELL, LTD.

发明人： OSHIMA, Toshio ,  YAMADA, Yukinori ,  SAIBARA, Shoji ,  KAMOTO, Takanori ,  NABESHIMA, Tomio

IPC分类号： C09K11/02 ,  C09K11/08 ,  C09K11/78 ,  C09K11/81 ,  G06K1/12 ,  G06K7/10 ,  G06K7/12 ,  B65G47/48 ,  B65G47/49 ,  B41M5/025

CPC分类号： C09K11/7706 ,  C09D11/50 ,  C09K11/02 ,  C09K11/06 ,  C09K11/08 ,  C09K11/7701 ,  C09K11/7708 ,  C09K11/7709 ,  C09K11/7756 ,  C09K11/7769 ,  C09K11/7774 ,  C09K11/7776 ,  C09K11/7777

摘要： A fluorescent substance of the following general formula:

        Ln X A 1-X PO₄

wherein Ln represents at least one element selected from the group consisting of Nd, Yb and Er; A represents at least one element selected from the group consisting of Y, La, Gd, Bi, Ce, Lu, In and Tb; and X represents a value within the range of 0.01 to 0.99.

公开(公告)号：EP0652529A1

公开(公告)日：1995-05-10

申请号：EP94914617.9

申请日：1994-05-13

申请人： HITACHI MAXELL, LTD.

发明人： NISHIDA, Masato ,  ISHITUKA, Tomoaki ,  OSHIMA, Toshio

IPC分类号： G06K7/00

CPC分类号： G06K7/10594 ,  G06K7/12 ,  Y10S283/901

摘要： A high-reliability optical mark reader for a latent image mark capable of accurately reading code information of a latent image mark. The reader comprises a projector element (4) for projecting onto the surface of the latent image mark (15), which contains a fluorescent substance and has specified information, light having a wavelength for excitation of the fluorescent substance, and a light receiving element (8) for receiving fluorescence emitted from the surface of the latent image mark (15). A range where a latent image mark is readable is defined with an intersection of optical axes of the projector element and the light receiving element as a reference, and a crossing angle (ϑ) of the two optical axes is restricted to 40° or less.

摘要翻译： 一种用于能够准确地读取潜像标记的代码信息的潜像标记的高可靠性光标读取器。 读取器包括：投影仪元件（4），用于投射到包含荧光物质并具有指定信息的潜像标记（15）的表面上，具有用于激发荧光物质的波长的光和光接收元件（ 8）用于接收从潜像标记（15）的表面发射的荧光。 通过投影元件和受光元件的光轴的交点作为基准来定义潜像标记可读的范围，并且两个光轴的交叉角（θ）限制在40°以下。