发明授权
- 专利标题: Thermochromic drawing device
- 专利标题(中): 热变色拉丝装置
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申请号: US065549申请日: 1993-05-20
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公开(公告)号: US5441418A公开(公告)日: 1995-08-15
- 发明人: William E. Brown , Charles W. Dietterich , Richard M. Mandle
- 申请人: William E. Brown , Charles W. Dietterich , Richard M. Mandle
- 申请人地址: PA Easton
- 专利权人: Binney & Smith Inc.
- 当前专利权人: Binney & Smith Inc.
- 当前专利权人地址: PA Easton
- 主分类号: B41M5/28
- IPC分类号: B41M5/28 ; G09B11/00
摘要:
A thermochromic drawing device is disclosed which can be marked and erased by selectively changing the temperature of its drawing surface. The drawing surface of the drawing device consists of a flexible substrate printed with thermochromic inks having at least two color states. The flexible substrate has low thermal mass thereby enabling it to readily assimilate temperatures induced by a user and, consequently, facilitating the transition of the thermochromic inks from one color state to another. The drawing surface is further provided with an insulating layer which isolates the flexible substrate from unwanted heat sinks and heat sources thereby preventing unwanted color transitions of the thermochromic inks. Thus, a user can selectively change the color state of portions of the drawing surface to create distinctive markings.
公开/授权文献
- US5992765A Mechanical break-up for spray actuator 公开/授权日:1999-11-30
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