Thermochromic drawing device

Details Thermochromic drawing device Thermochromic drawing device

1993-05-20

1995-08-15

Borcene, Gene

Education and demonstration

Visual art or craft, artistic adornment, or color training...

Drawing

434408, G09B 1100

Patent

active

054414180

ABSTRACT:
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.

REFERENCES:
patent: 1592148 (1926-07-01), Munn
patent: 1656690 (1928-01-01), Blackburn
patent: 3167444 (1965-01-01), Baumann et al.
patent: 3167445 (1965-01-01), Baumann et al.
patent: 3561269 (1971-02-01), Seitz
patent: 3802945 (1974-04-01), James
patent: 3969606 (1976-07-01), Veach
patent: 4028118 (1977-06-01), Nakasuji et al.
patent: 4142782 (1979-03-01), O'Brian
patent: 4151748 (1979-05-01), Baum
patent: 4176273 (1979-11-01), Fujie et al.
patent: 4425161 (1984-01-01), Shibahashi et al.
patent: 4445787 (1984-05-01), Parker
patent: 4554565 (1985-11-01), Kito et al.
patent: 4590381 (1986-05-01), Mendelson
patent: 4703335 (1987-10-01), Matsushita et al.
patent: 4717710 (1988-01-01), Shimizu et al.
patent: 4720301 (1988-01-01), Kito et al.
patent: 4725462 (1988-02-01), Kimura
patent: 4732810 (1988-03-01), Kito et al.
patent: 4818215 (1989-04-01), Taga
patent: 4820683 (1989-04-01), Vervacke et al.
patent: 4826550 (1989-05-01), Shimizu et al.
patent: 4834500 (1989-05-01), Hilsum et al.
patent: 4853361 (1989-08-01), Satake et al.
patent: 4853362 (1989-08-01), Satake et al.
patent: 4855277 (1989-08-01), Walter
patent: 4855279 (1989-08-01), Ikeda et al.
patent: 4888219 (1989-12-01), Barnes
patent: 4895827 (1990-01-01), Vervacke et al.
patent: 4917643 (1990-04-01), Hippely et al.
patent: 4917948 (1990-04-01), Hotta
patent: 4920991 (1990-05-01), Shibahashi et al.
patent: 4977030 (1990-12-01), Hotta et al.
patent: 5011445 (1991-04-01), Nakasuji et al.
patent: 5049428 (1991-09-01), Kanno et al.
patent: 5073696 (1991-12-01), Patillo et al.
patent: 5079049 (1992-01-01), Kito et al.
patent: 5085607 (1992-02-01), Shibahashi et al.
patent: 5087601 (1992-04-01), Hotta et al.
patent: 5152611 (1992-10-01), Pieper et al.
patent: 5158924 (1992-10-01), Konagaya et al.
patent: 5158926 (1992-10-01), Hotta et al.
patent: 5203702 (1993-04-01), Wilson
patent: 5219625 (1993-06-01), Matsunami et al.
patent: 5219820 (1993-06-01), Morohoshi et al.
patent: 5254382 (1993-10-01), Ueno et al.
patent: 5258350 (1993-11-01), Inoue et al.
patent: 5258353 (1993-11-01), MacDonald et al.
patent: 5260254 (1993-11-01), Hotta et al.
English Translation of Japanese Kokai Patent, HEI 5-50754, Mar. 2, 1993.
English Translation of Japanese Kokai Patent, HEI 5-77551, Mar. 30, 1993.
"Chromicolor", Product Catalogue for Matsui Shikiso Chemical Co., Ltd., 16 pages.
Instructions for Nickelodeon Color Writer.TM. Drawing Screen, copyright 1992, two pages.
English Translation of Japanese Application 3-233917, Aug. 21, 1991.
Englishi Translation of Japanese Application 3-270370, Sep. 20, 1991.
English Translations of Japanese Application 3-305410, Oct. 23, 1991.
English Translation of Japanese Application 3-091133, Mar. 28, 1991.
English Translation of Japanese Application 3-092934, Mar. 29, 1991.
English Translation of Japanese Application 3-092933, Mar. 29, 1991.
English Translation of Japanese Application 3-128439, Apr. 30, 1991.
English Translation of Japanese Kokai Patent, HEI 4-329,993, Nov. 18, 1992.

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