CA2149947C - Systeme thermosensible et mode d'utilisation connexe - Google Patents

Systeme thermosensible et mode d'utilisation connexe Download PDF

Info

Publication number: CA2149947C
Authority: CA; Canada
Prior art keywords: chromogenic; heat; coating; image; localized
Prior art date: 1995-05-23
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired - Fee Related

Application number

CA 2149947

Other languages

English (en)

Other versions

CA2149947A1 (fr

Inventor

John C. H. Chang

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Wallace Computer Services Inc

Original Assignee

Wallace Computer Services Inc

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1995-05-23

Filing date

1995-05-23

Publication date

2002-04-16

1995-05-23 Application filed by Wallace Computer Services Inc filed Critical Wallace Computer Services Inc

1995-05-23 Priority to CA 2149947 priority Critical patent/CA2149947C/fr

1996-11-24 Publication of CA2149947A1 publication Critical patent/CA2149947A1/fr

2002-04-16 Application granted granted Critical

2002-04-16 Publication of CA2149947C publication Critical patent/CA2149947C/fr

2015-05-23 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

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238000012549 training Methods 0.000 description 1
230000000007 visual effect Effects 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
239000012463 white pigment Substances 0.000 description 1
239000002023 wood Substances 0.000 description 1
239000011787 zinc oxide Substances 0.000 description 1

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/337—Additives; Binders
- B41M5/3375—Non-macromolecular compounds
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/142—Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Heat Sensitive Colour Forming Recording (AREA)
Printing Methods (AREA)

CA 2149947 1995-05-23 1995-05-23 Systeme thermosensible et mode d'utilisation connexe Expired - Fee Related CA2149947C (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA 2149947 CA2149947C (fr)	1995-05-23	1995-05-23	Systeme thermosensible et mode d'utilisation connexe

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA 2149947 CA2149947C (fr)	1995-05-23	1995-05-23	Systeme thermosensible et mode d'utilisation connexe

Publications (2)

Publication Number	Publication Date
CA2149947A1 CA2149947A1 (fr)	1996-11-24
CA2149947C true CA2149947C (fr)	2002-04-16

Family

ID=4155888

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 2149947 Expired - Fee Related CA2149947C (fr)	1995-05-23	1995-05-23	Systeme thermosensible et mode d'utilisation connexe

Country Status (1)

Country	Link
CA (1)	CA2149947C (fr)

1995
- 1995-05-23 CA CA 2149947 patent/CA2149947C/fr not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CA2149947A1 (fr)	1996-11-24

Legal Events

Date	Code	Title	Description
1996-11-19	EEER	Examination request
2005-05-24	MKLA	Lapsed

Publication	Publication Date	Title
US5536046A (en)	1996-07-16	Heat sensitive system and use thereof
US5644352A (en)	1997-07-01	Multicolor heat-sensitive verification and highlighting system
US5401060A (en)	1995-03-28	Document with heat and pressure sensitive chromogentic composition thereon
US6060428A (en)	2000-05-09	Heat-sensitive chromogenic system
US4846502A (en)	1989-07-11	Tamper evident document and use thereof
US5395138A (en)	1995-03-07	Security document verification system with pressure-rupturable microcapsules
US5403039A (en)	1995-04-04	Tamper-resistant article and method of authenticating the same
US4227719A (en)	1980-10-14	Protection system for documents
US5290068A (en)	1994-03-01	Document security method and system
US5826915A (en)	1998-10-27	Method of using thermochromic material on security documents and product
US5344191A (en)	1994-09-06	Hidden entry system and use thereof
EP0326303B1 (fr)	1992-05-20	Sécurité pour images produites par systèmes d'impact
CA1106872A (fr)	1981-08-11	Protection de documents utilisant des couleurs au- dessous de la densite critique du copieur
US5970875A (en)	1999-10-26	Pressure-sensitive tamper evident system
JP2001347745A (ja)	2001-12-18	偽造防止媒体
CA2149947C (fr)	2002-04-16	Systeme thermosensible et mode d'utilisation connexe
CA2163488C (fr)	2001-01-30	Systeme de verification et de mise en valeur de documents utilisant un papier thermographique multicolore
JP4016707B2 (ja)	2007-12-05	像変化機能を有する媒体
JPS62111800A (ja)	1987-05-22	感熱転写シ−ト
JPH036442Y2 (fr)	1991-02-19
JP2000225770A (ja)	2000-08-15	偽造防止方法
JP3295608B2 (ja)	2002-06-24	情報の複合記録方法
JP3042311B2 (ja)	2000-05-15	感圧複写重合体
JPH09183288A (ja)	1997-07-15	偽造防止用シート
JP3876013B2 (ja)	2007-01-31	偽造防止用シート