公开(公告)号：US20040090518A1

公开(公告)日：2004-05-13

申请号：US10692479

申请日：2003-10-24

Applicant: Agfa-Gevaert N.V.

Inventor： Eric Kaerts ,  Ivan Hoogmartens ,  Geert Defieuw

IPC: B41J002/335

CPC classification number: B41J2/33545 ,  B41J2/3357

Abstract: A thermal head printer for printing but not perforating a substantially light-insensitive thermographic material, the thermal printer comprising: a transport system having a transport direction, n thermal heads, where n is an integer, each of the thermal heads comprising an array of substantially rectangular energizable heating elements, the heating elements having a length Ln in the transport direction and a pitch Pn between adjacent heating elements, and a means for supplying electrical energy to each of the substantially rectangular energizable heating elements in at least one of the thermal heads, the transport system being capable of transporting the light-insensitive thermographic material in contact or proximity with at least one of the thermal heads, wherein at least one of the thermal heads comprises heating elements for which Ln/Pn is between 0.25 and 0.88; a first process for printing a substantially light-insensitive thermographic material with the above-described thermal head printer; a second process for printing a substantially light-insensitive thermographic material at different printing speeds with a thermal head comprising heating elements without significant variation in image tone, wherein the length of the heating elements in the transport direction of the substantially light-insensitive thermographic material decreases with decreasing printing speed; and a third process for printing a substantially light-insensitive thermographic material at different printing speeds with a different thermal head at each printing speed without significant variation in image tone, wherein each of said different thermal heads comprises heating elements with a different length in the transport direction of the substantially light-insensitive thermographic material and the length of the heating elements in the transport direction of the substantially light-insensitive thermographic material decreases with decreasing printing speed.

公开(公告)号：US20030054958A1

公开(公告)日：2003-03-20

申请号：US10107378

申请日：2002-03-27

Applicant: AGFA-GEVAERT

Inventor： Johan Loccufier ,  Geert Defieuw ,  Ivan Hoogmartens

IPC: B41M005/24

CPC classification number: G03C1/4989 ,  G03C1/49827

Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 3,4-dihydroxybenzene compound in thermal working relationship therewith and a binder, wherein the 3,4-dihydroxybenzene compound is an aryloxo-3,4-dihydroxybenzene compound in which the aryl-group is substituted with at least one substituent having a nullm-value greater than 0; or a heteroaryloxo-3,4-dihydroxybenzene compound in which the heteroaryl group has a unified aromaticity index IA greater than 53 and is optionally substituted with at least one group selected from the group consisting of aryl, hydroxy, carboxy, sulfo, sulfoalkyl, sulfoaryl, sulfonylalkyl, sulfonylaryl, annulated aryl, annulated heteroaryl, carboxyalkyl, carboxyaryl, oxoalkyl, oxoaryl, halogen, nitro, cyano and mercapto-alkyl groups; and a thermographic recording process therefor.

Abstract translation: 包含热敏元件和载体的单片黑色和白色基本上不光敏感的热敏成像记录材料，所述热敏元件含有基本上不光敏的有机银盐，与其热处理的3,4-二羟基苯化合物和粘合剂，其中 3,4-二羟基苯化合物是芳氧基-3,4-二羟基苯化合物，其中芳基被至少一个Sigmam值大于0的取代基取代; 或杂芳基氧-3,4-二羟基苯化合物，其中杂芳基具有大于53的统一芳香族指数IA，并且任选被至少一个选自芳基，羟基，羧基，磺基，磺基烷基，磺基芳基 磺酰基烷基，磺酰基芳基，环状芳基，环状杂芳基，羧基烷基，羧基芳基，氧代烷基，氧代芳基，卤素，硝基，氰基和巯基 - 烷基; 及其热成像记录方法。

公开(公告)号：US20030186809A1

公开(公告)日：2003-10-02

申请号：US10183261

申请日：2002-06-26

Applicant: AGFA-GEVAERT

Inventor： Philip Dooms ,  Ivan Hoogmartens ,  Geert Defieuw

IPC: B41M005/30

CPC classification number: B41M5/28 ,  G03C1/49827 ,  G03C1/4989

Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing one or more substantially light-insensitive organic silver salts, one or more reducing agents consisting of one or more 1,2-dihydroxybenzene-compounds in thermal working relationship therewith and a binder, wherein the molar ratio of molar hydroxy-equivalents of the 1,2-dihydroxybenzene compounds to molar silver-equivalents of the substantially light-insensitive organic silver salts is between 1.2 and 6.0; the 1,2-dihydroxybenzene-compounds have a null(CHnullCH)nR group in the 4 position wherein n is zero or an integer and R is a substituent with a Hammett nullp constant >0.35 and

Abstract translation: 包含热敏元件和载体的单片黑色和白色基本上不光敏感的热敏成像记录材料，所述热敏元件含有一种或多种基本上不光敏的有机银盐，一种或多种由一种或多种1,2-二羟基苯 - 与热处理关系的化合物和粘合剂，其中1,2-二羟基苯化合物的羟基当量的摩尔比与基本上不光敏的有机银盐的银当量的摩尔比在1.2和6.0之间; 1,2-二羟基苯化合物在4位具有 - （CH = CH）nR基团，其中n为0或整数，R为具有Hammett sigmap常数> 0.35且<0.95不包括羧基的取代基 ; 并且1,2-二羟基化合物的苯环任选进一步被选自烷基，取代的烷基，烯基，芳基，杂芳基，烷氧基，硫代烷基，芳氧基，硫代芳基，硫代杂芳基，酰氧基， 硫代酰基，酰氨基，磺酰胺基和卤素基团，芳基环系统和环状杂芳基环系统; 及其热成像记录方法。

公开(公告)号：US20030064891A1

公开(公告)日：2003-04-03

申请号：US10106172

申请日：2002-03-26

Applicant: AGFA-GEVAERT

Inventor： Johan Loccufier ,  Geert Defieuw ,  Ivan Hoogmartens

IPC: B41M005/30

CPC classification number: G03C1/4989 ,  G03C1/49827 ,  G03C1/49845

Abstract: A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxyphenyl-compound in thermal working relationship therewith and a binder, wherein said 1,2-dihydroxyphenyl-compound is represented by formula (I): R1SO2R2, wherein R1 is an optionally substituted aryl group and R2 is selected from the group consisting of a 3,4,5-trihydroxyphenyl group, a 3-alkoxy-4,5-dihydroxyphenyl group and a 3-aryloxy-4,5-dihydroxyphenyl group; or said 1,2-dihydroxyphenyl-compound is represented by formula (II): R3COOR4, wherein R3 is a 3-alkoxy-4,5-dihydroxyphenyl group or a 3-aryloxy-4,5-dihydroxyphenyl group; and R4 is an alkyl group or an aryl group; and a thermographic recording process therefor.

Abstract translation: 包含热敏元件和载体的单片黑色和白色基本上不光敏感的热敏成像记录材料，所述热敏元件含有基本上不光敏的有机银盐，与其热处理的1,2-二羟基苯基化合物和粘合剂， 其中所述1,2-二羟基苯基化合物由式（I）表示：R1SO2R2，其中R1是任选取代的芳基，R2选自3,4,5-三羟基苯基，3-烷氧基 -4,5-二羟基苯基和3-芳氧基-4,5-二羟基苯基; 或所述1,2-二羟基苯基化合物由式（II）表示：R3COOR4，其中R3是3-烷氧基-4,5-二羟基苯基或3-芳氧基-4,5-二羟基苯基; 且R 4为烷基或芳基; 及其热成像记录方法。