Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
• • 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
  • B41M5/3372—Macromolecular compounds
• • 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
  • B41M5/323—Organic colour formers, e.g. leuco dyes
  • B41M5/327—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
  • B41M5/3275—Fluoran compounds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L50/00—Electric propulsion with power supplied within the vehicle
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
  • G06F3/002—Specific input/output arrangements not covered by G06F3/01 - G06F3/16
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
  • B41M2205/04—Direct thermal recording [DTR]
• • 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
  • B41M5/333—Colour developing components therefor, e.g. acidic compounds
  • B41M5/3333—Non-macromolecular compounds
  • B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
  • B41M5/3336—Sulfur compounds, e.g. sulfones, sulfides, sulfonamides
• • 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

Definitions

• the present invention relates to a heat-sensitive recording material having a web-shaped substrate and at least one heat-sensitive recording layer, disposed on at least one of the two sides of the web-shaped substrate, said heat-sensitive recording layer at least one dye precursor and at least one reactive with this at least one dye precursor (color). )
• a dye precursor in the context of the present invention in all its embodiments proposed here, means that this at least one (color) developer reacts with this at least one dye precursor with sufficient supply of external heat to form a visually recognizable printed image.
• Heat-sensitive and color-responsive to the supply of external heat recording materials have been known for many years and enjoy a basically unbroken popularity, which is due, inter alia, that their use for the ticket and / or vouchers and / or issuing tickets Businessman is associated with big benefits.
• the color-forming components that is, dye precursors and color-responsive developers (also called color acceptors) in such heat-sensitive recording processes are contained in the recording material itself, the toner and color-cartridge-free thermal printers, which are therefore thermally sensitive in their function no longer need to be controlled by anyone regularly, be set up in large numbers.
• this innovative technology has largely prevailed, especially in public transport and retail.
• the reason for the currently unresolved problems lies mostly in the construction of the offset printing presses, where the papers to be printed on so-called Wendench- aggregates are guided so that the paper to be printed first printed on the front side with a large number of printing job units within a press run subsequently also can be printed on the back with a variety of print job works.
• the turnstile units usually have air nozzles that prevent friction, friction and pressure build-up between the rollers of the turnstile aggregates and the paper to be printed.
• this technology is sufficient for light papers, heat-sensitive recording materials having higher basis weights have discoloration in the recording layers due to pressure, friction, and friction in the reciprocating unit. Such restrictions are unacceptable for customers issuing tickets and tickets.
• a web-shaped substrate (1) comprising a front side and a rear side opposite the front side
• said heat-sensitive recording layer (3) contains at least one dye precursor and at least one (color) developer reactive with said at least one dye precursor,
• the novel heat-sensitive recording material is characterized in that the heat-sensitive recording layer (3) arranged on at least one of the two sides of the substrate (1) contains particles (4) having an organic surface whose extension in the direction of the thickness of sheet-like substrate (1 ) and heat-sensitive recording layer (3) is larger than the thickness of the heat-sensitive recording layer (3).
• the particles having the organic surface incorporated in the thermosensitive recording layer act as spacers between the heat-sensitive recording layer and the rollers of the turning cross aggregates in the offset printing machines and prevent the thermosensitive recording layer at least toward the thermal head by forming a pox-like surface effective discoloration in the respective recording layer due to pressure and / or friction and / or friction.
• the protrusions projecting toward the thermal head from the heat-sensitive recording layer otherwise formed are formed by the particles having the organic surface, here referred to as smallpox.
• the organic surface particles preferably in an amount between 0.1% by weight and 1.0% by weight. %, most preferably in an amount between 0.1 wt .-% and 0.5 wt .-%, based on the total weight of the finished heat-sensitive recording layer to incorporate.
• DE 38 28 731 A1 proposes a heat-sensitive recording material with a protective layer, the protective layer comprising polyethylene wax particles having a particle size of from 3 ⁇ m to 10 ⁇ m in a polymeric environment, for example formed from polyvinyl alcohol.
• the thus-formed protective layer is intended to prevent the adhesion of dirt to the thermal head and the sticking of the recording material.
• the heat-sensitive recording material is at least on the side with the heat-sensitive recording layer on its surface as flat and smooth as possible, so that the heat-sensitive recording material can be passed with the shortest possible distance on the thermal head.
• Incorporation of the organic surface particles now increases this distance between the thermal head and the surface of the thermosensitive recording material by protruding from the thermosensitive recording layer, therefore, it is useful to reduce the response of the thermosensitive recording layer due to the increased pitch to the supplied external heat to form a visually recognizable print image by measures that promise to optimize the sensitivity of the proposed heat-sensitive recording material.
• measures are generally considered to be preferred and will be explained in more detail in the course of the present document.
• the particles to be incorporated into the heat-sensitive recording layer have an organic surface.
• This organic surface serves to protect the thermal head using the proposed thermosensitive recording material in a thermal printer.
• heat-sensitive recording materials having in their recording layers for example, inorganic pigments whose thicknesses in the direction of the thickness of web substrate and heat-sensitive recording layer were greater than the thickness of the heat-sensitive recording layer, scratched the surface of the thermo-head, and therefore such proposals for solving the explained and to solving problems are inappropriate and rejected.
• the optimum expansion of the organic surface particle (4) in the direction of the thickness of sheet substrate (1) and heat-sensitive recording layer (3) is in a range of 0.5 ⁇ m to 4 ⁇ m. 0 ⁇ or more precisely in a range of 0.5 ⁇ to 2.0 ⁇ is greater than the thickness of the heat-sensitive recording layer (3), in which these particles (4) are involved, which is why such expansion is considered preferred.
• the particles dome-like toward the thermal head in a preferred range of 0.5 ⁇ to 4.0 ⁇ and most preferably in a range of 0.5 ⁇ to 2.0 ⁇ protrude from the otherwise just executed heat-sensitive recording layer.
• Thickness of the recording layer + 0.5 ⁇ m dome-like protrusion of the particles in the minimum) up to 5.0 ⁇ m ( 3.0 ⁇ m thickness of the recording layer "* ⁇ 2.0 ⁇ m" dome-like protrusion of the particles at maximum)
• Mass of the heat-sensitive recording layer 1, 5 g / m 2 which corresponds to a first approximation of thickness of 1, 5 ⁇ , the particles are organic surface in the most preferred embodiment and spherical shape, a diameter in the range of 2, 0 ⁇ have up to 3.5 ⁇ .
• thermosensitive recording layer (3) Even if, for example elliptical-like shapes for the particles (4) are conceivable with an organic surface, their spherical shape is considered to be particularly preferred in the context of the present invention. At the same time, it is preferred by the inventor that the organic surface particles (4) incorporated in the thermosensitive recording layer (3) all have an equal extension, that is, all the same diameter in the preferred spherical shape. Thus, in the pox-like surface of the heat-sensitive recording layer, it is ensured that neither randomly-tactile nor visually-recognizable randomly-distributed structures can result from larger and smaller dome-like protruding elevations rising from the heat-sensitive recording layer otherwise formed.
• microcapsules in particular air and / or water-filled microcapsules, for example with melamine-formaldehyde-based wall,
• this novel recording material preferably has an interlayer (2) having hollow body pigments positioned between the web-shaped substrate (1) and the at least one heat-sensitive recording layer (3).
• the high importance of the organic hollow body pigments in the intermediate layer (2) is based on the fact that such organic pigments are to a particular extent a high heat reflectivity of the intermediate layer (2) conducive.
• the hollow body pigments have in their interior air, the good Heat insulator represents. The thus optimized as a heat reflection layer intermediate layer (2) increases so far specifically the response of the recording layer (3) to heat.
• the intermediate layer very particularly preferably also inorganic pigments, wherein the inorganic pigments selected from one another individually or in combination from the list comprising: calcined kaolin, silica, bentonite, calcium carbonate and alumina and here especially boehm ,
• the thermal head initiating the color-forming reaction of the dye precursors with the (color) developers in the heat-sensitive recording layer causes the wax-like components in the recording layer to melt.
• the preferred incorporated inorganic pigments of the intermediate layer also cause absorption of this melt.
• the pigments of the intermediate layer has an oil absorption of at least 80 cm3 / 100 g, and more preferably 100 cm3 / 100 g, determined according to the Japanese standard JIS K 5101, have. This requirement is met by the above-mentioned inorganic pigments.
• the amount ratio between the totality of organic pigments and the totality of inorganic pigments within the intermediate layer is a compromise of the effect caused by the two types of pigments, which is particularly advantageously solved if the pigment mixture to 5 to 30 wt .-% or better to 8 to 20 wt .-% of organic and 95 to 70 wt .-% or better to 92 to 80 wt .-% of inorganic pigment.
• Pigment mixtures of different organic and / or different inorganic pigments are conceivable.
• the intermediate layer contains at least one binder preferably based on a synthetic polymer, for example, styrene-butadiene latex provides particularly good results.
• a synthetic binder with the admixture of at least one natural polymer, particularly preferably starch, represents a particularly suitable embodiment.
• a binder pigment Ratio within the intermediate layer between 3: 7 and 1: 9, in each case based on% by weight, a particularly suitable embodiment is present.
• a previously prepared coating color for forming the intermediate layer is applied by means of a leveling brushing method, selected from the list, comprising: Walzenstreichwerk, doctor blade or (roll) doctor blade coating.
• the intermediate layer can make a positive contribution to the leveling of the substrate surface, whereby the amount of applied mass to form the heat-sensitive recording layer is reduced.
• the subsequent drying of the coating color to form the intermediate layer is usually done by supplying heat, as is done by hot-air floating dryer or contact dryer. Also proven is a combination of hot-air floatation dryer and contact dryer.
• a preferred range between 5 and 20 g / m 2 and even better between 7 and 12 g / m 2 has proven.
• thermosensitive recording material preferably has, as a dye precursor in the thermosensitive recording layer, those selected from the list comprising:
• 3-dibutylamino-6-methyl-7-anilinofluoran also known as ODB-2.
• the heat-sensitive recording layer has more than one dye precursor, each selected from the dye precursors listed in the above paragraph.
• thermosensitive recording material proposed herein may contain one or more of the following near infrared absorbing compounds within the thermosensitive recording layer besides or alternatively to the substances exemplified in the preceding paragraph as dye precursors:
• thermosensitive recording layer of the thermosensitive recording material proposed herein is most preferable as the (color) developer
• developing the heat-sensitive recording layer may, alternatively or in addition, one or more (color) have developer, selected from the list comprising: n N- (p-toluensulphonyl) -N '-3- ( p-toluenesulphonyl-oxy-phenyl) urea - also known as Pergafast® 201,
• thermosensitive recording layer of the thermosensitive recording material proposed herein may contain, in order to improve the sensitivity in a preferred embodiment, at least one sensitiser selected from the list, comprising:
• n 1, 2-di (phenoxy) ethane - also known as EGPE n 1, 2-di (phenoxy) ethane - also known as EGPE
• sensitizers are preferably used alone, that is, not in combination with the other sensitisers from the above list, without excluding such a combination in the context of the present invention.
• 1, 2-di (phenoxy) ethane is very particularly preferred.
• Suitable binders for incorporation into the heat-sensitive recording layer are in particular
• Carboxy- or silanol-modified polyvinyl alcohols, n water-insoluble latex binders such as:
• binder in the context of the present invention is the combination of acrylonitrile-butyl acrylate-methacrylate copolymers and methyl acrylate-methacrylamide copolymers.
• the content of the binder in the heat-sensitive recording layer is preferably in a range of 10 to 20% by weight based on the total weight of the heat-sensitive recording layer.
• the heat-sensitive recording layer can furthermore comprise pigments, preferably inorganic pigments such as, for example, aluminum (hydr) oxide, calcium Carbonate and silica (silica), wherein in particular the combination of aluminum hydroxide and silica, which should preferably be incorporated in an amount of 25 to 50 wt .-% in the heat-sensitive recording layer, is considered to be preferred, provided that a particular value on oil absorption capacity should be placed in the heat-sensitive recording layer value.
• pigments preferably inorganic pigments such as, for example, aluminum (hydr) oxide, calcium Carbonate and silica (silica), wherein in particular the combination of aluminum hydroxide and silica, which should preferably be incorporated in an amount of 25 to 50 wt .-% in the heat-sensitive recording layer, is considered to be preferred, provided that a particular value on oil absorption capacity should be placed in the heat-sensitive recording layer value.
• the heat-sensitive recording layer is applied by means of a coating method, selected from the list, comprising: roller blade coater, knife coater, curtain coater or air brush.
• the coating color used to form the recording layer is preferably aqueous.
• the subsequent drying of this coating color is usually done by a method in which heat is supplied, as is done by hot-air floating dryer or contact dryer. Proven is also a combination of the listed dry processes.
• the basis weight of the heat-sensitive recording layer is preferably from 2 to 6 g / m 2, and more preferably from 2.2 to 4.8 g / m 2 .
• the organic surface particles incorporated in the heat-sensitive recording layer protrude dome-like toward the thermal head in a most preferable range of 0.5 ⁇ m to 2.0 ⁇ m from the heat-sensitive recording layer otherwise formed.
• the particles incorporated into the heat-sensitive recording layer thereby produce a pox-like surface of the recording material according to the invention, which serves to protect the recording layer, in particular in offset printing presses, from pressure and friction.
• thermosensitive recording layer does not preclude the respective formation of a protective layer over the at least one heat-sensitive recording layer.
• a coating process which effects a contour line, such as a curtain coater or air brush.
• the particles incorporated in the thermosensitive recording layer are merely provided with another coating, and the finished formed recording material further has a small-pox-like surface to the outside.
• thermosensitive recording material when its web-shaped substrate has a basis weight in a range of 100 g / m 2 to 250 g / m 2 , without limitation.
• paper is considered to be particularly preferred and here especially a non-surface treated base paper.
• a non-surface treated base paper is to be understood as meaning a base paper which has not been treated in a size press or in a coating device.
• films of polypropylene, polyolefin and polyolefin coated papers, for example are also possible as a web-shaped substrate, without such a design having an exclusive character.
• such a recording material may additionally also have a backside coating, for example for improved back-side offset printing.
• An intermediate layer (2) which preferably contains a combination of organic and inorganic pigments, is formed on a web-shaped substrate (1), in particular made of paper with a basis weight in a preferred range of 100 g / m 2 to 250 g / m 2 and with a basis weight in a preferred range of 5 g / m 2 to 20 g / m 2 can make a positive contribution to the leveling of the substrate surface up to the heat-sensitive recording layer (3).
• This heat-sensitive recording layer (3) is located on the intermediate layer (2) and has a basis weight in a preferred range of 2 g / m 2 to 6 g / m 2 , which in a first approximation of a thickness in a range of 2 ⁇ 6 ⁇ corresponds.
• FIG. 1 clearly shows how the particles (4) protrude like a pox out of the heat-sensitive recording layer (3), which is otherwise flat, preferably within a range of 0.5 ⁇ m to 4.0 ⁇ m.
• a web-shaped substrate is on a fourdrinier paper machine from bleached and ground hardwood and softwood pulps with the addition of 0.6 wt .-% (atro) resin size, based on the total solids content (atro) of the paper machine supplied pulp, and under Addition of other conventional additives prepared a base paper with a basis weight of 140 g / m 2 .
• this web-shaped substrate is provided at the front by means of a doctor blade applicator with an intermediate layer of 9 g / m 2 , which completely covers the web-shaped substrate.
• the intermediate layer comprises a pigment mixture of 18% by weight (atro) organic pigment having a particle size (D50) of 1 ⁇ m and 82% by weight (atro) calcined kaolin having a particle size (D50) of 0.9 ⁇ m and an oil absorber - tion of 1 10 cm 3 / 100g.
• the organic pigment has a glass transition value of 105 ° C.
• the intermediate layer further comprises a binder mixture of 75% by weight of styrene-butadiene latex and 25% by weight of starch. The drying of the intermediate layer takes place by means of contact drying by a plurality of drying cylinders.
• thermosensitive recording layer having a thickness of 3.0 ⁇ m is applied to the intermediate layer, using the following formulation as shown in Table 1 to form the thermosensitive recording layer.
• the final drying of the thermosensitive recording layer is effected by a combination of a plurality of drying cylinders of a dryer section associated with the coating machine used, meandering through which the recording material with web-shaped substrate, intermediate layer and heat-sensitive recording layer, and a plurality of hot air flotation dryers.
• Sensitiser 1 2-di (phenoxy) -ethane EGPE 9.4 Component Trade name% by weight (atro)
• a heat-sensitive recording layer is applied with a thickness after drying of 2.5 ⁇ using a roller doctor applicator in a separate coating machine on the intermediate layer, wherein the formation of the heat-sensitive recording layer, the following recipe used in Table 2.
• the final drying of the thermosensitive recording layer is effected by a combination of a plurality of drying cylinders of a dryer section associated with the coating machine used, meandering through which the recording material with web-shaped substrate, intermediate layer and heat-sensitive recording layer, and a plurality of hot air flotation dryers.
• thermosensitive recording layer having a thickness after drying of 2.5 ⁇ applied, wherein the following formulation according to Table 3 is used to form the heat-sensitive recording layer.
• the final drying of the thermosensitive recording layer is effected by a combination of a plurality of drying cylinders of a dryer section associated with the coating machine used, meandering through which the recording material with web-shaped substrate, intermediate layer and heat-sensitive recording layer, and a plurality of hot air flotation dryers.
• Example of air-filled microcapsules under the influence of a heat-emitting thermal head retain their original shape largely unrestricted and thus continue to protrude as originally given from the heat-sensitive recording layer.
• the spherical particles of polyolefin according to the second example according to the invention are slightly fused, but protrude even more clearly as elevations from the otherwise flat recording layer.
• the printing and in particular the passing of the Wendench- aggregates within the used offset printing presses takes place in the samples of Examples 1 and 2 according to the invention absolutely easily, in particular occur when passing the Wendench aggregates no discoloration in the recording layers.

Landscapes

• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• General Chemical & Material Sciences (AREA)
• Optics & Photonics (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Mechanical Engineering (AREA)
• Theoretical Computer Science (AREA)
• Transportation (AREA)
• Power Engineering (AREA)
• Thermal Sciences (AREA)
• Human Computer Interaction (AREA)
• General Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Heat Sensitive Colour Forming Recording (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=52146337

Family Applications (1)

Country Status (7)

Families Citing this family (7)

Family Cites Families (17)

• 2015
  • 2015-01-29 CN CN201580070294.8A patent/CN107107641B/zh not_active Expired - Fee Related
  • 2015-01-29 EP EP15703042.0A patent/EP3237219A1/de not_active Withdrawn
  • 2015-01-29 KR KR1020177020354A patent/KR102387699B1/ko active IP Right Grant
  • 2015-01-29 RU RU2017126009A patent/RU2677706C1/ru active
  • 2015-01-29 WO PCT/EP2015/051865 patent/WO2016102076A1/de active Application Filing
  • 2015-01-29 US US15/538,528 patent/US10202016B2/en active Active
  • 2015-01-29 JP JP2017534741A patent/JP6571778B2/ja active Active
• 2019
  • 2019-04-26 JP JP2019085929A patent/JP2019151116A/ja active Pending

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events