Abstract: A system is provided for registration of a fluid level of a fluid in the fluid chamber of an invention-specific receptacle (1), in particular of ink in an ink cartridge, with a light source (11) which beams into the chamber of the receptacle, a reflection body (2) which is designed as a float, which moves in the chamber of the receptacle in dependency upon the filling level of the fluid and which variably reflects the light in dependency upon its movement, and a light detector (10) which receives a variable amount of light.

Abstract: Description of a thermo-transfer ribbon having a carrier, with a thermo-transfer color (layer) formed on one side of the carrier, and, if applicable, with additional layers, whereby the thermo-transfer color contains in addition to a coloring substance, an amorphous polymer and a wax. The thermo-transfer ribbon is characterized in that the thermo-transfer color contains a polar polyethylene wax as binding agent and an amorphous polymer, which has a mol mass weight mean Mw of more than approximately 10000 and a numerical mol mass mean Mn of less than approximately 6000. It proves itself during high energy level printing of a thermo-printer as scratch- and solvent-resistant, specifically on plastic labels.

Abstract: Description of a method for printing non-porous surfaces of a substrate with a solvent-containing inkjet ink. Said method is characterized in that a non-porous, varnish-coated surface is printed with an inkjet ink containing a varnish-etching component. High resolution and excellent smudge and scratch resistance can hereby be attained. Beneficial three-color print is possible.

Abstract: Description of an inkset for utilization in inkjet printers, comprising a first ink containing a watery ink medium, a first color pigment dispersed in the ink medium, and optionally, a first dispersing medium, whereby the first color pigment and/or the first dispersing medium carry ionic groups, a second ink containing a watery ink medium, a color substance soluble in the ink medium, whereby the soluble color substance acts as precipitation means for the first color pigment. A first ink containing a watery ink medium, a first color medium dispersed in the ink medium and optionally, a first dispersing medium, whereby the first color pigment and/or the first dispersing medium carry ionic groups, a second ink containing a watery ink medium and a second color pigment and/or, optionally, a second dispersing medium, whereby the second color medium and/or the second dispersing medium act as precipitation agent for the first color pigment.

Abstract: Description of a color ribbon for thermo-sublimation print, comprising a carrier and a color layer formed on the carrier, with a sublimeable coloring substance disperse in a polymer binding agent, whereby a top coat is located on the color layer which contains a water-soluble cellulose ether. The cellulose ether preferably contains C1-C4-alkyl- or C1-C4-alkyl-hydroxyalkyl remnants and is specifically. Methyl-hydroxy-ethyl cellulose. The color ribbon has the advantage that the transferred color substance volume is selectively reduced with low print energies, that inside the ribbon spool there is no unwelcome color substance transfer onto the neighboring loops and that during the printing procedure there is no agglutination between the color layer of the color ribbon and the color receiving layer of the receiver foil.

Abstract: A thermo-transfer ribbon with a carrier, a first thermo-transferable layer formed on one side of the carrier and a second thermo-transferable layer formed on the first thermo-transferable layer, wherein (i) the first thermo-transferable layer contains a luminescent pigment, wax(es) having a melting point of approximately 70 to 110° C. and approximately 1-22% by weight of a polymer wax plasticizer having a glass temperature Tg of −30 to +70° C., (ii) the second thermo-transferable layer contains a non-luminescent pigment, a wax compatible polymer binder and approximately 5 to 30% by weight of wax and/or wax-like substance, (iii) the second thermo-transferable layer has a melting enthalpy DH of approximately 10 to 80 J/g and (iv) in the remission spectrum of the non-luminescent pigment in the wave length range of the light emitted by the luminescent pigment there is a remission maximum or an ascending flank of remission.

Abstract: A description is given of a thermo-transfer ribbon having a customary carrier, with a wax-bonded layer of a thermo-transfer color formed on one side of the carrier, and a resin-bonded separation layer located between carrier and wax-bonded layer, characterized in that at least the resin-bonded separation layer A) contains a wax-soluble polymer and the wax-bonded layer B) of the thermo-transfer color contains less than approximately 8% by weight, specifically 0 to approximately 5% by weight, of wax-soluble polymer, whereby the waxes of the wax-bonded layer B) are narrowly cut waxes with melting- and coagulation points positioned in close proximity to each other. The benefits of said thermo-transfer color consist in that there occur no differences in the quality of the print, either with “cold” or “hot” print, and specifically also on uncoated paper with high degree of roughness.

Abstract: An ink cartridge for a printer includes a casing containing a porous ink storage body. A bottom wall of the cartridge casing has an opening therethrough for communication with a print head. An area of the inside face of the bottom wall around the opening has a plurality of grooves that open to the opening. The area is covered by a sieve against which the porous body is held in contact.

Abstract: The invention provides inkjet print heads, which have one or more components of a polymer material, which is produced, substantially, or with the use of, at least one Compound (I) XaRbSiR1(4−a−b) with X=hydrolyzable group, R=eventually substituted Alkyl, Aryl, Alkenyl, Alkylaryl or Arylalkyl, R1=organic remainder with at least one polymerizable group, a= to 3, b=0 to 2. In addition, the invention provides a process for the manufacture of the heads and for the utilization, for said purpose, of a polymer material.

Abstract: Description of an inkjet printing method, whereby a second and optionally a third and/or additional ink(s) is/are printed on top of each other or immediately next to each other, whereby (i) the first ink contains a coloring substance precipitable by a precipitation reagent, (ii) the first or the second ink contains the precipitation reagent in temporarily passivated form, and (iii) the first, second or third ink contains an activator for the temporarily passivated precipitation reagent, with the proviso that the temporarily passivated precipitation reagent and the activator are not present in the same ink. The method prevents or reduces the problem of mixing or running into each other of two inks at their border lines. The temporarily passivated precipitation agent can be a complexed multi-valent metal ion, which is displaced from the complex by the activator.

Abstract: Description of a thermo-transfer ribbon with a customary carrier having a wax-bonded layer of a thermo-transfer color on one side of the carrier and with a wax-bonded separation layer located between carrier and the wax-bonded layer. The thermo-transfer ribbon distinguishes itself in that the wax-bonded layer B) of the thermo-transfer color contains a wax-soluble polymer and the wax-bonded separation layer A) contains less than approximately 20% by weight of a polymer wax plasticizer and has a glass temperature Tg of −30 to +70° C. The benefits of said thermo-transfer ribbon are based in that the print quality as well as the scratch and solvent resistance are excellent.

Abstract: The printhead has a multitude of adjacently arranged channels with piezo-electrical shear converters. The impulse form for activation of the converters—depending upon the number of simultaneously activated neighboring channels—is changed in such manner that the exit velocity of the ink droplets is constant. This makes it possible to obtain a better print image.

Abstract: The invention provides inkjet print head which has an Anti-wetting Coating of a polymer material, which is produced with the utilization of at least one Compound (I) XaRbSiR1(4-a-b) with X=hydrolyzable group, R=possibly substituted Alkyl, Aryl, Alkenyl, Alkylaryl or Arylalkyl, R1=organic remainder with at least one polymerizable group, a=to 3, b=0 to 2. In addition, a Process for the Manufacture of the Print Heads is made available, as well as a Means for the Coating of same.

Abstract: An ink transfer band has (a) a microporous flexible substrate; (b) one or more optional intermediate layers; and (c) one or more layers of a transfer ink. The ink transfer ribbon is characterized in that the back side of the substrate has a surface roughness depth Rt of at least approximately 400 nm and an average roughness value Ra of at least approximately 40 nm. This transfer ribbon has the advantage of solving in a simple and economical manner the problems related to oil migration and static electricity.

Abstract: Description of an inkjet ink for application in inkjet printers, comprising (a) a solvent, which contains at least 80% of a homopolar, non-watery solvent, (c) one or several phospholipides. In such inkjet inks, the phospholipides have a stabilizing effect. In some applications it may be beneficial with respect to certain pigments to employ an additional dispersant. The inkjet ink has, with concurrent high dispersing stability, significantly improved de-wetting property, with high optical density and excellent storage stability on a nozzle plate of an inkjet print head.

Abstract: Process for re-coding of print heads equipped with electronic codings, whereby the coding of an original print head A is altered in such manner that it is identical to that of another print head B. This is attained by interruption of conductive connections between contacts and the placement of new conductive connections between contacts of the print head A in accordance with the conductive connections of print head B. The re-coding can be designed in reversible as well as irreversible form.

Abstract: The present invention comprises an abrasion-resistant and blocking-resistant hot melt ink, which can be printed at a temperature of approximately 80.degree. C. to 100.degree. C. which includes an adhesion-facilitating substance, a viscosity-facilitating substance and a copolymer of polyvinyl pyrrolidone with one or several long-chain .alpha.-olefins with at least 10 carbon atoms. The ink has excellent adhesion properties with respect to the imprintable material or printing substrate, and withstands normal handling such as folding or bending. Additionally, the present invention includes colored hot melt inks that exhibit improved transparency properties even if the inks are formulated for printing at low temperatures.

Abstract: The ink cartridge comprises a casing closed on all sides, with a face wall having an aperture for receiving a tubular socket of the printing head. The casing contains a foam element impregnated with ink. It has locking elements for engaging arrester means of the printing head, as well as a second smaller aperture for feeding air. An elastomeric foil is provided between the face wall and the foam element, the foil having a hole smaller than the aperture and extending coaxially with the aperture. An edge zone of the smaller hole projects beyond an edge of the aperture and rests sealing against the sockets when the cartridge is inserted.

Abstract: The electrode arrangement (1) consists of a dielectric substrate (2) on which there are several electrodes (4) with terminal leads. A dielectric layer (6) extends over the electrodes (4) over which there is a screening electrode (7) with an aperture (8) for each of the electrodes (4). The arrangement is especially suitable for a contragraphy apparatus. It can be economically produced.

Abstract: The ink reservoir comprises a bottle (1) into which is installed a foil bag (2). The bag (2) is designed at both axial ends as a standing bag. In one end of the bag (2) includes a thermoplastic connector (23) having an elastomer stopper (27) disposed therein. The stopper is piercable by a first hollow needle of the plotter. The connector (23) is snapped into a lid (4) of bottle (2) below a passage opening (44). The lid (4) is snapped onto the bottle (1). Below the lid (4), an absorbent body (3) is installed in the bottle (1) which surrounds the bag. By means of another opening (45) in lid (4) a second hollow needle of the plotter is inserted into the absorbent body (3). The absorbent body serves for acceptance of waste ink. With the described design, one attains simple handling during shipping and installation in the plotter.