摘要:
Thermographic composition comprising a leuco dye, a nitrate salt, and, optionally, an acid and stabilizing compound. The leuco dye contains a phenazine nucleus with naphthoyl substitutents on the 10-position and, optionally on one or both of the 3- and 7-positions through an amino group.In their oxidized form, the leuco dyes of this invention provide access to a range of red and magenta colors which exhibit greater stability when subjected to light and temperatures characteristic of the stage of overhead projectors than that exhibited by previously available leuco dyes of this color range.
摘要:
A composition suitable for an ink-jet receptive layer comprising from about 1% to about 10% of at least one carboxylic acid having a pKa of from about 2 to about 6, said acid being selected from the group consisting of aryl monocarboxylic acids, aryloxy monocarboxylic acids, alkyl carboxylic acids having alkyl groups containing at least about 11 carbon atoms, dicarboxylic acids, tricarboxylic acids and pyridinium salts, and at least one liquid-absorbent polymer comprising from about 90% to about 99% aprotic constituents, and a transparent sheet suitable for making visual transparencies having a film backing having such ink-receptive layer coated on at least one major surface thereof.
摘要:
An input conveyor, output conveyor, and knife assembly with a blade between the input and output conveyors all reciprocate back and forth as a blade moves perpendicular to the conveyors to cut portioned sized of product, such as ground meat. The cut cycle allows the product feed to keep moving in a continuous manner on conveyors. For ground meat, this system can allow production rates of 150 pieces or more per minute per conveyor line and can improve the accuracy of portioning. The blade is actuated by a profiled cam set that pulls the blade down, and then returns it with a spring to an upper position. The knife assembly can accelerate just after cutting to reduce the potential for sticking to the cut product.
摘要:
An improved ink-receptive sheet comprising a substrate bearing on at least one major surface thereof an ink-receptive layer which comprises at least one ink receptive polymer and an effective amount of polymeric mordant having the general structure: ##STR1## wherein A is selected from the group consisting of a COO-alkylene group having from 1 to about 5 carbon atoms, a CONH-alkylene group having from 1 to about 5 carbon atoms, --COO--(CH.sub.2 CH.sub.2 O).sub.n --CH.sub.2 --, --CONH--(CH.sub.2 CH.sub.2 O).sub.n --CH.sub.2 -- and .paren open-st.CH.sub.2 CH.sub.2 NH.sub.2 Cl.paren close-st.n, wherein n is from 1 to about 5;E and D are independently selected from the group consisting of alkyl group having from 1 to about 5 carbon atoms;or A, E, D and N are combined to form a heterocyclic compound selected from the group consisting of ##STR2## R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, phenyl, and an alkyl group containing from 1 to about 5 carbon atoms;R is selected from the group consisting of hydrogen, phenyl, benzimidazolyl, and an alkyl group containing from 1 to about 5 carbon atoms, y is selected from 0 and 1, and X.sub.1 and X.sub.2 are anions.
摘要:
A layer for preventing sticking of thermal image-forming materials to thermal printheads during thermal printing. The layer comprises polymeric material having a non-cyclic, substantially completely saturated hydrocarbon backbone, said backbone having substantially only hydrogen atoms and methyl groups attached to randomly positioned carbon atoms thereon, with no more than one methyl gorup attached to any one backbone carbon atom. Application of the anti-stick layer to the substrate is facilitated by the solubility of the polymeric material in commonly used organic solvents, thereby allowing very thin layers of the coating to be applied in the form of dilute solutions.
摘要:
The present invention provides for a photo display system having a decorative frame, an imaged transparency disposed on the decorative frame and a diffuser film disposed on the imaged transparency. The photo display system also has a base having a means for mounting the decorative frame and a means for attaching a diffuse reflector. The diffuse reflector is disposed behind the decorative frame as viewed from the imaged transparency side of the photo display system.
摘要:
A receptor medium with a sheet having an optically transmissive microembossed imaging surface as one major surface thereof. The receptor medium can receive jettable materials, which include inks, adhesives, biological fluids, chemical assay reagents, particulate dispersions, waxes, and combinations thereof. The microembossed medium unexpectedly solves such common inkjet printing problems as feathering, banding, and mudcracking in inkjet printing systems by controlling how an inkjet drop contacts and dries on an inkjet receptor medium and also Moire' effects but also provides sufficient optical transmissivity to be useful as overhead transparency media, backlit signage, and the like. Clear lines of demarcation between adjoining colors of a pigmented inkjet image graphic can be obtained without creation of the Moire' effects. Methods of making and using the inkjet receptor medium are also disclosed.
摘要:
An improved ink-receptive sheet comprising a substrate bearing on at least one major surface thereof an ink-receptive layer which comprises at least one ink receptive polymer and an effective amount of polymeric mordant having the general structure: ##STR1## wherein A is selected from the group consisting of a COO-alkylene group having from 1 to about 5 carbon atoms, a CONH-alkylene group having from 1 to about 5 carbon atoms, --COO--(CH.sub.2 CH.sub.2 O)n--CH.sub.2, --CONH--(CH.sub.2 CH.sub.2 O)n--CH.sub.2 -- and .paren open-st.CH.sub.2 CH.sub.2 NH.sub.2 Cl.paren close-st.n, wherein n is from 1 to about 5; E and D are independently selected from the group consisting of alkyl group having from 1 to about 5 carbon atoms; or A, E, D and N are combined to form a heterocyclic compound selected from the group consisting of ##STR2## R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, phenyl, and an alkyl group containing from 1 to about 5 carbon atoms; R is selected from the group consisting of hydrogen, phenyl, benzimidazolyl, and an alkyl group containing from 1 to about 5 carbon atoms, y is selected from 0 and 1, and X.sub.1 and X.sub.2 are anions.
摘要:
3,7-Diamo phenazine dye having at least one electron-withdrawing substituent on at least one of the groups attached to the amine groups at the 3- and 7-positions, provided that the algebraic sum of the para position Hammett sigma (.rho..sub.p) values for the groups attached to the nitrogen atoms of the amine groups at the 3- and 7-positions is more positive khan about -0.6. The group containing the electron-withdrawing substituent can be selected from(1) a substituted alkyl group, and(2) a substituted aryl group.
摘要:
3,7-Diamino phenazine leuco dyes stabilized in the 10-position with acyl substituents, said acyl substituents being themselves substituted with electron withdrawing groups. The structure of the reduced form of the dye can be represented by the general formula: ##STR1## wherein R.sup.1 represents a member selected from the group consisting of aryl groups having up to 14 carbon atoms and containing from 1 to 5 electrons withdrawing substituents, alkyl groups having up to 4 carbon atoms and containing one or more electron withdrawing groups, certain electron withdrawing groups containing a ##STR2## moiety, and certain electron withdrawing groups containing a --NH-- moiety. These dyes are suitable for use in thermographic imaging systems wherein the leuco dye is in a composition containing a nitrate salt.