摘要:
A woven belt paper polisher imparts mechanical energy to paper by sliding a woven belt against a paper sheet while the sheet is supported against a shear inducing roll. The contact force, slide distance and the coefficient of friction of the polishing belt result in less polishing material wear, less chance for developing machine direction character on the paper surface, and less chance for machine component damage. The use of an extended belt run outside the polishing section, results in reduced wear, extended uptime, and better polishing surface reconditioning. The use of a commercially produced and modified woven paper machine fabric results in lower operating cost compared to the use of a specialty polishing material.
摘要:
A novel record material is disclosed comprising a substrate bearing microcapsules having nonmeltable walls. The microcapsules contain a chromogen or developer and a photosensitive composition internal thereof, said microcapsules undergoing a change in viscosity upon exposure to actinic radiation. The walls of the microcapsules have an elongation of not more than 1%, and the record material is resistant to heat, measured by not producing any substantial color when placed in a 150.degree. C. oven for one minute. Surprisingly, the record material however is capable of forming a color upon application to the record material of a point source energy input comprising a .DELTA.T of at least 115.degree. C. per one millisecond.
摘要:
Pressure-sensitive and heat-sensitive record materials are described comprising a substrate, an acidic developer and chromogenic di-[bis-(indolyl) ethylenyl]tetrahalophthalides of the formula ##STR1## wherein each X.sup.1, S.sup.2, X.sup.3, and X.sup.4 is independently selected from chlorine or bromine;wherein each of R.sup.1 and R.sup.7 is independently selected from cycloalkyl, aralkyl, alkoxyalkyl, or aroxyalkyl;wherein each of R.sup.2 and R.sup.8 is independently selected from alkyl (C.sub.1 -C.sub.8) or aryl (substituted or unsubstituted);wherein each of R.sup.3, R.sup.4, R.sup.5, R.sup.6,R.sup.9, R.sup.10, R.sup.11, and R.sup.12 is independently selected from hydrogen alkyl (C.sub.1 -C.sub.8), cycloalkyl, aryl (substituted or unsubstituted), halogen, alkoxy (C.sub.1 -C.sub.8), aroxy, cycloalkoxy, dialkylamino including symmetrical and unsymmetrical alkyl (C.sub.1 -C.sub.8), alkylcycloalkylamino, dicycloalkylamino, alkylarylamino, ##STR2##
摘要:
Preparation of novel symmetrical and unsymmetrical chromogenic di-[bis-(indolyl)ethylenyl]tetrahalophthalides is disclosed. Specifically these compounds are chromogenic di-[bis-(indolyl)ethylenyl]tetrahalophthalides of the formula ##STR1## wherein L and X are as hereinafter defined. The process disclosed involves condensing bis(indolyl)ethylenes with tetrahalophthalic anhydride in acetic anhydride, in the presence of an electron acceptor or preferably an acetate of Group I or II of the Periodic Table. Optionally, and preferably, where unsymmetrical di-[bis-(indolyl)ethylenyl]tetrahalophthalides are desired, indoles are reacted with an acylindole in the presence of a Vilsmeier reagent to form the starting bis(indolyl)ethylene.
摘要:
Novel bis-(indolyl)ethylenes, process for their production and record systems utilizing such bis-(indolyl)ethylene chromogens are described.Bis-(indolyl)ethylenes of the following general formula are prepared: ##STR1## wherein each L.sup.1 and L.sup.2 is the same or different and is each independently selected from indole moieties (J1) through (J4) (L.sup.1 need not be the same as L.sup.2), ##STR2## wherein in (J1) through (J4) above, each of R.sup.5, R.sup.6, R.sup.13, R.sup.14, R.sup.21, R.sup.22, R.sup.29 and R.sup.30 need not be the same and is each independently selected from hydrogen, alkyl (C.sub.1 -C.sub.8), cycloalkyl, alkylaroxy, alkylalkoxy, and substituted or unsubstituted aryl, such as phenyl, naphthyl, or heterocyclyl.Each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12, R.sup.15, R.sup.16, R.sup.17, R.sup.18, R.sup.19, R.sup.20, R.sup.23, R.sup.24, R.sup.25, Rphu 26, R.sup.27, and R.sup.28 need not be the same and is each independently selected from hydrogen, alkyl (C.sub.1 -C.sub.8), cycloalkyl, substituted or unsubstituted aryl, halogen, alkoxy (C.sub.1 -C.sub.8), aroxy, cycloalkoxy, dialkylamino including symmetrical and unsymmetrical alkyl groups with one to eight carbon, alkylcycloalkylamino, dicycloalkylamino, ##STR3## wherein Z is hydrogen, alkyl (C.sub.1 -C.sub.8), substituted or unsubstituted aryl, aralkyl, aroxyalkyl, alkoxyalkyl or halogen.
摘要:
A color developer material comprising a homogeneous mixture of a color developer containing a certain weight percent phenolic group, divalent zinc, and an aromatic carboxylate component possessing certain properties. These mixtures are particularly useful as color developer materials for basic chromogenic materials in either pressure-sensitive or heat-sensitive record materials.
摘要:
An improved self-contained record material having tamper resistance through an indicator quality is disclosed. The self-contained record material of the invention is suitable for forming a visible mark with a focussed means of pressure application such as a stylus, needle, or pen and which mark can then later be in part fixed by unfocussed light. The self-contained record material comprises a substrate on which is coated two sets of microcapsules only one of which is made photosensitive to change in viscosity upon exposure to actinic radiation, and the first of which are conventional microcapsules. The color formers in each of the sets of microcapsules are selected to express a different observed color. Original markings, for example, could be black (combination of the orange and blue color formers). After exposure to actinic radiation desensitizing the blue color former containing capsules, subsequent markings are orange indicating the aspect of the subsequence in time.
摘要:
An apparatus and process for foam wrapping pressure sensitive rolls of material in a limited amount of space with a minimum amount of handling of the pressure sensitive rolls. The apparatus includes an intermediate transfer cart and a retractable foam application unit. The intermediate transfer cart operates to receive unwrapped rolls of pressure sensitive material from a winder unit and transport it to a position underneath the foam application unit which custom wraps various widths of pressure sensitive rolls of material from one full width of foam web while providing a driving force to turn the pressure sensitive rolls as foam is being applied thereto.
摘要:
An apparatus and process are disclosed for an efficient decurling system wherein a web material is introduced into a steam environment such that the distance between the web and the steam source is maintained substantially constant.
摘要:
A record member comprising a developer composition comprising a zinc-modified addition product of a phenol and a diolefinic alkylated or alkenylated cyclic hydrocarbon is disclosed. These addition products are particularly useful as color developers for basic chromogenic material.