摘要:
A method of forming a toner having controlled properties for use in a developer composition finding particular use in a hybrid scavengeless development scheme includes feeding at least one binder and at least one colorant into a mixing device at a feed ratio, upon exit of the mixture from the mixing device, monitoring one or more properties of the mixture with at least one monitoring device, wherein if the monitoring indicates that the one or more properties being monitored is out of specification, removing the monitored mixture from the method and adjusting the feed ratio by adjusting the feeding of the at least one binder or of the at least one colorant, thereby retaining in-specification mixture in the method. The in-specification toner is ground, optionally together with a portion of one or more external additives, classified, and mixed with one or more external additives to obtain the toner having controlled properties.
摘要:
A toner having a high colorant concentration and a binder resin that includes a polyester resin having linear portions and crosslinked portions of high density crosslinked microgel particles has a melt flow index value of about 11±MFI units. The binder resin may also include a mixture of two polyester resins having different MFI values.
摘要:
Cross-linked toner resin having linear portions and cross-linked portions of high density microgel particles, where the toner resin is an unsaturated polyester resin, is prepared using a liquid chemical initiator such as 1,1-bis(t-butyl peroxy)-3,3,5-trimethylcyclohexane so that the cross-linked resin achieved contains less than 0.20 percent by weight of acids. In particular, the cross-linked toner resin is free of benzoic acid. The method of making the cross-linked toner resin includes (a) spraying the liquid chemical initiator onto the unsaturated polyester resin prior to, during or subsequent to melting of the unsaturated polyester resin to form a polymer melt; and (b) subsequently cross-linking the polymer melt under high shear to form the cross-linked toner resin.
摘要:
A process including: introducing and continuously melt mixing in an extruder a mixture of a first resin feed and a second resin feed; measuring within the extruder the melt rheology of the resulting melt mixture of the first and second resins; determining the relative ratio of the first resin and a second resin from the melt rheology in the resulting melt mixture; and adjusting the relative feed ratio of the first resin and second resin feeds introduced to the extruder.
摘要:
A contact-type film probe including a plastic substrate. Multiple signal lines are arranged on one face of the substrate. A contact conductive layer is disposed at one end of each signal line. The contact conductive layers serve to contact with the wires of the liquid crystal display. The contact conductive layers are made by means of complex electroplating to enhance anti-abrasive ability so that the using life of the contact-type film probe can be prolonged.
摘要:
A toner is disclosed that includes a binder and at least one colorant, wherein the binder includes an amorphous polyester material, a cross-linked polyester material, an optional embrittling agent material, and a crystalline polyester material. The toner may be mixed with a suitable carrier to form a developer.
摘要:
A process involving: collecting waste toner; screening the collected waste toner; melt mixing the screened waste toner with a second toner, and grinding and classifying the melt mixed toner product.
摘要:
A toner composition comprised of resin, pigment, and a mixture of charge enhancing additives comprised of a first additive of distearyl dimethyl ammonium methyl sulfate, and a second additive comprised of a tetraalkyl ammonium bisulfate.