摘要:
A liquid developer for electrophotography is disclosed, which comprises a carrier, a charge director contained in the carrier, and toner particles dispersed in the carrier and having a volume-average particle diameter of from 0.5 .mu.m to 5 .mu.m, wherein the toner particles comprises a thermoplastic resin substantially insoluble in the carrier at a temperature used for development, a colorant dispersed in the resin, and a charge control agent. A process for producing the liquid developer, and a process for forming an image are also disclosed. Thereby, a liquid developer for electrophotography having good toner electrification characteristics and satisfactory charge stability is obtained.
摘要:
A liquid developer for electrophotography is disclosed, which comprises a carrier, a charge director contained in the carrier, and toner particles dispersed in the carrier and having a volume-average particle diameter of from 0.5 .mu.m to 5 .mu.m, wherein the toner particles comprises a thermoplastic resin substantially insloluble in the carrier at a temperature used for development, a colorant dispersed in the resin, and a charge control agent. A process for producing the liquid developer, and a process for forming an image are also disclosed. Thereby, a liquid developer for electrophotography having good toner electrification characteristics and satisfactory charge stability is obtained.
摘要:
A liquid developer for electrophotography comprising a carrier liquid having dispersed therein toner particles containing a binder resin and a colorant, wherein said carrier liquid contains at least one ether compound selected from compounds represented by formula (I) and compounds represented by formula (II):R.sub.1 --O(C.sub.n H.sub.2n O).sub.x --R.sub.2 (I)R.sub.3 --O--R.sub.4 (II)wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4, which may be the same or different, each represent an alkyl group, an alicyclic alkyl group, an aryl group, or an aralkyl group; n represents an integer of from 4 to 8; and x represents 1 or 2. The developer requires no heating even in winter and is less vaporized and less dangerous owing to the low solidifying point and low vapor pressure of the carrier liquid. The developer stably exhibits satisfactory charging properties. The developer is suited to high-speed copying.
摘要翻译:一种电子照相用液体显影剂,包括分散有含有粘合剂树脂和着色剂的调色剂颗粒的载体液体,其中所述载体液体含有至少一种选自式(I)表示的化合物和式(II)表示的化合物的醚化合物: R 1 -O(C n H 2n O)x -R 2(I)R 3 -O-R 4(II)其中R 1,R 2,R 3和R 4可以相同或不同,各自表示烷基,脂环族烷基, 芳基或芳烷基; n表示4〜8的整数, x表示1或2.显影剂即使在冬天也不需要加热,并且由于载体液体的低凝固点和低蒸汽压而较少汽化并且不太危险。 显影剂稳定地表现出令人满意的充电特性。 开发人员适合高速复制。
摘要:
A method for forming images including the steps of: developing an electrostatic latent image formed on a latent image carrying member with a liquid developer including a carrier liquid; and bringing a toner image thus formed into contact with an oil absorbent selected from the group consisting of a network-forming oil-absorbent material and a gel-swelling oil-absorbent material, to remove the carrier liquid.
摘要:
A liquid developer for use in electrostatic photography comprises toner particles, each containing a resin and a colorant dispersed in a carrier liquid. The carrier liquid comprises at least one ether compound derived from ethylene glycol or propylene group and represented by the following general formulaR.sub.1 --O(C.sub.n H.sub.2n O).sub.x R.sub.2wherein R.sub.1 and R.sub.2 may be the same or different and represent an alkyl group or an aryl group, n is an integer of 2 or 3, and x is an integer of 1 to 3. The ether compound is present in the carrier liquid in the range of from 5 to 100 wt %.
摘要翻译:用于静电摄影的液体显影剂包括分散在载体液体中的各自含有树脂和着色剂的调色剂颗粒。 载体液体包含至少一种衍生自乙二醇或丙烯基团的醚化合物,由以下通式R 1 -O(C n H 2n O)x R 2表示,其中R 1和R 2可以相同或不同,表示烷基或芳基, n为2或3的整数,x为1〜3的整数。醚化合物以5〜100重量%的范围存在于载体液中。
摘要:
The developer for electrostatic photography according to the present invention comprises toner particles containing a thermoplastic resin and a colorant dispersed in an electrically insulating carrier having a melting point above room temperature wherein the thermoplastic resin is insoluble in the electrically insulating carrier at a temperature below the melting point of the electrically insulating carrier but becomes solvated with the electrically insulating carrier at a temperature above the melting point of the electrically insulating carrier. The present invention provides a developer for electrostatic photography, which enables to reduce the emission of vapor, to carry out a fixing treatment at a higher rate, to reduce the amount of energy required for fixing treatment and to create a high-quality image even after repeated use of the developer.
摘要:
A polyester resin is a polycondensate obtained by reacting a divalent alcohol, a divalent carboxylic acid, and a mono- or divalent rosin by the use of a zinc compound as a reaction catalyst.
摘要:
An electrostatic-image-developing toner is obtained by aggregating: resin particles, each of which has a core-shell structure, in which a difference in glass transition temperature between a resin constituting the core and a resin constituting the shell is about 20° C. or more; and releasing agent particles, each of which includes a polyester block copolymer having a weight-average molecular weight of about 3,000 or less and containing a non-crystalline polyester block containing a cyclic structure in the main chain and a crystalline polyester block containing no cyclic structure in the main chain.
摘要:
An electrostatic image developing toner includes a binder resin that includes a polyester carbonate resin or a polyester amide resin, the polyester carbonate resin or the polyester amide resin containing a dodecenylsuccinic acid unit in an mount from about 0.5 mol % to about 30 mol % as a monomer unit; and a colorant.
摘要:
A resin for an electrostatic-image-developing toner includes a graft polymer, wherein the graft polymer has a polyester structure in the main chain thereof; the graft polymer includes monomer units derived from vinyl monomers in the side chains thereof; and at least a part of the monomer units have a residue of surfactant.