摘要:
A developer contains a silicone oil which has an amine on side chain thereof, a development process comprises arranging a member holding an electrostatic image on the surface and a member for carrying a toner on the surface and a fixing method comprises contacting a toner image on an image-supporting member with a heated roller, said toner image being formed of a toner which contains a silicone oil having an amine on side chain thereof and has an MI of 0.01-10 g/10 min.
摘要:
A method for applying a toner comprising: forming, in a container containing a toner and magnetic particles for application of the toner, a magnetic brush of the magnetic particles; circulating the magnetic particles in the container; and forming a thin layer of the toner electrically charged on the toner carrying member; wherein the magnetic particles have a particle size distribution of 30 wt. % or more in the range of 150 to 200 mesh and 5 wt. % or less of under 250 mesh, and the weight ratio of the toner to the magnetic particles is from 5:95 to 50:50 in the region where the magnetic brush is formed.
摘要:
A method for applying a toner comprising: forming, in a container containing a toner and magnetic particles for application of the toner, a magnetic brush of the magnetic particles; circulating the magnetic particles in the container; forming a thin layer of the toner electrically charged on the toner carrying member, wherein the magnetic particles have been treated with a substance A having a position opposite to that of the toner in the triboelectric series with the material constituting at least the surface of the toner carrying member as the standard substance and with a substance B having a position between the substance A and the toner in the triboelectric series.
摘要:
A thin layer of triboelectrically charged toner for developing an electrostatic latent image is formed by forming a magnetic brush of magnetic particles in a container containing the toner and the magnetic particles, and circulating the magnetic brush in the container on a toner carrying member. In this case, a uniform layer of toner adapted for development is obtained, if the magnetic particles have specific shape characteristics such that, where each magnetic particle is assumed to be circumscribed with a rectangular parallelopiped having edge length of a, b and c satisfying a.gtoreq.b.gtoreq.c with the proviso that all of a, b and c are not the same, the average of b/a is from 0.4 to 1.0 and the average of c/a is from 0.4 to 0.95.
摘要:
A method for coating of a developer comprises using a device having a vessel for storing a non-magnetic developer and magnetic particles, a developer holding member which conveys with rotation the non-magnetic developer to a latent image bearing member, a regulating member positioned on the side of the outlet of the above vessel for feeding the non-magnetic developer and arranged on the developer holding member with a gap formed therebetween, and a magnetic pole arranged on the side opposite to the regulating member through the intermediary developer holding member for forming a magnetic brush with the magnetic particles on the upstream side of the regulating member on the developer outlet side of said vessel; andforming a thin layer of the non-magnetic developer on the developer holding member, said magnetic particles having a magnetization of 30 emu/g or higher in the external magnetic field of 5000 oersted.
摘要:
A triboelectrically chargeable composition for use in development of electrostatic latent images. The composition comprises a positively chargeable compound and a base material carrying the positively chargeable compound. The positively chargeable compound has an oxidation potential of 750 mV or below, a whiteness W of 0.5 or above and an average particle size of 5.0 microns or smaller. The composition is embodied typically as a positively chargeable toner and also as a charge-imparting material for charging a toner. The positively chargeable toner is especially adapted for development of digital latent images, e.g., as produced by laser beam scanning.
摘要:
A triboelectrically chargeable composition for use in development of electrostatic latent images. The composition contains a substituted guanidine compound having at least one substituent group. The substituted guanidine compound is preferably one represented by the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different groups including hydrogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkaryl, and heterocyclic groups, of which a hydrogen atom may be further replaced by a substituent group, and at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is a group other than hydrogen. The composition is embodied typically as a positively chargeable toner and also as a charge-imparting material for charging a toner.
摘要:
A storage container of a coating tool can effectively prevent a coating liquid from sticking to a handle member of the coating tool. The storage container for storing the coating tool comprises a holding container for containing the coating tool and a closure member for closing the holding container with the coating tool contained in the holding container. The coating tool is provided with a handle to be used by the user to hold the coating tool, and the closure member is provided with an opening that allows the handle to pass through. When the holding container is closed by means of the closure member with the coating tool stored in the holding container, the handle of the coating tool projects outward through the opening.
摘要:
An ink tank producing a stable negative pressure regardless of material used is provided. In the ink tank, inner and outer walls include a bonding region having a bonding force distribution. With this arrangement, since the inner wall separates from the outer wall as ink in the ink tank is being guided out, the area of a non-bonding region increases.