Canon Kabushiki Kaisha

Kohzoh Arahara

Toshiya Yuasa

Hiroshi Fukumoto

Noboru Tohyama

Takashi Kai

Toshikazu Ohnishi

Osamu Hoshino

Kenichi Matsumoto

Hiroshi Tanioka

Motokazu Kobayashi

Fumitaka Kan

Norihiko Koizumi

Fumitaka Kan, Deceased

Tetsuro Fukui

Akihiro Mouri

Tadashi Sato

Yoshio Takasu

Kyo Miura

An optical memory medium comprises a heat-resistant sheet a plastic resin layer having an uneven guide groove on the heat-resistant sheet, and an optical recording layer on the plastic resin layer. A method for preparing an optical memory medium comprises forming an uneven guide groove on a plastic resin existing directly or through another layer on a heat-resistant sheet, and laminating an optical recording layer on the surface of the resin layer having said uneven guide groove.

Thin type optical memory medium and method for preparing the same

A method for preparing an optical memory medium having forming an uneven guide groove on a plastic resin existing directly or through another layer on a heat-resistant sheet, and laminating an optical recording layer on the surface of the resin layer having said uneven guide groove.

Preparing optical memory medium by laminating a thermoplastic resin

A method for transferring a viscous substance, including the steps of: providing a viscous substance capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto; disposing the viscous substance between a first electrode and a second electrode; and applying a voltage to the viscous substance plural times, thereby to reduce the adhesiveness of the viscous substance to the first electrode.

Method of transferring viscous substance by applying plural voltages to

A recording material (ink) showing a selective adhesiveness to one of a pair of electrodes applying a voltage to the recording material, is constituted by dissolving an electrolyte in a solvent. The recording material is provided with an improved stability against environmental changes, particularly against a humidity change, if the solvent is at least partly constituted by a reaction product between a ring-opening product of an alkylene oxide R--O.sub.n and glycerin or phenol, wherein R is an alkylene group and n is an integer.

Recording material

An image forming apparatus and method for forming an image includes a recording material which changes its adhesiveness in response to the polarity of the voltage applied thereto. Such a recording material can include negatively or positively changeable or inorganic particles, gas-generating solvents, a substance having a gel or sol state, and a dissociative electrolyte. The recording material is positioned between a pair of electrodes. At least one of the electrodes includes an electroconductive member and a pattern comprising an insulating material disposed on the electroconductive member. A voltage is then applied between the pair of electrodes to attach the recording material to one of the electrodes. Also provided is a pressure applicator for transferring to a transfer-receiving medium the recording material attached to the electrode.

Image forming apparatus and method for applying an adhesive recording

An ink which can cause a change in its adhesiveness by an electrochemical reaction is obtained by impregnating a crosslinked substance such as polyvinyl alcohol with a liquid dispersion medium comprising an organic solvent having a relative dielectric constant of 15 or larger at 25.degree. C. such as ethylene glycol. The ink shows little characteristic change due to drying, etc., and suitably retains its fluidity when left standing in the air for a long period. The ink is supplied with a pattern of energy to be provided with an adhesive pattern, which is then transferred to a recording medium such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the energy pattern applied.

Image recording ink

A method for supplying a viscous substance includes the step of providing a viscous substance having an adhesive characteristic which changes in correspondence to a polarity of a voltage applied thereto. The viscous substance has an adhesive characteristic when no voltage is applied thereto and its adhesiveness is reduced when a voltage is applied thereto. The method further includes the step of supplying the viscous substance between a pair of electrodes at least one of which has a pattern comprising an electroconductive portion and an insulating pattern. The method also includes the step of applying a voltage between the first and second electrodes to thereby attach the viscous substance in an amount which corresponds to the ratio of the area of the electroconductive portion to the area of the insulating portion.

Method and apparatus for transferring an adhesive viscous substance

A method for transferring a viscous substance includes the steps of providing a viscous substance having an adhesive characteristic which changes in correpondence to the polarity of a voltage applied thereto. The viscous substance had an adhesive characteristic when no voltage is applied thereto and its adhesiveness is reduced when a voltage is applied thereto. The method further includes the steps of disposing the viscous substance between first and second electrodes and applying a voltage between the first and second electrodes to thereby substantially attach the entirety of the viscous substance to one of the first and second electrodes.

Method for transferring a viscous substance whose adhesiveness is

An image forming apparatus comprises: an electroconductive substrate; an electroconductive member disposed opposite to the electroconductive substrate; a plate-forming unit for forming an insulating pattern on the electroconductive substrate; a supplier for providing a recording material between the electroconductive substrate and the electroconductive member, the recording material being capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto; and a voltage source for applying a voltage between the electroconductive substrate and the electroconductive member.

Image forming apparatus and image forming method using a negative image

A recording material including at least a liquid dispersion medium and an electrolyte contained therein; the electrolyte providing substantially no halogen ion in the liquid dispersion medium under electrolytic dissociation; the recording material being capable of changing its adhesiveness when imparted with a voltage by means of a pair of electrodes, thereby to selectively adhere to either one of the pair of electrodes.

An image forming method and apparatus is disclosed an ink capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto is provided. The ink is used for image formation by means of an image-forming apparatus with at least a pair of electroconductive members. The residual ink left between the pair of electroconductive members is removed by; and applying a voltage to the residual ink so as to reduce the adhesiveness of the ink disposed on one of the pair of electroconductive members, thereby to remove the ink from the electroconductive member and transfer it to another electroconductive member.

Image forming method and apparatus utilizing a voltage to change the

A printing process using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the printing process, the ink is subjected to a pH change to be provided with an adhesiveness to a desired depth, and the resultant adhesive ink is supplied to a printing plate having a pattern of ink receptibility to form thereon an ink pattern corresponding to the ink receptibility pattern. The ink pattern is then transferred to a transfer-receiving medium such as plain paper to form thereon a recorded image. In the above-mentioned printing process, a uniform thin ink layer can be supplied to the printing plate by chemically regulating the amount of the ink to be supplied.

Printing process using a pH change to transfer a thin layer of ink to a

An image recording method and an image recording apparatus using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the image recording method, the ink is subjected to a pattern of pH change to be provided with an adhesive pattern, which is then transferred to a recording medium, such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the pH change pattern.

Image recording method and apparatus therefor

An ink which can be imparted with an adhesiveness on application of an electric current is obtained by impregnating a crosslinked substance such as guar gum or polyvinyl alcohol compound with a liquid dispersion medium such as water. The ink is supplied with a pattern of energy to be provided with an adhesive pattern, which is then transferred to a recording medium, such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the energy pattern applied. The ink further comprises a buffer action-imparting substance and is excellent in storage stability and stability of performances during a continuous use.

A toner for developing electrostatic latent images is produced by a process comprising the steps of: (a) preliminarily dispersing a monomer composition comprising at least a polymerizable monomer and a colorant in a liquid dispersion medium which is substantially mutually-insoluble with the monomer and contains a fine powdery dispersion stabilizer, thereby to form a liquid dispersion containing the preliminarily dispersed monomer composition; (b) pressurizing the liquid dispersion up to a pressure of 10 kg/cm.sup.2 or above; (c) ejecting the dispersion into a low pressure section to form particles of the monomer composition; and (d) subjecting the particles of the monomer composition to suspension polymerization, thereby to produce toner particles.

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Kawasaki, Japan

Kohzoh Arahara