Konica Corporation

Konica-minolta Holdings, Inc.

Konica Minolta Business Technologies, Inc.

Tomoe Kitani

Asao Matsushima

Masao Asano

Ken Ohmura

Naohiro Hirose

Hiroshi Yamazaki

Hiroyuki Kozuru

Yoshiki Nishimori

Tomoko Tanma

Kenji Hayashi

Hiroyuki Yamada

Takao Yamanouchi

Mikio Kohyama

Tatsuya Nagase

Hirofumi Hayata

Shigeki Takenouchi

Kazuhisa Shida

Ryuji Kitani

Hideo Yoshizawa

Kageyuki Tomoyori

An image forming method is disclosed, comprising (a) forming a toner image on an image forming body, (b) transporting the image forming body to a transfer region, (c) overlapping an image supporting body onto the image forming body, (d) radiating ultrasonic waves onto the image forming body and the image supporting body by an ultrasonic radiation means with applying an electric field between the image forming body and the image supporting body to transfer the toner image onto the image supporting body and (e) subjecting the toner image on the image supporting body to contact heat-fixing to fix the toner image, wherein a toner is comprised of toner particles containing a resin, a colorant and a releasing agent, and the toner particles exhibiting a coefficient of variation of shape factor of not more than 16% and a coefficient of variation of number particle size distribution of not more than 27%.

Image forming method

An image forming method characterized in that a plurality of toner images which differ in color is formed as superposed; a plurality of the superposed toner images is simultaneously transferred onto a sheet of recording paper; the turbidity of toners of each color which form a plurality of the toner images is less than 60; and the maximum turbidity difference among said toners of each color is 5-45.

Image forming method and an image forming apparatus

Disclosed is an image forming method employing an apparatus comprising a plurality of toner image forming units, which forms a plurality of toner images and transfer them onto an intermediate transferring member in sequence, and the transferred images is transferred onto a recording sheet. The developer is a non-magnetic single component toner and turbidity of toners of each color is less than 60; and the maximum turbidity difference among the toners is 5-45.

Method for forming image

A toner comprising a compound represented by the following formula:RO(RO)Hwhere Ris an aliphatic hydrocarbon group having 10 to 22 carbon atoms or a distyrene-substituted phenyl group; Ris an alkylene group having 2 to 6 carbon atoms; and n is an integer of 1 to 15.

Electrostatic image developing toner and image forming method

An image forming method is disclosed. The method includes steps of forming a toner image on an image forming member, transferring the toner image to an image supporting material, by applying an electric field between the image forming member and the image supporting material and irradiating ultrasonic wave to the image forming member and the image supporting material, and fixing the toner image on the image supporting material, and a toner having a volume average particle diameter of from 3 to 8 &#x3bc;m and a content of the toner particle having a diameter of not more than 2 &#x3bc;m being not more than 2% by number is employed.

An image forming apparatus for enabling an image forming which is stable for a long time, by using a charging method in which the amount of generated ozone or nitrogen oxides is reduced and consumed electric power is low. An image forming method includes: a charging section for charging a photoreceptor by contacting on the photoreceptor; an exposure section for forming a static latent image on the photoreceptor by an exposure; a developing section for developing a toner image on the static latent image by a toner having a toner particle which uses a binder resin and a colorant as a component, in which a total quantity of a volatile material measured by a headspace method is 350 ppm or less; and a transfer section for transferring the toner image on a transfer material.

Image forming apparatus and image forming method

An image forming apparatus comprising an electrophotographic photoreceptor to form a toner image by developing an electrostatic latent image with a developer containing a toner and a developing device, in which the photoreceptor contains a charge transport compound having a triphenylamine structure and the developing device supplies a toner having a total content of aromatic volatile compounds of 5 to 30 ppm; an image forming method employing the foregoing electrophotographic photoreceptor and developing device.

The toner for developing an electrostatic image, includes a toner particle containing a binder resin and a colorant. The colorant has Feret's average horizontal diameter from 10 nm to 500 nm, and 50 number % or more of colorant has a Feret's horizontal diameter of from 2 nm to 300 nm. The colorant contains a compound represented by General Formula (1): 

Toner for developing electrostatic image, method for producing the toner and image forming method

An image forming apparatus including: a plurality of image forming units each having at least an electrophotographic photoreceptor, a latent image forming device to form an electrostatic latent image on the electrophotographic photoreceptor, a developing device to develop the electrostatic latent image with toner to form visible toner image on the electrophotographic photoreceptor, a transferring device to transfer the visible toner image onto a toner image receiving member and a cleaning device to remove the toner remaining on the electrophotographic photoreceptor after transferring the visible toner image by the transferring device, wherein the plurality of image forming units are arranged so as to transfer and pile up the visible toner images successively onto said other material to form a toner image, and wherein the toners used in each of the image forming units have different colors and the turbidity of less than 60, and the difference of the turbidity of the toner having the highest turbidity and that of the toner having the lowest turbidity among the toners is 5 to 45.

An image forming apparatus comprising a plurality of image forming units, an intermediate transfer member, and an intermediate transfer member cleaning device to remove toner remaining the intermediate transfer member with plural cleaning blades,

A toner for developing a static latent image is disclosed. The colored resin particle contains a resin and a colorant, and the colored resin particle contains at least two kinds of compound each represented by the following Formula, and total amount is from 1 to 1,000 ppm by weight, wherein, R is an aliphatic hydrocarbon group having from 6 to 22 carbon atoms, M is a monovalent metal atom or an ammonium

Toner for developing static latent image, method for producing toner for developing static latent image

An image forming apparatus includes: four image forming units for black, yellow, magenta and cyan respectively, each image forming unit having at least a developing member; and a photosensitive member on which a toner image is formed with either a black toner, a yellow toner, a magenta toner or a cyan toner of each of developing members, and in which the formed toner image is transferred onto a recording material; wherein turbidity of each of the black toner, the yellow toner, the magenta toner and the cyan toner used in each developing member of the four image forming units is less than 60, maximum difference between the turbidities of the black toner, the yellow toner, the magenta toner and the cyan toner is in a range of 5 to 45, the photosensitive member is an amorphous silicon-based photosensitive member, and the black toner has the turbidity of less than 25.

A toner for developing a static latent image is disclosed. The toner has a number based particle diameter distribution curve in which peak or maximum value is within the range of from 1.0 to 2.0 &#x3bc;m, and ratio of particles having particle diameter of from 1.0 to 2.0 &#x3bc;m is from 0.1 to 5.0% and ratio of particle having a diameter of at least 6.35 &#x3bc;m is 5.0%.

Toner for developing static latent image, producing method thereof and image forming method

A toner for developing a static image is disclosed. The toner has carboxyl group in an amount of from 0.1&#xd7;10to 2.0&#xd7;10moles/g in a condition that the toner particle is dispersed in water, and an amount of a metal element contained in the toner is from 10 to 5,000 ppm by weight based on the toner.

Toner for developing static image, production method therefor and image forming method

An electrostatic image developing toner is disclosed. The toner particle conrains a silanol compound represented by formula of RSi(OH)in an amount of 1 to 20 ppm which is measured based on a head space method: wherein R represents a hydrocarbon group containing an alkyl group, a vinyl group, a glycidyloxy group, or a methacrylic acid, m and n each represents an integer of 1 to 3, and when m is 2 or 3, R may be the same of different.

Growing community of inventors

Hino, Japan

Tomoe Kitani