Patent application number | Description | Published |
20100166468 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first image carrying member for carrying a first toner image; a second image carrying member for carrying a second toner image in a maximum amount, of the second toner image carried on the second image carrying member, larger than a maximum amount of the first image carried on the first image carrying member; a first transfer member for electrostatically transferring the first toner image onto a transfer medium in a first transfer nip formed by bringing the transfer medium into contact with the first, image bearing member; and a second transfer member for electrostatically transferring the second toner image onto the transfer medium in a second transfer nip formed by bringing the transfer medium into contact with the second bearing member so that a length of the second transfer nip with respect to a movement direction of the transfer member is longer than a length of the first transfer nip with respect to the movement direction. | 07-01-2010 |
20110103811 | IMAGE FORMING APPARATUS - An image forming apparatus includes a photosensitive member; an exposure device for exposing to light the photosensitive member to form an electrostatic latent image by using exposure image data for an output image to which an information image to be formed so as to be made difficult to be visually recognized with respect to background color has been added; developing portion for developing the electrostatic latent image with color toner into a color toner image; a transparent toner image forming portion for forming a transparent toner image located on the color image on a recording material; and an image processing portion for generating the exposure image data so that a toner amount of the information image on which the transparent toner image is superposed is less than that of the information image on which the transparent toner image is not superposed. | 05-05-2011 |
20110305473 | IMAGE HEATING APPARATUS - An image heating apparatus includes a rotatable belt member for heating an image on a recording material; a rotatable member pressing against said belt member; a nip forming member, provided inside said belt member, for cooperating with said rotatable member to form a nip for nipping and feeding the recording material; a projection provided on a side of said nip forming member near the nip and projecting toward the nip; and an executing portion for executing a first image heating mode operation in which an image formed on the recording material having a first thickness with said projection projected into a nip region and a second image heating mode operation in which an image formed on the recording material having a second thickness which is smaller than the first thickness with said projection is outside the nip region. | 12-15-2011 |
20120107002 | IMAGE FORMING APPARATUS - In an image forming apparatus including an image forming unit which forms an image in which toner containing a wax is used on a recording material, and a fixing device which heats the toner image formed on the recording material at a nip portion which nips and conveys the recording material, when the fixing device heats the recording material on which a toner image having a toner maximum carrying amount of toner is formed, when a temperature of a surface of the toner layer reaches a temperature at which an endothermic amount indicates a peak in a relationship between a temperature of the toner and the endothermic amount, a condition of the fixing device at the nip portion is set so that a temperature of an interface between the toner and the recording material is lower than a temperature of a surface of the toner. | 05-03-2012 |
20120163870 | IMAGE FORMING APPARATUS - In order to output a print with high gloss uniformity, a transparent toner is consumed in a large amount. For that reason, when a constitution of a color developing device and a constitution of a transparent developing device are made substantially identical, a charge amount of the transparent toner is lowered with continuous image formation. In a state in which the transparent toner is not sufficiently charged, an electrostatic image formed on a photosensitive member cannot be sufficiently developed with the toner. | 06-28-2012 |
20130089349 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit that forms an unfixed toner image on a recording material and a fixing unit, wherein, in a case where an image is formed by using the toners of the plurality of colors, when a specific gravity of the toners is ρ (g/cm | 04-11-2013 |
20130170849 | IMAGE FORMING APPARATUS - When an unfixed toner image is formed on a recording material, a toner amount per unit area satisfying: A<(ρΠL)/30√3 when a specific gravity of a toner is ρ (g/cm | 07-04-2013 |