Patent application number | Description | Published |
20080205946 | IMAGE FORMING APPARATUS AND DEVELOPING DEVICE THEREOF - An image forming apparatus having the improved construction and mounting structure of a device for charging paper to be attached to a paper feed body is disclosed. The image forming apparatus includes a plurality of developing devices and a paper feed body which is mounted opposite to the plurality of developing devices and rotates to feed paper. A sheet member is mounted to a developing device of the plurality of developing devices, which is disposed on an uppermost paper stream side in a feeding direction of the paper. The sheet member charges the paper as it advances to the paper feed body to attach the paper to the paper feed body. The image forming apparatus further includes a voltage transmission part which transmits high voltage to the sheet member. The voltage transmission part includes a conductive fixing member to which an end of the sheet member is fixed, and a voltage transmission plate having a first end portion with a terminal contact portion to contact a terminal mounted in a main body and a second end portion electrically connected to the fixing member. | 08-28-2008 |
20080226367 | WASTE TONER TRANSFER DEVICE, WASTE TONER CLEANING DEVICE HAVING THE WASTE TONER TRANSFER DEVICE, DEVELOPING UNIT HAVING THE WASTE TONER CLEANING DEVICE, AND IMAGE FORMING APPARATUS - A waste toner transfer device of an image forming apparatus includes a waste toner transfer unit which is disposed in proximity to a cleaning member to transfer waste toner removed from a photoconductive medium by the cleaning member, and includes a plurality of protrusions at one end, a driving unit which horizontally reciprocates the waste toner transfer unit, and a plurality of ribs which constrain the plurality of protrusions when the waste toner transfer unit moves, so that the waste toner transfer unit vibrates vertically. | 09-18-2008 |
20080232851 | Image developing apparatus and image forming apparatus using the apparatus - An image developing apparatus includes an upper case; a lower case disposed on a lower side of the upper case, and internally housing a developing agent, and having an opening. A photoconductive drum is disposed on the upper case for forming an electrostatic latent image on a surface thereof. A charging roller is disposed on one side of an outer circumference of the photoconductive drum for charging the photoconductive drum. A developing roller having one part is exposed through the opening of the lower case to cooperate with the photoconductive drum for developing the electrostatic latent image. A scattering preventing unit disposed between the photoconductive drum and the developing roller, to prevent scattering of the developing agent supplied by the developing roller. The scattering preventing unit includes a blocking curtain which covers a part of the opening and having one side in contact with the outer circumference of the photoconductive drum. A fixing bracket is provided for supporting the blocking curtain. | 09-25-2008 |
20080240814 | DEVELOPING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing unit includes a waste toner housing having an upper housing and a lower housing which face each other, at least one support unit to allow connection between the upper and lower housings, and to support facing surfaces of the upper and lower housings, and a toner housing which is disposed on a lower part of the waste toner housing and is spaced apart from the waste toner housing at a predetermined distance. Accordingly, the waste toner housing is prevented from being deformed by heat and pressure, and thus white lines on images, flowback of waste toner and insufficient cleaning, which are caused by interference with the light path due to deformation of the waste toner housing, can be reduced. Additionally, tolerance can be greatly reduced as a result of resolving the problem of deformation of the waste toner housing, so a developing unit having a smaller size can be provided. | 10-02-2008 |
20090214251 | IMAGE FORMING APPARATUS AND FRAME UNIT THEREOF - An image forming apparatus includes an image carrier, an exposure unit to form a latent image on the image carrier by light, and a particle entering prevention device to prevent particles from entering an optical path between the exposure unit and the image carrier. The particle entering prevention device includes a particle storage unit disposed in a vicinity of the optical path, to store the particles therein. | 08-27-2009 |
20090214263 | IMAGE FORMING APPARATUS, AND DEVELOPING DEVICE AND DEVELOPING UNIT THEREOF - An image forming apparatus includes developing units designed to have an appropriate developer storage capacity in consideration of developer consumption, and improved convenience of use. The image forming apparatus also includes an image carrier, and plural developing units arranged along a rotating direction of the image carrier to supply developers to the image carrier. The plural developing units include a first developing unit having the largest developer storage capacity and a second developing unit having the second largest developer storage capacity after the first developing unit. | 08-27-2009 |
20090245890 | IMAGE FORMING APPARATUS AND DEVELOPER THEREOF - An image forming apparatus and a developer thereof includes a developer frame to store a developing agent, a developing device rotatably mounted to the developer frame, a support member mounted to the developer frame, and a regulating member having a first end fixed to the support member, and a second end opposite to the first end, the second end installed in a trail-type manner. The support member includes a plurality of bending portions bent to reinforce a strength of the support member. A trail-type regulating device improved to maintain a sufficient strength and a sufficient elasticity is also disclosed. The regulating device allows the developing agent layer attached to the developing device can be uniform. | 10-01-2009 |
20100003049 | Image developing apparatus and image forming apparatus using the apparatus - An image developing apparatus includes an upper case; a lower case disposed on a lower side of the upper case, and internally housing a developing agent, and having an opening. A photoconductive drum is disposed on the upper case for forming an electrostatic latent image on a surface thereof. A charging roller is disposed on one side of an outer circumference of the photoconductive drum for charging the photoconductive drum. A developing roller having one part is exposed through the opening of the lower case to cooperate with the photoconductive drum for developing the electrostatic latent image. A scattering preventing unit disposed between the photoconductive drum and the developing roller, to prevent scattering of the developing agent supplied by the developing roller. The scattering preventing unit includes a blocking curtain which covers a part of the opening and having one side in contact with the outer circumference of the photoconductive drum. A fixing bracket is provided for supporting the blocking curtain. | 01-07-2010 |
20110097114 | IMAGE FORMING APPARATUS, AND DEVELOPING DEVICE AND DEVELOPING UNIT THEREOF - An image forming apparatus includes developing units designed to have an appropriate developer storage capacity in consideration of developer consumption, and improved convenience of use. The image forming apparatus also includes an image carrier, and plural developing units arranged along a rotating direction of the image carrier to supply developers to the image carrier. The plural developing units include a first developing unit having the largest developer storage capacity and a second developing unit having the second largest developer storage capacity after the first developing unit. | 04-28-2011 |
20120201572 | ROLLER FOR IMAGING APPARATUS AND IMAGING APPARATUS INCLUDING THE ROLLER - A roller includes a shaft including reinforcing fiber and a binder resin; and an elastic body surrounding an outer surface of the shaft, wherein an average length to average diameter ratio (L/D) of the reinforcing fiber is from about 15,000:1 to about 50,000:1. | 08-09-2012 |
20120308271 | IMAGE FORMING APPARATUS, AND DEVELOPING DEVICE AND DEVELOPING UNIT THEREOF - An image forming apparatus includes developing units designed to have an appropriate developer storage capacity in consideration of developer consumption, and improved convenience of use. The image forming apparatus also includes an image carrier, and plural developing units arranged along a rotating direction of the image carrier to supply developers to the image carrier. The plural developing units include a first developing unit having the largest developer storage capacity and a second developing unit having the second largest developer storage capacity after the first developing unit. | 12-06-2012 |
20130156471 | IMAGE FORMING APPARATUS, AND DEVELOPING DEVICE AND DEVELOPING UNIT THEREOF - An image forming apparatus includes developing units designed to have an appropriate developer storage capacity in consideration of developer consumption, and improved convenience of use. The image forming apparatus also includes an image carrier, and plural developing units arranged along a rotating direction of the image carrier to supply developers to the image carrier. The plural developing units include a first developing unit having the largest developer storage capacity and a second developing unit having the second largest developer storage capacity after the first developing unit. | 06-20-2013 |