| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 399252000 |
Dry development
| 1931 |
| 399237000 |
Liquid development
| 127 |
| 399223000 |
Plural diverse (e.g., color)
| 108 |
| 399236000 |
Applicator speed | 4 |
| 20090232556 | COUNTING METHOD OF MIXING TIME OF DEVELOPER - A driving time count is obtained by accumulating a multiplication value which is obtained by multiplying a driving time of a mixer by a coefficient corresponding to an operation of a developing roller. When the driving time count reaches a life threshold for judgment of a life of a developer, it is judged that the developer reaches its end of life. | 09-17-2009 |
| 20100008700 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member on which an electrostatic image is formed by imagewise exposure; a rotatable member; a developing device carried on said rotatable member and movable, by rotation of said rotatable member, to a developing position where said developing device is opposed to said image bearing member; a driven gear which is provided in said developing device and which receives a driving force for operating said developing device; and a driving gear, provided in a main assembly of the apparatus, for driving engagement with said driven gear of said developing device which is located at the developing position, wherein said driving gear, when said developing device is moving toward the developing position, is driven such that moving direction thereof is the same as a moving direction of said driven gear at an engagement portion with said driven gear, wherein upon driving engagement between said driven gear and said driving gear, a peripheral speed VA of said driven gear which is being moved by said rotatable member on an addendum circle thereof at said engagement portion and a peripheral speed VB of said driving gear on an addendum circle thereof satisfy 0.9≦VA/VB≦1.0. | 01-14-2010 |
| 20100111569 | IMAGE FORMING APPARATUS AND DEVELOPING APPARATUS - An image forming apparatus includes an image bearing member; a developing device including a developer carrying member for supplying the developer to the image bearing member, a developer feeding member, provided rotatably in a developing container, first and second driving force receiving members, provided at opposite end portions of the developer carrying member, for driving the developer carrying member and the developer feeding member, respectively; a first and second drive inputting members, for inputting drive to the first and second driving force receiving members, respectively. Directions, toward and away from the image bearing member, of forces are applied to abutment members, which determine a gap between the image bearing member and the developer carrying member, at the time when the drives are inputted to the first driving force receiving member and the second driving force receiving member, respectively. | 05-06-2010 |
| 20120243910 | IMAGE FORMING APPARATUS - An image forming apparatus is provided, which includes a controller configured to determine a moment for switching a circumferential velocity of a development roller to a first circumferential velocity from a second circumferential velocity lower than the first circumferential velocity based on a moment when the controller issues to a sheet feeding unit an instruction to start feeding of a sheet, and to determine a moment for switching the circumferential velocity of the development roller to the second circumferential velocity from the first circumferential velocity based on a moment when a first detector detects existence of the sheet ejected from a registration roller. | 09-27-2012 |
| 399234000 |
Development prevention | 4 |
| 20090220280 | Image forming apparatus and method of controlling the same - An image forming apparatus includes a photoconductive medium electrified by an electrifying apparatus to a predetermined electric potential, a plurality of color developing apparatuses which are fixed around the photoconductive medium, each color developing apparatus having a developing roller to adhere a predetermined color toner to an electrostatic latent image formed on the photoconductive medium by a laser scanning unit, and a supplying roller to supply a toner to the developing roller, a voltage supplying apparatus to apply a predetermined bias voltage to the developing roller and the supplying roller, and a controlling apparatus to control a degree and a timing of applying the bias voltages to the developing roller and the supplying roller to control a movement state of the toner between the supplying roller and the developing roller. | 09-03-2009 |
| 20100196054 | IMAGE FORMING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - An image forming unit includes an image supporting member; a developer supporting member for attaching developer to a static latent image formed on the image supporting member to form a developer image; and a protective sheet disposed between the image supporting member and the developer supporting member when the image forming unit is stored. The protective sheet has a surface resistivity between 1.0×10 | 08-05-2010 |
| 20110150533 | DEVELOPING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - A housing of a developing apparatus is provided with a conveying member in a developer supplying and recovering portion, and two agitating members rotating in the same direction respectively as viewing rotating shafts from a near side in an axial direction, in a developer agitating portion. A guide is provided in an inner bottom surface of the housing between two agitating members. A braking portion suppressing a discharge of a developer is provided in a downstream side of the developer agitating portion in a developer conveying direction of the second agitating member, and a discharge portion is provided in a downstream side of a disc of the braking portion. | 06-23-2011 |
| 20130336677 | METHOD FOR ERASING IMAGE - According to one embodiment, a method for erasing an image includes erasing an image formed using a toner containing at least a binder resin, an electron donating color developable agent, and an electron accepting color developing agent by heating for 10 seconds or less. A color difference ΔE between a region where the image is erased and a paper is 5 or less. | 12-19-2013 |
| Entries |
| Document | Title | Date |
|---|
| 20080199220 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes a housing with an opening portion for supplying developer; a developer carrier rotatably placed within the housing so as to expose a portion of the developer carrier through the opening portion; and a developer agitating member rotatably placed within the housing in order to agitate and electrically charge the developer. The housing is formed such that the first housing piece and the second housing piece are coupled to each other in a detachable manner. The first housing piece is provided therein with the opening portion and a sealed opening portion, and supports the developer carrier and the developer agitating member in a rotatable manner, and the second housing piece is coupled with the first housing piece so as to seal the sealed opening portion, and the first housing piece and the second housing piece are coupled to each other through a snap fit joint. | 08-21-2008 |
| 20080219706 | DEVELOPMENT APPARATUS AND IMAGE FORMING APPARATUS - In one embodiment, in a development apparatus in which at least a first screw conveyor has been provided in a case, a developer affixing prevention member that prevents a developer from affixing to the first screw conveyor is disposed in the vicinity of a toner resupply port provided in the case. More specifically, the developer affixing prevention member is formed with a torsion coil spring formed from the wire rod whose middle has been wound in a coil-like shape, and in a state with the wound portion of this torsion coil spring supported by a support plate of the case, one arm portion is fixed to the support plate, and another arm portion is extended so as to contact a fin and a rotating shaft of the first screw conveyor. | 09-11-2008 |
| 20080247783 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND DEVELOPING AGENT - In an image forming apparatus containing a developing device containing a toner housed therein and feeding the toner onto a photoreceptor to form a toner image, and a cleaning blade removing the toner remaining on the photoreceptor after transferring the toner image formed on the photoreceptor to a transfer medium, a toner having a particle diameter of from 5 to 8 μm and a degree of circularity of from 0.925 to 0.965 and having a lubricant added to a surface thereof in an amount of from 0.01 to 0.125 wt % is used, and the cleaning blade has a hardness of from 60 to 80, a 300% modulus of from 100 to 420 kg/cm | 10-09-2008 |
| 20080267666 | Developing Device, Image Forming Apparatus, Image Forming System, Cartridge, Developing Unit and Photoconductor Unit - A developing device that can be mounted to and dismounted from a mounting and dismounting section provided in an image forming apparatus main unit, the developing device includes: a developing device main unit; a positioning member for positioning the developing device main unit with respect to the mounting and dismounting section by engaging the mounting and dismounting section when the developing device is mounted to the mounting and dismounting section, the positioning member being fixed on a one end side in a longitudinal direction of the developing device main unit; a coupling member that is to be coupled to the mounting and dismounting section when the developing device is mounted to the mounting and dismounting section, the coupling member being attached to the other end side in the longitudinal direction of the developing device main unit in such a manner that its relative position to the developing device main unit can be changed; and an element capable of communication in a noncontacting manner with the image forming apparatus main unit side when the developing device is mounted to the mounting and dismounting section, the element being provided at the one end side in the longitudinal direction of the developing device main unit. | 10-30-2008 |
| 20090016775 | DEVELOPMENT APPARATUS AND IMAGE FORMING APPARATUS - When dynamic torques are Ts, Ti, and T | 01-15-2009 |
| 20090035021 | DEVELOPING METHOD, DEVELOPING APPARATUS AND STORAGE MEDIUM - The present invention provides a method of supplying a developing solution, stably, onto a substrate, upon providing a developing process to the substrate which has been coated with a resist and subjected to an exposure process. In this method, the developing solution is supplied onto the substrate from a first developing solution nozzle, so as to form a ribbon-like region on the surface of the substrate, while rotating the substrate about a vertical axis via a substrate holding part, wherein one end of the ribbon-like region is oriented toward a central portion of the substrate. At this time, by shifting a position of the ribbon-like region in which the developing solution is supplied, a liquid film of the developing solution can be formed on the surface of the substrate. Subsequently, in order to prevent the liquid film of the developing solution from being dried up, the developing solution is supplied from a second developing solution nozzle, so as to form a circular region on the central portion of the substrate or form a ribbon-like region shorter in length than the ribbon-like region of the developing solution supplied from the first developing nozzle. Simultaneously, the substrate is rotated about the vertical axis via the substrate holding part, thereby spreading the developing solution toward a peripheral portion of the substrate by centrifugal force. In this manner, the developing nozzles are selected, corresponding to the process to be performed. | 02-05-2009 |
| 20090047041 | IMAGE FORMING APPARATUS, DEVELOPING APPARATUS AND CONTACT-RETRACTING METHOD - The image forming apparatus is provided with: an image carrier; an exposure member that exposes the image carrier and forms an electrostatic latent image on the image carrier; a developing member that develops the electrostatic latent image formed on the image carrier; and a contact-retracting unit that rotates the developing member taking a predetermined position as the rotational center, and brings the developing member in contact with or proximity to the image carrier or retracts the developing member from the image carrier. | 02-19-2009 |
| 20090067883 | POWER TRANSMITTING UNIT, AND DEVELOPING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - An image forming apparatus includes a main body in which a photosensitive medium is disposed, and a developing device detachably disposed at the main body to develop electrostatic latent images on the photosensitive medium. The developing device includes a developing member disposed in a developing unit to supply developing agent to the photosensitive medium, a driven member to receive power from a driving member, and to allow the developing member to rotate, and a power transmitting member to connect the developing member and the driven member, and to absorb a movement of a normal force direction of a driving force generated between the driving member and the driven member. | 03-12-2009 |
| 20090185830 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus includes: an image receptor; a developing member which develops a latent image on the image receptor with a toner; an anti-spattering member collecting free toner particles, a driver which drives the developing member and the anti-spattering member; and a controller which controls the driver not to drive the anti-spattering member during a printing operation, and to drive the anti-spattering member at other times when printing operation is not being performed. | 07-23-2009 |
| 20090263161 | IMAGE FORMING APPARATUS - An image forming apparatus including: a cylindrical photoconductor; a laser scanning section for forming an electrostatic latent image on a peripheral surface of the photoconductor; an image development section for developing the electrostatic latent image by using a toner; a toner storage section for storing the toner to be supplied; and a transfer section for transferring the visualized image with use of the toner onto a printing sheet, wherein the image development section is disposed upstream of a rotation direction of the photoconductor from the transfer section, the toner storage section is disposed above the image development section while having a predetermined distance from the image development section so as to form a space therebetween for releasing heat, and the laser scanning section emits the scanning beam obliquely upwardly with respect to a horizontal direction so that the emitted scanning beam passes through the space and exposes the peripheral surface. | 10-22-2009 |
| 20100021208 | GEAR MECHANISM AND IMAGE FORMING APPARATUS - A gear mechanism is provided and includes a first sun gear; a first planetary gear configured to mesh with the first sun gear; a first arm configured to keep a distance between the first sun gear and the first planetary gear and configured to swing around a rotation axis of the first sun gear; a second sun gear; a second planetary gear configured to mesh with the second sun gear; a second arm configured to keep a distance between the second sun gear and the second planetary gear and configured to swing around a rotation axis of the second sun gear; and an interlocking unit configured to connect the first arm and the second arm with each other for interlocking the swinging of the first arm and the second arm, the interlocking unit configured to move independently of rotations of the first sun gear and the second sun gear. | 01-28-2010 |
| 20100098461 | REDUCING TONER LEAKS USING INTERNAL SUPPORT - To prevent the developer housing of a toner cartridge from flexing and thereby causing toner leaks, one or more support ribs are added internally to the developer housing, near the developer roll opening to prevent housing flexure. The support rib is designed to not impede toner flow, or movement and installation of components within the cartridge (such as the agitator or other moving parts). The support rib may be formed integrally within the housing, or formed separately and then installed within housing. | 04-22-2010 |
| 20100272471 | ELECTROPHOTOGRAPHIC TONER AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME - Provided are an electrophotographic toner and an electrophotographic image forming apparatus using the same. The electrophotographic toner includes: parent toner particles including a binder resin, a colorant, a releasing agent, and a charge control agent; and barium titanate external additives having an average primary particle diameter in the range of about 50 to about 150 nm, an average shape factor (SF1) in the range of about 100 to about 120, a shape factor in the range of about 0.96 to about 1, and an aspect ratio in the range of about 0.89 to about 1, and added to the surface of the parent toner particles. | 10-28-2010 |
| 20110026971 | DRIVING DEVICE AND IMAGE FORMING APPARATUS - A driving device to be used in an image forming apparatus includes an input gear; a partly non-toothed gear having a toothed portion engageable with the input gear and having a non-toothed portion; a holding member capable of placing the partly non-toothed gear in a holding state in which the non-toothed portion opposes the input gear and the partly non-toothed gear is not engaged with the input gear and capable of placing the partly non-toothed gear in a released state in which the holding state is released; a cylindrical member rotatable by receiving a rotational force; and an entering portion which is rotatable together with the partly non-toothed gear and which is capable of entering an inside of the cylindrical member and capable of receiving the rotational force from the cylindrical member by a frictional force between the entering portion and the cylindrical member. | 02-03-2011 |
| 20110076059 | DIGITAL MANUFACTURE OF A MULTI-CHANNELED SPECIALTY ITEM - The electrographic printing of one or more multi-channeled layers having a particular pattern by electrographic techniques that produces a specialty item electrographically. Such electrographic printing comprises the steps of forming a desired print image, electrographically, on a receiver member utilizing predetermined sized marking particles; and, where desired, forming one or more final multi-channeled layers utilizing marking particles of a predetermined size or size distribution. | 03-31-2011 |
| 20110103838 | DIGITAL MANUFACTURE OF A MICROFLUIDIC DEVICE - In view of the above, this invention is directed to printing methods including electrographic printing wherein toner and/or laminates form one or more multi-channeled layers, with a particular pattern. The multi-channeled layers are printed, such as by electrographic techniques, using the steps of forming a desired image on a receiver member and incorporating channels of toner that form a microfluidic item. In the microfluidic items the channels act as interconnects to transfer fluids between incorporated micro-devices such as pumps, devices, and sensors. The channels can also be designed to act as splitters ports, reservoirs, filters, and separators to allow a variety of specialty micro-devices to be developed with the printer. | 05-05-2011 |
| 20110280629 | IMAGE FORMING APPARATUS AND DEVELOPING APPARATUS - An image forming apparatus includes an image bearing member for carrying a latent image; a developing device including a rotatable developer carrying member for carrying a developer and for supplying the developer to the image bearing member, a developer feeding member, provided rotatably in a developing container containing the developer, for feeding the developer, a first driving force receiving member, provided at one end portion of the developer carrying member with respect to a rotational axis direction of the developer carrying member, for receiving a driving force for driving the developer carrying member, a second driving force receiving member, provided at the other end portion of the developer carrying member with respect to the rotational axis direction of the developer carrying member, for receiving a driving force for driving the developer feeding member, abutment members provided at respective end portions of the developer carrying member to determine a gap between the image bearing member and the developer carrying member by being abutted to respective end portions of the image bearing member; a supporting mechanism for supporting the developing device rotatably relative to a main assembly of the apparatus; a first drive inputting member, provided in the main assembly side of the apparatus, for directly inputting drive to the first driving force receiving member; and a second drive inputting member, provided in the main assembly side of the apparatus, for directly inputting drive to the second driving force receiving member; wherein the first driving force receiving member and the second driving force receiving member are provided such that directions of components, in directions toward and away from the image bearing member, of forces applied to the abutment members at the time when the drives are inputted to the first driving force receiving member and the second driving force receiving member, respectively. | 11-17-2011 |
| 20110318061 | DEVELOPING DEVICE AND IMAGE FORMING DEVICE - A developing device includes: a developing roll; a bearing member that supports the developing roll rotatably, the bearing member including plural outer side surfaces, and distances from a center of a rotation axis of the developing roll to the outer side surfaces being different; and a supporting member that supports the bearing member in a positioning state where one of the plural outer side surfaces is in contact with a reference surface, the outer side surface in contact with the reference surface being changeable. | 12-29-2011 |
| 20120003012 | Developing Cartridge - A developing cartridge having a first side plate and a second side plate spaced opposite from the first side plate, a developer carrying member rotatably supported between the side plates, a developer supplying member rotatably supported between the side plates, a input member to which driving force is input rotatably supported by the first side plate, a primary developing gear to which the driving force is transferred provided on the developer carrying member at the first side plate, a secondary developing gear to which the driving force is transferred provided on the developer carrying member at the second side plate, and a supply gear to which the driving force is transferred provided on the developer supplying member at the second side plate, wherein the input member and the supply gear are arranged so that their projections in the direction of the rotation axis of the developer supplying member overlap. | 01-05-2012 |
| 20120107018 | TONER, METHOD OF MANUFACTURING THE TONER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - There are provided a toner that allows prevention of environmental contamination and is nevertheless free from toner durability degradation, wherein a sufficiently wide color reproduction range can be secured even when it is applied to color toner, and variation in characteristics among toner particles can be suppressed, as well as a method of manufacturing a toner, a developing device, and an image forming apparatus. In the toner particle is formed the biomass resin-containing domain. | 05-03-2012 |
| 20120121298 | IMAGE FORMING APPARATUS - An image bearing member on which an electrostatic image is to be formed; a rotatable supporting member, configured to support a developing device for developing the electrostatic image and configured to rotationally move the developing device toward a developing position, provided movably in a rotational axis direction with respect to a main assembly of the image forming apparatus; an urging member for urging the rotatable supporting member in the rotational axis direction; and a regulating portion for regulating a position of the rotatable supporting member, with respect to the rotational axis direction, urged by the urging member are provided. | 05-17-2012 |
| 20120269553 | DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening in the development casing to carry developer, a magnetic field generator disposed inside the developer bearer, a developer regulator extending in an axial direction of the developer bearer to adjust an amount of developer carried on the developer bearer, and a first axial end seal provided in an axial end portion of the development device outside an image range, in contact with an upstream face of the developer regulator to reduce a size of a clearance between the developer regulator and the development casing. | 10-25-2012 |
| 20120308268 | HIGH SPEED, HIGH QUALITY IMAGE MONOCHROMATIC PRINTER - A printer apparatus includes the use of at least two HSD stations to develop an electrostatic image generated by a single exposure on a photoreceptor in order to enable high speed, high quality monochrome development. A third standby HSD station can be included for increased reliability or be cycled in and out of development allowing on-the-fly cleaning of HSD wires. | 12-06-2012 |
| 20120328333 | IMAGE FORMING APPARATUS COMPONENT POSITIONING MECHANISM - An image forming apparatus includes: an image carrier; a latent-image forming device; a developing device; a latent-image forming device contacting/separating mechanism; and a developing device contacting/separating mechanism, and the latent-image forming device contacting/separating mechanism allows the latent-image forming device to be movable to the latent-image forming device contacting position in a state where the developing device is moved to the developing device contacting position. | 12-27-2012 |
| 20130051857 | Developing Device Provided with Developing Roller and Supply Roller - In a developing device, a developing agent member has a first rotational shaft extending in a first direction. A supply member has a second rotational shaft extending in the first direction, contacts the developing agent member. A housing accommodates a developer, and includes a first wall and a second wall opposed with each other in the first direction. The first wall is formed with a first opening. The second wall is formed with a second opening. When projected in the first direction, at least the second rotational shaft is disposed in the first through-hole. When projected in the first direction, the first rotational shaft and the second rotational shaft is disposed in the first opening. When projected in the first direction, the first rotational shaft and the second rotational shaft is disposed in the second opening. | 02-28-2013 |
| 20130051858 | MOLD FOR RESIN SHAFT-END FLANGE AND ROLLER FOR IMAGE FORMING DEVICE INCLUDING THE RESIN SHAFT-END FLANGE PRODUCED BY THE MOLD - A mold for producing a resin shaft-end flange for a roller for image forming devices, wherein the shaft-end flange includes a flange portion and a shaft portion projecting axially from the center axis of the flange portion and adapted to be fitted to an end portion of a metal sleeve of the roller. The mold ( | 02-28-2013 |
| 20130089359 | Electrostatic Latent Image Developing Toner, Electrostatic Latent Image Developer, Image Forming Apparatus, and Apparatus for Manufacturing Electrostatic Latent Image Developing Toner - An electrostatic latent image developing toner has an average sphericity of at least 0.94 but no more than 0.98, the particles for which the accumulated equivalent spherical diameter on a number basis is at least 90% and the sphericity is less than 0.92 account for less than 3% of the entire toner, the proportion of particles having a sphericity of at least 0.90 but less than 0.95 is at least 20% but no more than 40% of the entire toner, and a proportion of particles having a sphericity of at least 0.95 but no more than 1.00 is at least 60% but no more than 80% of the entire toner. | 04-11-2013 |
| 20140147171 | ELECTROSTATIC INK COMPOSITION, INK CONTAINER, PRINTING APPARATUS AND PRINTING METHOD - Disclosed is an electrostatic ink composition, comprising a single charge director and a charge control agent that counters the build up of negative optical density memory on the intermediate transfer member of a printing apparatus using the electrostatic ink. | 05-29-2014 |
| 20140169833 | IMAGE FORMING APPARATUS - First and second developing members are moved to a developing position from a retracted position respectively in the order of a first developing member and a second developing member, and image forming is started by adhering toner to a first photosensitive member and a second photosensitive member in this order, and a period in which the first developing member moves from the retracted position to the developing position is shorter than a period in which the second developing member moves from the retracted position to the developing position. | 06-19-2014 |
| 20160054679 | Developing Cartridge - A developing cartridge including: a housing; a developing roller rotatable around a rotation axis extending in a first direction; a developing gear supported by an end portion of the developing roller; and a driving force receiving member rotatable around a rotation axis extending in the first direction by receiving a driving force from an image forming apparatus body and including a gear portion engaging with the developing gear, wherein the housing has an opening for filling the housing with developer, and wherein at least a part of the driving force receiving member overlaps the opening when viewed in the first direction. | 02-25-2016 |
| 20180024469 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS | 01-25-2018 |
