Patent application number | Description | Published |
20100053646 | IMAGE DENSITY CONTROL DEVICE AND IMAGE FORMING APPARATUS - An image density control device includes: a light irradiation unit that irradiates an irradiation light of a wave-length, in which reflectance of a second color layer is higher than reflectance of a first color layer, onto an image which is a laminated layer image formed by an image forming unit on an image carrier and formed out of the first color layer and the second color layer laminated on the first color layer; a detection unit that detects a quantity of a reflection light reflected on the laminated layer image irradiated by the irradiation light from the light irradiation unit; and a control unit that controls density of the image according to the quantity of the reflection light detected by the detection unit. | 03-04-2010 |
20100054774 | IMAGE DENSITY CONTROL DEVICE AND IMAGE FORMING APPARATUS - An image density control device includes a first detecting unit that detects a light amount of first specular reflected light which is reflected from a surface of an image carrier, a second detecting unit that detects a light amount of first diffuse reflected light which is reflected from an image on the surface of the image carrier, a surface change information acquiring unit that acquires a surface change information which shows changes with time, and a control unit that corrects the light amount of the first specular reflected light by using the surface change information to a light amount of second specular reflected light, and controls the density of the image by using the light amount of the first diffuse reflected light and the light amount of the second specular reflected light. | 03-04-2010 |
20100247118 | SUPPLY CONTROL APPARATUS, IMAGE-FORMING APPARATUS, AND SUPPLY CONTROL METHOD - A supply control apparatus includes: a specifying unit that specifies a total amount of toner held in a holding chamber of a toner holding unit; and a supply control unit that controls supply of toner held in the holding chamber to a development unit that develops a latent image using the toner, in a case that the specified total amount is a first amount, such that an amount of the toner supplied per unit of time is smaller than the amount supplied in a case that the total amount is a second amount, which is smaller than the first amount. | 09-30-2010 |
20110052229 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier and a detection unit. The image carrier is stretched around a plurality of rolls. The detection unit detects a density of a toner image formed on the image carrier, based on an amount of regularly reflected light from a surface of the image carrier. A detection length where the detection unit performs the detection in a movement direction of the image carrier is longer than a length, in the movement direction of the image carrier, of a deformation area where a deformation of the image carrier is caused. | 03-03-2011 |
20120140298 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image reader that covers an image recorded material placed on a reading surface with an openable cover plate so as to press thereof and optically reads an image of the image recorded material, an image output unit that forms an image on a recording sheet and outputs the image, a detecting unit that detects an opened/closed state of the cover plate when the image output unit forms a gradation test image on the recording sheet, the recording sheet having the gradation test image formed thereon is placed on the reading surface of the image reader, and an operation of reading the gradation test image is performed, and a gradation correction unit that conducts a gradation correction of the image forming apparatus based on an image read by the image reader when the detecting unit detects the closed state of the cover plate. | 06-07-2012 |
20130013765 | INFORMATION PROCESSING APPARATUS, IMAGE FORMING APPARATUS, INFORMATION PROCESSING METHOD, IMAGE FORMING METHOD, AND COMPUTER READABLE MEDIUM - An information processing apparatus includes an acquiring unit that acquires an information item regarding an operating condition of an image forming apparatus, a first storage controller that stores the information item in a memory, an extracting unit that extracts samples from among the information items stored in the memory in accordance with a predetermined algorithm if an amount of space remaining in the memory is smaller than a predetermined threshold value, where the samples represent results of detection of the operating condition of the image forming apparatus, a statistical unit that computes a statistical value using the samples, a second storage controller that deletes the samples from the memory and stores the statistical value in the memory, and a transmitting unit that transmits the information items to a server via a communication line. | 01-10-2013 |
20130019128 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND COMPUTER READABLE MEDIUMAANM YAMASAKI; NaoyaAACI KanagawaAACO JPAAGP YAMASAKI; Naoya Kanagawa JPAANM AOKI; MatsuyukiAACI KanagawaAACO JPAAGP AOKI; Matsuyuki Kanagawa JPAANM SHISHIKURA; ShunichiroAACI KanagawaAACO JPAAGP SHISHIKURA; Shunichiro Kanagawa JPAANM IWANAMI; ToruAACI KanagawaAACO JPAAGP IWANAMI; Toru Kanagawa JPAANM NAGATA; KenjoAACI KanagawaAACO JPAAGP NAGATA; Kenjo Kanagawa JP - An information processing apparatus includes an acquiring unit that acquires diagnosis information regarding an operating condition of an image forming apparatus that forms an image, a communication connection unit that establishes a communication connection with the image forming apparatus and a management server via a communication line, a storage controller that stores the diagnosis information acquired by the acquiring unit in a predetermined memory, where the storage controller reduces a data amount of the diagnosis information stored when a communication connection is not established to less than that stored when a communication connection is established, and a transmitting unit that transmits the diagnosis information stored in the memory to the management server if a communication connection is established by the communication connection unit. | 01-17-2013 |
20130221205 | LIGHT AMOUNT DETECTOR AND IMAGE FORMING APPARATUS - A light amount detector includes the following elements. An irradiation unit irradiates an image carrier with detection light. A light receiver receives reflected light obtained as a result of being reflected by the image carrier. A housing stores therein the irradiation unit and the light receiver and includes an opposing surface which opposes the image carrier. A window section includes a detection surface through which the detection light is emitted and the reflected light is received. The window section is supported by the housing and is disposed such that the detection surface is positioned farther inward than the opposing surface of the housing. The window section transmits the detection light and the reflected light. | 08-29-2013 |
20140093261 | DETECTION DEVICE AND IMAGE FORMING APPARATUS - A detection device includes an irradiation unit that irradiates a medium with first irradiation light, a first optical system that has a first incident surface and changes the first irradiation light into second irradiation light, a second optical system that has a second incident surface and changes the first irradiation light into third irradiation light, and a light receiving unit that is provided in a traveling direction of reflection light of the second irradiation light and the third irradiation light, which are specularly reflected by the medium, and receives the reflection light of the second irradiation light and the third irradiation light, which are specularly reflected by the medium, so as to detect a positional deviation amount of an image formed on the medium and detect a density deviation amount of the image formed on the medium. | 04-03-2014 |
Patent application number | Description | Published |
20080205922 | Image forming apparatus having a toner concentration sensor - An image forming apparatus includes an image carrier on which an electrostatic latent image is formed, a rotary developing device having N developer carriers on a rotation orbit and moving the N developer carriers to a development position opposite to the image carrier, and a toner concentration sensor that measures toner concentrations of the developers. A measurement position of the toner concentration sensor is set on a second virtual straight line having a first angle toward a first virtual straight line that connects a rotation center of the rotary developing device and the development position. The N developer carriers are placed in turn in an order at the same angular interval as the first angle, and an angular interval between the N-th and first developer carriers is set to a second angle greater than the first angle. | 08-28-2008 |
20080212826 | IMAGE FORMING APPARATUS, CONTROLLING UNIT, IMAGE FORMING METHOD AND COMPUTER READABLE MEDIUM - The image forming apparatus is provided with: an image forming unit that forms an image on a medium; a speed changing unit that changes an image forming speed of the image forming unit; a detecting unit that detects a state quantity indicating a state of the image on the medium formed by the image forming unit; and an adjusting unit that adjusts an image forming condition set by the image forming unit according to a detection result of the state quantity detected by the detecting unit and a target value for the state quantity. The adjusting unit changes the target value for the state quantity according to the state quantity detected by the detecting unit after the speed changing unit changes the image forming speed. | 09-04-2008 |
20080219682 | IMAGE FORMING APPARATUS, CONTROLLER, COMPUTER READABLE MEDIUM AND IMAGE FORMING CONDITION ADJUSTMENT METHOD - An image forming apparatus is provided with: an image forming unit that forms an image on a medium according an image forming condition; a speed changing unit that changes an image forming speed of the image forming unit between a plurality of image forming speeds including a first image forming speed; an adjusting unit that adjusts the image forming condition set in the image forming unit; a measuring unit that measures an elapsed state after the image forming condition is adjusted for the last time at the first image forming speed in the image forming unit, and outputs a measured value indicative of the elapsed state; and a determination unit that determines, according to the elapsed state, whether or not to adjust the image forming condition before the image forming unit starts forming an image at the first image forming speed. | 09-11-2008 |
20090022506 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image carrying member; a developing unit that develops an electrostatic latent image formed on the image carrying member using toner; a toner dispensing unit that dispenses the toner to the developing unit; and a toner dispense control unit that controls the toner dispensing unit in accordance with an operation speed of the developing unit or the image carrying member. | 01-22-2009 |
20090202261 | Image Forming Apparatus Having A Toner Concentration Sensor - An image forming apparatus includes an image carrier on which an electrostatic latent image is formed, a rotary developing device having N developer carriers, where N defines a total number of developer carriers, the N developer carriers carrying developers to develop the electrostatic latent image, and the rotary developing device moves the N developer carriers to a development position opposite to the image carrier, and a toner concentration sensor that measures toner concentrations of the developers carried in the developer carriers. A measurement position of the toner concentration sensor is set on a second virtual straight line with the second virtual straight line having a first angle or an angle that is double the first angle toward a first virtual straight line on a rotation orbit of the rotary device, and the first virtual straight line connects a rotation center of the rotary developing device and the development position. The N developer carriers are placed in turn in an order starting from a first developer carrier to an N-th developer carrier at the same angular interval as the first angle on the rotation orbit of the rotary developing device, and an angular interval between the N-th developer carrier and the first developer carrier is set to a second angle greater than the first angle. | 08-13-2009 |
20090316173 | IMAGE FORMING APPARATUS, CONTROLLING DEVICE, IMAGE FORMATION METHOD AND COMPUTER READABLE MEDIUM - The image forming apparatus includes: an image forming unit forming an image on a medium by using an image forming portion; a mode setting unit setting an image forming mode of plural image forming modes, the plural image forming modes setting, at a time of forming the image, different image forming conditions for the image forming portion included in the image forming unit; an adjusting unit performing adjustment of an image forming condition in the image forming mode; and a measuring unit individually measuring, for each of the image forming modes, a progress state after the adjustment of the image forming condition is performed by the adjusting unit in the image forming mode. The adjusting unit performs the adjustment of the image forming condition when the progress state in the image forming mode exceeds a certain value in the image forming mode. | 12-24-2009 |
20110013915 | CONSUMABLE MANAGEMENT SYSTEM AND IMAGE FORMING APPARATUS - An image forming apparatus includes: a predicting unit that predicts a prediction lifetime of a consumable that is detachably mounted in the image forming apparatus, based on consumption information corresponding to an operation of the image forming apparatus; a connection determining unit that determines whether or not the image forming apparatus is connected to a managing apparatus that manages a replacement time of the consumable that is detachably mounted in the image forming apparatus; a consumption information transmitting unit that transmits the consumption information to the managing apparatus located outside the image forming apparatus; a managed lifetime information receiving unit as defined herein; a replacement time determining unit that determines whether or not the replacement time of the consumable has been reached; a learning unit as defined herein; and a prediction lifetime updating unit as defined herein. | 01-20-2011 |
20120070163 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier, and a rotation device having image-forming devices each containing a toner and forming a toner image on the image carrier with the toner. The apparatus further includes: a detector attached to at least one of the image-forming devices to detect a quantity of the toner, thereby outputting an analog signal representing the quantity; and a transmission path transmitting the analog signal to the outside of the rotation device. The transmission path includes: a rotation terminal mounted on and rotating with the rotation device; and a contact terminal provided outside the rotation device, and maintaining continuity with the rotation terminal by contacting a surface of the rotation terminal even when the rotation terminal rotates. The apparatus further includes a correction section correcting the analog signal transmitted by the transmission path, according to a contact resistance between the rotation terminal and the contact terminal. | 03-22-2012 |