Patent application number | Description | Published |
20090267288 | SHEET FEEDING APPARATUS, SHEET FEEDING METHOD AND CONTROL PROGRAM - A sheet feeding apparatus provided with a fan for blowing air against sheets stacked on a sheet tray, a position detecting sensor for detecting the position of the sheets floated up by the fan, and a tray lifting and lowering mechanism for lifting and lowering the sheet tray. The tray lifting and lowering mechanism is controlled on the basis of a result of detection by the position detecting sensor. | 10-29-2009 |
20110002008 | IMAGE FORMING SYSTEM AND METHOD OF CONTROLLING IMAGE FORMING SYSTEM - A configuration of an image forming system that includes an image forming apparatus and at least one of a paper feed apparatus and a post-process apparatus is defined based on system configuration information including a combination of identification information for the apparatuses and setting information for the order of arrangement of the apparatuses corresponding to the identification information without using a dedicated line connection. | 01-06-2011 |
20110085839 | IMAGE FORMING SYSTEM AND CONTROL METHOD FOR THE SAME - An image forming system comprises a selection unit for selecting a post-processing apparatus that executes post-processing to a recording medium on which an image is formed from among a plurality of post-processing apparatuses, and a selection limitation unit for determining an insertion apparatus whose supply of the insertion medium to be limited for a selected post-processing apparatus and limiting selection of the insertion apparatus. | 04-14-2011 |
20110133386 | SHEET CONVEYING SYSTEM, CONTROL METHOD THEREFOR, CONTROL PROGRAM FOR IMPLEMENTING THE METHOD, AND STORAGE MEDIUM STORING THE PROGRAM - A sheet conveying system which is capable of preventing a jammed sheet from being mixed with processed sheets, reducing waste in sheets and toners, and further alleviating the user's operations, when jamming has occurred during passing of a sheet between respective sheet conveying devices of upstream and downstream apparatuses. A puncher control section of a puncher as an upstream apparatus of the system issues a passing completion notification as to the passing of a sheet to a staple stacker control section of a staple stacker as a downstream apparatus of the system. Upon reception of the notification, when the staple stacker control section determines that the parameter of auxiliary information of the notification indicates an abnormal discharge of the sheet from the puncher, the staple stacker stops the conveyance of the sheet. | 06-09-2011 |
20120092726 | IMAGE FORMING SYSTEM AND METHOD OF CONTROLLING IMAGE FORMING SYSTEM - A configuration of an image forming system that includes an image forming apparatus and at least one of a paper feed apparatus and a post-process apparatus is defined based on system configuration information including a combination of identification information for the apparatuses and setting information for the order of arrangement of the apparatuses corresponding to the identification information without using a dedicated line connection. | 04-19-2012 |
Patent application number | Description | Published |
20080253785 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus capable of reducing damage in a fixing section and printing a high-quality image on a sheet at low cost without reducing productivity. A sheet shifting mechanism is arranged upstream of a transfer roller and moves the sheet in a sheet lateral direction orthogonal to the sheet conveying direction. In order to change a position at which a sheet passes through a fixing roller, the sheet shifting mechanism is controlled for every conveyance of a predetermined number of sheets, whereby sheet movement in the sheet lateral direction is controlled. A correction amount for an error due to sheet shifting by the sheet shifting mechanism is stored for each of sheet shift positions. An image forming position in the sheet lateral direction of a photosensitive drum is shifted on the basis of the sheet shift position and the stored correction amount. | 10-16-2008 |
20080253818 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREFOR - An image forming apparatus that can satisfy productivity at the time of double-sided image formation without jamming due to a collision of a succeeding sheet with a preceding sheet, and without upsizing of the apparatus. The image forming apparatus performs a sheet circulation transport for circulating and transporting a sheet to an image forming unit to perform image formation on both a first side and a second side of the sheet. The sheet is fed to the image forming unit at a predetermined image formation start timing for the first side image formation. The first side image-formed sheet is reversed, and re-fed to the image forming unit for the second side image formation while causing the first side image-formed sheet to wait at least one of sheet waiting positions. A full state where all the sheet waiting positions are full of the first side image-formed sheets is detected. The sheet feeding unit is controlled so that the number of sheets on which the sheet circulation transport is performed is greater than the number of the sheet waiting positions. When the full state detecting unit detects the full state, the sheet re-feeding unit is controlled so that a head sheet among the first side image-formed sheets waiting at the sheet waiting positions is fed in advance of the predetermined image formation start timing. | 10-16-2008 |
20100028035 | IMAGE FORMING APPARATUS AND CONTROL METHOD FOR THE SAME - When image forming is to be successively performed on recording sheets having different sizes, an image forming apparatus suitably executes adjustment processing on a fixing apparatus or the like used in the image forming, and maintains image quality as well as suppresses a drop in productivity. To accomplish this, the image forming apparatus specifies the size of a printing material onto which an image is to be performed, and with use of the specified printing material size and the size of printing materials on which images have been formed immediately previously, determines whether it is necessary to execute adjustment processing for maintaining image quality. Specifically, adjustment processing is executed only if the size of the printing material on which an image is to be formed is greater than the size of the printing materials on which images were formed immediately previously. | 02-04-2010 |
20100117289 | IMAGE FORMING SYSTEM - An image forming system having: a sheet feeding unit which cuts a roll sheet and feeds cut sheets; a stack unit which stacks and stores the sheets fed by the sheet feeding unit and feeds the stored sheets; an image forming portion which forms an image on the sheets fed from the stack unit; and a controlling unit configured to control the feeding unit and the stack unit so that the stack unit feeds a sheet stored in the stack unit to the image forming portion when the sheet feeding unit feeds a sheet to the stack unit so as to stack the sheet from the sheet feeding unit into the stack unit. | 05-13-2010 |
20110170887 | IMAGE FORMING SYSTEM - An image forming system which is capable of causing a clear coating apparatus to discharge processed sheets in proper page order, and improving usability and operability of the system by users. An mage forming apparatus is set to perform single-sided image formation or double-sided image formation. A clear coating apparatus is set to perform single-sided clearing coating or double-sided clear coating. Whether to perform inverted discharge of sheets is controlled according to the settings of the image forming apparatus and the clear coating apparatus. | 07-14-2011 |
20110280643 | IMAGE FORMING APPARATUS IMPROVED IN OPERABILITY FOR PRINT JOB INVOLVING SINGLE-SIDED PRINTING AND DOUBLE-SIDED PRINTING - An image forming apparatus capable of improving productivity in a print job mixedly involving single-sided printing and double-sided printing. Sheets are fed one by one to an image forming section. When double-sided printing is to be performed, a sheet having an image formed on the first side thereof by the image forming section is re-fed thereto so as to have an image formed on the second side thereof. When a sheet for double-sided printing exists, which is posterior in page order to a sheet for single-sided printing, an image forming order is changed such that the first side of the sheet for double-sided printing is subjected to image formation prior to the sheet for single-sided printing. When it is predicted that a state will occur in which the sheet for single-sided printing cannot be fed, the image forming order is not changed. | 11-17-2011 |
20110286756 | IMAGE FORMING APPARATUS - An image forming apparatus, which forms an image on a recording medium, including: an image bearing member; a toner image forming portion configured to form a toner image on the image bearing member; a transfer device configured to transfer the toner image formed on the image bearing member to the recording medium; a fixing device configured to pressurize and heat the recording medium to which the toner image is transferred, to fix the toner image on the recording medium; and a control circuit portion configured to control a temperature of the fixing device, wherein the control circuit portion controls a temperature of the fixing device for a first recording medium considering a temperature of the fixing device for a second recording medium to be fixed after the first recording medium. | 11-24-2011 |
20120148276 | IMAGE FORMING APPARATUS AND CONTROL METHOD FOR THE SAME - When image forming is to be successively performed on recording sheets having different sizes, an image forming apparatus suitably executes adjustment processing on a fixing apparatus or the like used in the image forming, and maintains image quality as well as suppresses a drop in productivity. To accomplish this, the image forming apparatus specifies the size of a printing material onto which an image is to be performed, and with use of the specified printing material size and the size of printing materials on which images have been formed immediately previously, determines whether it is necessary to execute adjustment processing for maintaining image quality. Specifically, adjustment processing is executed only if the size of the printing material on which an image is to be formed is greater than the size of the printing materials on which images were formed immediately previously. | 06-14-2012 |
20130202338 | IMAGE FORMING APPARATUS IMPROVED IN OPERABILITY FOR PRINT JOB INVOLVING SINGLE-SIDED PRINTING AND DOUBLE-SIDED PRINTING - An image forming apparatus capable of improving productivity in a print job mixedly involving single-sided printing and double-sided printing. Sheets are fed one by one to an image forming section. When double-sided printing is to be performed, a sheet having an image formed on the first side thereof by the image forming section is re-fed thereto so as to have an image formed on the second side thereof. When a sheet for double-sided printing exists, which is posterior in page order to a sheet for single-sided printing, an image forming order is changed such that the first side of the sheet for double-sided printing is subjected to image formation prior to the sheet for single-sided printing. When it is predicted that a state will occur in which the sheet for single-sided printing cannot be fed, the image forming order is not changed. | 08-08-2013 |