Patent application number | Description | Published |
20100242439 | CONTROL UNIT AND CONTROL METHOD FOR REDUCTANT SUPPLY DEVICE - There are provided a reductant supply device and a control method for the reductant supply device, which can prevent heat damage of a reductant injection valve, and also prevent crystallization of urea solution due to excessive cooling of the solution reductant. | 09-30-2010 |
20110107742 | Reducing agent injection valve abnormality detection device and abnormality detection method - A reducing agent injection valve abnormality detection device for detecting clogging of a reducing agent injection valve in a reducing agent injection device has a pressure detection component that detects the pressure inside a supply path based on a sensor value of a pressure sensor, a pump control component that fixes the output of a pump in a state where the pressure inside the supply path has become a value in a predetermined range, a reducing agent injection valve control component that opens the valve for a predetermined amount of time in a state where the output of the pump has been fixed, and a clogging determination component that determines the extent of clogging of the reducing agent injection valve by comparing, with plural threshold values, the pressure, or a pressure drop quantity, inside the supply path when the valve has been opened for the predetermined amount of time. | 05-12-2011 |
20130118155 | CONTROL UNIT AND CONTROL METHOD FOR REDUCTANT SUPPLY DEVICE - A reductant supply device having a reductant injection valve with an injection tip that is fixed to an exhaust pipe on the exhaust gas upstream side of a reduction catalyst, the device directly injecting and supplying an urea aqueous solution which is pressure-fed to the reductant injection valve in a state of a liquid fluid, by controlling opening and closing of the reductant injection valve. The device includes a cooling water circulation passage; a flow rate control valve; a temperature sensor for detecting a temperature at the tip of the reductant injection valve; and a controller for controlling the flow rate control valve based on the temperature at the tip such that the temperature at the tip of the reductant injection valve is maintained at a temperature between equal to or higher than a boiling point of the urea aqueous solution and equal to or lower than 130° C. | 05-16-2013 |
Patent application number | Description | Published |
20100110483 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - An image forming apparatus prints print image data including both a duplex printing instruction and a simplex printing instruction while reducing or eliminating the development of a sheet interval. When it is determined that a print request includes both a duplex printing instruction and a simplex printing instruction, the maximum number N of transfer sheets that can be placed on a transport path is determined, and an order of output of print images is determined based on the maximum interleave number N. A blank sheet image is inserted in accordance with a switch timing from duplex printing to simplex printing. | 05-06-2010 |
20100290082 | IMAGE FORMING APPARATUS AND PRINT CONTROL METHOD, AND PROGRAM PRODUCT - A printer includes a first receiving unit that receives a print job containing a printing requirement, where the printing requirement is set as either an indispensable requirement that is indispensable for executing the print job or a desired requirement that is desirable for executing the print job; a second receiving unit that receives, from each of external image forming apparatuses connected to the image forming apparatus via a network, a printability level indicating whether the external image forming apparatus has a printing function satisfying the indispensable requirement or a printing function satisfying the desired requirement; a selecting unit that selects an image forming apparatus that executes the print job from the external image forming apparatuses by checking the printability level; and a print-operation control unit that sends the print job to the selected image forming apparatus and causes the selected image forming apparatus to execute the print job. | 11-18-2010 |
20110013215 | Image forming apparatus, image forming system, and image forming method - A printer includes a communicating unit that receives a print job being a unit of execution of a printing process of a first printing protocol and a second printing protocol. The first printing protocol contains a series of process instructions and print data that allow the printing process to be performed from an interrupted point when the printing process is resumed after being interrupted. The printer also includes a print processing unit that performs the printing process by executing the print job, and a priority processing unit that preferentially selects a print job of the first printing protocol related to the interrupted printing process when receiving a print job of the first printing protocol related to the interrupted printing process and a print job of the second printing protocol after the printing process of the print job of the first printing protocol is interrupted. | 01-20-2011 |
20110058215 | PRINTING SYSTEM, PRINTING APPARATUS, COMPUTER PROGRAM, AND STORAGE MEDIUM - A time limit for a printer to be restored to a printable state after an occurrence of a print error that prevents the printer from printing is variably set. If the printer is not in a printable state when an elapsed time since the print error occurred in the printer reaches the time limit being set or exceeds the time limit, a print start command is transmitted to another printer, and a job assignment is switched to the other printer. | 03-10-2011 |
20110063665 | PRINTING SYSTEM, PRINTING DEVICE, PROGRAM AND STORAGE MEDIUM - A printing system including a plurality of host devices and a plurality of printing devices connected. The printing system includes: a storage unit; a first storage processing unit for storing, in the storage unit, a print status of a print job; an information updating unit for monitoring the plurality of printing devices and updates the execution status identification information stored in the storage unit; and a job management unit for determining, based on the print status, whether the print job is to be executed on the one printing device. When a processing request for the print job is sent from another host device while the printing process for the print job sent from the one host device is suspended in the one printing device, the job management unit allows the one printing device to execute the print job sent from the another host device. | 03-17-2011 |
20110128579 | PRINTING SYSTEM, PRINTING APPARATUS, PRINTING METHOD, AND STORAGE MEDIUM - A printing system includes a storage unit that stores printing status information and host apparatus identification information. The printing status information includes a printing status representing whether a printing processing of the print job is interrupted, and the host apparatus identification information represents the host apparatus as a requestor of the print job. The printing system includes a update unit that updates the printing status information based on a monitoring result of the printing apparatus; a job managing unit that judges whether to execute the print job according to the printing status information when receiving a processing request of the print job from the host apparatus; and a printing status information managing unit that decides printing status information to be stored in the storage unit. The printing status information managing unit first deletes, from the storage unit, printing status information on a print job transmitted from a low-ranked host apparatus. | 06-02-2011 |