摘要:
A system and a method in which the engine dynamically decides which process speed to warm up to based on the number & size of pages currently submitted to the engine, and thus deliver the best job time dynamically.
摘要:
A fuser assembly is provided with an onboard memory that may be used to store information useful in determining the conditions under which the fuser assembly has been operated. Such information can be used to better understand the root cause of fuser assembly failures, and estimate remaining fuser life, etc.
摘要:
An image forming system (210) includes an engine controller (60) and memory device (152) with a power supply (162) supporting a 220 volt, 120 volt or 100 volt level. A fuser control capability indicator (164) is read by the engine controller (60) in order to determine the fuse control capabilities supported by the power supply (162) and, in conjunction, with a geographic region indicator of the system (210), a determination is made as to the appropriate fuser control process to adopt based on the geographic region in which the system (210) is used.
摘要:
A system and method that controls the amount of energy accumulated at the collection location of a printing device to prevent image transfer or offsetting between sheets of stacked media, in particular, media of high thermal capacitance. This may be accomplished by regulating one or more of a combination of factors, including media process speed and sheet interval or pause time, while providing adequate fusing of the toner and an efficient printing operation.
摘要:
An improved laser printer is provided that keeps its fuser at a standby temperature that is somewhat raised above the ambient temperature, which allows the printer to operate more quickly (to begin printing the first page) when a print job arrives at the printer. The time needed to raise the fuser's temperature is minimized, so that other printer operations become the determining factor in the time to first print parameter. The electrical energy that energizes the fuser is provided in a form that prevents light flicker, by use of AC waveform phase control, or by use of integer half cycle control. The present invention uses closed-loop feedback control, and the type of controller is a PID controller.
摘要:
Printer has a standby state in which the motor driving the laser scanning mirror is turned off immediately after a print job when another page is not ready. To increase operating speed, a signal to the printer starts a timer (Ready timer). When a page is printed, the timer is started and only when it reaches zero is the motor turned off. When data of a page is received by the printer and the Ready timer is non-zero, a sheet is immediately picked for printing.
摘要:
Wear of the belt (1) of a belt fuser is minimized by use of a high viscosity lubricant of perfluoropolytrimethylene oxide grease between the inside of the belt and the heater element 6. To avoid damage of the belt at turn on, the belt is heated to a predetermined temperature before force is applied to move the belt.
摘要:
A method of controlling a speed of a print medium through a printer includes the step of providing a print medium transport assembly with a range of print medium transport speeds between a minimum print medium transport speed and a maximum print medium transport speed. A print engine is provided with a print engine speed. The range of print medium transport speeds is divided into subranges of print medium transport speeds. A requested speed is provided to the print medium transport assembly which corresponds to the print engine speed. For each subrange, an acceleration profile control equation, a constant speed control equation, and a deceleration profile control equation is determined. The constant speed control equation is dependent upon the requested speed. One of the subranges of print medium transport speeds is identified which encompasses the requested speed. The print medium is transported through the print medium transport assembly according to the acceleration profile control equation, the constant speed control equation, and the deceleration profile control equation associated with the selected subrange.