Xerox Corporation

Austin Lloyd Richards

William Bruce Weaver

Michael Kenneth Oehl

Michael B Thomson

A method enables adjustment of a print speed for a phase change ink imaging device with reference to an ink level sensor in a print head reservoir indicating an open loop or a closed loop state. The adjustment may also be made with reference to a measured image density, which may be a rolling solid area coverage average.

Open loop print speed control

A method for controlling print speed of an imaging device is provided. The imaging device includes at least one reservoir for supplying liquid ink to a print head and a level sensor in the reservoir. The method comprises measuring an image density of at least a portion of a print job for the imaging device. A state of a level sensor in a print head reservoir is detected. The print speed is adjusted to a target speed in response to the level sensor indicating an open loop state. The target speed is a function of the image density. The print speed is adjusted to a default speed in response to the level sensor indicating a closed loop state.

A printing system and method includes at least two modules, at least one of which is a marking engine module. In the method, one or more sheets to be printed are submitted. Available paths are determined for one of the one or more sheets and a preferred available path is determined and submitted to one or more of the plurality of modules. A reservation matrix representative of the one of the one or more sheets being scheduled on the preferred available path is updated. The steps of determining the available paths, determining a preferred available path, submitted the preferred available path and updating the reservation matrix are repeated for each subsequent sheet of the one or more sheets of the print job.

Printing system and scheduling method

In a printer or copier, a removable module, such as a marking material supply module or a marking device module, is provided with a non-volatile memory chip which retains information about the cumulative use of the module and other performance-related data. The non-volatile memory is accessed through a wireless interface, such as an RF loop or IR detector, which is also associated with the module. The memory can be accessed, through wireless means, either by the printer or copier itself or by an external device, and also while the memory is not installed in a printer or copier.

Wireless interaction with memory associated with a replaceable module for office equipment

In a printer or copier, a removable module, such as a marking material supply module or a marking device module, is provided with a non-volatile memory chip which retains information about the cumulative use of the module and other performance-related data. The non-volatile memory is accessed through a wireless interface, such as an RF loop or IR detector, which is also associated with the module. The memory can be accessed, through wireless means, either by the printer or copier itself or by an external device. The wireless interface can also be used to access a memory which is attached to part which moves within the printer or copier, such as a roller or drum, thus avoiding the use of wire harnesses.

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Wheathampstead, United Kingdom

Austin Lloyd Richards