A system and method for paper jam prediction includes a processor, memory and a network interface. Ongoing paper jam data is received from an identified, networked multifunction peripheral. Service call data for the multifunction peripheral indicative of prior service calls is stored in the memory. A sampling window of the paper jam data prior to a service call date is defined and a point in the sampling window when no symptoms of a forthcoming paper jam were present is determined so as to define a prediction window. A relationship between paper jam data in the prediction window of the sampling window and paper jam data outside the prediction window in the sampling window is determined and incoming paper jam data is monitored relative to the relationship data. A paper jam warning is generated when monitored incoming paper jam data indicates a forthcoming paper jam on the multifunction peripheral.

A system and method for paper jam prediction includes a processor, memory and a network interface. Ongoing paper jam data is received from an identified, networked multifunction peripheral. Service call data for the multifunction peripheral indicative of prior service calls is stored in the memory. A sampling window of the paper jam data prior to a service call date is defined and a point in the sampling window when no symptoms of a forthcoming paper jam were present is determined so as to define a prediction window. A relationship between paper jam data in the prediction window of the sampling window and paper jam data outside the prediction window in the sampling window is determined and incoming paper jam data is monitored relative to the relationship data. A paper jam warning is generated when monitored incoming paper jam data indicates a forthcoming paper jam on the multifunction peripheral.

An image forming apparatus capable of performing recovery printing while avoiding wasteful discarding of printed sheets following a defective sheet. An image is formed on a sheet by an image forming section based on an input job and is inspected. An inserter inserts sheets placed thereon into sheets conveyed from the image forming section. When a defective sheet is detected, the job is interrupted, and the defective sheet and subsequent sheets already printed are discharged to a different destination from a destination of normal sheets. Resuming the interrupted job is instructed by a user, and an image to be printed on the defective sheet is formed on a sheet newly fed from a sheet feeder, and the sheet is discharged to the destination of normal sheets, and sheets placed on the inserter are discharged to the same.

A printer according to an embodiment includes a printing unit that prints on a sheet. The sheet is discharged through an outlet. The sheet is conveyed on a sheet conveyance path through the printing unit and to the outlet. A movable device is located on the sheet conveyance path upstream of the outlet in a sheet conveying direction. The movable device can move between a separation position, a proximity position, and a protruding position. A detection device detects a position of the movable device. A controller determines a conveyance abnormality of the sheet based on the state of the movable device detected by the detection device, and outputs a signal indicating the conveyance abnormality.

An image forming apparatus includes an image forming unit that forms an image on a transfer medium on the basis of image data, a feeder that feeds the transfer medium, and a control unit that manages image data and controls the image forming unit and the feeder. In a case where a base image and an overprint image are printed by the same image forming apparatus, the control unit can manage first image data of the base image and second image data of the overprint image by associating the data with each other, and when a jam of the transfer medium is detected during output of an overprint image, the control unit causes a transfer medium to which the base image is output by the image forming apparatus to be replenished for print instead of a jammed transfer medium removed by jam processing.

A print device includes a storage unit that stores feature of a print medium and print data of a page to be printed on the print medium in association with each other, a reading unit that generates medium image data by reading the print medium which is already printed before interrupt of printing after the interrupt, a setting unit that sets a print restart page based on the feature of the print medium and the medium image data, and a print unit that performs printing based on the print data after the print restart page after resolving a cause of the interrupt of printing.

A roll-fed printing assembly, a software medium, and a method of controlling a roll-fed printing assembly are disclosed. The method includes: controlling the printing to execute a first print job containing a batch of nested individual jobs; detecting a pause state during the executing of the first print job; stopping the executing of the first print job in response to the detecting of the pause state; determining, for each individual job of the first print job, whether that individual job belongs to either: a first group of individual jobs that have already been printed successfully, or to a second group of individual jobs that have not yet been printed successfully; creating a second print job by automatic re-nesting of the jobs of the second group based on a nesting criterion; and controlling the printing assembly to execute the second print job.

The present invention relates to a paper jam sensing and recovery method for a receipt printer, the method enabling accurate measuring and determining of a motor overload state, which is most problematic when jam occurs, and enabling an immediate response if an overcurrent is generated on the basis of a driving current, such that damage to the motor or a driving circuit is fundamentally prevented and, also, paper jam occurring in a peripheral part of a printer cutter can be prevented in advance, thereby blocking product damage.

A roll-fed printing assembly, a software medium, and a method of controlling a roll-fed printing assembly are disclosed. The method includes: controlling the printing to execute a first print job containing a batch of nested individual jobs; detecting a pause state during the executing of the first print job; stopping the executing of the first print job in response to the detecting of the pause state; determining, for each individual job of the first print job, whether that individual job belongs to either: a first group of individual jobs that have already been printed successfully, or to a second group of individual jobs that have not yet been printed successfully; creating a second print job by automatic re-nesting of the jobs of the second group based on a nesting criterion; and controlling the printing assembly to execute the second print job.

According to an embodiment of this invention, the following processing is performed to solve a problem of accurately determining an abnormal state in a carriage by using an acceleration sensor. Output values from a plurality of acceleration sensors mounted in locations which have low degrees of mechanical/physical coupling in a carriage and a printing apparatus main body are transformed into data in a frequency domain. Subsequently, a carriage operation abnormality and a level of the abnormal state are determined based on a plurality of acceleration values in the frequency domain and a comparison of magnitudes of the acceleration values.