In accordance with an embedment, a printer comprises a sensor configured to detect a position of a paper conveyed in a conveyance path; a first setting module configured to set a plurality of start candidate positions which are candidates of a printing start position in a paper conveyance direction based on a sensing result of the sensor; a test printing module configured to carry out a test printing for specifying the start candidate position on the paper for each start candidate position set by the first setting module; a reception module configured to receive selection of one start candidate position from the start candidate positions specified by the test printing; and a second setting module configured to set the start candidate position received by the reception module as the printing start position.

In an example implementation, a processor-readable medium stores code representing instructions that when executed by a processor cause the processor to initiate motion of a media web in an inkjet web press, begin printing a print frame based on a start pulse from a metering device, verify that printing the print frame is complete, receive a signal from the metering device that a frame-length of the media web has been measured at the output of the press, and begin printing a new print frame based on the verification and the signal.

To provide a printing device such as an inkjet device capable of transporting a recording medium at satisfactory precision with a simple configuration. The inkjet device includes a feed amount correcting section that corrects a feed amount of a recording medium, and a control section that controls the feed amount correcting section. The feed amount correcting unit includes a moving section that moves with a movement of the recording medium in a transporting direction and a displacement sensor section that detects a displacement amount of the moving section, and the control section controls the feed amount of the recording medium based on a difference between a feed amount acquired at a time of printing and a set feed amount set in advance.

Disclosed is a thermal print apparatus including a medium detection sensor arranged from a thermal head at a distance shorter than an outer circumferential length of the platen roller, and a controller. The controller determines that the print medium is wrapped around the platen roller if the print medium is not detected by the medium detection sensor even when the print medium is fed by a feed amount at which the leading edge of the print medium reaches the medium detection sensor after starting of printing on the print medium. In this case, the print medium is fed backward by reversely rotating the platen roller.

In accordance with an embedment, a printer comprises a sensor configured to detect a position of a paper conveyed in a conveyance path; a first setting module configured to set a plurality of start candidate positions which are candidates of a printing start position in a paper conveyance direction based on a sensing result of the sensor; a test printing module configured to carry out a test printing for specifying the start candidate position on the paper for each start candidate position set by the first setting module; a reception module configured to receive selection of one start candidate position from the start candidate positions specified by the test printing; and a second setting module configured to set the start candidate position received by the reception module as the printing start position.

A printer includes: a first conveyor configured to convey a recording medium during image formation by an image former at a first conveyance speed based on a print condition of the image formation by the image former; a second conveyor configured to convey the recording medium at a second conveyance speed higher than the first conveyance speed; and a third conveyor arranged between the first conveyor and the second conveyor on a conveyance route. The third conveyor is configured to start acceleration of the recording medium after a recording region trailing end of the recording medium passes the image former and accelerate the recording medium such that a speed of the recording medium increases to the second conveyance speed not later than a time point when a leading edge of the recording medium reaches the second conveyor.

A control device which controls transportation of a continuous paper receives an operation signal according to an operation amount by which a terminal is operated and generates a drive command which controls a transport speed of the continuous paper based on the operation signal.

In an example implementation, a processor-readable medium stores code representing instructions that when executed by a processor cause the processor to initiate motion of a media web in an inkjet web press, begin printing a print frame based on a start pulse from a metering device, verify that printing the print frame is complete, receive a signal from the metering device that a frame-length of the media web has been measured at the output of the press, and begin printing a new print frame based on the verification and the signal.

In accordance with an embedment, a printer comprises a sensor configured to detect a position of a paper conveyed in a conveyance path; a first setting module configured to set a plurality of start candidate positions which are candidates of a printing start position in a paper conveyance direction based on a sensing result of the sensor; a test printing module configured to carry out a test printing for specifying the start candidate position on the paper for each start candidate position set by the first setting module; a reception module configured to receive selection of one start candidate position from the start candidate positions specified by the test printing; and a second setting module configured to set the start candidate position received by the reception module as the printing start position.

Regarding an image forming apparatus for printing an input image and including a print head having a head sensor configured to sense information from the input image printed on a print medium, there is a method of determining a head sensor position parameter in the image forming apparatus. The method includes printing a first swath of the input image on the print medium and determining the head sensor position parameter by performing a sub-method. The sub-method includes capturing, via the head sensor, a target image from the printed first swath, comparing the target image to a reference image for the first swath based upon the input image, and determining the head sensor position parameter based on a relative shift between the target image and the reference image.