Abstract: A printing system includes a printing unit performing printing on a sheet, a conveyance mechanism, a control unit, and a selection unit causing a user to select any one of a plurality of methods whose maximum numbers of sheets existing in the conveyance mechanism at the same time are different from each other. The control unit controls the printing unit and the conveyance mechanism to perform double-side printing processing depending on any one of the methods. The control unit performs double-side printing processing in accordance with the method selected by the selection unit.

Abstract: A method for controlling tension in a print media in a tension zone of a printing system comprises enabling an active tension control mode until the tension in the print media is in a stable state for a given period of time. Then, the active tension control mode is disabled and a synchronized control mode is enabled. The tension in the print media is monitored to determine if the tension exceeds a tension inner band but does not exceed a tension outer band while the synchronized control mode is enabled. The speed of a drive roller is adjusted in response to this determination. The tension in the print media is also monitored to determine if the tension exceeds the tension outer band while the synchronized control mode is enabled. The synchronized control mode is disabled in response to this determination and the active tension control mode is enabled.

Abstract: A printer includes a feeding portion configured to feed a printing medium, a printing portion including a plurality of heating elements configured to perform printing of one line at a time on the printing medium, and a processor configured to specify numbers of ON dots for at least a first specified block and a second specified block, specify first speeds that respectively correspond to at least the first specified block and the second specified block based on the numbers of ON dots, set a second speed for the second specified block based on the first speeds that respectively correspond to the first specified block and the second specified block, such that the printing medium is fed at the first speed for the first specified block when the printing of the first specified block is performed, and control the feeding portion and the printing portion.

Abstract: An apparatus for imprinting a sheet web includes two cylinders that rotate with a circumferential speed that corresponds to the speed of the web and which support the web over a specified angle region. Contactless printing heads are arranged side by side and at a distance to the circumferential surface of the associated cylinder and positioned transverse to the rotational direction of the associated cylinder. The printing heads each have a face oriented tangential to the associated cylinder and a center line that is essentially radial to the circumferential surface of the associated cylinder. A guiding device includes first and second guide devices associated with the respective cylinders to guide the web. Each guide device includes at least one pressure roller that fits against the surface of the associated cylinder and an element arranged to pull the web tangentially from the circumferential surface of the associated cylinder along a tangential path section.

Abstract: A printer capable of printing with high quality by driving the drive motor according to information about a drive current to be applied to a drive motor of a platen roller to feed the printing medium, each of which has the information. Accordingly, the printer comprises the printing medium discrimination sensors to read information about the drive current from the printing medium and the control circuit to adjust the drive current to be applied to the feeding motor according to the information about the drive current for the printing medium.

Abstract: In an inkjet printer there is a trade off between speed and quality. Higher speed can be achieved at the expense of quality as inkjet droplets deposited are distorted in shape and or placement position if the relative velocity between the inkjet nozzles and the printing medium is simply increased. The velocity above which distortion occurs is termed threshold velocity. A feed mechanism that varies the printing medium advance rate to allow printing at below threshold velocity while maintaining a high average feed rate is described. By advancing the printing medium at a periodically varying velocity, with the printing medium velocity lower than the threshold velocity, the problem is avoided.

Abstract: A media handling system having an endless belt which carries a media sheet through a print zone achieves improved media advance accuracy by including closed loop feedback control. The position of either a drive shaft which rotates the endless belt or the endless belt itself is monitored to provide feedback to a drive motor. The drive motor is linked to the drive shaft through a gear train. The endless belt is rotated by the drive shaft, either directly, or through rollers mounted to the drive shaft.