Abstract: A conveying roller is disposed downstream of a feeding roller in a conveying direction and conveys a sheet of recording medium to a printing position along a conveying path. A medium detecting unit is disposed between the feeding roller and the conveying roller along the conveying path and detects the sheet of the recording medium. A printing unit performs printing at the printing position. A target-rotational-amount setting unit sets a target rotational amount for feeding the sheet of the recording medium to the conveying roller, based on a rotational amount of the feeding roller measured from when the feeding roller begins feeding the sheet of the recording medium accommodated in the feeding cassette until the medium detecting unit detects the sheet of the recording medium. A controller controls the feeding roller to continue rotating until the rotational amount of the feeding roller reaches the target rotational amount.

Abstract: The printer 1 includes a controller 32 for feeding at least a sort of recording medium P to a feed mechanism, obtaining a tendency of degradation of feed accuracy with respect to at least one sort of the recording medium, calculating an adjustment value of feed accuracy based on the number of the recording medium in the past, based on the tendency, and adjusting a feed accuracy based on the calculated adjustment value.

Abstract: An encoder is adapted to be opposed to a scale provided with a plurality of marks or slits arranged in a first direction at predetermined intervals. A plurality of detectors is arranged in a second direction perpendicular to the first direction while being staggered in the first direction, each of which detects a position of each of the marks or slits, and the plurality of detectors being operable to respectively output an detection signal which has a first frequency. A first signal generator is operable to generate an first output signal which has a second frequency which is 2n-times of the fist frequency based on the detection signal output from a first detector of the plurality of detectors. A second signal generator is operable to generate a second output signal which has the second frequency based on the detection signal output from a second detector of the plurality of detectors.

Abstract: The present invention relates to a method and system for accurately indexing print receiving media of various types. A media indexing system is provided that includes a roller capable of indexing a print receiving medium in response to an indexing operation. A relationship exists between a commanded indexing operation of the roller and resultant indexing of a first type of print receiving medium. A type of print receiving medium is supplied to the media indexing system. The type of the print receiving medium is generally identified. A desired amount by which the print receiving medium should be indexed is identified. A commanded indexing operation of the roller to index by the desired amount is modified based on the type of the print receiving medium and the relationship. The print receiving can be indexed by substantially the desired amount.

Abstract: Methods and systems are provided for compensating for media indexing errors in a printing device. In one embodiment, the method comprises identifying a desired amount by which the print receiving medium should be indexed in order to print at the next location for the image being printed. The method further comprises determining an ideal indexing command for causing the indexing command based upon a compensation factor in order to compensate for imperfections in the indexing system. In this embodiment, the ideal indexing command is adjusted only once per indexing of the print receiving medium by the desired amount, and the adjusted ideal indexing command is utilized to move a roller and to index the receiving medium by the desired amount in order to print at the next location for the image being printed.

Abstract: Methods and systems are provided for compensating for media indexing errors in a printing device. In one embodiment, the method comprises identifying a desired amount by which the print receiving medium should be indexed in order to print at the next location for the image being printed. The method further comprises determining an ideal indexing command for causing the indexing system to index by the desired amount, and adjusting the ideal indexing command based upon a compensation factor in order to compensate for imperfections in the indexing system. In this embodiment, the ideal indexing command is adjusted only once per indexing of the print receiving medium by the desired amount, and the adjusted ideal indexing command is utilized to move a roller and to index the receiving medium by the desired amount in order to print at the next location for the image being printed.

Abstract: A printer having a plurality of switching mechanisms movable between a first position and a second position. A selector is associated with a carriage of the printer such that the carriage moves the selector so as to actuate at least one of the switching mechanisms to the second position when the carriage moves to the first non-printing region, and so as to actuate the at least one of the switching mechanisms to the first position when the carriage moves to the second non-printing region.