Recording apparatus, computer readable medium storing thereon recording control program and recording method

A recording apparatus comprising:

• a carriage having a recording head thereon and being capable of reciprocably moving over a recording medium to a main-scanning direction;
• a recording medium conveying unit being capable of conveying the recording medium to a sub-scanning direction;
• a first detecting unit disposed upstream than the recording medium conveying unit in the sub-scanning direction and being capable of detecting the front edge and the rear edge of the recording medium in the sub-scanning direction, which is conveyed to the sub-scanning direction by the recording medium conveying unit;
• a second detecting unit placed on the carriage and being capable of detecting the end of the recording medium out of contact therewith downstream than the first detecting unit;
• and
• a recording control unit that performs a control to form dots by the recording head on a recording surface of the recording medium based on recording data as the carriage is reciprocated to the main-scanning direction and a control to convey the recording medium by the recording medium conveying unit to the sub-scanning direction by a predetermined mount of conveyance so that a recording on the recording surface of the recording medium is achieved, wherein
• the recording control unit previously stores as a first correction value a distance between a detecting point of the second detecting unit, which is physically measured in a manufacturing process of the recording apparatus and the uppermost nozzle of the nozzle array of the recording head in the sub-scanning direction,
• the recording control unit logically measures a distance in the sub-scanning between the detecting point of the first detecting unit and the detecting point of the second detecting unit based on the amount of conveyance for a period between a time point at which the first detecting unit detects the rear edge and a time point at which the second detecting unit detects the rear edge and stores the same as a second correction value, and
• the recording control unit starts a control to mask dot formation by the recording head at a time when the recording medium is conveyed by the amount of conveyance corresponding to a distance obtained by adding the second correction value to the first correction value after the rear edge of the recording medium in being recorded is detected by the first detecting unit.

In a recording apparatus including:

• a carriage having a recording head including a nozzle array with a plurality of nozzles thereon and being capable of reciprocably moving over a recording medium to a main-scanning direction;
• a recording medium conveying unit that conveys the recording medium to a sub-scanning direction intersecting the main-scanning direction;
• a first detecting unit disposed upstream than the recording head in the sub-scanning direction that detects at least a rear edge of the recording medium of sub-scanning direction;
• and a second detecting unit placed on the carriage that detects at least the rear edge of the recording medium downstream than the first detecting unit in the sub-scanning direction, a computer readable medium storing thereon a recording control program that causes the nozzles of the recording head to eject ink onto a recording surface on the recording medium based on recording data as the carriage is reciprocated to the main-scanning direction and that causes the recording medium conveying unit to convey the recording medium to the sub-scanning direction by a predetermined amount of conveyance, the computer readable medium storing thereon the recording control program causes the computer to perform the steps of:
• storing as a first correction value a distance between a detecting point of the second detecting unit and the uppermost nozzle among the plurality of nozzles of the nozzle array of the recording head in the sub-scanning direction before performing the recording;
• causing the recording medium conveying unit to convey the recording medium before performing the recording, calculating a distance between the detecting point of the first detecting unit and the detecting point of the second detecting unit based on the amount of conveyance of the recording medium for a period between a time point at which the first detecting unit detects the rear edge and a time point at which the second detecting unit detects the rear edge and storing the same as a second correction value;
• and
• starting a control to mask dot formation by the recording head at a time when the recording medium is conveyed by the amount of conveyance corresponding to a distance obtained by adding the second correction value to the first correction value after the rear edge of the recording medium in being recorded is detected by the first detecting unit.

In a recording apparatus including:

• a carriage having a recording head thereon and being capable of reciprocably moving over a recording medium to a main-scanning direction;
• a recording medium conveying unit being capable of conveying the recording medium to a sub-scanning direction;
• a first detecting unit disposed upstream than the recording medium conveying unit in the sub-scanning direction and being capable of detecting the front edge and the rear edge of the recording medium in the sub-scanning direction, which is of sub-scanning direction;
• and a second detecting unit placed on the carriage and being capable of detecting the end of the recording medium out of contact therewith downstream than the first detecting unit, a computer readable medium storing thereon a recording control program that causes the computer to perform a control to form dots by the recording head on a recording surface of the recording medium based on recording data as the carriage is reciprocated to the main-scanning direction and a control to convey the recording medium by the recording medium conveying unit to the sub-scanning direction by a predetermined mount of conveyance so that a recording on the recording surface of the recording medium is achieved, the computer readable medium storing thereon the recording control program comprising the steps of:
• previously storing as a first correction value a distance between a detecting point of the second detecting unit, which is physically measured in a manufacturing process of the recording apparatus and the uppermost nozzle of the nozzle array of the recording head in the sub-scanning direction;
• logically measuring a distance in the sub-scanning between the detecting point of the first detecting unit and the detecting point of the second detecting unit based on the amount of conveyance for a period between a time point at which the first detecting unit detects the rear edge and a time point at which the second detecting unit detects the rear edge and storing the same as a second correction value;
• and
• starting a control to mask dot formation by the recording head at a time when the recording medium is conveyed by the amount of conveyance corresponding to a distance obtained by adding the second correction value to the first correction value after the rear edge of the recording medium in being recorded is detected by the first detecting unit.

In a recording apparatus including:

• a carriage having a recording head including a nozzle array with a plurality of nozzles thereon and being capable of reciprocably moving over a recording medium to a main-scanning direction;
• a recording medium conveying unit that conveys the recording medium to a sub-scanning direction intersecting the main-scanning direction;
• a first detecting unit disposed upstream than the recording head in the sub-scanning direction that detects at least a rear edge of the recording medium of sub-scanning direction, and a second detecting unit placed on the carriage that detects at least the rear edge of the recording medium downstream than the first detecting unit in the sub-scanning direction, wherein the nozzles of the recording head ejects ink onto a recording surface on the recording medium based on recording data as the carriage is reciprocated to the main-scanning direction and the recording medium conveying unit conveys the recording medium to the sub-scanning direction by a predetermined amount of conveyance, a recording method comprising:
• storing as a first correction value a distance between a detecting point of the second detecting unit and the uppermost nozzle among the plurality of nozzles of the nozzle array of the recording head in the sub-scanning direction before performing the recording;
• causing the recording medium conveying unit to convey the recording medium before perforating the recording, calculating a distance between the detecting point of the first detecting unit and the detecting point of the second detecting unit based on the amount of conveyance of the recording medium for a period between a time point at which the first detecting unit detects the rear edge and a time point at which the second detecting unit detects the rear edge and storing the same as a second correction value;
• and
• stating a control to mask dot formation by the recording head at a time when the recording medium is conveyed by the amount of conveyance corresponding to a distance obtained by adding the second correction value to the first correction value after the rear edge of the recording medium in being recorded is detected by the first detecting unit.