Recording apparatus and recording position correcting method
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United States of America Patent
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Aug 19, 2003
Grant Date -
N/A
app pub date -
Dec 20, 1999
filing date -
Dec 21, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a printer for forming an image by means of main scanning as a reciprocating operation of a recording head and sub-scanning as an operation for feeding a recording medium, an image recording position is automatically and accurately corrected in a main scanning direction and a sub-scanning direction. To achieve this, a reference image extending in the sub-scanning direction is first formed at a first predetermined position on the recording medium during a forward operation of the recording head, while particular images are formed at second predetermined positions on the recording medium during the reciprocating main-scanning operations of the recording head, the first predetermined position being different from that of the second predetermined positions. Next, the reference image and each of the images formed during each of the reciprocating operations are read to measure the interval in the main scanning direction between the reference image and each of the images formed on the recording medium during the reciprocating operations in order to calculate the amount of offset of each image recording position during the reciprocating main-scanning operations, thereby correcting data on the recording images or timings for recording on the recording medium.
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