Incremental printing of symbolic information – Ink jet – Controller
Patent
1997-06-17
1998-08-25
Hartary, Joseph W.
Incremental printing of symbolic information
Ink jet
Controller
347 23, B41J 205, B41J 2165
Patent
active
057987734
ABSTRACT:
A recording apparatus records an image by scanning a first recording head relative to a recording medium of a particular type. The apparatus includes the first recording head, a pattern recording controller, a reader, a restoring device, a second recording head, a discriminator and a control unit. The pattern recording controller controls recording of a predetermined pattern with the first recording head at a predetermined timing either on the recording medium or on a pattern recording medium different from the recording medium. The reader reads the predetermined pattern and the restoring device performs a discharge restoring operation of the recording head. The discriminator discriminates a recording state of the first recording head, based on the predetermined pattern read by the reader. The control unit enables the second recording head to record the image to be recorded by the first recording head, in a case that after the discriminator discriminates the recording state as being poor and thereafter the discharge restoring operation performed by the restoring device and a pattern recording operation by the pattern recording controller have been executed a predetermined number of times, the discriminator has discriminated the recording state as being still poor.
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Hiramatsu Akira
Takanaka Yasuyuki
Tanaka Kiyoharu
Canon Kabushiki Kaisha
Hartary Joseph W.
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