Method and apparatus for preheating a thermally activated printing head

Details

Inventors: Ono, Takeshi;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Fuller; Benjamin R.
Assistant Examiner: Tran; Huan
Attorney, Agent or Firm: Fitzpatrick, Cella, Harper & Scinto

A recording apparatus for performing recording on a recording medium includes a plurality of recording elements, and a control unit for selectively providing energy having a level lower than an actual recording level to adjacent ones of the plurality of recording elements and to successively apply the energy to the same recording element when the energy is applied to the recording elements within waiting time from an end of a recording operation to a start of the next recording operation.

DETAILED DESCRIPTION It is an object of the present invention to provide a method and an apparatus for performing recording which can improve recording quality.
It is another object of the present invention to provide a method and an apparatus for performing recording which can increase a recording speed.
It is still another object of the present invention to provide a method and an apparatus for pre-heating a thermal head to keep its temperature substantially constant and keep a color development temperature of recording paper almost even to improve recording quality when recording by the thermal head is not performed.
It is still another object of the present invention to provide, in consideration of the aforementioned conventional examples, a method and an apparatus for performing effective pre-heat wherein data output to the head is adjusted during pre-heat to minimize heat storage of the head and to prevent color development of the thermal recording paper even if a substrate temperature of the thermal head becomes higher than that in a conventional apparatus.
It is still another object of the present invention to provide, in consideration of the aforementioned conventional examples, a method and an apparatus for performing recording wherein all blocks are simultaneously energized during pre-heat to shorten the pre-heat time by reducing the number of black data of pre-heat recording data to be 1/(block count N) or less.

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