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Data conversion apparatus and image recording apparatus

  • US 5,870,536 A
  • Filed: 06/17/1997
  • Issued: 02/09/1999
  • Est. Priority Date: 07/11/1995
  • Status: Expired due to Term
First Claim
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1. An image recording apparatus having recording means that performs a recording operation while scanning received image data by a recording head, said apparatus comprising:

  • conversion means for converting pixel density of said received image data at each line according to a resolution of said recording in a main-scanning direction;

    first storage means for storing the received image data whose resolution is converted by said conversion means;

    processing means for collectively performing a process for converting the resolution of the image data in sub-scanning direction at each predetermined length according to the resolution of said recording head in the sub-scanning direction and a process for converting a horizontal and vertical arrangement of the image data whose resolution is converted in the sub-scanning direction, by inputting a plurality of predetermined length of image data corresponding to a plurality of lines, which are read out from said first storage means, wherein said predetermined length is shorter than a length of image data corresponding to one line; and

    second storage means for storing the image data processed by said processing means,wherein said recording means performs a recording operation in accordance with the image data stored in said second storage means.

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