Recording method and recording apparatus

A recording method in which, while a recording head, having a dot forming element array in which N dot forming elements are aligned at constant intervals D in a secondary scanning direction which is a direction of conveyance of a recording material, is reciprocally moved in a primary scanning direction perpendicular to said secondary scanning direction, dots are formed on said recording material by said dot forming element array in accordance with recording data, and said recording material is conveyed in said secondary direction and relatively to said recording head, wherein said N is a positive integer and said interval D is a value obtained by multiplying an interval d between dots in recording resolution in said secondary scanning direction by an even number k, and also said even number k and said dot forming element number N are in prime relation to each other, said recording method comprising steps of;

• a first step of forming dots on said recording material by said dot forming element array while moving said recording head along a forward-trip or backward-trip path in said primary scanning direction;
• a second step of conveying said recording material in said secondary direction and relatively to said recording head by a secondary scanning distance of said interval d between dots;
• a third step of forming dots on said recording material by said dot forming element array while moving said recording head along a forward-trip or backward-trip path in said primary scanning direction;
• and
• a fourth step of conveying said recording material in said secondary scanning direction and relatively to said recording head by a secondary scanning distance of (2N−1)·d;
• wherein said first to fourth steps are repeated, thereby performing record.

A recording apparatus comprising:

• a recording head having a dot forming element array in which N, wherein N is a positive integer, dot forming elements are aligned at constant intervals D in a secondary scanning direction which is a direction of conveyance of a recording material;
• a head driving means for driving said dot forming elements;
• a primary scanning driving means for reciprocally moving said recording head in a primary scanning direction perpendicular to said secondary scanning direction with respect to said recording material;
• a secondary scanning driving means for conveying said recording material in said secondary scanning direction and relatively to said recording head;
• and
• a control means for controlling said head driving means, said primary scanning driving means, and said secondary scanning driving means to thereby perform recording while said recording head scans a surface of said recording material in said primary scanning direction and said secondary scanning direction;
• wherein said interval D is a value obtained by multiplying an interval d between dots in recording resolution in said secondary scanning direction by an even number k, and also said even number k and said dot forming element number N are in prime relation to each other, and that recording is performed by such repetition;
• and
• further wherein said control means controls said primary scanning driving means and said head driving means to form dots on said recording material by said dot forming element array while moving said recording head along a forward-trip path in said primary scanning direction,
• controls said secondary scanning driving means to convey said recording material in said secondary direction and relatively to said recording head by a secondary scanning distance of said interval d between dots,
• controls said primary scanning driving means and said head driving means to form dots on said recording material by said dot forming element array while moving said recording head along a backward-trip path in said primary scanning direction, and
• controls said secondary scanning driving means to convey said recording material in said secondary scanning direction and relatively to said recording head by a secondary scanning distance of (2N−1)·d.

A recording apparatus comprising:

• a recording head having a dot forming element array in which N, wherein N is a positive integer, dot forming elements are aligned at constant intervals D in a secondary scanning direction which is a direction of conveyance of a recording material;
• a head driving means for driving said dot forming elements;
• a primary scanning driving means for reciprocally moving said recording head in a primary scanning direction perpendicular to said secondary scanning direction with respect to said recording material,
• a secondary scanning driving means for conveying said recording material in said secondary scanning direction and relatively to said recording head;
• a control means for controlling said head driving means, said primary scanning driving means, and said secondary scanning driving means to thereby perform recording while said recording head scans a surface of said recording material in said primary scanning direction and said secondary scanning direction, wherein said interval D is a value obtained by multiplying an interval d between dots in recording resolution in said secondary scanning direction by an even number k, and also said even number k and said dot forming element number N are in prime relation to each other, and that recording is performed by such repetition;
• and
• further wherein said control means controls said primary scanning driving means and said head driving means to form dots on said recording material by said dot forming element array while moving said recording head along a forward-trip or backward-trip path in said primary scanning direction,
• controls said secondary scanning driving means to convey said recording material in said secondary direction and relatively to said recording head by a secondary scanning distance of said interval d between dots,
• controls said primary scanning driving means and said head driving means to form dots on said recording material by said dot forming element array while moving said recording head along a forward-trip or backward-trip path in said primary scanning direction, and
• controls said secondary scanning driving means to convey said recording material in said secondary scanning direction and relatively to said recording head by a secondary scanning distance of (2N−1)·d.