Inkjet recording apparatus
A printer ( 1 ) includes: a head frame ( 30 ); a first positioning part ( 51 ) facing to a first area ( 31 ) of the head frame ( 30 ); a second positioning part ( 52 ) facing to a second area ( 32 ) of the head frame ( 30 ); a first protruding part ( 41 ) protruding from the first area ( 31 ) toward the first positioning part ( 51 ); a second protruding part ( 42 ) protruding from the second area ( 32 ) toward the second positioning part ( 52 ); a first groove part ( 51 V) provided in the first positioning part ( 51 ) along the ejection direction; a first pressing part ( 61 ) pressing the first protruding part ( 41 ) to the first groove part ( 51 V); a second pressing part ( 62 ) pressing the second protruding part ( 42 ) to the second positioning part ( 52 ); and a first regulation part ( 71 L) and a second regulation part ( 72 L) restricting a movement of the head frame ( 30 ) in the ejection direction.
1 . An inkjet recording apparatus comprising:
an inkjet head which ejects ink;
a flat plate-shaped head frame whose thickness direction is along a first direction perpendicular to an ejection direction of the inkjet head and holding the inkjet head;
an image forming frame by which the head frame holding the inkjet head is supported;
a first positioning part provided in the image forming frame and facing in the thickness direction to a first area of the head frame on one end side in a second direction perpendicular to the ejection direction and the first direction;
a second positioning part provided in the image forming frame and facing in the thickness direction to a second area of the head frame on the other end side in the second direction;
a first protruding part protruding from the first area toward a side of the first positioning part;
a second protruding part protruding from the second area toward a side of the second positioning part;
a first groove part provided in the first positioning part along the ejection direction;
a first pressing part pressing the first protruding part to the first groove part;
a second pressing part pressing the second protruding part to the second positioning part; and
a regulation part restricting a movement of the head frame in the ejection direction.
2 . The inkjet recording apparatus according to claim 1 , wherein
the second positioning part is planar, and
the second protruding part is hemispherical.
3 . The inkjet recording apparatus according to claim 1 wherein
the first protrusion and the second protrusion each has a male screw portion, and
the head frame has female screw portions into which the male screw portions are screwed.
4 . The inkjet recording apparatus according to claim 1 , wherein
the first protruding part is provided on a downstream side of a center of the head frame in the ejection direction.
5 . The inkjet recording apparatus according to claim 1 , further comprising:
a third protruding part protruding from the first area toward a side of the first positioning part, provided at a position different from the first protruding part in the ejection direction, and facing a planar outside portion of the first groove part of the first positioning part, wherein
the first pressing part presses the first protruding part to the planer portion.
6 . The inkjet recording apparatus according to claim 1 , wherein
an odd number of the inkjet heads are arranged on both side surfaces of the head frame in a staggered manner, and
the first protruding part and the second protruding part are provided on the surface of the head frame where a small number of the inkjet heads are provided.
7 . The inkjet recording apparatus according to claim 1 , further comprising:
a second groove part provided in the second positioning part along the second direction, wherein
the second pressing part presses the second protruding part to the second groove part.
8 . The inkjet recording apparatus according to claim 1 , further comprising:
a fourth protruding part protruding from the second area toward a side of the second positioning part and provided at a position difference from the second protruding part in the ejection direction.
9 . The inkjet recording head according to claim 1 , wherein
an odd number of the inkjet heads are arranged on both side surfaces of the head frame in a staggered manner, and
the first area and the second area are provided on the surface of the head frame where a small number of the inkjet heads are provided.
10 . An inkjet recording apparatus comprising:
an inkjet head which ejects ink;
a flat plate-shaped head frame whose thickness direction is along a first direction perpendicular to an ejection direction of the inkjet head and holding the inkjet head;
a first positioning part facing in the thickness direction to a first area of the head frame on one end side in a second direction perpendicular to the ejection direction and the first direction;
a second positioning part facing in the thickness direction to a second area of the head frame on the other end side in the second direction;
a first protruding part protruding from the first area toward a side of the first positioning part;
a second protruding part protruding from the second area toward a side of the second positioning part;
a first groove part provided in the first positioning part along the ejection direction;
a first pressing part pressing the first protruding part to the first groove part;
a second pressing part pressing the second protruding part to the second positioning part; and
a regulation part restricting a movement of the head frame in the ejection direction, wherein
the first groove part is tapered in a depth direction; and
the first protruding part is hemispherical.