Image recording apparatus

1. An image recording apparatus comprising:

a conveying section including a platen which conveys a recording medium;

an image recording section which ejects an ink onto the recording medium conveyed by the conveying section, thereby performing image recording;

a moving mechanism which moves at least one of the image recording section and the conveying section to change a space between the image recording section and the conveying section, and enables a movement between a recording position in which the image recording is performed and a non-recording position in which the image recording is not performed; and

a positioning section which permits the space between the image recording section and the conveying section to have a predetermined value at the recording position;

wherein a point of application of a force with which at least one of the image recording section and the conveying section is moved by the moving mechanism is substantially coincident with the positioning section;

wherein the positioning section includes a space adjustment member which adjusts the space between the image recording section and the conveying section, and a contacting portion which contacts or is fitted with the space adjustment member, the space being determined to have the predetermined value when the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member; and

wherein the space adjustment member has a through-hole therein, and the moving mechanism comprises a wire which passes through the through-hole of the space adjustment member and connects the image recording section and the conveying section.

2. An image recording apparatus comprising:

a conveying section including a platen which conveys a recording medium;

an image recording section which ejects an ink onto the recording medium conveyed by the conveying section, thereby performing image recording;

a moving mechanism which moves at least one of the image recording section and the conveying section to change a space between the image recording section and the conveying section, and enables a movement between a recording position in which the image recording is performed and a non-recording position in which the image recording is not performed; and

a positioning section which permits the space between the image recording section and the conveying section to have a predetermined value at the recording position;

wherein a point of application of a force with which at least one of the image recording section and the conveying section is moved by the moving mechanism is substantially coincident with the positioning section;

wherein the positioning section includes a space adjustment member which adjusts the space between the image recording section and the conveying section, and a contacting portion which contacts or is fitted with the space adjustment member, the space being determined to have the predetermined value when the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member;

wherein a point of application of a force with which the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member is substantially coincident with a spot where the contacting portion contacts or is fitted with the space adjusting member; and

wherein the space adjustment member has a through-hole therein, and the moving mechanism comprises a wire which passes through the through-hole of the space adjustment member and connects the image recording section and the conveying section.

3. The image recording apparatus according to claim 2 , wherein the space adjustment member comprises a stepped pin, and the contacting portion is formed with an opening to fit with the stepped pin.

4. An image recording apparatus comprising:

a conveying section including a platen which conveys a recording medium;

an image recording section which ejects an ink onto the recording medium conveyed by the conveying section, thereby performing image recording;

a moving mechanism which moves at least one of the image recording section and the conveying section to change a space between the image recording section and the conveying section, and enables a movement between a recording position in which the image recording is performed and a non-recording position in which the image recording is not performed; and

a positioning section which permits the space between the image recording section and the conveying section to have a predetermined value at the recording position;

wherein a point of application of a force with which at least one of the image recording section and the conveying section is moved by the moving mechanism is substantially coincident with the positioning section;

wherein the positioning section includes a space adjustment member which adjusts the space between the image recording section and the conveying section, and a contacting portion which contacts or is fitted with the space adjustment member, the space being determined to have the predetermined value when the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member;

wherein the image recording section includes a recording head which ejects the ink and a head holding section which holds the recording head, and one of the head holding section and the platen is provided with the space adjustment member, and a remaining one of the head holding section and the platen is provided with the contacting portion;

wherein a point of application of a force with which the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member is substantially coincident with a spot where the contacting portion contacts or is fitted with the space adjusting member; and

wherein the space adjustment member has a through-hole therein, and the moving mechanism comprises a wire which passes through the through-hole of the space adjustment member and connects the image recording section and the conveying section.

5. An image recording apparatus comprising:

a conveying section including a platen which conveys a recording medium;

an image recording section which ejects an ink onto the recording medium conveyed by the conveying section, thereby performing image recording;

a moving mechanism which moves at least one of the image recording section and the conveying section to change a space between the image recording section and the conveying section, and enables a movement between a recording position in which the image recording is performed and a non-recording position in which the image recording is not performed; and

a positioning section which permits the space between the image recording section and the conveying section to have a predetermined value at the recording position;

wherein a point of application of a force with which at least one of the image recording section and the conveying section is moved by the moving mechanism is substantially coincident with the positioning section;

wherein the positioning section includes a space adjustment member which adjusts the space between the image recording section and the conveying section, and a contacting portion which contacts or is fitted with the space adjustment member, the space being determined to have the predetermined value when the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member;

wherein a point of application of a force with which the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member is substantially coincident with a spot where the contacting portion contacts or is fitted with the space adjusting member;

wherein the moving mechanism comprises a ball screw which extends coaxially with the space adjustment member and connects the image recording section and the conveying section; and

wherein the space adjustment member comprises a stepped pin, and the contacting portion is formed with an opening to fit with the stepped pin.

6. An image recording apparatus comprising:

a conveying section including a platen which conveys a recording medium;

an image recording section including a line-type head unit which ejects an ink onto the recording medium conveyed by the conveying section, thereby performing image recording, and a head holding section which holds the head unit;

a moving mechanism which moves at least one of the image recording section and the conveying section to change the space between the image recording section and the conveying section, and enables a movement between a recording position in which the image recording is performed and a non-recording position in which the image recording is not performed; and

a positioning section including (i) a space adjustment member which is provided for one of the head holding section and the platen and adjusts the space between the image recording section and the conveying section, and (ii) a contacting portion which is provided for a remaining one of the head holding section and the platen and permits the space between the image recording section and the conveying section to have a predetermined value at the recording position,

wherein a point of application of a force with which the moving mechanism is operated to cause the contacting portion to contact or be fitted with the space adjustment member is substantially coincident with a spot where the contacting portion contacts or is fitted with the space adjusting member,

wherein the space adjustment member has a through-hole therein, and the moving mechanism comprises a wire which passes through the through-hole of the space adjustment member and connects the image recording section and the conveying section.

7. The image recording apparatus according to claim 6 , wherein the space adjustment member comprises a stepped pin, and the contacting portion is formed with an opening to fit the stepped pin.