JP2002019216A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder in which the interval can be adjusted while keeping a head for recording on a recording medium to face the recording medium at all times. SOLUTION: The recorder provided with a head 111 for recording an image on a sheet comprises carriage shafts 103, 107 arranged in parallel in a direction intersecting the moving direction of the sheet 123, a carriage 105 subjected to movement control in the axial direction while being supported on the carriage shafts 103, 107, a guide post 122 fixed to the carriage 105 movably in a direction orthogonal to the axial direction of the carriage shafts 103, 107, a head 111 supported on one end side of the guide post 122 oppositely to the sheet 123, and a head movement mechanism section arranged on the carriage 105 to engage with the guide post 122 supporting the head 111 and adjusting the interval between the head 111 and the sheet 123 by imparting a moving force in a direction orthogonal to the axial direction of the carriage shafts 103, 107.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a recording apparatus applied to an image recording apparatus such as a printer and a copying machine.

[0002]

2. Description of the Related Art As a conventional recording apparatus, for example, Japanese Patent Application Laid-Open No. Hei 5-24304 discloses a head having a nozzle (not shown) for ejecting ink as a recording means, as shown in FIGS. The head 227 is attached between the head 227 and the platen roller 202 as means for keeping the distance between the head 227 and the platen roller 202 constant according to the thickness of the sheet when the sheet as the recording medium is transported. A recording apparatus is disclosed which includes a carriage shaft 209 for guiding the carriage 220 in a direction orthogonal to the sheet conveyance direction, and eccentric shafts 211 are disposed at both ends of the carriage shaft 209.

In this recording apparatus, a head 227 having nozzles is provided on an upper surface of a plate-shaped carriage 220. Further, the carriage 220 has two guide guide shafts penetrating between both side surfaces of the carriage 220, that is, a platen roller. 2
The timing belt 226 is guided by the carriage shaft 209 and the guide shaft 210 close to the 02 side in the direction of arrow D, and interlocks with the rotation of the carriage motor 223 disposed below the carriage shaft 209 and the guide shaft 210.
And the recording is performed on the sheet by the head 227.

[0004] At both ends of the carriage shaft 209, there are eccentric shafts 211 provided eccentrically to the center axis of the carriage shaft 209 and supported by a pair of side plates 201, and function as first adjusting means.

By rotating the carriage shaft 209, the center axis of the carriage shaft 209 and the platen roller 2 are moved.
02, that is, the distance between the platen roller 202 and the carriage 220 and the head 227 positioned in the direction orthogonal to the direction of the arrow D on the carriage shaft 209. 2
02 and the carriage shaft 209 or the head 227 can be kept constant.

A large-diameter cylindrical portion 215 is fitted and fitted to one end of the carriage shaft 209, and a small-diameter cylindrical portion 214 is fitted and fitted to the eccentric shaft 211. Therefore, one end of the eccentric shaft 211 is supported by the one side plate 201 via the small-diameter cylindrical portion 214.

[0007] A gear 212 is mounted on the small-diameter cylindrical portion 214 protruding from the side plate 201.

The gear 112 and the small-diameter cylindrical portion 214 and the large-diameter cylindrical portion 215 are integrated. In addition, the small-diameter cylindrical portion 2
14 is eccentric with respect to the large diameter cylindrical part 215.

An adjustment lever 213 attached to one of the side plates 201 via a support shaft 213a is a lever main body 21.
8 and a gear portion 217.
Gear portion 217 and the gear 212 mesh with each other,
It functions as a second adjusting means.

That is, by rotating the adjustment lever 213 to a predetermined position, the carriage shaft 209 is rotated via the gear 212, the small-diameter cylindrical portion 214, and the large-diameter cylindrical portion 215, and the platen roller 202 and the head 227 are rotated. The distance of the
That is, the distance is adjusted so that the distance can be kept constant.

The first adjustment by the first adjusting means and the second adjustment by the second adjusting means allow the platen roller 202 and the carriage shaft 209 to be moved at the time of shipment from a factory or by a user. For example, it can be set at a desired parallel distance between the side plates 201 according to the thickness of the sheet.

[0012]

However, in the above-described conventional example, the head 2 is fixed to the platen roller 202.
27, and the distance between the platen roller 202 and the head 227 is adjusted by eccentric shafts 211 provided at both ends of the carriage shaft 209.

That is, the eccentric shaft 211 causes the carriage shaft 2
09 is eccentrically operated.
When the carriage 9 is eccentric, the plate-shaped carriage 220 into which the carriage shaft 209 is inserted is attached to the platen roller 20.
2 will swing.

For this reason, the direction of the head 227 disposed on the carriage 220 also swings, and the direction (angle) to the sheet guided by the platen roller 202 changes.

Therefore, since the direction (angle) of the nozzle (not shown) of the head 227 to the position directly facing the paper changes, the shape of characters or the like recorded on the paper surface of the paper becomes abnormal (crushed, etc.). was there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in consideration of the above-described circumstances. An apparatus is provided.

[0017]

According to the first aspect of the present invention,
In a recording apparatus provided with a head for recording an image on a recording medium, a carriage axis provided in a direction intersecting with and in parallel with a transport direction of the recording medium, and an axis of the carriage axis supported by the carriage axis A carriage that is controlled to move in the direction, a guide member that is attached to the carriage movably in a direction perpendicular to the axial direction of the carriage shaft, and one end of the guide member that is supported in a state facing the recording medium. A head that is arranged on the carriage and that engages with a guide member that supports the head and that applies a moving force in a direction orthogonal to the axial direction of the carriage shaft to adjust a distance between the head and the recording medium; And a transfer mechanism.

According to the present invention, a guide member is attached to the carriage so as to be movable in a direction perpendicular to the axial direction of the carriage shaft, and the guide member is engaged with the guide member supporting the head by the head transfer mechanism. The distance between the head and the recording medium is adjusted by applying a moving force to a member in a direction perpendicular to the axial direction of the carriage shaft. Accordingly, it is possible to adjust the interval while always maintaining the position of the head relative to the recording medium by the operation of the head transfer mechanism.

According to a second aspect of the present invention, in the recording apparatus according to the first aspect, the head transfer mechanism section includes a plurality of stages of a plurality of stages which are arranged on the carriage and abut against rollers mounted on the other end of the guide member. A disk-shaped cam having a cam surface, and an operation handle for rotating the disk-shaped cam to displace a guide member supporting the head are provided.

According to the present invention, by operating the operation handle to rotate the disc-shaped cam, the cam surface of the disc-shaped cam which contacts the roller attached to the other end of the guide member changes. Thus, it is possible to adjust the interval over a plurality of stages while always maintaining the position of the head with respect to the recording medium at the directly facing position.

According to a third aspect of the present invention, in the recording apparatus according to the first aspect, the head transfer mechanism is provided on the carriage and includes a plurality of stages that abut on a roller attached to the other end of the guide member. A plate-like cam having a cam surface;
An operation handle for changing a contact position between the plurality of cam surfaces and the roller by sliding the plate-like cam is provided.

According to the present invention, by operating the operation handle and sliding the plate-like cam, the cam surface of the plate-like cam that contacts the roller attached to the other end of the guide member changes. Thus, as in the second aspect of the invention, it is possible to adjust the interval over a plurality of stages while always maintaining the position of the head with respect to the recording medium at the directly facing position.

According to a fourth aspect of the present invention, in the recording apparatus according to the first aspect, the head transfer mechanism is rotatably disposed on the carriage and provided on a rotatable guide member supporting the head. An idler gear body meshed with a gear, and an operation handle for rotating the transfer gear via the idler gear body and displacing the guide member together with the transfer gear are provided.

According to the present invention, by rotating the operation handle, the idler gear is also rotated, and the transfer gear meshed with the idler gear is also displaced while rotating. Can be continuously adjusted (corresponding to the gear pitch of the transfer gear) while always maintaining the right position.

According to a fifth aspect of the present invention, in the recording apparatus according to the second or third aspect, the head transfer mechanism is in an engagement state between a roller attached to the other end of the guide member and the cam surface. And a biasing spring for maintaining

According to the present invention, the engagement between the roller attached to the other end of the guide member and each of the cam surfaces can be constantly maintained by the urging force of the urging spring. , The displacement force is reliably transmitted to the roller attached to the other end of the guide member, and the interval adjustment of the plurality of heads can be performed without any trouble.

[0027]

Embodiments of the present invention will be described in detail below.

(First Embodiment) (Configuration) FIG. 1 is a schematic sectional view of a recording apparatus according to the first embodiment, and FIG. 2 is a schematic perspective view of the recording apparatus according to the first embodiment.

As shown in FIG. 1, the main body 101 of the recording apparatus according to the first embodiment is provided with a platen 110 provided with a large number of holes 110a in a flat plate shape on both sides (FIGS. 1 and 2). Of the support frame 109
, And the flatness of the sheet 123 as a recording medium is ensured by the surface of the platen 110.

The platen 110 also serves as a guide for moving the paper 123, and the paper 123 is attracted by a fan 124 (negative pressure) provided in the main body 101.
A large number of holes 11 from the surface side of the platen 110
The platen surface is moved while being adsorbed on the surface of the platen 110 by an air flow generated toward the fan 124 through the line 0a.

Further, a substantially box-shaped carriage 105 is arranged near the surface of the platen 110.

On the upper portion of the carriage 105, a round bar-shaped upper carriage shaft 103 for guiding the movement of the carriage 105 in the main scanning direction (the direction of the arrow A shown in FIG. 2) is mounted on the support frame 109 of the main unit 101. The fixed upper carriage shaft fixing plate 102 is supported along the arrow A direction.

Similarly, at the lower portion of the carriage 105, a round bar-shaped lower carriage shaft 107 paired with the upper carriage shaft 103 is fixed by a lower carriage shaft fixing plate 108 fixed to a support frame 109 of the main unit 101. It is supported along the direction of arrow A.

The movement guide of the carriage 105 in the main scanning direction is provided on the upper and lower wall surfaces of the carriage 105 in FIG. 1 and FIG. 2 via support shafts 104a and 106a. A pair of rotatable bearings 104 and a pair of two bearings 106 are slidably brought into contact with the outer periphery of the upper carriage shaft 103 and the lower carriage shaft 107, respectively. In the first embodiment, one portion of the carriage 1 is provided at the center of the upper wall surface of the carriage 105.
A pair of bearings 104, 106, 106 are arranged at two places at both ends of the lower wall 05, for a total of three places.

A head 111 occupying a substantially rectangular parallelepiped space as a recording means is attached to a flat base 105a facing the platen 110 of the carriage 105 so as to be movable in the direction of arrow B shown in FIG. I have.

As the head 111, for example, red,
A color printing head in which three color inks of green and blue are respectively stored and ejected toward the paper 123 is arranged in the direction of arrow C shown in FIG. It can be configured using one cartridge that stores ink and discharges it toward the paper 123.

1 and 2, a pair of guide posts 122, which are guide members, are provided upright at predetermined intervals in FIGS. 1 and 2 toward the carriage 105 side. That is, the circular bottom flange portion 122a of the guide post 122 is
1 is fixed to the back.

On the base 105a of the carriage 105, a pair of guide column receiving cylinders 121 is arranged in a position corresponding to the pair of guide columns 122 and the guide columns 122 are slidably pierced in the direction of arrow B. To arrow B
It stands along the direction. Both guide pillar receiving cylinders 121
Also, a circular bottom flange portion 121a is fixed to the base portion 105a using a screw 150.

Then, a spring receiving disk 119 is attached to an end region of the guide column 122 which projects sideways from the guide column receiving cylinder 121 along the direction of arrow B, and this spring receiving disk 119 and the guide column receiving member are attached. By arranging the coil-shaped spring 120 so as to wind the guide column 122 between the inner bottom portion of the cylinder 121 and the guide column 122, the guide column 122 is always positioned at the arrow B.
Along the direction (in a direction opposite to the platen 110).

Further, a slit groove 123 is formed in an end portion of each of the guide posts 122 in a bifurcated manner, and a roller 117 is disposed in the slit groove 123.
7 is rotatably mounted with the shaft 118 as a support shaft.

The carriage 105 is further provided with FIG.
As shown in FIG. 2, a pair of support side plates 1
Reference numeral 25 stands upright along the same direction as the guide column receiving cylinder 121. The operation shaft 114 is rotatably supported by fitting both ends of the operation shaft 114 between bearings 115 provided at positions corresponding to the pair of support side plates 125, respectively, and one end (upper end) of the operation shaft 114 will be described later in detail. However, an operation handle 113 on which an index (for example, a number such as 1, 2, 3, etc.) indicating an operation position with respect to the head 111 is displayed on the outer periphery is fitted.

The operating shaft 114 is located at a position where it can contact the roller 117 of the pair of guide columns 122.
For example, a pair of disc-shaped cams 116 each having a cam surface whose distance from the center of the operation shaft 114 is different in three stages are fitted using, for example, an adhesive, and the cam surfaces of both disc-shaped cams 116 are fixed to the two rollers 117. Of the operation handle 11
By the rotation operation 3, the positions of the cam surfaces of the two disk-shaped cams 116 are changed to three stages (operation positions 1, 2, and 3).

The operation handle 113, the operation shaft 114,
The disk cam 116 constitutes a transfer mechanism of the head 111.

A shaft 118 for supporting the roller 117
The center line of the guide column 122 to which is attached and the center line of the operation shaft 114 intersect at right angles.

The support side plate 1 below the carriage 105
A part of an endless transfer belt 153 constituting a transfer means of the carriage 105 is fixed to a belt receiving portion 152 provided on the lower surface side of the lower surface 25 in a penetrating state, and the transfer belt 153 is not shown. The driving means is driven in the direction of arrow A shown in FIG. That is, the carriage 105
Are driven together with the transfer belt 153 in the direction of arrow A shown in FIG.

The arrangement of the transfer belt 153 of the transfer means may be, for example, a wall surface on the opposite side of the head 111 of the carriage 105, other than the arrangement shown in FIG. 2, and is not particularly limited.

(Operation) Next, the operation of the recording apparatus according to the first embodiment will be described. As shown in FIG. 1, the sheet 123 is moved in the direction of arrow C by a moving mechanism (not shown) while being attracted by the suction force (negative pressure) of the fan 124 on the platen 110 surface. In this case, since the thickness of the paper 123 is not constant depending on the use of the user, the distance between the paper 123 and the head 111 needs to be a distance that meets the specifications of the head 111.

The carriage 1 supporting the head 111
05 is driven by a transfer belt 153 as the transfer means, guided by the upper carriage shaft 103 and the lower carriage shaft 107 via the bearings 104 and 106, and is guided along the upper carriage shaft 103 and the lower carriage shaft 107. Movement for printing in the direction of arrow A is repeated, and in this state, the head 111 is operated to discharge ink from the ink head portion (not shown) of the head 111 toward the paper 123, and a predetermined character is printed on the paper surface. Record (print).

In the recording apparatus of the first embodiment, the distance between the head 111 and the sheet 123 is
When adjusting according to the thickness of the sheet 23, the operation handle 113 is turned to adjust the position of the cam surfaces of the two disk-shaped cams 116 according to the thickness of the paper 123.

That is, when the operation handle 113 is turned to change the position of the cam surface of the two disk-shaped cams 116 which come into contact with the two rollers 117 as shown in FIG.
17, the two guide posts 122 are interlocked and smoothly displaced without twisting in the direction of arrow B, whereby the carriage 105 and the head 111 are also displaced while maintaining the parallelism with the platen 110. 111
Is changed to an appropriate interval according to the thickness of the sheet 123.

The numerical values (1, 2, 3, etc.) of the indices attached to the operation handle 113 are at positions synchronized with a plurality of (for example, three) steps of the disk cam 116.

Therefore, the sheet 12 adsorbed on the platen 110 can be operated only by a simple operation of turning the operation handle 113.
When the distance between the head 3 and the head 111 is, for example, the operation position 1, the space is used for the sheet 123 having the thinnest paper thickness, and the operation position 2
When the operation is performed, the adjustment can be performed for the medium-thick paper 123, and when the operation position is set to 3, the adjustment can be performed for the thickest paper 123. The disc-shaped cam 1
It is needless to say that 16 can be set to an arbitrary number of stages such as two stages and four stages in addition to three stages.

In the first embodiment, the roller 1
17 and the cam surface of the disc-shaped cam 116 are always in contact with each other due to the urging force of the spring 120.
By adopting, the frictional resistance can be reduced even when the cam surface of the disc-shaped cam 116 is frequently switched, whereby the durability can be improved.

(Effects) According to the recording apparatus of the first embodiment, the paper 123 and the head 111 adsorbed on the platen 110 can be simply operated by turning the operation handle 113.
Can be easily adjusted to an optimum interval according to the thickness of the sheet 123.

Further, since the movement guide of the head 111 in the direction of the arrow B is also performed by the two guide columns 122 spaced at a fixed interval, the parallelism of the head 111 to the platen surface can be ensured.

Further, since the roller 117 is arranged on the contact surface with the disc-shaped cam 116, the durability of this mechanism can be improved.

The operating handle 113 is configured to be driven by an automatic driving mechanism using a gear, a driving motor, and the like.
It is also possible to adopt a configuration in which a drive signal corresponding to the thickness of the head 3 is supplied to the drive motor to automatically switch the interval between the head 111 and the platen surface.

(Embodiment 2) (Configuration) A recording apparatus according to Embodiment 2 will be described with reference to FIGS. FIG. 4 is a schematic sectional view of the recording apparatus according to the second embodiment, and FIG. 5 is a schematic perspective view of the recording apparatus according to the second embodiment. In the recording apparatus according to the second embodiment, elements having the same functions as those of the recording apparatus according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the recording apparatus according to the second embodiment, as shown in FIG. 4, a pair of carriage pillars 127 are disposed along upper and lower ends on the rear side of the carriage 105 along the arrow B direction. It is characterized in that a cam lever 130 which constitutes a transfer mechanism to which a plate-shaped operation handle (operation handle) 132 is adhered and fixed is slidable along the direction of arrow C between 127.

The cam lever 130 has a pair of upper and lower long grooves 133 formed along the direction of arrow C. A pair of cam lever guides 131 are provided near the projecting ends of the pair of carriage columns 127 by bonding or press fitting. Long groove 1
The cam lever 130 is slidable in the direction of arrow C within the range of the length of the long groove 133.

A pair of plate-like cams 129 are provided on one end surface of the cam lever 130 so as to be in contact with the outer circumferences of the rollers 117 disposed on the guide column 122, respectively.

Each of the pair of plate-like cams 129 has two steps (cam surfaces) 129b and 129c formed on the end face 130a of the cam lever 130 on the carriage 105 side, and has a total of three steps (the end face 130a and the step face). Part 129b and step part 1
29c). Other configurations are the same as those of the first embodiment.

(Operation) According to the second embodiment, the cam lever 130 with the operating handle 132 is slid in the direction of the arrow C, and the end faces 13 of the two cams 129 are moved.
0a, the step 129b or the step 129c is brought into contact with the rollers 117, respectively, so that the head 111
Is moved in the direction of arrow B while maintaining the parallelism with the platen 110, and the paper 1 adsorbed on the platen 110 is moved.
The space between the head 23 and the head 111 can be easily adjusted to an optimum space according to the thickness of the sheet 123.

(Effect) According to the recording apparatus of the second embodiment, the platen 1
The distance between the sheet 123 and the head 111 that is attracted to the head 10 can be easily adjusted to an optimum distance according to the thickness of the sheet 123. Further, since the plate-like cam lever 130 is used, the number of parts can be reduced and the space can be saved.

Third Embodiment (Structure) FIGS. 6 to 8 show a recording apparatus according to a third embodiment.

FIG. 6 is a schematic sectional view of the recording apparatus according to the third embodiment, FIG. 7 is a partial sectional view of the transfer switching section, and FIG. 8 is a schematic plan view of the transfer switching section.

In the recording apparatus according to the third embodiment,
Elements having the same functions as those of the recording apparatus according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 6, the recording apparatus according to the third embodiment has a pair of transport gears 136 arranged at a predetermined distance behind the head 111 facing the platen 110.
One end of the shaft portion 136a is a washer 142 and a screw 143.
Are attached along the direction of arrow B and rotatably.

The shaft 136a of each transfer gear 136 passes through a hole formed in the base 105a of the carriage 105, and an arrow B
The transfer gears 136 protrude laterally along the direction such that the teeth of each transfer gear 136 are located outside the base 105a (to the right of the base 105a in FIG. 6).

Further, a gear receiving plate 140 which forms a space for moving the transfer gear 136 with the base 105a is mounted outside the base 105a using bolts 144. The shafts 136a of the pair of transfer gears 136
The other end is screwed to the gear receiving plate 140 movably along the direction of arrow B, and the screwing can be finely adjusted by a fine screw E.

At a position occupying the middle between the two transfer gears 136, one end is rotatably fitted to the base 105a, and the other end projects sideways through the gear receiving plate 140 in the direction of arrow B. An idler shaft 141 is provided, and as shown in FIG. 8, a substantially cylindrical idler gear body 135 constituting a transfer mechanism is fixed to the outer periphery of the idler shaft 141. Further, an operation handle 134 is integrally attached to the other end of the idler shaft 141 by bonding or the like.

The outer periphery of the idler gear body 135 is provided with gear portions that mesh with the two transfer gears 136, respectively.

A ball 138 urged toward the gear receiving plate 140 by a ball spring 139 disposed in the idler gear 135 is disposed at the joint between the idler gear 135 and the gear receiving plate 140. .

A required number (arbitrary number) of ball receiving recesses 140a are provided in a circular shape on the surface of the gear receiving plate 140 on the side of the idler gear body 135 in contact with the balls 138. When the idler gear body 135 is rotated at a fixed position together with the idler shaft 141, the stop position of the idler gear body 135 can be recognized with a click feeling.

Between the head 111 and the base 105 a of the carriage 105, for example, two springs 137 are arranged at an interval.
1 is constantly biased toward the platen 110 side. Other configurations are the same as those of the first embodiment.

(Operation) According to the recording apparatus of the third embodiment, the operation handle 134 is rotated to a position for securing a distance corresponding to the thickness of the sheet 123. At this time, as the operation handle 134 rotates, the idler shaft 141 and the idler gear 135 at a fixed position also rotate, and the rotation of the idler gear 135 is transmitted to the two transfer gears 136, respectively.

Therefore, the two transfer gears 136 are always driven to rotate, and by their own rotation, these two transfer gears 136 move from the position in the left column of FIG. 7 in the thrust direction (arrow) as shown in the right column of FIG. (In the direction B) continuously (steplessly unlike the first and second embodiments) according to the gear pitch of the transfer gear 136.

Due to the displacement of the two transfer gears 136, the head 111 is also separated in the direction of arrow B while maintaining the parallelism to the platen 110, and the distance between the head 111 and the sheet 123 can be increased.

When the rotation direction of the operation handle 134 is opposite to that described above, the head 111 can be brought closer to the platen 110 and the distance between the head 111 and the paper 123 can be reduced.

(Effect) According to the third embodiment, by rotating the operation handle, the idler gear 13
5 also rotates, and the transfer gear 136 meshed with the idler gear body 135 is also displaced while rotating, so that the position of the head 111 with respect to the sheet 123 is constantly maintained and continuously adjusted (the gear pitch of the transfer gear). According to)
The interval can be adjusted.

[0081]

According to the first aspect of the present invention, there is provided a recording apparatus capable of adjusting the interval while always maintaining the position of the head with respect to the recording medium by the operation of the head transfer mechanism. be able to.

According to the second and third aspects of the present invention, there is provided a recording apparatus capable of adjusting an interval over a plurality of stages while always keeping the position of a head with respect to a recording medium at a directly facing position. Can be.

According to the fourth aspect of the present invention, it is possible to provide a recording apparatus capable of adjusting the interval steplessly while always keeping the position of the head with respect to the recording medium directly facing the recording medium.

According to the fifth aspect of the present invention, the displacement force is reliably transmitted from the disc-shaped cams or the respective cam surfaces of the plate-shaped cams to the roller attached to the other end of the guide member, and the plurality of heads are provided. It is possible to provide a recording apparatus capable of executing the interval adjustment over the steps without any trouble.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view illustrating a configuration of a recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view of the recording apparatus according to the first embodiment.

FIG. 3 is an operation explanatory view of the transfer means of the first embodiment.

FIG. 4 is a schematic sectional view illustrating a configuration of a recording apparatus according to a second embodiment of the present invention.

FIG. 5 is a schematic perspective view of a recording apparatus according to a second embodiment of the present invention.

FIG. 6 is a schematic sectional view of a recording apparatus according to a third embodiment of the present invention.

FIG. 7 is a partial cross-sectional view for describing an operation of a transfer switching unit of the recording apparatus according to the third embodiment.

FIG. 8 illustrates an idler gear body of the recording apparatus according to the third embodiment;
FIG. 3 is a schematic layout diagram showing a transfer gear and the like.

FIG. 9 is a perspective view showing a conventional recording apparatus.

FIG. 10 is a partially enlarged perspective view of a conventional recording apparatus.

[Explanation of symbols]

 101 Main unit 102 Upper carriage shaft fixing plate 103 Upper carriage shaft 104 Bearing 106 Bearing 105 Carriage 105a Base 106 Bearing 107 Lower carriage shaft 110 Platen 111 Head 112 Gear 113 Operation handle 114 Operation shaft 116 Disc cam 117 Roller 122 Guide support 125 Support side plate 129 Plate cam 130 Cam lever 132 Operation handle 134 Operation handle 135 Idler gear body 136 Transfer gear 141 Idler shaft 152 Belt receiver 153 Transfer belt

Claims (5)

[Claims] 1. A recording apparatus having a head for recording an image on a recording medium, comprising: a carriage shaft provided in a direction intersecting and parallel to a direction in which the recording medium is transported; A carriage that is controlled to move in the axial direction of the carriage shaft, a guide member attached to the carriage so as to be movable in a direction perpendicular to the axial direction of the carriage shaft, and one end of the guide member facing the recording medium. The head supported in a state, and arranged on the carriage, engaging with a guide member supporting the head to apply a moving force in a direction perpendicular to the axial direction of the carriage shaft, thereby allowing the head and the recording medium to move together. A recording apparatus, comprising: a head transfer mechanism for adjusting an interval. 2. A disk-shaped cam having a plurality of stages of cam surfaces disposed on the carriage and in contact with a roller attached to the other end of the guide member;
2. The recording apparatus according to claim 1, further comprising an operation handle for rotating said disc-shaped cam to displace a guide member supporting said head. 3. A plate-like cam having a plurality of stages of cam surfaces disposed on the carriage and abutting on a roller attached to the other end of the guide member, wherein the head-transfer mechanism slides the plate-like cam. 2. The recording apparatus according to claim 1, further comprising an operation handle for changing a contact position between the plurality of cam surfaces and the roller. 4. An idler gear body rotatably disposed on the carriage, meshing with a transfer gear provided on a rotatable guide member supporting the head, and an idler gear body via the idler gear body. 2. The recording apparatus according to claim 1, further comprising an operation handle for rotating the transfer gear and displacing the guide member together with the transfer gear. 5. The head transfer mechanism section includes a biasing spring that maintains a state of engagement between the roller attached to the other end of the guide member and the cam surface. 3. The recording device according to 3.