JP2021004129A - Recording medium transport device of printer - Google Patents

Abstract

To provide a recording medium transport device that can change the applied pressure of a pressure applying roller 8 against a grid roller 20 at multiple levels so as to be compatible with different types of sheets.SOLUTION: The recording medium transport device includes: a medium set lever 46 that is supported by a machine body movably in a predetermined direction; a plurality of pressure applying bases 24 that are attached to a head guide rail 6; a shaft body 22 that is supported rotatably along the head guide rail 6; pressure applying arms 30 each of which has a pressure applying roller 8 and is supported oscillatably by each pressure applying base 24 around a shaft part; energizing force applying means that applies to each pressure applying arm 30 energizing force in a direction where the pressure applying roller 8 faces the grid roller 20; and motion conversion means that converts movement of the medium set lever 46 into rotational movement of the shaft body. The energizing force of the energizing force applying means against each pressure applying arm 30 can be changed at multiple levels in accordance with the rotation of the shaft body 22 driven by the movement of the medium set lever 46.SELECTED DRAWING: Figure 1

Description

The present invention relates to a recording medium transfer device for a printer.

In a printer that moves a recording medium between a drive roller (grid roller) and a pinch roller (pressurization roller), a recording medium transfer device in which the pressing force of the pinch roller is changed by a coil spring is known. (See, for example, Patent Document 1).
Further, in an inkjet recording device, a drive roller and a driven roller (pinch roller) which is divided into a plurality of parts and presses a recording medium (paper) with a predetermined pressure are provided, and the pressure applied to the drive roller of the driven roller is individually applied. It is known that it can be adjusted to (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 8-72489 JP-A-2015-20857

When printing on many types of paper using the same printer in an inkjet printer, etc., the pressure applied to the grid rollers (drive rollers) of the pressurizing rollers is set in multiple stages according to the type, material, weight, etc. of the paper. It is desirable to change and set according to the paper to be printed.
A main object of the present invention is to provide a recording medium transfer device capable of changing the pressing force of a pressurizing roller on a grid roller in multiple stages.
Further, a function is required in which individual pressure rollers can be selectively used among a large number of pressure rollers according to the paper width to be used.
Another object of the present invention is to provide a recording medium transfer device capable of selectively using individual pressure rollers among a large number of pressure rollers to support various types of paper widths.

In order to achieve the above object, the present invention comprises a grid roller 20 connected to a drive system and a plurality of pressure rollers 8 divided and arranged in the width direction of the recording medium facing the grid roller 20. A head guide rail 6 installed on the machine body along the width direction of the recording medium, which is a recording medium transfer device of a printer that sandwiches and conveys a recording medium by rotation of a grid roller 20 and prints on the recording medium. A media set lever 46 supported by the machine body so as to be movable in a predetermined direction, a plurality of pressure bases 24 attached to the head guide rail 6, and a shaft rotatably supported along the head guide rail 6. A pressurizing arm 30 having a body 22 and a pressurizing roller 8 and swingably supported by each pressurizing base 24 around a shaft portion 32, and the pressurizing roller 8 on each of the pressurizing arms 30. The urging force applying means is provided with an urging force applying means for applying an urging force in a direction toward the grid roller 20, and a motion converting means for converting the movement of the media set lever 46 into a rotational motion of the shaft body 22. The urging force on each of the pressurizing arms 30 is changed in multiple stages in response to the rotation of the shaft body 22 driven by the movement of the media set lever 46.
Further, in the present invention, the recording medium is sandwiched between the grid roller 20 connected to the drive system and a plurality of pressure rollers 8 separately arranged in the width direction of the recording medium facing the grid roller 20, and the grid roller 20 is sandwiched between the grid rollers 20. A recording medium transport device for a printer that transports a recording medium by rotation of the recording medium and prints on the recording medium. A head guide rail 6 erected on the machine along the width direction of the recording medium, and a predetermined head guide rail 6 for the machine. A media set lever 46 movably supported by the machine body in a direction, a plurality of pressure bases 24 attached to the head guide rail 6, and a shaft body 22 rotatably supported along the head guide rail 6. A pressurizing arm 30 having a pressurizing roller 8 and swingably supported on each pressurizing base 24 about a shaft portion, and the pressurizing roller 8 on each of the pressurizing arms 30 is a grid roller. Each of the above-mentioned addition means of the urging force applying means is provided with an urging force applying means for applying an urging force in a direction toward 20 and a motion converting means for converting the movement of the media set lever 46 into a rotational motion of the shaft body 22. An urging force is applied to the pressure arm 30 in response to the rotation of the shaft body 22 accompanying the movement of the media set lever 46, and the shaft body 22 and the shaft body 22 are applied to each of the pressure arms 30. It is characterized in that the pressurizing roller 8 is provided with a pressurizing stop means for holding the state in which the pressurizing roller 8 is raised from the grid roller 20 by disengaging the linkage with the pressure arm 30 so as to be released.
Further, the present invention is characterized in that the urging force changing means for changing the urging force set by the urging force applying means is provided for each of the pressurizing arms 30.
Further, the present invention is for preventing the shaft body 22 and the pressurizing arm 30 from being disconnected from each of the pressurizing arms 30 so that the pressurizing roller 8 can be kept raised from the grid roller 20. It is characterized by providing a pressurization stop means.
Further, in the present invention, the urging force applying means is provided by a cam body 42 fixed to the shaft body 22, a pressure spring arm 26 rotatably supported by the pressure base 24, and the pressure spring arm. A multi-stage pressurizing knob member 38 having a convex portion 40 for locking one eccentric portion of 26, and a coil spring 36 attached between the other eccentric portion of the pressurizing spring arm 26 and the pressurizing arm 30. The cam body 42 is characterized in that the urging force applied to the pressure spring arm 26 changes according to the position of the pressure convex surface 44 with respect to the pressure spring arm 26. ..
Further, in the present invention, the motion conversion means is slidably engaged with the guide slit 56 formed in the media set lever 46 on one side via the protrusion 60, and the other side is the shaft body. The link piece 58 is composed of a link piece 58 fixed to the 22 and the link piece 58 swings around the shaft body 22 according to the position of the media set lever 46 with respect to the machine body, and the swing of the link piece 58 causes the link piece 58 to swing. It is characterized in that the shaft body 22 is made to rotate.
Further, in the present invention, the urging force changing means has a configuration in which a multi-stage pressurizing knob member 38 is slidably arranged on the pressurizing arm 30 via a guide portion, and a convex portion 40 is provided on the multi-stage pressurizing knob member 38. A reference position in which the multi-stage pressurizing knob member 38 is pushed most toward the back of the guide portion, a one-step pulling position in which the multi-stage pressure knob member 38 is pulled out one step from the guide portion by a predetermined amount, and a predetermined amount of pulling out from the one-step pulling position. It can be detachably locked to each position of the two-step pulling position, and when the multi-step pressure knob member 38 is in the reference position, the convex portion 40 locks the rotation of the pressure spring arm 26 in one direction. At the one-step pulling position, the convex portion 40 retracts by a predetermined amount from the position where the pressure spring arm 26 is locked, and at the two-step pulling position, the convex portion 40 moves back from the pressure spring arm 26. It is characterized in that the pressure spring arm 26 is largely retracted from the locking position to free the rotation of the pressure spring arm 26 in one direction.
Further, in the present invention, the media set lever 46 can be slidably slid in the front-rear direction of the machine along a guide provided on the machine body, and the media set lever 46 can be detachably attached to and detached from the reference position on the media set lever 46 side. A positioning portion 52 for locking is provided, and the position of the media set lever 46 with respect to the machine is set to the reference position, a pushing position moved from the reference position to the back of the machine by a predetermined amount, and a large pull-out to the outside of the body from the reference position. When both the media set lever 46 and the multi-stage pressure knob member 38 are in the reference position, the pressure roller 8 is moved to the grid roller 20 by the elasticity of the coil spring 36. When the media set lever 46 is in the pushing position and the multi-stage pressurizing knob member 38 is in the reference position, the convex surface 44 of the cam body 42 pressurizes the media set lever 46 at a standard pressure corresponding to the elasticity of the spring 36. The eccentric portion of the spring arm 26 is pushed up, the pressing force of the pressurizing roller 8 against the grid roller 20 is set to be stronger than the standard pressure, the media set lever 46 is in the reference position, and the multi-stage pressing is performed. When the pressure knob member 38 is in the one-step pulling position, the convex portion 40 retracts by a predetermined amount from the position where the eccentric portion of the pressure spring arm 26 is locked, and the pressure of the pressure roller 8 is applied to the grid roller 20. Is characterized by being set to weak.
Further, in the present invention, when the media set lever 46 is in the pull-out position and the pressurizing roller 8 is separated from the grid roller 20, the multi-stage pressurizing knob member 38 is positioned in the two-step pulling position. The media set lever 46 is in a pressurization stop state in which the moving motion of the media set lever 46 is not transmitted to the pressurizing arm 30, and the pressurizing roller 8 is maintained in a state of being separated from the grid roller 20.
Further, in the present invention, the pressurizing stop means is provided with a multi-stage pressurizing knob member 38 so as to be movable in the front-rear direction on the pressurizing arm 30, and a convex portion provided on the multi-stage pressurizing knob member 38. The rotation of the pressure spring arm 26 is locked by 40, and the cam body 42 provided on the shaft body 22 resists the elasticity of the coil spring 36 between the pressure spring arm 26 and the pressure arm 30. In a state where the eccentric portion of the pressurizing arm 30 is pushed down and the pressurizing roller 8 is raised with respect to the grid roller 20, the multi-stage pressurizing knob member 38 is moved by a predetermined distance, and the convex portion 40 is moved to the pressurizing spring. The pressure spring arm 26 is separated from the locking position to make the pressure spring arm 26 rotatable within a predetermined range, so that the pressure roller 8 is maintained in a raised state with respect to the grid roller 20. Is to be.

In the present invention, the pressing force applied to the grid rollers of a large number of pressure rollers provided in the longitudinal direction of the device can be changed in multiple stages, and individual pressure rollers can also be selectively used. , Various recording media, various recording media, and recording media of various widths can be supported. Not only can individual pressurizing rollers be used selectively, but the urging force can also be selectively changed, so by combining settings, it is possible to match various recording media and recording media of various widths. It can be set and supported.

It is explanatory drawing of the main part of this invention. FIG. 5 is an explanatory view of a cross section taken along line AA of the main part of the present invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is explanatory drawing of the main part of this invention. It is an appearance explanatory drawing of the main part of this invention. It is the appearance explanatory drawing of the printer apparatus. It is the appearance explanatory drawing of a part of a printer apparatus.

Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 15 is an external explanatory view showing the overall structure of the front side of the printer device. The front cover 2 is opened, and the print head 4 arranged in the cover and the head guide rail 6 and the head guide rail 6 for guiding the print head 4 are formed. The media pressurizing rollers 8 arranged in large numbers along the line are visible.

The front cover 2 is opened and closed when the media (paper) is set or when printing is confirmed, and is normally closed. Maintenance covers 12 and 14 are arranged on both sides of the machine body 10 of the printer device, and head guide rails 6 are erected in the longitudinal direction of the device. A carriage 16 having a print head 4 is movably connected to the head guide rail 6.

Below the head guide rail 6, a media guide 18 that supports media such as paper and guides the media from the rear to the front of the machine body 10 is arranged. Located below the movement path of the printhead 4, the machine body 10 is provided with a grid roller 20 connected to the drive system as shown in FIG.

A shaft body 22 (see FIG. 3) having a hexagonal surface parallel to the longitudinal direction of the head guide rail 6 is arranged below the head guide rail 6, and the shaft body 22 is rotatable on both sides of the machine body 10. It is supported by. As shown in FIG. 1, a plurality of pressure bases 24 (20 or more in this embodiment) are connected to the head guide rail 6 at a predetermined interval, and each pressure base 24 is refracted into an L shape. The pressure spring arm 26 is rotatably supported via a shaft 28 in a plane perpendicular to the media plane and perpendicular to the longitudinal direction of the head guide rail 6.

The pressurizing arm 30 is rotatably supported on the pressurizing base 24 in a plane perpendicular to the plane of the media, centering on the shaft portions 32 (see FIG. 14) on both sides. A pressure roller 8 is rotatably connected to one of the pressure arms 30, and the pressure roller 8 faces the grid roller 20. A coil spring 36 is arranged between one of the pressure spring arm 26 and the other of the pressure arm 30, and the pressure arm 30 is centered on the shaft portion 32 in FIG. 1 due to the tensile force of the coil spring 36. It is urged clockwise as.

A multi-stage pressurizing knob member 38 is slidably attached to the guide portion on the surface of the pressurizing arm 30 in a direction perpendicular to the longitudinal direction of the head guide rail 6, and the multi-stage pressurizing knob member 38 is at a reference position. The pressurizing arm 30 is unlockably locked at three stages of the first stage position and the second stage position.

A convex portion 40 is formed on the multi-stage pressure knob member 38, and the other side of the pressure spring arm 26 is elastically contacted with the side surface of the convex portion 40 by the urging force of the coil spring 36. A cam body 42 is fixed to the shaft body 22, and a convex surface 64 for raising and separating the pressure roller 8 from the grid roller 20 is formed on the cam body 42.
A plate-shaped media set lever 46 is supported on the side portion of the machine body 10 so as to be slidable in the front-rear direction of the machine body 10 via a slide guide mechanism, and a plate-shaped media set lever 46 is supported on the front-rear end of the media set lever 46 for slide operation. A handle 48 and a handle 48 are provided. Since the handle 48 has a structure that can move in the front-rear direction with respect to the airframe 10 as shown in FIG. 16, the handle 48 provided at the rear of the airframe 10 can be used, and the handle 48 can be used in front of the airframe or when necessary. It can be used from either side of the rear.

FIG. 2 shows a slide guide mechanism of the media set lever 46, in which a guide bush 50 is fixed to the main body of the media set lever 46, and a slit 51 extending in the front-rear direction of the machine body 10 is formed in the guide bush 50. At a predetermined position of the slit 51, a positioning portion 52 for the resin bearing 54 having an uneven surface is formed by the resin material. A resin bearing 54 provided on the machine body 10 side is fitted and arranged in the slit 51, and the positioning portion 52 is configured to be detachably locked to the resin bearing 54.

A guide slit 56 is formed in the media set lever 46, and one protrusion 60 of the link piece 58 is slidably fitted therein, and the other of the link piece 58 is fixed to the shaft body 22. .. When the media set lever 46 moves in the front-rear direction of the machine body 10, the protrusion 60 slides along the guide slit 56, and the link piece 58 swings around the shaft body 22 with the slide. The shaft body 22 rotates as the link piece 58 swings.

FIGS. 1 and 2 show a state in which the pressure roller 8 is in contact with the grid roller 20 at a standard pressure. The pressure convex surface 44 of the cam body 42 faces one pressure receiving surface 62 of the pressure spring arm 26, and the other of the pressure spring arm 26 is locked to the convex portion 40 of the multi-stage pressure knob member 38. ..

In this state, the amount of elongation of the coil spring 36 is determined, and the pressure roller 8 is subjected to the grid roller 20 by the clockwise urging force centered on the shaft portion 32 of the pressure arm 30 due to the tensile force of the coil spring 36. It comes into contact with the standard pressure.
In the present embodiment, the position where the media set lever 46 is locked to the resin bearing 54 via the positioning portion 52 is set as a reference position.

FIGS. 4 and 5 show a state in which the pressure roller 8 is in contact with the grid roller 20 with a strong pressure. The pressure convex surface 44 of the cam body 42 is in contact with the other lower surface of the pressure spring arm 26 by a predetermined amount, that is, clockwise, with a predetermined amount of deviation from the case of standard pressure, and one of the pressure spring arms 26 , The convex surface 44 about the shaft 28 pushes up the shaft 28 in a predetermined amount clockwise from the standard state. As a result, the amount of elongation of the coil spring 36 is determined, and the pressure roller 8 bounces on the grid roller 20 at a pressure larger than the standard pressure due to the clockwise urging force centered on the shaft portion 32 of the pressure arm 30. Get in touch.

In this state, the media set lever 46 is pushed in the direction of the machine body 10 as shown in FIG. 5, and the end portion of the slit 51 is locked to the resin bearing 54. Further, the protrusion 60 of the link piece 58 has moved to the upper part of the guide slit 56.
FIGS. 6 and 7 show a state in which the pressure roller 8 is in contact with the grid roller 20 in a weak state.

In a state where the positioning portion 52 of the media set lever 46 is locked to the machine body 10 side via the resin bearing 54 at the normal position, the multi-stage pressurizing knob member 38 is pulled out from the original position by one step to the right in the drawing. The left and right round protrusions (not shown) of the multi-stage pressurizing knob member 38 enter the weak groove (not shown) of the pressurizing spring arm 26, and the multi-stage pressurizing knob member 38 is in the forward position and the pressurizing arm. It is detachably locked to 30.

In this state, the convex portion 40 of the multi-stage pressurizing knob member 38 is separated from the state in which the pressurizing spring arm 26 is locked in FIG. 1 with respect to the pressurizing spring arm 26. From the state of FIG. 1, it swings counterclockwise about the shaft 28, and as shown in FIG. 6, the pressure spring arm 26 is locked to the convex surface 44 of the cam body 42. Due to the counterclockwise swing change of the pressure spring arm 26 shown in FIG. 6, the tensile force of the coil spring 36 with respect to the pressure arm 30 is reduced, and the pressure roller 8 has a weaker pressure than the standard state. It is in contact with the grid roller 20.

FIG. 8 shows an ascending state of the pressure roller 8 in which the pressure roller 8 is separated from the grid roller 20. The media set lever 46 is largely pulled out from the machine body 10, and the rotation of the shaft body 22 due to the movement of the media set lever 46 causes the roller raising convex surface 64 of the cam body 42 to move onto one surface of the pressurizing arm 30. ing. As a result, the pressurizing arm 30 swings largely counterclockwise in the drawing about the shaft portion 32, and the pressurizing roller 8 is separated from the grid roller 20.

In the raised state of the pressurizing roller 20, the media set lever 46 is in a state in which the end portion of the slit 51 is locked to the resin bearing 54, as shown in FIG. When the pressure roller 8 is in the raised state, the multi-stage pressure knob member 38 is pulled out from the original position by a predetermined amount and locked at the second-stage locking position on the pressure arm 30 side as shown in FIG. The side surface of the convex portion 40 of the multi-stage pressure knob member 38 abuts on the locking surface 66 formed on the pressure base 24, and the pressure spring arm 26 swings counterclockwise about the shaft 28. It becomes a state of freedom of movement, and the tensile force of the coil spring 36 on the pressurizing arm 30 is released. That is, the pressurization cancel set state is set.

FIGS. 12 and 13 show a state in which the pressurization canceling state is maintained. Even if the media set lever 46 moves to the reference position and the roller raising convex surface 64 of the cam body 42 separates from the pressure receiving surface of the pressure arm 30, the tensile force of the coil spring 36 does not act on the pressure arm 30. Therefore, the pressurizing arm 30 holds a state of swinging counterclockwise due to rotational torque due to the weight of one side of the shaft portion 32, and the pressurizing roller 8 holds a state of being separated from the grid roller 20. To do.

Next, the operation of this embodiment will be described.
First, the operator sets the media wound in the roll state of the print medium (media) on the roll paper receiver (not shown) on the machine body 10 side, and pulls out the media set lever 46 to the front (see FIG. 9). ), The pressure roller 8 is separated from the grid roller 20.

Next, the media wound in the rolled state is pulled out and guided between the grid roller 20 and the pressure roller 8. Before printing, the pressure of the pressurizing roller 8 with respect to the grid roller 20 is set according to the medium to be used, which state is standard, strong, weak, or cancelled. After setting the media, it may be changed and set.
Next, the media set lever 46 is pushed in to lower the pressurizing roller 8 and crimp it to the grid roller 20, and the media on the media guide 18 is sandwiched between the grid roller 20 and the pressurizing roller 8.

Next, the worker connects the external computer and the printer device via the interface, turns on the power of the external computer device and the printer device, respectively, and the external computer device works by executing a predetermined program. It will be in a standby state waiting for the input of a command from the person.

Next, the operator operates an external computer device to cause the printer device to start printing an image. As a result, the controller built into the printer device controls the operation of the printhead 4 while changing the relative positional relationship between the printhead 4 and the media based on the image data output from the external computer device. Ink droplets are ejected from the nozzles of the print head 4 toward the media on the media guide 18 to perform printing.

The pressing force of the pressurizing roller 8 on the grid roller 20 during printing can be set in multiple stages of standard, strong, and weak, and the operator can operate the media set lever 46 and the multi-stage pressurizing knob member 38. , Perform the setting operation before printing. When selecting an unused pressure roller 8 from a large number of pressure rollers 8, the multi-stage pressure knob member 38 is largely pulled out to the two-stage locking position with the pressure roller 8 raised, so that the pressure roller 8 is not used. Can be in a state. This makes it possible to support various media having different widths.

According to the present invention, by providing a structure for adjusting the pressing force, it is possible to support a wide variety of media, and it is also possible to set a different pressing force for each place where the medium is conveyed. Therefore, when transporting different types of paper side by side at the same time, it is possible to transport with one set to the normal setting and the other set to the weak setting, so that the central part is canceled and pressurization is not performed. If set to, it is possible to transport different media at once.
The media used in this case may be a roll-shaped medium such as paper, cloth, tarpaulin, or a marking film, or may be provided in a plate shape. In the case of transporting a plate-shaped product, if the media guide 18 can hold the media in a flat state within a certain range, the transport after printing becomes smooth, and such a structure may be used.

It should be noted that these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions and replacement changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention as well as in the scope of the invention described in the claims and the equivalent scope thereof.

2 Front cover 4 Print head 6 Head guide rail 8 Pressurized roller 10 Machine 12 Maintenance cover 14 Maintenance cover 16 Carriage 18 Media guide 20 Grid roller 22 Axis body 24 Pressurized base 26 Pressurized spring arm 28 Axis 30 Pressurized arm 32 Axis Part 36 Coil spring 38 Multi-stage pressurizing knob member 40 Convex part 42 Cam body 44 Convex surface 46 Media set lever 48 Handle 50 Guide bush 51 Slit 52 Positioning part 54 Resin bearing 56 Guide slit 58 Link piece 60 Convex 62 Pressure receiving surface 64 Convex surface 66 Locking surface

Claims (9)

A recording medium is sandwiched between a grid roller 20 connected to a drive system and a plurality of pressure rollers 8 divided and arranged in the width direction of the recording medium facing the grid roller 20, and recording is performed by rotation of the grid roller 20. A recording medium transport device for a printer that transports a medium and prints on the recording medium, and is supported by a head guide rail 6 erected on the machine along the width direction of the recording medium and movable in a predetermined direction. It has a media set lever 46, a plurality of pressure bases 24 attached to the head guide rail 6, a shaft body 22 rotatably supported along the head guide rail 6, and a pressure roller 8. A pressurizing arm 30 swingably supported on each of the pressurizing bases 24 about a shaft portion 32, and an urging force on each of the pressurizing arms 30 in a direction in which the pressurizing roller 8 is directed toward the grid roller 20. The urging force applying means for imparting the urging force and the motion converting means for converting the movement of the media set lever 46 into the rotational motion of the shaft body 22 are provided, and the urging force of the urging force applying means to the respective pressurizing arms 30 is applied. A recording medium transfer device for a printer, characterized in that it changes in multiple stages in response to the rotation of the shaft body 22 driven by the movement of the media set lever 46. The recording medium is sandwiched between the grid roller 20 connected to the drive system and a plurality of pressure rollers 8 divided and arranged in the width direction of the recording medium facing the grid roller 20, and the recording medium is rotated by the rotation of the grid roller 20. Is a recording medium transport device of a printer that transports and prints on the recording medium, and is movable in a predetermined direction with respect to the head guide rail 6 erected on the machine body along the width direction of the recording medium. A media set lever 46 supported by the machine body, a plurality of pressure bases 24 attached to the head guide rail 6, a shaft body 22 rotatably supported along the head guide rail 6, and a pressure roller 8. A pressurizing arm 30 that is swingably supported by each of the pressurizing bases 24 about a shaft portion 32, and a direction in which the pressurizing roller 8 faces the grid roller 20 on each of the pressurizing arms 30 The urging force applying means for imparting the urging force and the motion converting means for converting the movement of the media set lever 46 into the rotational motion of the shaft body 22 are provided with respect to each of the pressurizing arms 30 of the urging force applying means. The urging force is applied in response to the rotation of the shaft body 22 accompanying the movement of the media set lever 46, and the shaft body 22 and the pressure arm 30 are attached to each of the pressure arms 30. A recording medium transfer device for a printer, characterized in that the pressurizing roller 8 is provided with a pressurizing stop means for holding a state in which the pressurizing roller 8 is raised from the grid roller 20 by disengaging the linkage between the two. The recording medium transfer device for a printer according to claim 1, wherein the urging force changing means for changing the urging force set by the urging force applying means is provided for each of the pressurizing arms 30. Each of the pressurizing arms 30 is provided with a pressurizing stop means for disengaging the linkage between the shaft body 22 and the pressurizing arm 30 so as to keep the pressurizing roller 8 raised from the grid roller 20. The recording medium transfer device for a printer according to claim 1, wherein the printer is provided. The eccentricity of one of the cam body 42 fixed to the shaft body 22, the pressure spring arm 26 rotatably supported by the pressure base 24, and the pressure spring arm 26 as the urging force applying means. It is composed of a multi-stage pressurizing knob member 38 having a convex portion 40 for locking the portion, and a coil spring 36 attached between the other eccentric portion of the pressurizing spring arm 26 and the pressurizing arm 30. Claim 1 or claim, wherein the urging force applied to the pressure spring arm 26 changes according to the position of the pressure convex surface 44 of the cam body 42 with respect to the pressure spring arm 26. Item 2. The recording medium transfer device for the printer according to Item 2. The motion conversion means was slidably engaged with the guide slit 56 formed in the media set lever 46 on one side via a protrusion 60, and the other side was fixed to the shaft body 22. It is composed of a link piece 58, and the link piece 58 swings around the shaft body 22 according to the position of the media set lever 46 with respect to the machine body, and the shaft body 22 rotates due to the swing of the link piece 58. The recording medium transfer device for the printer according to claim 1 or 2, wherein the device is designed to be used. The urging force changing means has a configuration in which a multi-stage pressurizing knob member 38 is slidably arranged on the pressurizing arm 30 via a guide portion, and a convex portion 40 is provided on the multi-stage pressurizing knob member 38 to provide the multi-stage pressurizing. A reference position in which the pressure knob member 38 is pushed most toward the back of the guide portion, a one-step pulling position in which a predetermined amount is pulled out from the guide portion by one step, and a two-step pulling position in which a predetermined amount is further pulled out from the one-step pulling position. When the multi-stage pressure knob member 38 is in the reference position, the convex portion 40 locks the rotation of the pressure spring arm 26 in one direction, and the one-stage pull is performed. When in the position, the convex portion 40 retracts by a predetermined amount from the position where the pressure spring arm 26 is locked, and when in the two-step pulling position, the convex portion 40 is in a position where the pressure spring arm 26 is locked. The recording medium transfer device for a printer according to claim 3, wherein the pressure spring arm 26 is largely retracted from the position to free rotation in one direction. A positioning unit that allows the media set lever 46 to slide in the front-rear direction of the machine along a guide provided on the machine, and detachably locks the media set lever 46 to a reference position on the media set lever 46 side. 52 is provided, and the position of the media set lever 46 with respect to the machine is set to the reference position, a pushing position in which the media set lever 46 is moved to the back of the machine by a predetermined amount from the reference position, and a pulling position in which the media set lever 46 is pulled out from the reference position to the outside of the machine. When the media set lever 46 and the multi-stage pressure knob member 38 are both movable and the multi-stage pressure knob member 38 is in the reference position, the elasticity of the coil spring 36 causes the pressure roller 8 to become the grid roller 20 and the elasticity of the coil spring 36. When the media set lever 46 is in the pushing position and the multi-stage pressurizing knob member 38 is in the reference position, the convex surface 44 of the cam body 42 is eccentric of the pressurizing spring arm 26 by pressure contacting with the corresponding standard pressure. The section is pushed up, the pressing force of the pressurizing roller 8 on the grid roller 20 is set to be stronger than the standard pressure, the media set lever 46 is in the reference position, and the multi-stage pressurizing knob member 38 At the one-step pulling position, the convex portion 40 retracts by a predetermined amount from the position where the eccentric portion of the pressure spring arm 26 is locked, and the pressing force of the pressure roller 8 on the grid roller 20 is set to be weak. The recording medium transfer device for a printer according to claim 7, wherein the recording medium transfer device of the printer is characterized in that. When the media set lever 46 is in the pull-out position and the pressurizing roller 8 is separated from the grid roller 20, when the multi-stage pressurizing knob member 38 is positioned in the two-step pulling position, the media set The seventh aspect of claim 7, wherein the moving motion of the lever 46 is not transmitted to the pressurizing arm 30 and is in a pressurization stop state, and the pressurizing roller 8 is maintained in a state of being separated from the grid roller 20. Recording medium transfer device for printers.

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