JP2003211778A - Position identifying device and recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position identifying device capable of identifying four positions while saving the space without requiring any extra sensor, and to provide a recorder comprising that position identifying device. <P>SOLUTION: The position identifying device comprises a body section 1 having two cam parts (11, 21) of different shape arranged while being shifted in the back/forth direction in the side view and taking four positions through rotation, and sensors (10, 20) arranged on the rotational track of the cam parts (11, 21) and capable of identifying the on/off state based on contact/noncontact with the cam parts (11, 21) wherein four positions of the body section 1 can be identified through combination of on/off states of respective sensors. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus whose print mode is variable according to the type of recording material.

[0002]

2. Description of the Related Art There are various types of recording devices such as printers and facsimiles. In the following, an ink jet printer as an ink jet type recording device (hereinafter, referred to as an ink jet recording device for performing printing by ejecting ink toward a recording material).
"Printer" will be described as an example. Further, in the description, schematic side views of the printer shown in FIGS. 5 to 8 to be described later are used.

The printer 100 has a recording portion 37 for recording on a recording material. In the recording portion 37, a head portion 32 for ejecting ink is arranged at the bottom of the carriage 31, and the head surface of the head portion 32 is arranged. Printing is performed by ejecting ink toward the recording material P that is away from 33 (the surface facing the printing surface K of the recording material P) by a certain distance. Therefore, it is important to properly adjust the distance between the printing surface K of the recording material P and the head surface 33 of the head portion 32, that is, the paper gap (hereinafter referred to as “PG”), in order to maintain the printing quality. is there.

Examples of recording materials assumed in the printer include plain paper, board paper, envelopes, and CD-R. The printer includes a platen 36 and a head surface 33 that support the recording material from below in order to optimize the conditions such as PG for various types of recording materials having different thicknesses. Interval (platen gap)
A platen gap conversion device 90 for displacing the carriage 31 is provided, and the user operates the operation lever 2 which is a part of the platen gap conversion device to move the carriage 31 according to the type (thickness etc.) of the recording material. The position can be displaced to appropriately adjust the PG. That is, the position of the recording surface (printing surface) is different depending on the type (thickness) of the recording material, and it is possible to prevent a situation where the distance from the head surface becomes smaller as the recording material becomes thicker. ing.

The platen gap converting device 90 has, for example, a main body and an operating lever 2 operated by a user, and can take four positions according to the thickness of the recording material. The four positions will be described below. First, as shown in FIG. 5, when the recording material is plain paper or the like and its thickness is relatively thin (for example, a thickness of about 0.08 to 0.3 mm), a normal position (hereinafter, referred to as “N position”) is set. ")). Figure 6
As shown in, the + position is set when the recording material is a board paper, an envelope, or the like, and the thickness thereof is relatively large (for example, the thickness is about 0.4 to 1.6 mm). As shown in FIG. 7, there is a ++ position that is set when the recording material is a thicker CD-R or the like. Furthermore, as shown in FIG. 8, when the recording materials are manually set one by one, when a rigid one such as a CD-R tray on which a CD-R is placed is manually set, or when the recording material is a printer. There is a release position (hereinafter referred to as “R position”) in which the recording material is released by separating the driving roller (41, 43) and the driven roller (42, 44) from each other when the recording material is pulled out. .

Further, according to the above-mentioned four positions, as shown in FIGS. 5 to 8, the carriage 31 can be displaced in position through a cam mechanism (not shown), and the recording material P is printed. Surface K and head surface 3 of head portion 32
It is possible to adjust the distance to 3 and PG. That is, at the N position (FIG. 5), the carriage 31 is in the most lowered state, at the + position (FIG. 6), the carriage 31 is at a position slightly higher than the N position carriage, and at the ++ position (see FIG. The carriage 31 in 7) is in a position slightly elevated from the + position. The carriage 31 at the R position (FIG. 8) is at the same position as the ++ position or at a slightly raised position. That is, the distance (platen gap) between the head surface 33 and the platen 36 at the N position is h1, and the head surface 33 at the + position is
To the platen 36 (platen gap), h2,
The distance (platen gap) between the head surface 33 and the platen 36 at the ++ position is h3, and the distance between the head surface 33 and the platen 36 at the R position (platen gap)
Where h4 is h4, h4 ≧ h3>h2> h1.

The platen gap converting device is provided with a position identifying device for identifying the above-mentioned position. The position identifying device is provided with a cam portion on the main body portion, and the cam portion rotates. On the moving track, there are two sensors that can identify the on / off state depending on the presence or absence of contact with the cam portion. It should be noted that the sensor is configured to come into contact with a single cam portion.

[0008]

However, in such a structure, as described above, the N position, the + position, and the N position, which are taken by the main body of the platen gap conversion device, are taken.
Of the four positions, the ++ position and the R position, only three positions can be identified, and the above four positions cannot be identified separately. More specifically, it is impossible to distinguish between the N position and the + position, and the N position and the + position have one position, the ++ position has one position, and the R position has one position.
Only three positions in total could be identified.

In order to identify the four positions, it is necessary to add a new sensor, and to dispose two cam portions at positions separated from each other on the main body portion, which increases the size and cost of the apparatus. Was the cause of.

An object of the present invention is to provide a position identifying device capable of identifying four positions without adding a new sensor and saving space. Another object is to provide a recording device equipped with the position identification device.

[0011]

In order to solve the above-mentioned problems, the invention of the position identification device according to claim 1 has two different shapes and is arranged to be displaced in the front-back direction in a side view. On the main body part which has a cam part and takes four positions by turning, and on the turning track of the cam part,
Each of the sensors is provided with a sensor that can identify an on-off state depending on whether or not there is contact with the cam portion.
It is characterized in that the four positions of the main body can be identified by the combination of OFF.

According to this feature, by providing two sensors capable of discriminating between two states of on-off, four positions can be discriminated by the combination of on-off of these two sensors. That is, conventionally, in order to identify the four positions, it is necessary to increase the number of sensors, dispose the two sensors at separate locations, and use different cam portions, respectively. Was the cause of the change. However, in the present invention, since the cam portions have different shapes and are arranged so as to be shifted in the front-rear direction when viewed from the side, for example, two sensors are disposed relatively close to each other and further when viewed from the side. It is also possible to arrange them in the same row, and it is possible to identify four positions in a space-saving manner without providing a new sensor. Also, the cam part,
Since the sensor can be arranged at a localized portion of the main body portion, the degree of freedom in design is improved, and for example, other portions of the main body portion, that is, a portion where the cam portion is not arranged are separated. Can be used for.

The invention of the position identification device according to claim 2 is the position identification device according to claim 1, wherein the cam portion has a convex structure, a concave structure, or a combination thereof, and is parallel to the rotational direction. , Each cam portion is provided at a position in the vicinity of the rotation axis direction.

According to this feature, even if there are, for example, two cam portions and a sensor provided for each cam portion, these two cam portions are provided in the vicinity of the main body portion. It is possible to save space.
That is, even if the cam portion and the sensor are provided at localized locations on the main body portion, the four positions taken by the main body portion can be identified, so that the degree of freedom in designing the main body portion can be further improved. it can.

The position identification device according to a third aspect of the present invention is
The main body section according to claim 1 or 2, wherein the main body section has an operation lever for rotating the main body section, and the operation lever and the cam section are formed integrally with the main body section on the main body section. It is characterized by being formed. According to this feature, the main body portion having the cam portion and the operation lever can be configured with a simple structure and at a low cost.

Further, according to the invention of a recording apparatus described in claim 4, there is provided a platen gap converting device which has a main body portion and is capable of displacing a platen gap by taking four positions by rotating, and a recording portion. A recording device having
The main body portion has two cam portions that are different in shape and are arranged to be displaced in the front-rear direction in a side view, and the cam portion is in contact with the cam portion on the rotation trajectory of the cam portion. Each of the sensors is provided with a sensor capable of identifying an on-off state depending on the presence or absence of the sensor, and includes a position identification device capable of identifying each position of the main body by a combination of the on-off states of the sensors. It is characterized in that a control unit for controlling the print mode is provided according to the position.

According to this feature, there is provided a recording apparatus having a main body section, a platen gap converting apparatus capable of displacing a platen gap by taking four positions by rotating, and a recording section. The main body portion has two cam portions that are different in shape and are displaced from each other in the front-back direction in a side view, and whether or not there is contact with the cam portion on the rotation track of the cam portion. Each of the sensors is provided with a sensor capable of discriminating an on-off state, and a position discriminating device capable of discriminating each position of the main body portion by a combination of the on-off states of the respective sensors is provided. Since the control unit for controlling the print mode is provided according to the position, the four position positions of the platen gap conversion device (the main body unit) are determined by the position identification device. Individual separately recognized, controlled to be the best print mode at each position, printing can be performed. That is, it is possible to control the print mode according to the thickness of the paper supposed to be the recording material and perform printing on the recording material under optimum printing conditions.

Further, the position identification device has two cam portions which are different in shape and are arranged so as to be displaced in the front-rear direction in a side view, and the cam is provided on the rotation track of the cam portion. Each of the sensors is provided with a sensor that can identify an on / off state depending on whether or not it is in contact with the body, and each position of the main body can be identified by a combination of on / off of each sensor. It is also possible to dispose them relatively close to each other, and to dispose them in substantially the same row in a side view, without providing a new sensor, and in a space-saving manner, it is possible to identify the four possible positions of the platen gap conversion device. is there. Further, it becomes possible to dispose the cam portion and the sensor in a localized portion of the main body portion, which improves the degree of freedom in design. For example, the other portion of the main body portion, that is, the cam portion is disposed. The missing part can be used for another purpose.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 is an enlarged view of a main part of the platen gap conversion device according to the embodiment provided in the recording device at the N position, and FIG.
Is a perspective view, (b) is a side view, FIG. 2 is an enlarged view of a main part of the platen gap conversion device in the + position, (a) is a perspective view, and (b) is a side view. 3 is an enlarged view of a main part of the platen gap conversion device at a ++ position, (a) is a perspective view, (b) is a side view, and FIG. 4 is an enlarged view of a main part at the R position of the platen gap conversion device. It is a figure, (a) is a perspective view,
(B) is a side view. FIG. 5 is a side view of the inkjet printer according to the embodiment at the N position, FIG. 6 is a side view of the printer at the + position, and FIG. 7 is a side view of the printer at the ++ position. 8 is a side view of the printer in the R position.

An ink jet printer (hereinafter referred to as "printer") 100 as a recording apparatus of the present embodiment is
The recording unit 37 has a recording unit 37 for recording on the recording material P.
In 7, the recording material P is fed by the driving roller (41, 43) and the driven roller (42, 44). A head portion 32 that ejects ink is provided at the bottom of the carriage 31, and ink is ejected toward the printing surface K of the recording material P that is separated from the head portion 32 by a certain distance to perform printing. ing. Further, the distance between the printing surface K of the recording material P and the head surface 33 of the head portion 32 and the paper gap “PG” are appropriately adjusted, so that the printing quality can be maintained.

As the recording material to be printed by the printer 100, those having various thicknesses or materials such as plain paper, board paper, envelope, and CD-R are assumed. Therefore, in order to optimize printing conditions such as PG, the printer 100 is provided with a platen gap conversion device 90 that displaces a platen gap that is a distance between the platen 36 that supports the recording material from below and the head surface 33. The user operates the operation lever 2 of the platen gap conversion device 90 to displace the position of the carriage 31 and appropriately adjust the PG according to the type (thickness, etc.) of the recording material. You can do it. That is, the position where the printing surface K is located differs depending on the type of recording material, and it is possible to prevent a situation in which the distance from the head surface 33 becomes smaller as the recording material becomes thicker. .

The position of the carriage 31 is displaced by the platen gap converting device 90 operated according to the recording material, and the distance between the printing surface K of the recording material P and the head surface 33, that is, the paper gap. Can be adjusted appropriately, printing can be performed under optimum conditions, and high printing accuracy can be maintained.

In this embodiment, the user operates the operation lever 2 which is a part of the platen gap converting device 90.
By operating the, the position of the carriage 31 can be displaced via a cam mechanism (not shown), and the platen gap can be adjusted. And
This platen gap converting device 90 has a main body 1 and two cam portions (11 and 21), and the operation lever 2 and the cam portions (11 and 21) are integrated with the main body portion 1 in the main body portion 1. It is formed by molding, and it can take four positions by rotating in the rotating direction 5.

Regarding the above-mentioned four positions, more specifically, as shown in FIGS. 1 and 5, the recording material is plain paper or the like, and the thickness thereof is relatively thin (for example, the thickness is 0.08 to 0.3).
Normal position (hereinafter referred to as "N position") that is set in the case of (mm). 2 and 6,
The + position that is set when the recording material is a board paper, an envelope, or the like and has a relatively large thickness (for example, a thickness of about 0.4 to 1.6 mm). The recording material shown in FIGS. 3 and 7 is C
There is a ++ position that is set when it is D-R.
Furthermore, as shown in FIG. 4 and FIG. 8, when manually setting the recording materials one by one, when manually setting a rigid one such as a CD-R tray on which a CD-R is placed, or when setting the recording material A driving roller (41, 43) for feeding a recording material and a driven roller (4) for removing the recording material from the printer.
2 and 44) are separated from each other and the recording material is opened (hereinafter referred to as “R position”).

Further, as described above, the carriage 31 moves in accordance with the four possible positions of the main body 1, and the head surface 33 of the head 32 and the recording material P are moved.
It is possible to adjust the distance from the printing surface K of the sheet and PG. That is, at the N position, the carriage 31 is at the most lowered position, and the carriage 31 at the + position is the carriage 31 at the N position.
The carriage 31 is in a slightly raised position, and the carriage 31 in the ++ position is in a position slightly raised from the + position. Then, the carriage 31 in the R position
Is in the same or slightly elevated position as the ++ position.

That is, the platen gap at the N position is h1, the platen gap at the + position is h2,
When the platen gap at the ++ position is h3 and the platen gap at the R position is h4, h4 ≧ h
3>h2> h1.

Then, the platen gap converting device 90
Has a body portion 1 integrally formed, an operating lever 2, a first cam portion 11, and a second cam portion 21, and can take the above-mentioned four positions. . Further, the first sensor 10 and the second sensor 20 are provided on the rotation paths of the first cam portion 11 and the second cam portion 21, respectively, and identify the above-mentioned four positions to identify the position identification device. It is possible to perform the function as 80.

The first cam portion 11 and the second cam portion 21 are shown in FIG.
As shown in FIG. 4, the rotation direction 5 of the main body 1 is
Is provided in parallel with, and is offset from the front-back direction in a side view, that is, in the direction of the rotating shaft 35. Further, the first sensor 10 is provided on the rotation trajectory of the first cam portion 11, and the second sensor 20 is provided on the rotation trajectory of the second cam portion 21, and the four positions taken by the main body portion 1 are provided. Can be identified. That is, one sensor (for example, the first sensor 10) is arranged on the rotation track of one cam portion (for example, the first cam portion 11), and the sensor of the cam portion The on-off state can be identified by the presence or absence of contact.
Hereinafter, the cam portion (11, 21) is the sensor (10, 20)
The state where the detecting portion (12, 22) of the sensor is tilted with respect to the sensor body portion (13, 23) is turned on (hereinafter referred to as “H”), and the cam portion (11, 21) )
The state in which is not in contact with the sensor (10, 20) is an off state (hereinafter referred to as “L”).

Hereinafter, the above-mentioned 4 in the present embodiment will be described.
A method of identifying one position will be described. First, when the main body 1 is in the N position (FIG. 1), the first sensor 10 does not come into contact with the first cam portion 11 and becomes L, and the second sensor 20 comes into contact with the second cam portion 21 and becomes H. Becomes When the operation lever 2 is turned to the + position (FIG. 2), the first sensor 10 does not come into contact with the first cam portion 11 and becomes L, and the second sensor 20 comes into contact with the second cam portion 21. It becomes L without doing. When the operation lever 2 is further rotated to the ++ position (FIG. 3), the first sensor 10 comes into contact with the first cam portion 11 and H
Therefore, the second sensor 20 becomes L without coming into contact with the second cam portion 21. When the operation lever 2 is further rotated to the R position (FIG. 4), the first sensor 1
0 is in contact with the first cam portion 11 to be H, and the second sensor 20 is in contact with the second cam portion 21 to be H. The first sensor 10 and the second sensor 10 at each of the N position, the + position, the ++ position, and the R position.
The on (H) -off (L) state of the sensor 20 is shown in FIG.
Shown in.

As described above, by providing the two sensors capable of distinguishing the on (H) -off (L) state as shown in the drawing, it is possible to distinguish four positions. Further, the first cam portion 11 and the second cam portion 21 are
As shown in the figure, the main body 1 has different shapes.
It is provided in the vicinity of being parallel to the rotation direction 5 of the above and displaced in the direction of the rotation axis 35. Therefore, the first sensor 10 and the second cam portion 2 arranged on the rotation path of the first cam portion 11.
The second sensors 20 arranged on the rotation orbit of No. 1 can also be provided at positions close to each other as shown in the drawing, so that no new space is required, that is, space saving, and the space of the main body unit 1 is reduced. It is possible to identify the four positions to get. Further, since the position identification device 80 including the cam portions (11, 21) and the sensors (10, 20) can be provided in a localized portion of the main body portion 1, the platen gap conversion device 90 can be designed freely. Can be further improved.

In other words, conventionally, two sensors are provided on the rotation orbit of a single cam portion, and the two sensors are arranged relatively close to each other, so that only three positions can be identified. There wasn't. However, in the present invention, the two sensors (10, 20) are used in the same manner as in the prior art, and the cam portions contacting the sensors have different shapes for the first cam portion 11 and the second cam 21, respectively. By disposing the first sensor 10 on the rotation track of the cam portion 11 and the second sensor 20 on the rotation track of the second cam portion 21, without adding a new sensor, It is possible to identify the four possible positions of the platen gap conversion device 90 in a space-saving manner.

Therefore, it becomes possible for the position identification device 80 to separately recognize the four positions taken by the platen gap conversion device 90, and to control the print mode by the control unit 38 accordingly. That is, it is possible to improve the following situations, which have occurred because the N position and the + position are not distinguished from each other and only the three positions can be identified.

(1) When printing is performed on thin paper such as plain paper under the conditions of + position and high image quality printing mode (for example, 2880 dpi), uneven printing may occur.
However, it is possible to distinguish N position and + position,
By enabling 4-position identification, when the recording material is the thin paper, control is performed to prohibit execution of the high-quality print mode at the + position,
It is possible to prevent the situation described above from occurring.

(2) When printing is performed on the thick paper such as an envelope or a board at the N position, the head portion 32 comes into contact with the thick paper, and the head portion 32 or the thick paper is defective (for example, the head portion In some cases, damage, stains on the printed surface of cardboard, etc.) occurred. However, by making it possible to discriminate between the N position and the + position and identify four positions, by performing control such that printing at the N position cannot be performed when the recording material is the thick paper, It is possible to prevent the situation described above from occurring. The same applies when the cardboard is manually fed.

(3) When printing without margin on the entire printing surface of the recording material, that is, so-called borderless printing, the printer sets a printing area up to a range larger than the actual size of the recording material. The difference between the print area and the size of the recording material is the so-called protruding print area. Then, the ejection of the ink in the protruding print area is a waste of the ink and causes inconvenience (increased printing cost, stain on the recording material, etc.). The print area is
The presence or absence of a recording material, that is, the edge of the recording material is detected by a paper detection sensor (not shown), printing is performed in the area where the recording material is detected by the paper detection sensor, and the recording material is detected. It is determined by setting not to print in the area that is not printed.

As the paper detection sensor, a light reflection type sensor for detecting the presence or absence of a recording material by receiving emitted light is often used, and the light reflection type paper detection sensor has a characteristic. , The detection timing, that is, the actual paper, depending on the difference in the distance (focal length) between the paper detection sensor and the reflection surface (the printing surface K when the recording material is used, and the platen 36 when the recording material is not used). The distance from the edge is different. For example, if there is no recording material,
Since the distance (focal length) between the head surface 33 and the platen 36 is different between the state where the platen gap conversion device is in the N position and the state where the platen gap conversion device is in the + position, the sheet detection timing by the sheet detection sensor also differs.

Here, the detection of a sheet as a recording material by the sheet detection sensor will be described more specifically with reference to FIG. Note that, here, a description will be given of a case where the state in which the sheet is detected is not detected, that is, the state where the sheet is present is changed to the state where the sheet is not present. Figure 9
The horizontal axis of represents the distance (paper edge position) from the actual paper edge (the actual paper edge has a paper edge position value of 0), and the vertical axis represents the detection value of the paper detection sensor accompanying it. It represents.

First, when the platen gap conversion device is in the N position (dotted line), the detected value starts to rise from around the paper edge position 2, and the value shows a saturated value near around the detected value 4. On the other hand, when the platen gap conversion device is in the + position (solid line), the detected value starts to rise from around the paper edge position 2, and the value shows a saturation value around the detected value 3. Here, for example, when the threshold value for recognizing the presence or absence of paper by the paper detection sensor is set to a detection value obtained by subtracting 0.5 from the saturation value, the paper edge position value at each position is about 4 at the N position. On the other hand, in the + position, it is about 2.8. That is, when the platen gap conversion device is in the N position and the + position,
The detection position of the paper edge by the paper detection sensor (distance from the actual paper edge) is different.

When the platen gap converting device is at the N position or the + position, when performing borderless printing on a sheet, as described above, the printing area is set to be larger than the actual sheet size and printing is performed. To do. When the N position and the + position are indistinguishable from each other as in the conventional case, this printing area is at least the larger paper edge position at which the paper can be detected by the paper detection sensor, that is, the paper edge position in the N position. Was set uniformly as a range including.

However, in the present invention, four positions including the N position and the + position taken by the platen gap conversion device can be discriminated. For example, in the case of the N position, the paper edge position value 2 at that time is 2 Around .8 can be set as the print area, and in the case of the + position, around the paper edge position value 4 at that time can be set as the print area. Therefore, it is possible to individually set the print area according to the position taken by the platen gap conversion device, and as a result, it is possible to reduce the protruding print area.

[0041]

By providing two sensors capable of distinguishing the on-off state, the two sensors can be turned on-on.
With the combination of OFF, four positions can be identified. That is, conventionally, in order to identify the four positions, it is necessary to increase the number of sensors, dispose the two sensors apart from each other, and use different cam portions.
This was a cause of increasing the size and cost of the device. However, in the present invention, since the cam portions have different shapes and are arranged so as to be displaced in the front-rear direction in the side view, the two sensors are arranged relatively close to each other and further arranged in the same row in the side view. It is possible to dispose them, and it is possible to identify 4 positions in a space-saving manner without providing a new sensor. Further, since the cam portion and the sensor can be arranged in a localized portion of the main body portion, the degree of freedom in design is improved. For example, the other portion of the main body portion, that is, the portion where the cam portion is not arranged. Can be used for other applications.

[Brief description of drawings]

FIG. 1 is an enlarged view of a main part of a platen gap conversion device according to an embodiment provided in a recording device at an N position, in which (a) is a perspective view and (b) is a side view.

FIG. 2 is an enlarged view of a main part of the platen gap conversion device in a + position, in which (a) is a perspective view and (b) is a side view.

3A and 3B are enlarged views of a main part of the platen gap conversion device at a ++ position, where FIG. 3A is a perspective view and FIG.
Is a side view.

FIG. 4 is an enlarged view of a main part of the platen gap conversion device at an R position, in which (a) is a perspective view and (b) is a side view.

FIG. 5 is a schematic side view of an essential part of the inkjet printer according to the embodiment at the N position.

FIG. 6 is a schematic side view of essential parts of the printer in a + position.

FIG. 7 is a schematic side view of essential parts of the printer in a ++ position.

FIG. 8 is a schematic side view of an essential part of the printer in an R position.

FIG. 9 is a diagram for explaining detection of a sheet edge portion by a sheet detection sensor at an N position and a + position.

FIG. 10 is a diagram showing an on (H) -off (L) state in each position of each sensor.

[Explanation of symbols]

1 body 2 Operation lever 5 Rotation direction 10 First sensor 11 First cam part 12 First sensor detector 13 1st sensor body 20 Second sensor 21 2nd cam part 22 Second sensor detector 23 Second sensor body 31 carriage 32 head 33 head surface 35 rotation axis 36 Platen 37 Recording Section 38 Control unit 41 First drive roller 42 First driven roller 43 Second drive roller 44 Second driven roller 80 Position identification device 90 Platen gap converter 100 inkjet printer Platen gap at h1 N position Platen gap at h2 + position Platen gap at h3 ++ position Platen gap at h4 R position K Printing surface of recording material P Recording material

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Claims (4)

[Claims] 1. A main body section having two different cam shapes, which are arranged offset from each other in a front-back direction in a side view, and takes four positions by rotating, and the cam section. Sensors that can identify the on / off state depending on the presence or absence of contact with the cam portion are respectively provided on the rotation trajectory of the, and the four positions of the main body portion can be identified by the combination of the on / off states of the sensors. A position identification device characterized by being possible. 2. The cam portion according to claim 1, wherein the cam portion has a convex structure, a concave structure, or a combination thereof, and is parallel to the rotating direction, and each cam portion is near the rotating shaft direction. A position identification device, which is provided at a location. 3. The body according to claim 1, wherein the main body has an operation lever for rotating the main body, and the operation lever and the cam are provided on the main body.
A position identification device, wherein the position identification device is formed integrally with the main body. 4. A recording apparatus having a main body section, a platen gap converting apparatus capable of displacing a platen gap by taking four positions by rotating, and a recording section, wherein the main body section comprises: It has two cam portions which are different in shape and are displaced from each other in the front-rear direction in a side view, and are turned on and off depending on whether or not there is contact with the cam portion on the rotation track of the cam portion. Each of the sensors is provided with a state identifiable sensor, and a position identification device capable of identifying each position of the main body by a combination of ON and OFF of each sensor is provided. According to the position recognized by the position identification device. The recording apparatus is provided with a control unit for controlling the print mode.