JP2000301706A - Ink jet printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly prevent the leakage of ink by providing a carriage fixing projected part, which comes into contact with a carriage when a cover portion is closed to hold the carriage, to the cover portion. SOLUTION: The carriage holding projected part 28 integrally provided to a cover portion 23 along with a wiper case lid 29 and a preparatory emitting box lid 30 is present at a home position to hold a carriage 1 for capping a head 6 with a cap 7. By this constitution, since the carriage 1 can be held by the carriage holding projected part 28 when the cover portion 23 is closed, the carriage 1 is shifted from the home position when an impact is applied to a main body 25 and the head 6 is detached from the cap 7 and, therefore, the leakage of ink in the cap 7 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable ink jet printer provided with a head for printing on a printing object with ink.

[0002]

2. Description of the Related Art A conventional portable ink-jet printer will be described below with reference to FIGS.

FIG. 19 is a top view (excluding an upper cover) of a conventional portable ink jet printer, and FIG. 20 is a sectional view taken along line QQ of FIG.

As shown in FIG. 19, the carriage 1 is attached to a belt 4 attached to a pulley 3 to which drive from the main scanning motor 2 has been transmitted by a belt fixing portion 5 to drive the main scanning motor 2. By doing so, it moves in the P direction. At this time, the carriage 1 moves while being supported by the main rail 38 and the sub rail 39.

[0005] As shown in FIG.
The head 6 attached to the head is capped by the cap 7 when printing is not performed.

A wiper 8 for cleaning the head 6 after printing with the head 6 is mounted in a wiper case 9, and the wiper case 9 is supported by a support plate 10. The support plate 10 is attached to the side plate (R) 11.

Next to the wiper case 9, the preliminary discharge box 1
2 are provided. The preliminary ejection box 12 is for receiving the ejected ink when the head 6 has ejected the ink before printing in order to keep the meniscus of the nozzle of the head 6 constant. The pre-discharge box 12 is attached to the support plate 10,
Is attached to the side plate (R) 11.

A waste liquid tube 14 is attached to the preliminary discharge box 12, and the waste liquid tube 14 is
3 is connected. Therefore, the ink discharged from the head 6 into the preliminary discharge box 12 passes through the waste liquid tube 14 and is absorbed by the waste liquid absorber 13.

The cap 7 is provided with the suction tube 2.
By connecting the cap 7 to the head 6, the suction pump is operated after the cap 7 is brought into close contact with the head 1 to suck out fine dust and high-viscosity ink in the nozzles of the head 6. There is work.

The main tank 37 is formed integrally with the head 6, supplies ink from the main tank 37 to the head 6, and the head 6 discharges ink.

FIG. 21 is a diagram showing a configuration of the carriage 1 shown in FIG.
21 is a sectional view taken along the line RR in FIG. 20 in a case where has moved to the left from the line RR and the printing paper 15 has been inserted. The printing paper 15 is inserted in the R direction and discharged from the S direction. When the printing paper 15 is inserted from the R direction, first, the printing paper 15 is sandwiched between the manual feed roller 17 and the manual driven driven roller 16,
The printing paper 15 is fed in the T direction by the manual feed roller 17 and the manual feed driven roller 16. After that, the printing paper 15
The paper passes over the platen 20, is sandwiched between the feed roller 19 and the feed driven roller 18, is fed in the T direction, and is discharged from the paper discharge port 22. Also, when the printing paper 15 is present on the platen 20, the head 6 attached to the carriage 1
When the ink is discharged onto the printing paper 15, the printing paper 1
5 is formed.

The appearance of the main body 25 includes a case 24,
It is formed by a cover part 23 attached to a case 24 by a hinge part 26. The cover portion 23 is closed when the main body 25 is carried.

[0013]

In the conventional portable ink jet printer, when the user shakes the portable ink jet printer while carrying it or applies an impact to the portable ink jet printer while carrying the portable ink jet printer, the carriage inside the main body is displaced from the home position, and the cap 7 is closed. Ink leaks out, and thereafter, the ink leaks from the space between the case and the cover of the main body to the outside, thereby contaminating the user's hands, the abandoned desks, and the like.

In addition, when the portable device is tilted or carried with its non-regular bottom surface down when carried, ink is leaked from the preliminary discharge box 12 and the wiper case 9 and then the case 24 of the main body is moved. And the cover portion 23 leaks to the outside, and contaminates the user's hands and the abandoned desks. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the related art, and an object of the present invention is to provide a portable ink jet printer that can reliably prevent leakage of ink.

[0015]

In order to achieve the above object, according to the present invention, there is provided a carriage mounted with a head for performing printing on an object to be printed with ink and reciprocating on the object to be printed. A case that accommodates the head and the carriage, and a cover portion that is provided to be openable and closable with respect to the case. In the inkjet printer, when the cover portion is closed, the carriage abuts on the carriage. And a carriage fixing projection for holding the carriage.

With this configuration, the carriage is pressed by the carriage fixing protrusion of the cover, and the carriage does not move in the case because the carriage is swung or tilted.

In this case, it is preferable to have a cap for sealing the head when printing is not performed, and to hold the head in a state where the head is sealed with the cap by the carriage fixing projection.

Since the carriage is held by the carriage fixing projection, the cap is detached from the head and the ink in the cap leaks out, so that the ink is prevented from leaking outside from between the case and the cover.

Further, if a seal member is provided at the joint between the cover and the case, it is possible to reliably prevent the leakage of the ink to the outside.

Further, if the carriage fixing projection is made of an elastic member, the carriage can be fixed more reliably.

A wiper portion for wiping the head and a wiper case provided around the wiper portion are provided in the case, and the wiper portion is provided in the cover portion when the cover portion is closed. A wiper case lid is provided to close the wiper case in close contact with the opening of the case.

In this way, leakage of ink from the wiper case can be prevented.

If the wiper case lid is made of an elastic member, the opening of the wiper case can be reliably sealed.

A pre-discharge box for receiving a part of the ink discharged from the head is provided in the case, and the cover is closed at an opening of the pre-discharge box when the cover is closed. A pre-discharge box lid is provided to closely close the pre-discharge box.

In this way, it is possible to prevent the ink from leaking from the preliminary ejection box.

If the preliminary discharge box lid is also made of an elastic member, the opening of the preliminary discharge box can be more reliably sealed.

Further, the head energizes the electrothermal transducer in response to a signal, and discharges ink using thermal energy generated by the electrothermal transducer.

This makes it possible to realize an ink jet printer that is small in size and suitable for carrying.

[0029]

[Embodiment 1] Hereinafter, an ink jet printer according to Embodiment 1 of the present invention will be described with reference to FIG.
This will be described in detail with reference to FIGS.

The ink jet printer according to the present embodiment is a portable ink jet printer suitable for carrying, as in the conventional example. First, the external configuration will be described with reference to FIGS.

FIG. 1 is a front view of a portable ink jet printer, FIG. 2 is a top view of the portable ink jet printer, and FIG. 3 is a side view of the portable ink jet printer.

In FIG. 1, the external appearance of the main body 25 is composed of a case 24 and a cover 23. A paper passage 27 is provided in the case 24. Further, as shown in FIG. 2, the cover 23 is connected to the case 24 by a hinge 26, and is rotated in the direction A to be opened and closed with respect to the case 24 as shown in FIG.

Next, the internal structure of the main body 25 will be described. 4 is a sectional view taken along line BB of FIG. 2, and FIG. 5 is a sectional view taken along line CC of FIG.

As shown in FIG. 4, the carriage 1 is attached to a belt 4 attached to a pulley 3 to which the drive from the main scanning motor 2 has been transmitted by a belt fixing portion 5, and the main scanning motor 2 Is moved in the direction D in the figure. At this time, the carriage 1 moves while being supported by the main rail 38 and the sub rail 39.

As shown in FIG. 5, the head 6 attached to the carriage 1 is capped by the cap 7 when printing is not performed.

A wiper 8 for cleaning the head 6 after printing with the head 6 is mounted in a wiper case 9, and the wiper case 9 is supported by a support plate 10. The support plate 10 includes a side plate (R) 11
Attached to.

Next to the wiper case 9, the preliminary discharge box 1
2 are provided. The preliminary ejection box 12 is for receiving the ejected ink when the head 6 has ejected the ink before printing in order to keep the meniscus of the nozzle of the head 6 constant. The pre-discharge box 12 is attached to the support plate 10,
Is attached to the side plate (R) 11.

A waste liquid tube 14 is attached to the preliminary discharge box 12, and the waste liquid tube 14 is
It is connected to. Therefore, the ink discharged from the head 6 into the preliminary discharge box 12 is absorbed by the waste liquid absorber 13 through the waste liquid tube 14.

The cap 7 is connected to the suction tube 2.
By connecting the cap 7 to the head 6, the suction pump is operated after the cap 7 is brought into close contact with the head 1 to suck out fine dust and high-viscosity ink in the nozzles of the head 6. There is work.

The ink tank 37 is formed integrally with the head 6, supplies ink from the main tank 37 to the head 6, and the head 6 discharges ink.

FIG. 6 shows that the carriage 1 is
-When moving to the left from the section line E and printing paper 1
FIG. 6 is a cross-sectional view taken along the line EE of FIG. The printing paper 15 is inserted in the F direction and discharged from the G direction.
When the printing paper 15 is inserted from the F direction, the printing paper 15 is first sandwiched between the manual feed roller 17 and the manual driven roller 16, and
The printing paper 15 is sent in the direction. Then, print paper 15
Is passed between the feed roller 19 and the feed driven roller 18 through the platen 20, is fed in the H direction, and is discharged from the paper discharge port 22.

When the printing paper 15 is present on the platen 20, ink is ejected from the head 6 attached to the carriage 1 onto the printing paper 15, so that an image is formed on the printing paper 15.

The cover 23 is closed when the main body 25 is carried. As shown in FIG. 5, the cover portion 23 is integrally provided with a carriage holding projection 28, a wiper case cover 29, and a preliminary ejection box cover 30.

The carriage holding projection 28 is located at the home position, and holds the carriage 1 in which the head 6 is capped by the cap 7. Therefore, by closing the cover 23, the carriage 1 can be held by the carriage holding projection 28. When the main body 25 is subjected to an impact when the main body 25 is carried, the carriage 1 is displaced from the home position. It is possible to prevent the head 6 from coming off the cap 7 and the ink in the cap 7 from leaking.

FIG. 7 is a sectional view taken along the line II of FIG. As shown in FIG. 7, when the cover 23 is closed with respect to the main body 25, the carriage 1 is held by the carriage holding protrusion 28. Cap 7 is head 6
When the cam 43 is driven by a drive system (not shown) with the cam shaft 42 as the center of rotation, the cap lever 40 moves up and down with the cap shaft 41 as the center of rotation. As a result, the cap 7 can be brought into contact with and separated from the head 6. The cap shaft 41 is supported by a cap support plate 44.

FIG. 8 shows a state in which the cover 23 is rotated with respect to the main body 25 in FIG. FIG.
As shown in (1), the carriage 1 is not held by the carriage holding projection 28, and therefore can move freely.

Next, FIG. 9 shows a sectional view taken along the line JJ of FIG.

As shown in FIG. 9, the cover 23 is
5, the wiper case lid 29 provided integrally with the cover portion 23 is in contact with the wiper case 9, and the wiper case 9 is disposed between the wiper case 9 and the wiper case lid 29. Leakage of ink in the case 9 is prevented. In addition, the cover part 23 includes a nail 31.
When the cover 23 is closed with respect to the main body 25, the claw 31 is engaged with the concave portion 32 provided in the case 24. When the cover part 23 is rotated with respect to the main body 25, the spring part 33 bends and the claw 31 is bent.
Is disengaged from the concave portion 32, and the cover portion 23 rotates with respect to the main body 25. FIG. 10 shows a state in which the cover 23 is rotated with respect to the main body 25 in FIG.

As shown in FIG. 10, the wiper case lid 29 is separated from the wiper case 9, and the head 6 can be cleaned by the wiper 8.

Next, FIG. 11 shows a sectional view taken along the line KK of FIG.

As shown in FIG. 11, when the cover 23 is closed with respect to the main body 25, the pre-discharge box lid 30 provided integrally with the cover 23 is
, The preliminary discharge box 12 and the preliminary discharge box lid 3
The leakage of the ink in the preliminary ejection box 12 from between 0 is prevented.

FIG. 12 shows a state in which the cover 23 is rotated with respect to the main body 25 in FIG.

As shown in FIG. 12, the preliminary ejection box cover 30 is separated from the preliminary ejection box 12 and can receive ink from the head 6.

Next, an enlarged view of a portion L in FIG. 11 is shown in FIG.
(A).

As shown in FIG. 13A, the cover 2
A groove 34 is provided in 3, and a part of an elastic member 35 as a seal member is inserted into the groove 34. Therefore, when the cover 23 is joined to the case 24, the elastic member 35 is contracted and deformed.
Is arranged on the entire circumference of the cover 23, so that the ink inside the main body 25 does not leak out from between the cover 23 and the case 24.

FIG. 13B shows a state in which the cover 23 is separated from the case 24. At this time, since the elastic member 35 is not deformed, it protrudes from the end face 36 of the cover 23.

FIG. 14 is a front view of the main body with the cover 23 opened with respect to the main body 25.

A groove 34 is provided on the entire circumference of the cover 23, and an elastic member 35 is inserted into the groove 34. The cover 23 is integrally formed with a carriage holding projection 28, a wiper case cover 29, a preliminary ejection box cover 30, and a claw 31.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 15 is a front view of the portable ink-jet printer (with a case and a part of a cover part removed), FIG. 16 is a cross-sectional view taken along line MM of FIG. 15, and FIG.
FIG. 18 is a sectional view taken along the line OO of FIG.

In the present embodiment, the carriage holding elastic member 45 is attached to the abutting portion of the carriage holding projection 28 with the carriage 1 and the wiper case lid 29 is brought into contact with the wiper case 9 in the first embodiment. The wiper case elastic member 46 is provided in the
The preliminary discharge box elastic member 47 is provided in the contact portion with the above.

Since the other structure is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and the description of those portions will be omitted.

The above-described carriage holding elastic member 45, wiper case elastic member 46, and preliminary ejection box elastic member 47
Since all are made of elastic members (rubber (chloroprene rubber, urethane rubber, silicon rubber, etc.), sponge, etc.), the carriage holding elastic member 45, the wiper case elastic member 46, the spare The discharge box elastic member 47 includes the carriage 1, the wiper case 9,
It is good also as a structure which overlaps with the preliminary discharge box 12. The cover 2 can be formed by overlapping.
When the shutter 3 is closed, the carriage holding elastic member 45, the wiper case elastic member 46, and the preliminary discharge box elastic member 47 are compressed and deformed, so that the carriage 1 is fixed, the wiper case 9 and the wiper case elastic member 46 are joined, and the preliminary discharge is performed. The connection between the box 12 and the pre-discharge box elastic member 47 is further ensured, and ink leakage between the head 6 and the cap 7, ink leakage between the wiper case 9 and the wiper case elastic member 46, and the preliminary discharge box 12 It is possible to more reliably prevent the leakage of ink from between the elastic member 47 and the preliminary ejection box.

The head 6 of the above-described ink jet printer includes a fine liquid discharge port (orifice), a liquid path, an energy action section provided in a part of the liquid path, and a droplet forming section which acts on the liquid in the action section. An energy generating means for generating energy is provided.

As an energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, an electromagnetic wave such as a laser is irradiated to generate heat, and droplets are discharged by the action of the heat. There are a recording method using an energy generating means, and a recording method using an energy generating means for discharging a liquid by heating a liquid by an electrothermal converter such as a heating element having a heating resistor.

Among them, a recording head used in an ink jet recording method for discharging a liquid by thermal energy has a high density liquid discharge port (orifice) for discharging a recording droplet to form a discharge droplet. Since they can be arranged, high-resolution recording can be performed. Among them, a recording head using an electrothermal transducer as an energy generating means is advantageous because it can be easily made compact, easily mounted at a high density, and inexpensively manufactured.

In the present embodiment, the ink is ejected by energizing the electrothermal transducer in accordance with the recording signal, and utilizing the film boiling caused by the thermal energy to grow and shrink the bubbles generated in the ink. The recording is performed by discharging the ink from the discharge port.

As for the representative configuration and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4,740,796. This method can be applied to any of the so-called on-demand type and continuous type. In particular, in the case of the on-demand type, it is arranged corresponding to a sheet or a liquid path holding a liquid (ink). By applying at least one drive signal corresponding to the recorded information and providing a rapid temperature rise above nucleate boiling,
This is effective because heat energy is generated in the electrothermal transducer, thereby causing film boiling on the heat-acting surface of the recording head. As a result, bubbles in the liquid corresponding to this drive signal one-to-one can be formed. The liquid is ejected through the ejection opening by the growth and contraction of the bubble to form at least one droplet. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are immediately and appropriately performed, and therefore, particularly excellent liquid ejection can be achieved, which is more preferable.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable.

Further, if the conditions described in US Pat. No. 4,313,124 of the invention relating to the temperature rise rate of the heat acting surface are adopted, more excellent recording can be performed.

As the configuration of the recording head, in addition to the combination of a discharge port, a liquid path, and an electrothermal converter (a linear liquid flow path or a right-angle liquid flow path) as disclosed in the above-mentioned respective specifications, The present invention also includes a configuration using U.S. Pat. Nos. 4,558,333 and 4,459,600 which disclose a configuration in which a heat acting portion is arranged in a bending region.

Japanese Unexamined Patent Publication (Kokai) No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal transducer for a plurality of electrothermal transducers, or an aperture for absorbing pressure waves of thermal energy. Unexamined Japanese Patent Application Publication No.
The effect of the present invention is effective even in a configuration based on JP-A-59-138461. That is, according to the present invention, the recording can be performed reliably and efficiently regardless of the form of the recording head.

In addition, even in the case of the serial type described above, the recording head fixed to the carriage or mounted on the carriage enables electrical connection with the apparatus main body and supply of ink from the apparatus main body. A replaceable chip type recording head or a cartridge type recording head in which an ink tank is provided integrally with the recording head itself may be used.

It is preferable to add recording head recovery means, preliminary auxiliary means, and the like provided as components of the recording apparatus of the present invention since the effects of the present invention can be further stabilized. To be more specific, capping means for the recording head, cleaning means, pressurizing or suctioning means, preheating means using an electrothermal conversion type or another heating element or a combination thereof, and printing Performing a preliminary ejection mode for performing another ejection is also effective for performing stable printing.

The type and number of recording heads mounted on the carriage are, for example, not only those provided for one color ink but also a plurality of inks having different recording colors and densities. May be provided in plurality. That is, for example, the printing mode of the printing apparatus is not limited to a printing mode of only a mainstream color such as black, and may be a combination of a plurality of print heads integrally formed. To at least one of the full-color devices.

In addition, in the above-described embodiment, the ink is described as a liquid. However, an ink which solidifies at room temperature or lower and which softens or liquefies at room temperature, or an ink jet recording system The ink itself
Generally, the temperature is controlled within the range of 30 ° C or more and 70 ° C or less to control the temperature so that the viscosity of the ink is in the stable ejection range. Good. In addition, actively prevent the temperature rise due to thermal energy by using the energy of the state change from the solid state of the ink to the liquid state,
Alternatively, an ink that solidifies in a standing state for the purpose of preventing evaporation of the ink is used, and in any case, the ink is liquefied by application of heat energy according to a recording signal, and a liquid ink is discharged, or a recording sheet is used. It is also applicable to a case where an ink having a property of being liquefied for the first time by thermal energy, such as an ink which starts to solidify at the time when the temperature reaches.

The ink in such a case is disclosed in JP-A-54-5
No. 6847 or Japanese Patent Application Laid-Open No. Sho 60-71260, in which the porous sheet is opposed to the electrothermal converter in a state of being held as a liquid or solid substance in the concave portion or through hole of the porous sheet. It is good. The most effective one for each of the above-mentioned inks is to execute the above-described film boiling method.

Further, as the form of the above-mentioned ink jet recording apparatus, in addition to the one used as an image output terminal of an information processing apparatus such as a computer, a copy apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function May be used.

[0079]

As described above, according to the present invention,
When the cover is closed, a carriage fixing projection is provided to abut the carriage on which the head is mounted to hold the carriage, so that the carriage is pressed by the carriage fixing projection of the cover, and the carriage is shaken or tilted while being carried. Does not move in the case.

In this case, if a cap for sealing the head is provided when printing is not performed, and the head is held in a state where the head is sealed by the carriage fixing projection, the cap is The ink in the cap is prevented from leaking out of the cap, and the ink is prevented from leaking outside from between the case and the cover.

Further, if a seal member is provided at the joint between the cover and the case, it is possible to reliably prevent the ink from leaking to the outside.

Further, if the carriage fixing projection is made of an elastic member, the carriage can be fixed more reliably.

The cover is provided with a wiper case lid which closes the opening of the wiper case when the cover is closed to close the wiper case.
Ink leakage from the wiper case can also be prevented.

If the wiper case lid is formed of an elastic member, the opening of the wiper case can be reliably sealed.

Further, the cover member is provided with a preliminary discharge box lid which closes the preliminary discharge box when the cover member is closed to close the opening of the preliminary discharge box. Leakage can also be prevented.

When the lid of the preliminary discharge box is also made of an elastic member, the opening of the preliminary discharge box can be more reliably sealed.

Further, if the head is configured to energize the electrothermal transducer in response to a signal and to discharge ink using thermal energy generated by the electrothermal transducer, the head can be made compact and portable. A suitable inkjet printer can be realized.

[Brief description of the drawings]

FIG. 1 is a front view of a portable inkjet printer according to Embodiment 1 of the present invention.

FIG. 2 is a top view of the portable inkjet printer of the present invention.

FIG. 3 is a side view of the portable ink-jet printer of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is a sectional view taken along line EE of FIG. 5;

FIG. 7 is a sectional view taken along the line II of FIG. 5;

FIG. 8 is a view showing a state where the cover portion 23 is rotated with respect to the main body 25 in FIG. 7;

FIG. 9 is a sectional view taken along the line JJ of FIG. 5;

FIG. 10 is a view showing a state in which the cover part 23 of FIG.
Figure in a state rotated with respect to 5

FIG. 11 is a sectional view taken along the line KK of FIG. 5;

FIG. 12 is a view showing a state where the cover unit 23 is rotated with respect to the main body 25 in FIG. 11;

13 (a) is an enlarged view of a portion L in FIG. 11, FIG.
FIG. 3B shows a state in which the cover 23 is separated from the case 24.

FIG. 14 is a front view of the main body in a state where a cover portion 23 is opened with respect to the main body 25;

FIG. 15 is a front view of a portable inkjet printer according to a second embodiment of the present invention.

FIG. 16 is a sectional view taken along the line MM of FIG. 15;

FIG. 17 is a sectional view taken along line NN in FIG. 15;

FIG. 18 is a sectional view taken along the line OO of FIG. 15;

FIG. 19 is a top view of a conventional portable ink jet printer.

FIG. 20 is a sectional view taken along line QQ of FIG. 19;

FIG. 21 is a sectional view taken along line RR of FIG. 20;

[Explanation of symbols]

 1: Carriage 2: Main scanning motor 3: Pulley 4: Belt 5: Belt fixing part 6: Head 7: Cap 8: Wiper 9: Wiper case 10: Support plate 11: Side plate (R) 12: Pre-discharge box 13: Waste liquid Absorber 14: Waste liquid tube 15: Printing paper 16: Manual feed driven roller 17: Manual feed roller 18: Feed driven roller 19: Feed roller 20: Platen 21: Suction tube 22: Paper discharge port 23: Cover part 24: Case 25: Main body 26: Hinge part 27: Paper passage port 28: Carriage holding projection part 29: Wiper case lid 30: Pre-discharge box lid 31: Claw 32: Recess 33: Spring part 34: Groove part 35: Elastic member 36: End face 37: Main tank 38: Main rail 39: Sub rail 40: Cap lever 41: Cap shaft 42: Cam shaft 43: Cam 44: cap support plate 45: carriage holding elastic member 46: wiper case elastic member 47: preliminary discharge box elastic member

Claims (9)

[Claims] 1. A carriage mounted with a head for performing printing on an object to be printed with ink and reciprocating on the object to be printed, a case accommodating the head and the carriage, and a case capable of being opened and closed with respect to the case. An ink jet printer, comprising: a cover portion provided in the ink jet printer, wherein the cover portion is provided with a carriage fixing protrusion for holding the carriage by contacting the carriage when the cover portion is closed. 2. The printing apparatus according to claim 1, further comprising a cap for sealing the head when printing is not performed, and holding the head with the cap fixed by the carriage fixing protrusion. The ink-jet printer as described. 3. The ink jet printer according to claim 1, wherein a seal member is provided at a joint between the cover and the case. 4. The ink jet printer according to claim 1, wherein said carriage fixing protrusion is formed of an elastic member. 5. A wiper portion for wiping the head and a wiper case provided around the wiper portion are provided in the case, and the cover portion is provided when the cover portion is closed. The inkjet printer according to any one of claims 1 to 4, wherein a wiper case lid is provided to close the wiper case in close contact with the opening of the wiper case. 6. The ink jet printer according to claim 5, wherein the wiper case lid is formed of an elastic member. 7. A pre-discharge box for receiving a part of ink discharged from the head is provided in the case, and an opening of the pre-discharge box is provided in the cover when the cover is closed. The ink jet printer according to any one of claims 1 to 6, further comprising a preliminary discharge box lid portion that closes the preliminary discharge box in close contact with the printer. 8. The ink jet printer according to claim 7, wherein the preliminary ejection lid is formed of an elastic member. 9. The head according to claim 1, wherein the head energizes the electrothermal transducer in response to a signal, and discharges ink using thermal energy generated by the electrothermal transducer. An inkjet printer according to any of the above items.