JPH0596809A - Serial device - Google Patents

Abstract

PURPOSE:To prevent a carriage from being raised and diminish an irregular feed even when a signal cable connected to the carriage becomes stiff. CONSTITUTION:Before a carriage mounted on a recording head 8a is driven to perform printing, the carriage 9 is put in idle scanning operation. Thereby, even when a cable 12 connected to the carriage 9 becomes stiff due to low temperatures, the idle scanning operation of the carriage 9 makes the cable 12 soft, so that the carriage 9 is prevented from being raised by the repulsion force of the cable 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a serial device for moving a carriage to read an image or record an image.

[0002]

2. Description of the Related Art A serial recording device is well known as a device for performing a serial scan of a carriage, but other than that, a reading means is mounted on the carriage and serially scans it to obtain information described in an original document. There is a serial reader for reading.

In the serial reader, for example, as shown in FIG. 8, a carriage 50 is mounted slidably along a guide rail 51, and the carriage 50 is reciprocally movable by driving a motor 52. Simultaneously with serial scanning of the carriage 50, the light source 53 is turned on to irradiate the original 54 with light, and the reflected light is received by a photoelectric conversion element (not shown) via the lens 55, and the information written in the original is converted into an electric signal by a signal cable. By 56, it is transmitted to the control means (not shown).

In such a serial reader,
If the distance between the moving carriage 50 and the document surface fluctuates, accurate reading cannot be performed. Therefore, as shown in the side sectional view of FIG. 9, the carriage 50 fitted to the guide rail 51 hits the apparatus frame 57 by its own weight. The carriage 50 is positioned by making contact with each other and sliding the sliding piece 58 provided at the corresponding contact portion while contacting the frame 57.

[0005]

However, since the signal cable 56 is a so-called ribbon cable in which a plurality of signal lines are covered with heat resistant vinyl, the heat resistant vinyl is hardened at low temperatures. Therefore, when the carriage 50 waiting in the state shown in FIG. 10A is moved in the direction of the arrow to start reading, the signal cable 56 has a bending tendency due to curing as shown in FIG. 10B. (The shaded area in FIG. 10B). Similarly, when the cable area that was flat in the standby state is bent after the start of recording, the habit of flattening remains. Due to the bending habit and the habit of flattening, a repulsive force F is generated, and the compact and lightweight carriage 50 made of a mold or the like is lifted in the direction of the arrow m, and the lens 55 is out of focus and accurate reading cannot be performed. was there.

The above-mentioned inconvenience is the same not only in the reading device but also in the recording device. For example, in a serial type recording device, the distance between the recording material and the ink ejection surface of the recording head is set to be as small as possible, but the signal cable connected to the carriage equipped with the recording head is hardened. As a result, the repulsive force as described above may occur and the distance between the recording head and the recording material may change.

Particularly in the ink jet recording apparatus,
In the case of a configuration in which ink is supplied to the recording head from an ink tank installed at a predetermined position of the apparatus main body, since the ink tank and the recording head are connected by a tube, curing of not only the signal cable but also the tube is taken into consideration. Uneven feeding is more likely to occur.

An object of the present invention is to solve the conventional problems described above. Even if the signal cable or the like is hardened, uneven feeding of the carriage can be eliminated in the work such as reading or recording, and accurate work can be performed. It is intended to provide a serial device.

[0009]

A typical means for achieving the above object according to the present invention is a carriage movable in the apparatus, and a working means mounted on the carriage for performing a predetermined work. And one end of which is connected to the carriage and the other end of which is connected to a part other than the carriage, the transmission means for transmitting a work element to the working means, and the carriage before starting the work by the working means. It is characterized in that a control means for controlling to reciprocate is provided.

[0010]

In the above means, since the carriage is idly fed before starting the work, even if the signal cable or the like is hardened at a low temperature, the hardened cable or the like is softened by the idling. The unevenness in carriage feeding during the work is eliminated.

[0011]

【Example】

[First Embodiment] Next, a first embodiment of the present invention to which the above means is applied will be described with reference to FIGS. 1 is a perspective view illustrating the configuration of an image forming apparatus having a reading device R, FIG. 2 is a cross-sectional explanatory view thereof, FIG. 3 is a control block diagram, and FIG. 4 is a flowchart showing a recording operation procedure. is there.

(Overall Description) First, the overall configuration of the image forming apparatus will be described. This apparatus is composed of a reading device R and a recording device P.
have. The reading device R is configured such that the reading unit 1 as a working unit is provided on the reading carriage 2, and the carriage 2 can reciprocate in the main scanning direction (direction of arrow a in FIG. 1). The carriage 2 is attached to the reading unit 3, and the unit 3 is configured to be capable of reciprocating in the sub-scanning direction (direction of arrow b in FIG. 1).

Therefore, as shown in FIG. 2, the original 5 is placed with the original surface facing down on the original table glass 4 attached to the upper surface of the apparatus.
When the copy key (not shown) is pressed while the document is placed and fixed by the cover 6, the carriage 2 moves in the main scanning direction to read one line of the original, and the information is shown via the signal cable 7 Not transmitted to the control system. When one line has been read as described above, the carriage 2
Is returned to the home position, the reading unit 3 is moved by one line in the sub-scanning direction, and the next and subsequent lines are read in the same manner as described above.

The recording device P is constructed such that the recording means 8 as a working means is mounted on the recording carriage 9 and the recording material conveying means 10 conveys the recording material 11 to the position of the recording means 8. Has been done.

Therefore, when the reading signal from the reading device R is transmitted through the signal cable 7, the recording material 11 is conveyed by the conveying means 10 in the direction of arrow c in FIG. 2, and the recording material 11 is recorded. When the recording carriage 9 is conveyed to the position, the recording carriage 9 reciprocates in the direction of arrow d in FIG. 1, and in synchronization with this movement, the recording means 8 is driven according to the image signal transmitted via the signal cable 12, An image is recorded on the recording material 11. When the recording for one line is completed, the recording material 11 for one line is conveyed in the direction of arrow c in FIG. 2 and recording is performed in the same manner, and the recording material 11 after recording is discharged to the discharge tray 13.

When the reading operation by the reading means 1 and the recording operation by the recording means 8 are performed, the control means idle-feeds the carriages 2 and 9 before each operation, and then reads or records, as will be described later. I'm trying to do.

Next, the structure of each part of the image forming apparatus will be sequentially described in detail. First, each part of the reading device R will be described. (Reading Means) The reading means 1 performs a reading operation of optically reading the information written on the original 5 and converting it into an electric signal. As shown in FIG. 2, light is emitted from the light source 1a onto the original surface, and the reflected light is CC-illuminated through the lens 1b.
The photoelectric conversion element 1c such as D is transmitted to the photoelectric conversion element 1c, is converted into an electric signal by the element 1c, and is sent to the recording apparatus P as an image signal.

(Signal cable) The photoelectric conversion element 1
c is attached to the board 1d, one end of the signal cable 7 is connected to the board 1d via the carriage 2, and the other end of the cable 7 is connected to a connector of the apparatus main body connected to a control unit described later. This signal cable 7 is the light source 1
It constitutes a transmission means for transmitting a work element such as a lighting control signal of a and an electric signal from the photoelectric conversion element 1c to the control unit, and is configured as a ribbon cable in which a plurality of signal lines are covered with heat resistant vinyl. There is.

(Reading Carriage) The reading carriage 2 moves the reading means 1 in the main scanning direction. The reading means 1 is attached to the reading carriage 2 so as to be slidable on the main scanning rail 2a. And the rail 2
A drive pulley 2b and a driven pulley 2c are attached near both ends of a, and a timing belt 2d stretched between the pulleys 2b and 2c is connected to the reading carriage 2. Further, a reading main scanning motor 2e is connected to the drive pulley 2b. Therefore, the main scanning motor 2e
The carriage 2 is guided by the rails 2a and reciprocates in the main scanning direction when rotated in the forward and reverse directions.

(Reading Unit) The reading unit 3 moves the carriage 2 in the sub-scanning direction, and the main scanning rail 2a, the pulleys 2b and 2c, and the main scanning motor 2e are attached to the reading unit 3. .. One end of the reading unit 3 in the longitudinal direction is slidably fitted to the sub-scanning rail 14, and a guide roller 3a is attached to the other end of the reading unit 3 so that the roller 3a can roll on the body frame 15. There is. Further, as shown in FIG. 1, a driving pulley 15 and a driven pulley (not shown) are attached near both ends of the sub-scanning rail 14, and a timing belt 16 stretched between both pulleys is connected to the reading unit 3. Has been done. Therefore, when the reading sub-scanning motor 17 connected to the drive pulley 15 rotates forward and backward, the reading unit 3 is guided by the rail 14 and reciprocates in the sub-scanning direction.

The recording device P is arranged below the reading device R. Next, the structure of each part of the recording device P will be described. (Recording Means) The recording means performs a recording operation of recording an ink image on the recording material 11, and the ink jet recording method is used in this embodiment.

The ink jet recording system is provided with a liquid ejection port for ejecting and ejecting a recording ink liquid as flying droplets, a liquid channel communicating with the ejection port, and a part of this liquid channel. Ejection energy generating means for giving ejection energy for causing the ink liquid in the passage to fly. The ejection energy generating means is driven according to the image signal to eject ink droplets to record an image.

As the discharge energy generating means, for example, a method of using pressure energy generating means such as an electromechanical converter such as a piezo element, or electromagnetic energy for irradiating and absorbing electromagnetic waves such as laser into the ink liquid to generate flying droplets is used. There are a method using a generating means, a method using a thermal energy generating means such as an electrothermal converter, and the like. Among them, the method of using the heat energy generating means such as the electrothermal converter is suitable because the ejection ports can be arranged at a high density and the recording head can be made compact.

In the recording means of this embodiment, a recording head 8a and an ink tank 8b are integrally formed, and this recording head 8a uses a heat energy generating means by an electrothermal converter as a discharge energy generating means. The ink causes film boiling when the converter is energized to grow bubbles in the liquid path, and the growth and contraction of the bubbles cause the ink to be ejected from the ejection port for recording.

Incidentally, the recording head 8a has a temperature detecting means for generating stable film boiling, and preheating is performed before recording at a low temperature.

(Recording Carriage) The recording carriage 9 is for reciprocating the recording means 8 in the main scanning direction, which is slidably mounted on the main scanning rail 9a as shown in FIG. The recording means 8 is mounted on the carriage 9. Main scanning rail 9a
A drive pulley 9b and a driven pulley (not shown) are attached near both ends of the recording pulley 9, and a timing belt 9c stretched between the pulleys is connected to the recording carriage 9. Further, a recording carriage motor 9d is connected to the drive pulley 9b. Therefore, when the carriage motor 9d is rotated in the forward and reverse directions, the recording carriage 9 moves to the rail 9
It is guided by a and reciprocates in the main scanning direction.

(Signal Cable) A signal cable 12 for transmitting an image signal serving as a recording work element to the electrothermal converter of the recording means has one end fixed to the carriage 9 and the other end connected to a control unit described later. It is connected to the connector of the main body. This signal cable 12 is also the signal cable 7 of the reader R.
Similarly to the above, the transmission means for transmitting an electric signal is configured, and is configured as a ribbon cable in which a plurality of signal lines are covered with heat resistant vinyl.

(Recording Material Conveying Means) Recording Material Conveying Means 10
Is for conveying the recording material 11. As shown in FIG. 2, a cassette 10a is detachably attached to the lower portion of the apparatus, and a plurality of recording materials 11 are stacked and stored in the cassette 10a. The recording material 11 is separated and fed one by one in the direction of arrow c in FIG. 1 by the pick-up roller 10b and the separation claw 10a1 provided at the tip of the cassette 10a, and is conveyed to the recording head 8a in the recording material conveyance direction. It is configured to be conveyed by a pair of conveying rollers 10c and 10d arranged on the downstream side.

(Control Means) The reading device R and the recording device P are drive-controlled by a signal from a control section. Next, the control system thereof will be described. In FIG. 3, reference numeral 18 is a control unit, which includes a CPU 18a, a ROM 18b, and a RAM 18
It consists of c. The CPU 18a is a central processing unit, which reads programs and various data from a ROM 18b, which will be described later, and read information from the reading device R, performs necessary calculations and determinations, and performs various controls. The ROM 18b is a read-only memory, and stores various programs for operating the CPU 18a (for example, the program shown in the flowchart of FIG. 4), character codes, and various data necessary for dot pattern recording. The RAM 18c is a random access memory, and comprises a text area for storing a working area document for temporarily storing the data instructed by the CPU 18a and a calculation result.

The control section 18 inputs the read information from the reading means 1 and the temperature information from the temperature detecting means 19, and each motor (read main scanning motor 2e, reading sub-scanning motor 17, recording carriage motor 9d, conveyance roller). Motor drivers 21 and 2 that drive the conveyance motor 20) that drives 10c and 10d, etc.
The drive signal is output to 2, 23, and 24, and the drive signal is output to the head driver 25 for driving the recording head 8a.

(Operation Procedure) Next, an operation procedure when the control section 18 performs a copy operation will be described. still,
In the copying operation, the reading carriage 2 is scanned by main scanning to read the information written in the original by the reading means 1, and the reading unit 3 is moved in the sub-scanning direction to read the information for one original, and at the same time, the recording is performed. This is an operation of scanning the carriage 9 and driving the recording head 8a in accordance with the read information to perform predetermined recording on the recording material 11.

The flow chart shown in FIG. 4 is based on the ROM 18b.
This is an operation procedure according to the program stored in (1). When a copy key (not shown) is pressed (S1), the reading carriage 2 and the recording carriage 9 perform an empty scan n times (S2), and then a predetermined copy operation is performed. This is done (S3).

The number of times n of the blank scan may be appropriately set depending on the conditions of each apparatus, the environment of the installation location, etc. so that the cable cured at a low temperature is softened. According to the experiment, the reading carriage 2 of about 180 g has a diameter of 1.5 mm and a width of 22.5.
When a signal cable 7 coated with mm heat-resistant vinyl is connected, scanning the carriage 2 once in an environment of 10 ° C. softens the cable 7 that has hardened at low temperatures, causing the reading carriage 2 to float and unevenly feed. Could be prevented.

In this way, the carriages 2 and 9 are idle-scanned before the copying operation is performed to soften the cables 7 and 12 which are hardened at a low temperature, thereby preventing the carriages 2 and 9 from floating even at a low temperature. Therefore, accurate reading and recording can be performed.

Second Embodiment Next, as a second embodiment, FIG. 5 shows a procedure for detecting the environmental temperature and performing a blank scan of the carriage only when the temperature is low. In this case, when the copy key is pressed (S1), the temperature inside the apparatus is detected by the temperature detecting means 19 (S2). The cables 7 and 12 that have been cured at a low temperature are softened by performing a dry scan (S4), and then a copy operation is performed (S5). On the other hand, if the temperature is t
If the temperature is higher than ° C, it is determined that the cables 7 and 12 are not cured, and the copying operation is performed without causing the carriages 2 and 9 to perform an idle scan. The temperature detecting means
Although the recording head 8a is preheated before the recording operation at a low temperature by the temperature detection by 19, the idle scan is performed at the same time as this preheating.

Here, the temperature t ° C. is a temperature at which the cables 7 and 12 are hardened and floating or uneven feeding occurs on the carriages 2 and 9, and is set appropriately according to the conditions of the apparatus and the installation environment.
Also, the number of times n of idle scans may be appropriately set according to each condition. By doing this, when the installation environment temperature is high, in order to perform the copy operation without performing an empty scan,
Unnecessary actions can be eliminated.

[Third Embodiment] FIG. 6 shows an operation procedure for changing the number of idle scans according to the environmental temperature as a third embodiment. In this case, when the copy key is pressed (S
1) The temperature inside the device is detected by the temperature detecting means 19 (S
2) In step S3, it is determined whether the temperature is t ₁ ° C or lower, and if it is higher than t ₁ ° C, it is determined that the cables 7 and 12 are not cured, and the carriages 2 and 9 are idle-scanned. Without proceeding to step S7, the copy operation is performed.

However, when the detected temperature t _S is t ₁ ° C or lower, the process proceeds to step S4, and it is further determined whether the detected temperature t _S is t ₂ ° C or lower (t ₁ > t ₂ ). When the detected temperature is t ₁ ≧ t _S ≧ t ₂ , the process proceeds to step S6, the carriages 2 and 9 are idle-scanned n ₁ times, and then the copy operation is started. On the other hand, if the detected temperature t _S is t ₂ ° C or lower, the process proceeds to step S5, the carriages 2 and 9 are idled n ₂ times, and then the copy operation is started (n ₁ <
n ₂ ).

As described above, by changing the number of empty scans according to the environmental temperature, the hardened cables 7 and 12 can be surely softened, and the empty scans can be suppressed to the necessary minimum.

[Fourth Embodiment] Next, as a fourth embodiment, FIG. 7 shows an operation procedure in which a blank scan is performed n times only once when the temperature is low after the power is turned on. In this case, when the power is turned on, the temperature detecting means 19 detects the temperature (S1),
When the temperature is t ° C. or lower (S2), when the copy key is pressed (S3), the carriages 2 and 9 are blank-scanned n times (S4), and the cables 7 and 12 cured at low temperature are softened. After that, a copy operation is performed (S5). When copying the second and subsequent sheets (S6), the copy operation is performed without performing the blank scan.

For example, assuming that the reading width by the reading means 1 or the recording width by the recording head 8a is about 10 mm, the carriage scans about 30 when reading or recording the A4 size. As a result, the signal cable is sufficiently softened, and even if the device is in a standby state after that, the temperature inside the device is raised due to heat generation of the power source and the like, so that rehardening of the cable can be prevented. Therefore, when the temperature inside the apparatus rises after the power is turned on, the number of idle scans can be reduced by operating as described above.

[Other Embodiments] In the above-described embodiment, the number n of times the reading carriage 2 and the recording carriage 9 are idle-scanned and the determination temperature for idle scanning are set to be the same. The determination temperature may be set separately for each carriage 2 and 9.

Therefore, in the above-mentioned embodiment, the temperature detecting means of the recording head 8a is used as the means for detecting the temperature inside the apparatus, but this temperature detecting means detects the temperature in the vicinity of the reading means 1 and the recording means. Means for detecting the temperature in the vicinity of 8 may be separately provided.

Further, in the above-described embodiment, the reading carriage 2
Although the example in which both the recording carriage 9 and the recording carriage 9 are idly scanned is shown, it is not always necessary to perform the idling scan of both the carriages 2 and 9, and only one of the carriages may be idly scanned. That is, some cables do not cure even at low temperatures depending on the material of the cable, and in that case, the blank scan need not be performed. Further, even if the cable is hardened, even if the carriage is not lifted or unevenly fed due to the weight of the carriage or the like, it is not necessary to perform the blank scan.

In the above-described embodiment, the recording means 8 is the one in which the recording head 8a and the ink tank 8b are integrated, but the ink tank is fixed at a predetermined position in the apparatus main body. The ink tank and the recording head may be connected by a tube. In this case, in addition to the signal cable 12, a tube constitutes a transmission means, and a tube cured at a low temperature is softened by an empty scan.

In the above-described embodiment, the recording means is energized to the electrothermal converter, and the ink is ejected from the ejection port by the growth of bubbles utilizing the film boiling generated by the application of the thermal energy by the electrothermal converter. However, regarding the typical configuration and principle, for example, US Pat.
It is preferable to use the basic principle disclosed in the specifications of 3129 and 4740796. This method can be applied to both the so-called on-demand type and continuous type, but in the case of the on-demand type in particular, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal to the electrothermal converter, which corresponds to the recorded information and gives a rapid temperature rise exceeding nucleate boiling, thermal energy is generated in the electrothermal converter, and the electrothermal converter is heated. This is effective because film boiling is caused on the heat-acting surface, and as a result, bubbles in the liquid can be formed in a one-to-one correspondence with this drive signal. Due to the growth and contraction of the bubbles, the liquid is ejected through the ejection opening to form at least one droplet. It is more preferable to make this drive signal into a pulse shape because bubbles can be grown and contracted immediately and appropriately, so that particularly excellent liquid ejection can be achieved.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise of the heat acting surface are adopted, more excellent recording can be performed.

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

Further, JP-A-59-123670, which discloses a structure in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy are disclosed. Japanese Patent Application Laid-Open No. Sho-A-Ko
The effect of the present invention is effective even with the configuration based on Japanese Patent Publication No. 59-138461. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

Further, it is preferable to add a recovery means for the recording head, a preliminary auxiliary means, etc., which are provided as a constituent of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specific examples thereof include a capping unit for the recording head, a cleaning unit, a pressurizing or suction unit, an electrothermal conversion type or a heating element other than this, or a preheating unit using a combination thereof,
It is also effective to perform stable recording by performing a preliminary ejection mode in which ejection is performed separately from recording.

Regarding the type or number of recording heads mounted on the carriage, for example, only one is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. And a plurality of them may be provided. That is, for example, the recording mode of the recording apparatus is not limited to a recording mode of only the mainstream color such as black, but may be a combination of a plurality of recording heads integrally formed, but a mixed color of different colors or a mixed color It is also applicable to a device having at least one of the full colors according to

In addition, although the ink is explained as a liquid in the above-mentioned embodiments, it is an ink which is solidified at room temperature or lower and softens or liquefies at room temperature, or in the ink jet recording system. 30 inks
It is common to adjust the temperature within the range of ℃ to 70 ℃ to control the viscosity of the ink so that it is in the stable ejection range. good. In addition, it is possible to prevent the temperature rise due to thermal energy from being positively used as the energy for changing the state of the ink from a solid state to a liquid state, or to use ink that solidifies when left standing for the purpose of preventing ink evaporation. However, in any case, when heat ink is liquefied by application of heat energy according to a recording signal and liquid ink is ejected, or when the ink reaches a recording sheet, it begins to solidify. It is also applicable when using an ink that has the property of being liquefied for the first time by energy.

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

Further, as a form of the above-mentioned ink jet recording apparatus, in addition to the copying apparatus combined with the above-mentioned reading apparatus, one used as an image output terminal of information processing equipment such as a computer, and further a transmission / reception function are provided. It may be in the form of a facsimile machine it has.

Further, although an example in which the ink jet recording system is used as the above-mentioned recording means has been described, the present invention need not be limited to the ink jet recording system, and other thermal transfer recording system and thermal recording system, and further, Can also be applied to a recording method other than the impact recording method such as the wire dot recording method.

Further, the serial device of the present invention does not need to be used in combination with the reading device and the recording device, and may be used only as the serial reading device or only as the serial recording device, or applied to other serial devices. It is also possible. Therefore, the working means need not be limited to the reading work means or the recording work means.

[0057]

As described above, according to the present invention, the carriage is scanned before the work means starts the work. Therefore, for example, a cable cured at a low temperature can be softened. Therefore, it is possible to prevent the carriage from floating and uneven feeding without providing a special weight member for preventing the carriage from floating or providing a heater or the like. Further, by performing the scan before starting the work by detecting the device temperature, unnecessary work can be eliminated and work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a configuration of an image forming apparatus according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional explanatory diagram of an image forming apparatus.

FIG. 3 is a control block diagram.

FIG. 4 is a flowchart showing a copy operation procedure.

FIG. 5 is a flowchart showing an operation procedure of performing an idle scan only under a low temperature.

FIG. 6 is a flowchart showing an operation procedure for changing the number of blank scans depending on the ambient temperature.

FIG. 7 is a flowchart showing an operation procedure of performing a blank scan only before performing the first copy.

FIG. 8 is an explanatory diagram of a serial reading device.

FIG. 9 is an explanatory diagram of a carriage positioning configuration.

FIG. 10 is an explanatory diagram of a case where the cable has a bending tendency.

[Explanation of symbols]

R ... Reading device P ... Recording device 1 ... Reading means 1a ... Light source 1b ... Lens 1c ... Photoelectric conversion element 1d ... Substrate
2 ... Reading carriage 2a ... Main scanning rails 2b, 2c
... pulley 2d ... belt 2e ... reading main scanning motor 3
... reading unit 3a ... guide roller 4 ... document table glass 5 ... document 6
... cover 7 ... signal cable 8 ... recording means 8a ... recording head 8b ... ink tank 9 ... recording carriage
9a ... Main scanning rail 9b ... Pulley 9c ... Belt 9
d ... Carriage motor 10 ... Conveying means 10a ... Cassette
10b ... Pickup roller 10c, 10d ... Conveyor roller
11 ... Recording material 12 ... Signal cable 13 ... Ejection tray
14 ... Sub-scanning rail 15 ... Pulley 16 ... Belt 17 ... Reading sub-scanning motor 18 ... Controller 18a ... CPU 18b ... RO
M 18c ... RAM 19 ... temperature detection means 20 ... transport motor
21-24 ... Motor driver 25 ... Head driver

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B41J 29/00 8804-2C B41J 29/00 G

Claims (9)

[Claims] 1. A carriage movable in the apparatus, a working means mounted on the carriage for performing a predetermined work, one end connected to the carriage and the other end connected to other than the carriage, A serial device comprising: a transmission unit for transmitting a work element to the working unit; and a control unit for controlling the carriage to reciprocate before starting the work by the working unit. 2. A carriage movable in the main body of the apparatus, a working means mounted on the carriage for performing a predetermined work, one end connected to the carriage and the other end connected to a part other than the carriage. , A transmitting means for transmitting a work element to the working means, a temperature detecting means for detecting a temperature inside the apparatus, and before starting work by the working means in response to a signal from the temperature detecting means, A control device for controlling the carriage to reciprocate, the serial device. 3. The serial device according to claim 1, wherein the transmission means is a signal cable for transmitting a signal. 4. The working unit is a reading unit for reading information written on a document.
The described serial device. 5. The serial device according to claim 1, wherein the working unit is a recording unit for recording on a recording material according to a signal. 6. The serial device according to claim 5, wherein the recording unit is an inkjet recording system that performs recording by ejecting ink according to a signal. 7. The serial device according to claim 6, wherein the transmission unit is an ink tube for supplying ink to the recording unit. 8. The serial device according to claim 6, wherein the recording unit includes an electrothermal converter for generating thermal energy for ejecting ink. 9. The serial device according to claim 8, wherein the recording unit ejects the ink from the ejection port by utilizing the film boiling generated in the ink by the thermal energy applied by the electrothermal converter. apparatus.