JP3150172B2 - Reading and printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device, and more particularly to an electronic device such as a facsimile having an image reading section and a print recording section in the same housing.

[0002]

2. Description of the Related Art A facsimile as an electronic device of this kind has a function of transmitting an original such as a character or a figure by converting it into an electric signal by a photoelectric conversion element and a function of printing and recording received image information on paper. And a device having: Transmission and reception of image information is mainly performed using a public line.

As a method of recording a received image on a paper surface, a heat-sensitive method using a special heat-sensitive recording paper has been used in most cases. However, in recent years, demand for plain paper facsimile machines has been increasing in terms of writing properties, imprinting and preservation. Is growing. As a printing method on this kind of plain paper, a laser beam printer system is almost used, but as a compact and inexpensive printing method, for example, US Pat. Nos. 4,723,129 and 474
An inkjet apparatus using the basic principle disclosed in Japanese Patent Application No. 0796 is suitable. Ink jets of this type can be easily multi-nozzle, but the number of nozzles is 50 to 150 in terms of cost and maintainability.
It is desirable to be about. In this case, printing is performed by scanning for the width of the nozzle (shuttle printing). In addition, if the reading section performs the reading by the shuttle type in accordance with the reading, the photoelectric conversion element for reading can be small and the reading cost can be reduced.

[0004]

According to the specifications of the G4 facsimile which will spread in the future, reading and printing may be performed asynchronously and simultaneously. In an apparatus in which a reading unit and a printing unit that perform reciprocating scanning are arranged in one casing as described above, when reading and printing are performed simultaneously, an image may be disturbed. This is because, when reading and printing are performed at the same time, the impact caused by starting, reversing, and stopping during reciprocating scanning mutually interferes with each other's reading and printing scanning, that is, causes vibration.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an electronic device which can reduce disturbance of images even when reading and printing are simultaneously performed in the above-described electronic device. Aim.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a scanning sequence in which reading and printing are simultaneously performed. Is characterized in that the reading or printing control is changed so that the reversal timing does not overlap with the movement scanning in the other reciprocating movement scanning. Further, in the control change, when reading and printing are simultaneously performed, operating conditions such as the activation time and scanning time of the other scanning operation are changed according to the operating state of one scanning.

According to this configuration, reading and printing can be performed in a short time in the case of independent operation, and the control of reciprocating scanning for reading and printing can be changed in the case of simultaneous operation, so that the image of the other scanning system can be obtained. The operation time, such as start, inversion, and stop, which affects the operation, can be shifted from the time during the other scan. According to the present invention, even when reading and printing are performed simultaneously, as in the case of single operation, clear read information and printed images can be obtained with priority given to image quality.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) First, Embodiment 1 of the present invention will be described. FIG. 1 shows a main body device in which a reading unit and a printing unit are integrated. A reading unit is provided on the upper side, and a printing unit is provided on the lower side. The reading of the original is performed by the light receiving element 104 that scans at a predetermined reading width. The light receiving element 104 is mounted on the main scanning carriage 101 and the sub scanning carriage 106, and moves in the X and Y directions. The image is printed on the roll paper 1 supplied from the roll paper cartridge 2.
To the transport rollers 201 and 202 and the discharge rollers 203 and 2
This is performed by scanning the recording head 205 with the printing unit 205 in step S 04.

1 Description of Mechanism 1-1 Roll Paper Cartridge Configuration FIG. 2 is a schematic perspective view of a roll paper 1 having an A4 size width and a roll paper cartridge 2 for accommodating the roll paper 1, and FIGS. FIG. 3 is a side sectional view and a front sectional view of the roll paper cartridge 2 in which the cartridge 1 is stored. 2a is an upper cover of the roll paper cartridge 2, 2b is a paper width guide for regulating the position of the roll paper 1 in the axial direction, 2c is a roll paper rotating shaft 3
Is a U-shaped groove for rotating the roll paper, 2d is a roll paper discharge window for discharging the roll paper to the outside, and 2e is a roll paper discharge roller 4 attached to the main unit for entering when the roll paper is discharged. The roller window, 2f is a lock groove for hooking a lock arm provided in the main body device, 2g is a leaf spring for preventing the slack of the roll paper, 2i is a paper powder receiver for storing paper powder, and 2k is a lock for the upper cover 2a. 2l is a metal piece for locking the upper cover 2a, 3l
Is a roll paper rotation shaft integrated with the roll paper 1, 3a is a rubber power transmission material having a high friction coefficient provided for transmitting power to the roll paper rotation shaft 3 from the outside, 5 and 6 are pinch rollers,
Reference numeral 16 denotes a brake pad that suppresses rotation of the pinch rollers 5 and 6.

The roll paper 1 is inserted into the U-shaped groove 2c with the roll paper rotating shaft 3 while the both ends are along the paper width guide 2b in the roll paper cartridge 2. Then, the leading edge 1 of the roll paper
The upper cover 2a is closed in a state where a is pulled out to the extent that it does not come out of the exterior of the cartridge. At this time, the leaf spring 2g attached to the upper cover sandwiches the roll paper 1 with the pinch roller 5, thereby suppressing the slack of the roll paper. The upper cover 2a is locked by a magnet catcher 2k and a metal piece 21 provided in the roll paper cartridge 2.

1-2 Lock Mechanism FIG. 4B shows a state in which the roll paper cartridge is locked at a predetermined position by a lock mechanism provided inside the main body device.

When the roll paper cartridge 2 is pushed down to the stopper 31 of the main unit, the roll paper cartridge 2 is locked by a lock mechanism provided inside the main unit. The lock mechanism includes a lock arm 24 for locking the roll paper cartridge 2 and a lock arm 24.
25, a plunger 26, a pushing spring 27 for pushing the roll paper cartridge 2 outward when the lock is released, and a lock arm 2
And a lock arm detection sensor 28 that detects the position of the lock arm 4.

When the roll paper cartridge 2 enters the insertion slot, the lock arm 24 is pushed down, and the lock arm detection sensor 28 is turned on. When the roll paper cartridge 2 is further pushed down to the stopper 31, the lock arm 24 enters the lock groove 2f provided on the underside of the cartridge and is pushed up by the spring 25, and the signal of the detection sensor 28 is turned on.
To off. The main controller can know whether or not the roll paper cartridge 2 is set at a predetermined position of the main body device based on the on / off signal of the sensor 28.

When the roll paper cartridge 2 is removed from the main unit, the lock is released by turning on the plunger 26 and lowering the lock arm 24.
It is pushed outward by 7.

When the power supply of the main unit is off, the lock arm 24 is engaged with the lock groove 2f of the roll paper cartridge 2 by the spring 25 and cannot be removed.

1-3 Roll Paper Unloading / Rewinding Mechanism Next, a mechanism of a drive system used for unloading the roll paper and rewinding the roll paper will be described.

FIGS. 5A and 5B are diagrams showing a roll paper discharge / rewind mechanism according to the present embodiment.

The roll paper unloading and rewinding mechanism according to the present embodiment is composed of a single paper feed motor 19 and several types of gear trains.
The roll paper is unloaded by the reverse rotation of the motor. When the roll paper cartridge 2 is pushed into the stopper 31,
Various types of driving systems are connected to the sheet feeding motor 19.

The first drive system is a drive system for rewinding the roll paper. Roll paper cartridge 2 is stopper 31
The power transmission member 3 of the roll paper rotating shaft 3
a (made of rubber) comes into contact with the drive supply material 21a made of resin.
The rotation center of the power transmission member 3a and the rotation center of the drive supply member 21a are configured to coincide with each other. When the drive supply member 21a rotates, the power transmission member 3a pressed against it rotates in conjunction with the rotation. Become. However, the contact pressure during this period is not very strong, and when some force acts in reverse to the unwinding of the roll paper 1 and the load resistance of the power transmission member 3a increases, the rotational force is transmitted by the frictional force during this period. Inability to do so causes slip. The power transmission member 3a made of rubber may be gradually scraped off due to slippage with the drive supply material 21a made of resin, but the power transmission member 3a is a replacement part integrated with the roll paper 1, There is no problem because the amount is considered to be a small amount and the time until the roll paper 1 is replaced is reached. The shaved material is stored in a space 2h provided at a corner of the roll paper cartridge 2.

The driving force for rewinding the roll paper is from the motor gear 20 (number of teeth Z20) press-fitted to the rotating shaft of the sheet feeding motor 19 (pulse motor) from the large gear 21b (number of teeth Z21b) of the one-way bearing 21. ) Is transmitted to the roll paper rotating shaft 3 by friction between the drive supply member 21a and the power transmission member 3a.

A one-way bearing rotates only in one direction,
It does not rotate in the other direction, and its structure is shown in FIG.
The bearing portion includes an outer ring 21b with a large gear, an inner ring 21a with a driving supply material, and four needles 21c. The outer ring 21b is provided with a space 21d in which each needle can move by a fixed distance along the inner ring 21a. The space 21d is gradually narrowed in the counterclockwise direction. In this figure, when the inner ring 21a tries to rotate in the counterclockwise direction, the needle 21c
Is pushed in the direction in which the space 21d becomes narrow, and the needle 2
1c and the inner ring 21a, and the frictional force between the needle 21c and the outer ring 21b increases, and the inner ring 21a and the outer ring 21b rotate integrally. On the other hand, when the inner ring 21a is to be rotated in the clockwise direction, the needle 21c can freely rotate in the wider portion 21e of the space 21d, so that the needle 21c can be rotated only by the inner ring 21a and power is not transmitted to the outer ring 21b. Similarly, when the outer ring 21b attempts to rotate clockwise, the inner ring 21a rotates integrally with the outer ring 21b, and the outer ring 21b rotates.
When trying to rotate in the counterclockwise direction with the group, the outer ring 21b
The power is transmitted only to the inner ring 21a.

When the motor gear 20 is rotated clockwise, the large gear 21b of the one-way bearing 21 rotates counterclockwise. As described above, when the large gear 21b rotates in the counterclockwise direction, the one-way bearing 21 has a structure that transmits the driving force integrally, so that the drive supply member 21a rotates in the counterclockwise direction. Then, the rotational force is transmitted from the drive supply material 21a to the power transmission member 3a at the end of the rotating shaft, and the roll paper is wound up. At this time, the roll paper 1 rotates as n1 = (Z20) / (Z20b) * (n20). Here, n1 is the rotation speed of the roll paper 1 (winding speed), and n20 is the rotation speed of the motor gear 20.
At this time, the paper feed roller 4 is separated from the pinch rollers 5 and 6, the driving force of the paper feed roller 4 is not transmitted to the roll paper 1, and the roll paper 1 is in an open state. Roll paper can be wound up.

The second drive system is a drive system for carrying out the roll paper 1 from the roll paper cartridge 2. The driving force for transporting the roll paper is transmitted from the motor gear 20 to the discharge pulley 15 directly connected to the paper feed roller 4 via the timing belt 22 (FIG. 5B). Unloading pulley 15
Is a pulley for the timing belt having the number of teeth Z15, and a part of the motor gear 20 having the number of teeth Z20 is used for the timing belt.

When the motor gear 20 is rotated counterclockwise, the carry-out pulley 15 rotates counterclockwise. At this time, if the paper feed roller 4 is lowered by the plunger 30 (FIG. 7A) and the roll paper 1 is nipped by the paper feed roller 4 and the pinch rollers 5 and 6, the roll paper 1 is conveyed. Become. Since the rubber hardness of the feed roller 4 is higher than the rubber hardness of the pinch rollers 5 and 6, the outer peripheral shape of the pinch rollers 5 and 6 follows the outer peripheral shape of the feed roller 4. .
Therefore, the roll paper 1 is conveyed along the outer periphery of the paper feed roller 4 which is almost circular as shown in FIG. At this time, the pin rollers 5 and 6 are
Since the rotational force is suppressed by FIG. 2 (FIG. 2), the curl of the roll paper 1 sandwiched between the paper feed roller 4 and the pinch rollers 5 and 6 is removed by friction with each roller. The paper dust generated by the curl removal is accumulated in a paper dust receiver 2i provided below the roll paper cartridge 2. This curling removes the roll paper 1, paper feed roller 4, pinch rollers 5, 6
Is charged. To remove it, use a roll paper car
The cartridge 2 is made of a conductive resin, and a conductive rubber material is used for the sheet feeding roller 4 and the pinch rollers 5 and 6. Further, a static elimination spring is provided at a position in contact with the cartridge inside the main body device, and a static elimination brush is provided on a roll paper conveying path. With this arrangement, when the cartridge is set in the main unit, the static elimination spring contacts the surface of the cartridge, so that the static electricity accumulated on the roll paper and the roller is removed from the cartridge.
The charge is removed through a bridge or the like. When the motor gear 20 rotates at the rotation speed n20, the transport pulley 15
Rotates as n15 = (Z20) / (Z15) * n20.

Since the unloading speed of the roll paper on the paper feed roller 4 is equal to the peripheral speed of the paper feed roller 4, the roll paper is conveyed at a speed of v4 = 2π * (r4) * (n15). Become. Here, r4 is the radius of the paper feed roller 4.

The roll paper is conveyed at a speed v4 by the paper feed roller 4, and the roll rotates accordingly to supply the roll paper. At this time, the roll paper rotating shaft 3 is rotated by n3 = (v4) / (2π * r1). Here, n3 is the number of rotations of the roll paper rotating shaft 3, and r1 is the roll radius of the roll paper 1. Since the drive supply material 21a of the one-way bearing 21 is directly connected to the roll paper rotation shaft 3, it rotates at n21a = n3. Rearranging the above equation gives:

N21a = (r4 / r1) * (Z20 / Z15) * n20 The large gear 21b of the one-way bearing 21 is rotated by the rotation of the motor gear 20, so that n21b = (Z20) / (Z21b) * (n20). Rotate.

That is, when the paper feed motor 19 is rotated in a counterclockwise direction to attempt to carry out the roll paper 1, the drive supply material 21 a of the one-way bearing 21 receives a rotating force by carrying out the roll paper 1. The large gear 21 b of the one-way bearing 21 receives the rotational force directly from the motor gear 20. Even in such a case, in order to prevent the burden on the one-way bearing 21, it is only necessary to satisfy the following condition: n21b> n21a. That is, the large gear 21b only needs to rotate faster than the small gear 21a. In this embodiment, the number of teeth of each gear and the radius of the paper feed roller are set as Z20 = 20, Z21b = Z15 = 50, and r4 = 8. That is, the core diameter r1 of the roll paper may be set to 8 mm or more. In this embodiment, since the core diameter is set to 20 mm, no load is applied to the one-way bearing 21.

As described above, when the paper feed motor 19 is rotated clockwise, the paper feed roller 4 is lifted upward to open the roll paper, whereby the roll paper can be rewound. When the paper feed roller 4 is lowered and the roll paper 1 is held between the pinch rollers 5 and 6 and the paper feed motor 19 is rotated counterclockwise, the roll paper 1 can be unloaded from the roll paper cartridge 2. .

In this embodiment, one motor rotates forward and reverse to rotate the motor.
Although the paper is unloaded and rewound, separate motors may be used for each.

Up to this point, the roll paper unloading / rewinding mechanism has been described for the A4 size roll paper 1 and its dedicated cartridge 2. In this embodiment, in addition to the A4 size roll paper cartridge 2, B5, B4, and A3 size roll paper cartridges can be used.

A size detection sensor for detecting the size of the inserted roll paper cartridge is provided inside the main unit, so that the controller can immediately recognize the size when the roll paper cartridge is inserted. I have. This is because a size member for size detection is provided outside the roll paper cartridge according to each roll paper size.

1-4 Configuration of Reading (Reader) Section FIG. 8 is a sectional view of the reading section, FIG. 9 is a plan view of the reading section, and FIG. 10 is a perspective view of the sub-scanning carriage.

In the respective drawings, parts having the same functions are denoted by the same reference numerals. In FIG. 8, the reading unit 108
A document glass 115 on which a document (not shown) is placed, and a pressure plate 116 for pressing the document placed on the glass 115 are provided at the upper part. Then, the original placed on the original glass 115 is irradiated by a lamp 102 mounted on a main scanning carriage 101, and the reflected light is transmitted through a lens 103 to a light receiving element 104 such as a CCD.
, The image is converted into an electric signal by the light receiving element 104 and the original is read.

FIG. 11 shows a normal control state of the main scanning motor in the reading section and the printing section of the present apparatus. The main scanning motor is a pulse motor, and has a function of rotating by a certain angle in proportion to a given number of pulses. reading,
The carriage moves at a constant speed in the printing process,
In the present embodiment, 2000 pps (pulse pe
r second). Also, in the return operation after the completion of reading and printing, the operation returns to the home position at a speed of 4000 pps to shorten the operation time.

The main scanning carriage 101 is provided with a main scanning rail 117 arranged along the Y direction which is the main scanning direction.
Is fitted. The main scanning carriage 101 has
A main scanning belt 118 for transmitting the driving force of the main scanning motor 105 is fixed by an engaging member (not shown), and the carriage 101 is rotated by rotation of the main scanning motor 105.
Is transported from the position A to the position D in the arrow Y direction which is the main scanning direction. When the main scanning carriage 101 moves forward, the original image corresponding to the reading width E1 of the light receiving element 104 is moved from the position B to the position C (FIG. 1).
Up to 1), reading is continuously performed in a belt-like form.

The position A is the main scanning carriage 101
Is a home position HPY in the Y direction, and is a position where the light-shielding plate 125 provided below the main scanning carriage 101 shields the main-scanning home position sensor 126 when the main scanning carriage 101 moves backward. The position B is a reading start position of the document image. As shown in FIG. 11, the main scanning carriage 101 is accelerated by the main scanning motor 105 from the position A at a predetermined acceleration, so that the main scanning carriage 101 moves at a constant speed. The C position is a reading end position. The position D is a position where the main scanning carriage 101 stops at a predetermined deceleration speed from the reading end position C and stops. The C position and the D position change depending on the document size. The main scanning motor 105 is a pulse motor having a step angle of 1.8 degrees, the reduction ratio of the driving system is 1, and the diameter of the pulley 131 fixed to the rotating shaft of the main scanning motor 105 is 10.5 mm. When one pulse is input to 105, the main scanning carriage 101 moves by 0.165 mm.

Based on the above values, to move the main scanning carriage 101 as shown in FIG.
Go to 05 A position → B position Slow up 30mm ... 182 pulse B position → C position A4 size 210mm ... 1273 pulses A3 size 297mm ... 1801 pulse C position → D position Slow down 30mm ... 182 pulses Input clock I just need.

The main scanning carriage 101, the main scanning motor 105 and the like are mounted on a sub scanning carriage 106. A cylindrical bearing 119 is fixed to one side of the sub-scanning carriage 106. In addition, the reading unit 108 is provided with a cylindrical sub-scanning rail 120 disposed along the sub-scanning direction. When the bearing 119 is fitted to the sub-scanning rail 120, the sub-scanning rail 1
The sub-scanning carriage 106 can be moved in the sub-scanning direction by using the guide 20 as a guide.

A sub-scanning belt 114 for transmitting a driving force of a sub-scanning motor 109 is provided on an opposite side (hereinafter referred to as a driving side) of the sub-scanning carriage 106 to the sub-scanning rail 120. Has been fixed by. Accordingly, the sub-scanning carriage 106 is configured to be able to reciprocate in the X direction, which is the sub-scanning direction, as the sub-scanning motor 109 rotates.

A shaft 122 is fixed to a side opposite to the driving side of the sub-scanning carriage 106 (hereinafter referred to as a driven side), and a supporting roller 123 is rotatably mounted on the shaft 122. The support roller 123 is configured to be able to move on a roller rail 124 provided on the reading unit 108. That is, when a driving force is transmitted from the sub-scanning motor 109 to the sub-scanning carriage 106, the sub-scanning carriage 106 moves in the sub-scanning direction, and the support rollers 123 move on the roller rails 124 while rotating. is there.

In the reading unit configured as described above,
When the sub-scanning motor 109 performs a certain amount of rotation to move the sub-scanning carriage 106 corresponding to the reading width E1 of the light receiving element 104 mounted on the main scanning carriage 101, the rotation is performed via the sub-scanning belt 114. And transmitted to the sub-scanning carriage 106. Then, the sub-scanning carriage 106 moves in a sub-scanning direction (X direction) corresponding to the reading width E1, and stops. The carriage 106 can move stepwise from the U1 position to the U2 position in the arrow X direction, which is the sub-scanning direction, by the reading width E. The U1 position is a reading start position in the sub-scanning direction, and is the home position HPX of the sub-scanning carriage 106 in the X direction. When the sub-scanning carriage 106 moves backward, the light shielding plate 127 provided below the sub-scanning carriage 106 This is a position where the sub-scanning home position sensor 128 is shielded from light. The U2 position is a reading end position and varies depending on the document size.

The sub-scanning motor 109 has a step angle of 3.
75 degree stepping motor, 10
The diameter of the pulley 113 fixed to the rotating shaft of No. 9 is 26 mm
Therefore, when one pulse is input to the motor, the sub-scanning carriage 106 moves by 0.85 mm, and when 10 pulses are input, the sub-scanning carriage 106 moves by the same distance as the reading width E1 (8.5 mm).

The sub-scanning carriage 106 is moved to the reading width E.
In the case of step-feeding by 1, in order to cover the entire area of the document, the number of times N of step-feeding by the carriage 106 is A4 (297 mm), N = 35, A3 (420 mm), N = 50 Become.

1-5 Configuration of Printing (Printer) Unit The configuration of the printing unit will be described with reference to FIG.

The present apparatus is configured to convey a recording sheet by a conveying roller and record a predetermined image by a print head.

The transport means 200 includes a transport roller pair 201,
202, and a pair of paper discharge rollers 203 and 204. The transport roller 2 is driven by a printer sub-scanning motor 230.
01 and the discharge roller 203 rotate to convey the recording paper in the direction of arrow S.

Note that the discharge rollers 203 and 204 are recording paper (to be referred to as roll paper in the present embodiment. 1) is configured to give an appropriate tension to 1. The configuration of the recording means is such that an ink jet type recording head 205 and a platen 206 are arranged to face each other.
It is installed in. The printer carriage 207 includes:
A main scanning axis 2 arranged along the T direction which is the main scanning direction
08 is slidably fitted. Further, a printer main scanning belt 210 for transmitting the driving force of the printer main scanning motor 209 is fixed to the printer carriage 207 by an engaging member (not shown), and the rotation of the printer main scanning motor 209 causes the printer carriage 207 to rotate. Is transported from the position a to the position d in FIG. 11 in the direction of arrow T which is the main scanning direction. When the printer carriage 207 moves forward, the recording head 2
The original image corresponding to the print width E2 of No. 05 is continuously printed in a band shape from the position b to the position c.

The position a is defined as the printer carriage 20.
7 is the home position HPT in the T direction, and when the printer carriage 207 moves back,
7 is a position where the light blocking plate 211 provided at the lower part of the printer 7 shields the printer main scanning home position sensor 212 from light. The position b is a printing start position, and as shown in FIG. 11, the printer carriage 207 is accelerated by the printer main scanning motor 209 from the position a at a predetermined acceleration, and moves at a constant speed. The position c is a print end position. The d position is
This is a position where the printer carriage 207 stops at a predetermined deceleration from the print end position c and decelerates. The c position and the d position change depending on the paper size. The printer main scanning motor 209 is a stepping motor having a step angle of 1.8 degrees, the reduction ratio of the driving system is 1, and the diameter of the pulley 213 fixed to the rotating shaft of the printer main scanning motor 209 is 10.5 mm. When one pulse is input to the main scanning motor 209, the printer carriage 207 moves to 0.
Move 165 mm.

From the above values, the printer carriage 207
11 is moved to the printer main scanning motor 209 by a position → b position Slow up 30 mm ... 182 pulses b position → c position A4 size 210 mm ... 1273 pulses A3 size 297 mm ... 1801 pulses c position → d position Slow down 30 mm ... 182 pulses may be input.

The sheet holding means 220 comprises a plate-shaped holding portion 221 and arm portions 222 formed at both ends thereof. The arm portion 222 is provided on the rotating shaft 22 of the transport roller.
3 is rotatably mounted. In the ink jet recording method such as this example, the distance between the recording head forming surface of the recording head and the recording surface of the recording paper is relatively small, and the distance is set to avoid contact between the recording paper and the recording opening forming surface. Must be strictly controlled.
Is effective. The holding portion 221 is made of 0.3 mm stainless steel and has a window in the printing area. A tension spring 224 is attached to the arm portion 222, and urges the holding portion 221 to be separated from the roll paper 1. A gentle slope portion 225 is provided at an end of the holding portion 221 (the home position side of the printer carriage 207), and a rotatable roller 226 is provided below the printer carriage 207. With such a configuration, the printer carriage 20
7, the sheet pressing member 220 is lowered.
Abut and separate from the paper 1. That is, the printer carriage 2
When 07 is in the home position, the spring 22
When the printer carriage 207 moves in the direction of arrow T during recording, the roller 226 rides on the gentle slope 225, and the sheet pressing member 220 moves in the direction of arrow V. , And moves while pressing the pressing portion 221 against the roll paper 1 by the weight of the printer carriage 207. And the printer carriage 207
Is returned to the home position, and the roller 226 is gently sloped.
5, the pressing portion 221 is separated from the roll paper 1 again.

The printer sub-scanning motor 230 is a stepping motor having a step angle of 3.75 degrees, and the pulley 231 fixed to the rotating shaft of the motor 230 has a diameter of 26 mm. 1 moves by 0.85 mm, and when 10 pulses are input, it moves by the same distance as the print width E2 (8.5 mm). When the roll paper 1 is step-fed with the print width E2, to cover the entire area of the document, the number N of step feeds of the roll paper is A4 (297 mm), N = 35 times A3 (420 mm) , N = 50 times.

The configuration of the printing unit has been described above.

2 Reading Sequence FIG. 13 is a block diagram of the reading unit, FIG. 14 is a flowchart of the reading unit, and FIG. 15 is a time chart at the time of reading.

The operation of each of the carriages 101 and 106 and the flow of image signals when reading the original image placed on the original glass will be described with reference to the drawings for each step (S1 to S8).
This will be described in detail. The size of the document to be read in this description is A4 size.

First, in S1, the main controller 129
Original size sent from (A4 size in this example)
Is recognized by the reader controller 130.

Next, in S2, the leader controller 130
Is the control condition of the reader main scanning motor 105 corresponding to the document size, and the clock frequency F (F1 = 500 pps, F1
2 = 2000 pps, F3 = 4000 pps), the number of input pulses P (P1 = 182 pulses, P2 = 1273 pulses, P3 = 182 pulses), and the sub-scanning carriage 106
Is extracted from the table and stored in the memory in the controller 130.

In the next S3, the main controller 129
Read start command RS to start reading
When the main scanning motor 105 and the sub-scanning motor 109 are driven, the main scanning motor 105 and the sub-scanning motor 109 are driven to position the main scanning carriage 101 and the sub-scanning carriage 106 at their home positions HPY and HPX.

When the main scanning carriage 101 and the sub-scanning carriage 106 are located at their respective home positions and the preparation for reading is completed, the next step S4 is executed. Next, the reader controller 130 applies a voltage to the lamp 102 to light it. Then, as shown in FIG.
5, gradually accelerated from 500 pps (A position), and 200 with 182 pulses corresponding to the approach distance of 30 mm
The controller 130 controls so as to be 0 pps (B position). When the point B is reached, the read permission signal becomes Hig
h, and the capture of image data starts. And 2
From the position B to the position C at a moving speed of 2,000 pps (12
The reflected light of the original is read by the light receiving element 104 while being moved by 73 pulses, and the obtained band shape (8.5 mm × 210 m) is obtained.
The image information m) is sent to the main controller 129 and stored in the image memory in the controller 129. C
When the point is reached, the controller 130 controls the main scanning motor 105 so that the reading permission signal becomes low, the capture of image data is prohibited, and the speed gradually decreases from 2000 pps to 500 pps (D position) with 182 pulses. I do. The read permission signal is sent to the reader controller 13 according to the size of the document to be read at the timing described above.
0 switches between High and Low. The return of the main scanning carriage 101 to the home position HPY is returned in the same sequence as in the above-described reading, but the constant speed is increased (4000 pps) to shorten the return time. That is, the carriage 101 gradually accelerates from position D to position C from 500 pps to 4000 pps,
It moves at a constant speed of 4000 pps from the position to the position B, and gradually decelerates from the position B to the position A from 4000 pps to 500 pps. At this time, the main scanning carriage 101 can return to the home position HPY by inputting the same number of pulses to the motor as the total number of pulses (1637 pulses) input at the time of reading. Thus, the reading operation for one shuttle has been completed, and the next S5 is started.

In step S5, N = N-1 is calculated for the number N of step movements in the memory of the reader controller 130, and N (N = 34) is stored again in the same memory. Next, in step S6, the remaining number of step movements N is checked. If N = 0, the process proceeds to S7.

In S7, the sub-scanning carriage 106 is moved. The controller 130 controls the sub-scanning motor 109
, A pulse frequency of 500 pps and a pulse number of 10 are input. Then, the sub-scanning carriage 106 moves by the same distance as the reading width E1 (8.5 mm). This movement is performed when the main scanning carriage 101 moves to the home position HPY.
Executed while returning to.

The routine of S4 to S7 described above is repeated until N becomes 0 in S6, and the read permission signal is set to Hi.
At gh, the captured image data is sequentially stored in the image memory.

At S8, the sub-scan carriage 106 is returned. The controller 130 is the sub-scanning motor 10
9 is input so that the rotation direction of the motor is reversed at a pulse frequency of 500. Then, the sub-scanning carriage 106
Moves in the direction opposite to the reading direction, and is stopped at the home position HPX.

By executing the above-described routines S1 to S8, reading of the entire area (A4 size) of the original document specified by the main controller 129 can be realized first, and the read image is read into the image memory in the main controller 129. This means that all image data has been stored. Then, the controller 129 sends a read end command RE to the reader controller 130 of the reading section, and the operation ends.

3 Set Sequence of Cartridge When the roll paper cartridge 2 loaded with the roll paper 1 (A4 size) is pushed from the cartridge insertion slot of the main unit to the stopper, the roll paper cartridge 2 is locked. At this time, the output signal of the lock arm detection sensor 28 turns off. Further, the controller 250 knows that the A4-size roll paper 1 has been set from the cartridge insertion slot based on the signal of the cartridge size detection sensor and the signal of the lock arm detection sensor attached to each. That is, when the roll paper cartridge is set in the main unit, the controller can grasp the inserted state of the cartridge and the roll paper size in the cartridge.

Also, when the power supply of the main unit is turned on from the off state, the controller checks the insertion state of the cartridge and the size of the roll paper in the cartridge by the signals of the size detection sensor and the lock arm detection sensor. .

When the roll paper cartridge 2 is set in the insertion slot of the main unit, the controller operates the spring 29.
The paper feed roller 4 lifted in FIG. 7A is moved downward by the plunger 30, and the roll paper 1 is held between the paper feed roller pairs 4, 5, and 6. In this state, the paper feed motor 19 is rotated counterclockwise to feed the roll paper 1 from the cartridge 2 into the transport path. The roll paper 1 is conveyed while the skew is corrected by the paper width guide 2b in the cartridge 2. When the paper feed sensor 13 detects the leading edge of the paper, the controller drives the transport motor to drive the transport roller pair 2.
01 and 202 are rotated. The roll paper 1 is nipped by the nip of the pair of conveying rollers 201 and 202 and further conveyed. The conveying speed of the pair of conveying rollers 201 and 202 is faster than the speed of the pair of feeding rollers 4, 5, and 6, and the nip pressure is also lower. Since it is sufficiently large, it is sent to the printing unit at the transport speed of the transport roller 201.

When the registration sensor 240 disposed downstream of the transport roller 201 detects the leading edge of the paper, the controller drives and stops the transport motor until the leading edge reaches the point W (see FIG. 1) of the printing section. The stop position is such that the leading edge of the paper is 2 mm ahead (W) of the print area, and the position is controlled by the number of pulses given to the motor.

4. Print Sequence Next, the present invention will be described based on a usage example of a printer with reference to FIGS. 11, 13, 17, and 18. FIG.

The main controller 129 sends a print command after confirming that the printer is ready for printing. When the command is sent, the printer controller 250 checks with the registration sensor 240 that the roll paper is at the printing position. Next, the printer main scanning motor 209 is supplied with 500 pps.
The printer controller 250 controls the printer controller 250 to gradually accelerate from (a position) and reach 2000 pps (b position) with 182 pulses corresponding to the approach distance of 30 mm. The printer controller 250 sends a video request signal (hereinafter abbreviated as VR signal) to the main controller 1 at a timing calculated from the print start position (b), the current position of the carriage, and the driving frequency of the printer main scanning motor 209.
Send to 29. After receiving the VR signal, the main controller 129 sends print information for one print width (E2) from the image memory in the controller 129 at a predetermined timing, and waits for the next VR signal. The printer controller 250 gives a print drive signal to the recording head 205 based on this print information while moving from the position b to the position c (1273 pulses) at a moving speed of 2000 pps, and the roll paper 1 An image is formed thereon. The time between the VR signal and the reception of the print information is calculated so that the print timing exactly matches the leftmost print start position on the paper.

When the recording head 205 finishes scanning the print area (position c), the speed gradually decreases from 2000 pps to 1
The printer controller 250 operates the printer main scanning motor 2 so that the pulse width becomes 500 pps (d position) with 82 pulses.
09 is controlled. The return of the printer carriage 207 to the home position HPT is returned in the same sequence as in the above-described printing, but the constant speed is increased (40).
00 pps) to shorten the return time. That is, the carriage 207 moves from position d to position c at 500 pps.
It gradually accelerates to 4000 pps, moves at a constant speed of 4000 pps from position c to position b, and moves from position b to position a 4
The speed is gradually reduced from 000 pps to 500 pps.
At this time, the printer carriage 207 can return to the home position HPT by inputting the same number of pulses as the total number of pulses (1637 pulses) input at the time of reading to the motor.

When returning to the home position, the transport rollers 2
01 is driven again by the print width (E2) of the recording head, the VR signal is transmitted and received in the same manner as described above, and the next print scan is continued. The discharge roller pair 203 and 204 are the transport roller pair 20.
Printer sub-scanning motor 2, which is the driving motor for the printers 1 and 202
30 and 2% faster than the conveying roller 201, and the rotational force is transmitted by the slip clutch as described above. The feed amount (speed) of the roll paper is determined by the transport roller pairs 201 and 202, and the roll paper is always in a taut state.

The printing range on the roll paper is 2 mm around the standard paper size in consideration of the expansion and contraction due to the humidity of the paper, the shift and skew caused by paper feeding and conveyance.
(FIG. 17). Main controller 1
Reference numeral 29 denotes the printer controller 2 which transmits print information of a predetermined size and notifies that the transmission of information of one page has been completed.
Notify 50 side. As shown in FIG. 17, the controller 250 sets the trailing edge of the recorded page to 2 mm in front of the printing width.
(W), and waits for printing of the next page. When the next printing is performed in this state, a gap of 4 mm is secured between the pages. Then, the middle of the gap is stopped at the position of the cutter 260 while the roll paper is being conveyed during the printing of the second sheet, and the cutting motor 261 is driven to cut the roll paper 1. In order to efficiently perform this cutting sequence, the interval between the cutter 260 and the nozzle on the cutter side of the recording head 205 is set to an integer (n) times the print width (E2) +2 mm. That is, the sequence is such that the cutting is performed after the n-th paper feed of the next page is stopped.

The cut roll paper 1 (although cut to a predetermined size) falls onto a tray 262 disposed below the cutter 260, and the paper on which the image information is sequentially recorded is thereafter moved. The paper is discharged and piled up. The cutter is a rotary cutter, which is a blade 2 fixed to the main body.
This is a mechanism for cutting the paper between the blade 63 and the blades 264 that rotate around the rotation axes at both ends by a cutting motor (not shown).

According to the above-described sequence, the last page is not discharged, but a cutting command can be generated as necessary to cut and discharge. That is, triggered by a command from the main controller 129, an input from the paper ejection switch 265 provided in the apparatus main body, and the like,
The controller conveys the trailing edge of the page to the cutter position and cuts the roll paper. Thereafter, the sheet feeding motor and the conveying motor are reversed, and the sheet is rewound until the registration sensor 240 is turned off. The leading end is stopped 2 mm ahead of the printing unit again.
The controller can control to stand by in the same state as at the time of the cartridge setting.

5. Scanning Sequence During Reader Operation In FIG. 1 showing a main unit in which a reader unit and a printer unit are integrated, a command to print an image from the outside is received when the reader is reading a document. The scanning sequence in the case of the above will be described.

(1) When the Size of the Read Document and the Size of the Print Document are the Same A scan sequence in the case where the size of the read document and the size of the print document are the same will be described with reference to FIG.

When a print command for the same A4 size document is received while reading the A4 size document, the printer controller 250 delays the activation time of the printer main scanning motor 209 until the activation time t1 of the reader main scanning motor 105,
The scanning of the reader / printer is started at the same time. When the original size for reading and printing is the same, the driving conditions of the main scanning motor do not change, so that scanning for reading and printing is performed simultaneously at t2.
, And the return operation of each carriage also ends at t3.

Thereafter, the start, stop, and inversion of each scan are performed at the same timing until one of the operations is completed.

(2) When the Size of the Read Document and the Size of the Print Document are Different The scanning sequence in the case where the size of the read document and the size of the print document are different will be described with reference to FIGS. 20 and 21.

When an A4 size print command is received while reading an A3 size document, the printer controller 250
Delays the activation timing of the printer main scanning motor 209 until the activation timing t4 of the reader main scanning motor 105, and simultaneously starts scanning of the reader / printer (FIG. 20).

Since the size of the original to be printed is smaller than the original to be read, printing ends the main scanning first. After the printing is finished, the printer main scanning motor 209 is operated to the A3 size as indicated by the broken line without stopping. , The main scanning motor 209 and the reader main scanning motor 105 are simultaneously stopped at t5. In addition, the returning operation of each carriage after the reading / printing is completed also starts at the same time, and ends at t6.

Thereafter, the reading operation of the reader unit and the printing operation of the printer unit are started and stopped simultaneously.

When the reading operation of the reader section is completed before the printing operation, the reader controller 130 sends a reading end command to the printer controller 250. Then, the controller 250 determines that reading by the reader has been completed, and
The scanning sequence 09 is returned to the normal state. That is, the scanning time of the motor 209 is A4 size.

The case where the size of the original to be read is larger than the size of the original to be printed has been described above.
That is, the same operation can be performed when the size of the original to be read is smaller than the size of the original to be printed.

When an A3 size print command is received while an A4 size document is being read, the printer controller 250 delays the activation time of the printer main scanning motor 209 until the activation time t7 of the reader main scanning motor 105, and scans the reader and printer. At the same time (FIG. 21). Since the size of the document to be read is smaller than the size of the document to be printed, the scanning for reading is terminated first. Stop at the same time. In this broken line portion, since the reading permission signal is Low and the capture of the image data is prohibited, the document is not read. Further, the returning operation of each carriage after the end of each operation is started at the same time, and is stopped at the same time at t9.

Thereafter, the reading operation of the reader unit and the printing operation of the printer unit are started simultaneously and stopped at the same time. During this time, the image data of the A4 document is sequentially stored in the image memory even though the reader main scanning motor 105 has moved by A3.

When the printing operation of the printer unit is completed before the reading operation, the print controller 250
Sends a print end command to the reader controller 130. Then, the controller 130 determines that the printing is completed, and returns the scanning sequence of the reader main scanning motor 105 to the original. That is, the scanning time of the motor 105 is A4 size.

By changing the scanning sequence as described above, the starting and stopping of the reading operation and the printing operation and the returning operation to the home position are performed at the same time. Therefore, the starting, stopping, and reversing of each carriage for reading and printing are performed. Disturbance of read and print images due to vibration can be eliminated. In addition, when one of the scans is completed, the other scan is returned to the original scan sequence, so that the scan time is reduced.

6. Each scanning sequence during printer operation In FIG. 1, when the printer is printing an image,
A scanning sequence when a document reading command is input from the outside will be described.

In this case, the reader unit and the printer unit described in "5. Each scanning sequence during reader operation" are replaced. That is, when the printer receives a read command during printing, the reader controller 130 delays the activation time of the reader main scanning motor 105 until the activation time of the printer main scanning motor 209, and starts reading and main scanning at the same time.

Next, by making the shorter scanning time of the scanning sequence coincide with the longer scanning time, the printer main scanning motor 20
9 and the reader main scanning motor 105 are stopped at the same time. Thereafter, the reading operation of the reader unit and the printing operation of the printer unit start simultaneously and stop simultaneously. Then, if one of the scans is completed and the one that continues the scan has changed the scan sequence (scan time) earlier, the scan sequence is restored.

By doing so, the reading operation and the printing operation are started and stopped at the same time, so that the mutual interference between the read image and the printed image due to the influence of the vibration at the time of starting and stopping can be prevented. In addition, by returning the changed scan sequence to the original after one scan is completed, the scan time can be reduced.

7. Each scanning sequence in other cases The scanning speed for reading and printing is the same, and the maximum size for reading and printing is the same as described in the previous section.

Here, a case where the maximum size of reading and printing or the scanning speed is different will be described with reference to FIGS. In such a case, the start timing of reading and printing can be matched, but the scanning time may not be coincident.

(1) When the maximum size is different For example, assuming a device in which the maximum reading size of the reader unit is A3 and the maximum printing size of the printer unit is A4, while the reader unit is reading an A3 original, When the printer receives an instruction to print an A4 size image, the printer controller 250 delays the activation timing of the printer main scanning motor 209 until the activation timing t10 of the reader main scanning motor 105. (FIG. 22).

Next, by making the shorter scanning time of the scanning sequence coincide with the longer scanning time, the printer main scanning motor 20
9 and the reader main scanning motor 105 should stop at the same time. In this case, the maximum print size of the printer unit is A4.
Therefore, this operation cannot be extended to A3, and A4
Will remain.

Therefore, the reading operation of the reader unit and the printing operation of the printer unit are started at the same time until one of the scans is completed, but the stop is not consistent. The printer unit continues to stop at that time until one reading scan of the reader unit ends at t11. Regarding the return to the home position, by lowering the frequency of the input pulse to the printer main scanning motor 209 so that the time required for the return of the printer unit becomes the same as the return time of the reader unit, the start and stop of the return can be performed. Executed at the same time. This means that the time required for reciprocation of the printer unit (for A4) is the same as that of the reader unit (for A3).

When the reading scan of the reader unit is completed before the printing scan, the print scanning sequence of the printer unit is returned to that for A4.

By the change of the scanning sequence described above, the reading and the printing are activated and the return to the home position is activated at the same time, so that the shock due to the vibration at the time of the activation can be avoided. The printer stops first, but only stops and does not reverse, so the impact on the other scan is small.

(2) When the Scanning Speed is Different The operation is performed when the reading size of the reader unit and the printing size of the printer unit are A3 (the maximum size is both A3) and the scanning speed of the reader unit is twice the scanning speed of the printer unit. In this case, even if the readers are activated at the same time, the reader stops first (t11). This is because the reader carriage has reached the maximum size A3 even if the reader is to be operated until the printer stops. In such a case, as described in “(1) When the maximum sizes are different”,
When the reading scan is completed, it stops at that time (t11),
After the print scan is completed, the return operation is started.
The return speed of the reader unit at that time is returned at the slower return speed of the printer unit (FIG. 23). Thereafter, when printing is completed before reading, the reading scanning sequence is restored.
That is, the stop after the reading scan is eliminated, and the return speed is returned to the original high speed.

By changing the scanning sequence as described above, the reading and the start of the printing scan and the start of the return to the home position are simultaneously performed, so that the disturbance of the read image or the print image due to the vibration at the time of the start can be avoided. In addition, although the leader stops first, it does not turn over just by stopping,
The impact is small.

When the reading by the reader section is completed, the scanning time is shortened by immediately returning the scanning sequence of the printer to that before the change.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described. In the second embodiment, when one of the scanning systems is operating, the other operation is stopped, and after both scanning for reading and printing are completed, the returning operation is performed simultaneously.

Since the apparatus used in this embodiment is the same as that of the first embodiment, the description of the mechanism will be omitted.

In FIG. 1, which shows a main unit in which a reader unit and a printer unit are integrated, scanning of each carriage when an image print command is input from outside while the reader is reading a document. The sequence will be described. The reading and printing size here is A4.

When the reader receives a print command while reading a document, the printer controller 250 delays the activation timing of the printer main scanning motor 209 until the reader main scanning motor 105 stops timing t13 as shown in FIG. That is, the reader controller 130 stops the reader main scanning motor 105 on the spot after reading of one shuttle is completed, and sends a one shuttle reading end command to the printer controller 250. Then, the controller 250 operates the printer main scanning motor 209 to start printing.

When the printing for one shuttle is completed,
The printer controller 250 is the reader controller 13
For 0, a 1 shuttle print end command is sent. Then, each controller 130, 250
5, 209 are simultaneously returned to the home position along a predetermined return sequence. This means that the reading and printing processes for one shuttle have been completed.

The above sequence, that is, the printing operation is stopped during reading, the reading operation is stopped during printing, and the sequence of returning to the home position is executed simultaneously. Alternatively, the process is continued until one of the printing operations of the printer unit is completed.
For example, when the reading operation of the reader unit ends before the printing operation, the reader controller 130 sends a reading end command to the printer controller 250. Then, the controller 250 determines that the reading by the reader is completed, and returns the scanning sequence of the printer main scanning motor 209 to the original. That is, the stop after returning to the home position is deleted, and the printing operation is started immediately.

Similarly, when the printing operation is completed first, the scanning sequence of the reader main scanning motor 105 returns to the original, and the stop after the reading is completed is deleted. By changing the scanning sequence described above, the printer unit starts and stops during reading scanning, and the reader unit starts and stops during printing scanning.
Since there is no stop, there is no disturbance of the read image or the print image due to vibration. Further, when the reading by the reader section is completed, the scanning sequence of the printer is immediately returned to the one before the change, thereby shortening the scanning time.

In this embodiment, the scanning sequence of each carriage when an image print command is input from the outside while the reader is reading a document has been described. However, the read command is input when the printer is printing. Even in such a case, the same can be considered.

In this embodiment, after the reading for one shuttle is completed and the reader main scanning motor 105 is completely stopped,
Although the sequence is such that the printer main scanning motor 209 is activated, in fact, the activation timing of one main scanning motor for reading or printing does not fall within the range of the other scanning. (2) One for reading or printing The activation timing of each main scanning motor can be advanced until the stop timing of the main scanning motor does not fall within the range of the other scanning. An example will be described with reference to FIG. In the example shown in the figure, since the time required for slow-up and slow-down of each motor is set to be the same, the start-up time of the printer main scanning motor can coincide with the slowdown start point of the reader main scanning motor. And the scanning time is reduced.

In this example, the case where the print command is input during the reading operation of the reader has been described. However, even when the print command is input during the motor slow-up, slow-down, or when returning to the home position, Think similarly. That is, printing may be started after reading for one shuttle has been completed. Or,
Instead of starting printing when the reader finishes reading, a sequence may be used in which printing by the printer unit is performed first and then reading is performed (FIG. 26).

(Embodiment 3) Next, Embodiment 3 of the present invention will be described. In the third embodiment, when reading and printing are performed simultaneously, the sequence of both scans is changed so that the reading unit performs the return operation of the printing unit during scanning and the reading unit performs scanning of the printing unit during the return operation. Is what you do.

Since the apparatus used in this embodiment is the same as that of the first embodiment, its mechanism is omitted.

FIG. 1 shows a main unit in which a reader unit and a printer unit are integrally incorporated. In FIG. 1, when an image print command is input from the outside while the reader is reading an original, each carriage is moved. The scanning sequence will be described.
The reading and printing size here is A4.

When the reader receives a print command from the main controller 129 at the timing shown by the broken line in FIG. 27 while reading the original, the printer controller 250 determines the activation timing of the printer main scanning motor 209 by the reader main scanning motor 105. It is delayed until the return start time t14, and from there, printing for one shuttle is executed according to a predetermined printing sequence. At this time, by controlling the reader main scanning motor 105 so that the return time of the reader to the home position becomes the same as the required scanning time of the printer unit, the return operation of the reader and the printing operation are completed simultaneously. That is, as described in the first embodiment, the return operation at the time of the single operation is changed from the stop state to 500 pps → 4000 pps → 50.
When the reader and the printer are operating simultaneously and asynchronously while returning to the home position at a high speed of 0 pps (dashed line in the figure), the return speed of the reader becomes exactly the same as the scanning speed of the printer. As shown, 500
By returning to the home position at pps → 2000 pps → 500 pps, the reader and the printer stop at the same time at t15.

When printing for one shuttle is completed,
The printer controller 250 is the reader controller 13
For 0, a 1 shuttle print end command is sent. Then, the reader controller 130 performs reading in accordance with a predetermined reading sequence, and at the same time, the printer controller 250 drives the printer main scanning motor 209 to return to the home position. Similarly, the return speed of the printer is changed to the reading speed of the reader (500 pps → 2000 pps →
The printer main scanning motor 209 is controlled to be equal to 500 pps. This means that the reading and printing processes for one shuttle have been completed.

In the above sequence, the reading return operation is performed during printing, and the printing returning operation is performed during reading, and the start and stop of each operation are performed simultaneously. This sequence continues until either reading by the reader unit or printing by the printer unit ends. For example, when the reading operation of the reader unit ends before the printing operation, the reader controller 130 sends a reading end command to the printer controller 250. Then, the printer controller 250 determines that reading by the reader has been completed, and returns the scanning sequence of the printer main scanning motor 209 to the original. That is, the return speed to the home position is changed from 500 pps to 2000 pp.
s → 500pps to 500pps → 4000pps →
Return to 500 pps (dashed line in FIG. 27).

Similarly, when the printing operation is completed first, the scanning sequence of the reader main scanning motor 105 returns to the original position, and the return to the home position is accelerated.

As described above, by changing the scanning sequence, the start and stop of the reader unit and the printer unit are executed at the same time. Therefore, the printer unit starts and stops during the reading scan, or during the print scan. The reader unit does not start or stop, and disturbance of the read image or the print image due to vibration can be avoided. Further, immediately after the reading by the reader section is completed, the scanning sequence of the printer is immediately returned to the one before the change, thereby shortening the scanning time.

In this embodiment, the scanning sequence of each carriage when an image print command is input from the outside while the reader is reading a document has been described. However, a read command is input when the printer is printing. The same can be considered for the case in which it is performed.

In the present embodiment, the case where the print command is input during the reading operation of the reader has been described. However, the case where the print command is input while the motor is slowing down, slowing down, or returning to the home position. Can be similarly considered (FIG. 28). That is, printing may be started at the return start timing after the reading of one shuttle has been completed.

In FIG. 27, the return speed of the reader is set to match the printing speed of the printer, and the return speed of the printer is set to match the return speed of the reader. Printing may be started in a sequence in which the return operation of reading is stopped after printing is completed later, or after the return operation of reading is started. However, when printing or reading,
Any sequence may be used as long as the start and stop of the return operation are not executed.

In the previous example, the reading size of the reader and the printing size of the printer are the same A4, the moving speed of the main scanning carriage 101 of the reading unit and the printer carriage 2 of the printing unit.
07 is the same (500 pps → 2000p)
ps → 500 pps). Here, the reading size is A4, the printing size is A5, and the main scanning carriage 101 of the reading unit is halved at a speed (500 pp).
The scanning sequence of each scanning carriage when moving at (s → 1000 pps → 500 pps) will be described.

While the reader is reading an A4 size document,
When an A5 size print command is received from the main controller 129 at the timing indicated by the broken line in FIG.
Is delayed until the reader main scanning motor 105 returns to the start timing t16, and then printing for one shuttle is executed in accordance with a predetermined print sequence. At this time, the reader main scanning motor 105 is set so that the return time of the reader to the home position is equal to the required scanning time of the printer unit.
By controlling the rotation speed, the return operation of the reader and the printing operation are completed at the same time.

Specifically, as described in the previous section, the return operation in the single operation is performed from the stop state to 500 pps → 4000.
It returns to the home position at a high speed from pps to 500 pps (indicated by the dashed line in the figure). However, this is not the case when the reader and the printer operate simultaneously and asynchronously. In this case, the return speed of the reader is changed from the stop state to 500 pps to 2000 p.
After returning to the home position at ps → 500 pps, the reading size is A4 and the printing size is A5.
The return of the reader stops, and the printer main scanning motor 209 stops until the reader finishes returning. This will increase the scanning time. If it is desired to stop the scanning at the same time in order to shorten the scanning time, the reader controller 130 receives various conditions such as the print size and the printing speed from the printer controller 250, calls the optimal return speed of the reader from the table, and uses the speed. What is necessary is just to rotate the reader main scanning motor 105.

When the printing for one shuttle is completed,
The printer controller 250 is the reader controller 13
For 0, a 1 shuttle print end command is sent. Then, the reader controller 130 waits for the reader to return to the home position, and executes reading according to a predetermined reading sequence. At the same time, the printer controller 250 drives the printer main scanning motor 209 to return to the home position. In this case, similarly to the return of the reader unit, the printer controller 250 sends the read size and the read speed from the reader controller 130 to the home position. Is received from the table, and the printer main scanning motor 209 is rotated at that speed to simultaneously stop the returning and reading of the printer at the same time. .

Thus, the reading and printing processes for one shuttle have been completed.

As described above, even when the reading size and the printing size are different, and when the reading speed and the printing speed are different, the start and stop of the reader unit and the printer unit are simultaneously performed by changing the scanning sequence described above. Therefore, the printer unit does not start and stop during the reading scan, and the reader unit does not start and stop during the printing scan, and there is no disturbance of the read image or the print image due to vibration.

[Other Embodiments] The reader section of the above-described embodiment has a structure in which the reader carriage operates vertically and horizontally on the original to perform reading, and the printer section has the printer carriage mounted on the paper sent by the paper transport section. Although the printing is performed by reciprocating scanning, the structure may be reversed. In other words, the reader section may be a sheet-through type having a transport section, or the printer section may be configured to scan vertically and horizontally on paper fixed on a plane.

In the present embodiment, the reader main scanning motor 105 and the printer main scanning motor 209 have the same slow-up curve at startup and slow down curve at stoppage, but they may be different. However, in this case, the start timing of reading and printing is adjusted so that the start timing of scanning does not coincide with the start timing of reading (FIG. 30).

Further, the printing means is not limited to the ink jet type, but can be applied to other general recording heads such as a thermal head.

The present invention brings about an excellent effect particularly in a recording head and a recording apparatus which use thermal energy among ink jet recording methods.

The typical configuration and principle are described in, for example, US Pat. Nos. 4,723,129 and 4,740.
It is preferable to use the basic principle disclosed in the specification of Japanese Patent No. 796. This method can be applied to both the so-called on-demand type and the continuous type. In particular, in the case of the on-demand type, liquid (ink)
By applying at least one drive signal corresponding to the recorded information and providing a rapid temperature rise exceeding nucleate boiling, to the electrothermal transducer arranged corresponding to the sheet or liquid path in which is held, This is effective because heat energy is generated in the electrothermal transducer, and the film is boiled on the heat-acting surface of the recording head. As a result, bubbles in the liquid (ink) can be formed in one-to-one correspondence with the drive signal. By discharging the liquid (ink) through the discharge opening by the growth and contraction of the bubble, at least one droplet is formed. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable. Examples of the drive signal in the form of a pulse include those described in U.S. Pat.
Suitable are those described in US Pat. No. 45,262. If the conditions described in U.S. Pat. No. 4,313,124 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-angled liquid flow path) as disclosed in the above-mentioned respective specifications, U.S. Pat. No. 4,558,333 and U.S. Pat. No. 4,558,333 which disclose a configuration in which a heat acting portion is arranged in a bending region.
A configuration using the specification of Japanese Patent No. 459600 is also included in the present invention. In addition, Japanese Unexamined Patent Publication (Kokai) No. 123670/1984 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal converter for a plurality of electrothermal converters, and an aperture for absorbing pressure waves of thermal energy. The present invention is also effective as a configuration based on JP-A-59-138461 which discloses a configuration corresponding to a discharge unit.

[0138]

As described above, when reading and printing are performed simultaneously and asynchronously, scanning or starting of reading or printing, particularly, reversal is performed so that the timing of inversion does not overlap during execution of the other scanning. Be able to change the sequence. Thus, when reading and printing operate simultaneously, it is possible to avoid image disturbance due to vibration applied to one scan to the other scan. Further, even when one of the operations is completed first, the changed scanning sequence can be restored, so that the scanning time can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a configuration of a reading and printing apparatus including a reading unit and a printing unit according to an embodiment.

FIG. 2 shows a recording paper roll used in a printing unit of the embodiment,
FIG. 3 is an external perspective view showing a configuration of a cartridge that stores the cartridge.

FIG. 3 is a side sectional view of a cartridge used in the printing unit of the embodiment.

FIG. 4 is a front cross-sectional view of a cartridge used in the printing unit of the embodiment, and a diagram showing a mechanism for mounting and locking the cartridge in the printing unit.

FIG. 5 is a diagram illustrating a state where the cartridge is mounted on the printing unit according to the embodiment and a state where the mounting is completed.

FIG. 6 is a diagram for explaining the operation of the one-way bearing.

FIG. 7 is a diagram illustrating a mechanism for raising and lowering a conveyance roller and a feeding pulley illustrated in FIG. 5A, and conveyance of a recording sheet by cooperation of a feeding roller and a pinch roller; .

FIG. 8 is a side view illustrating a configuration of a reading unit of the reading and printing apparatus according to the embodiment.

FIG. 9 is a top view illustrating a configuration of a reading unit of the reading and printing apparatus according to the embodiment.

FIG. 10 is an external perspective view illustrating a configuration of a reading unit of the reading and printing apparatus according to the embodiment.

FIG. 11 is a diagram illustrating a control state of each scanning motor in a reading unit and a printing unit of the reading and printing apparatus according to the embodiment.

FIG. 12 is an external perspective view illustrating a configuration of a printing unit according to the embodiment.

FIG. 13 is a block diagram illustrating a schematic configuration of a reading and printing apparatus according to an embodiment.

FIG. 14 is a flowchart illustrating a reading process in a reading unit of the reading and printing apparatus according to the embodiment.

FIG. 15 is a time chart at the time of reading in the embodiment.

FIG. 16 is a diagram illustrating a state where a cartridge is mounted in an insertion port of a printing unit according to the embodiment.

FIG. 17 is a diagram illustrating a printing sequence according to the embodiment.

FIG. 18 is a time chart at the time of printing according to the embodiment.

FIG. 19 is a time chart when reading and printing simultaneously operate in the first embodiment.

FIG. 20 is a time chart when the reading and printing document sizes are different in the first embodiment.

FIG. 21 is a time chart when the size of the original to be read is smaller than the size of the original to be printed in the first embodiment.

FIG. 22 is a time chart when the maximum sizes of reading and printing are different in the first embodiment.

FIG. 23 is a time chart when scanning speeds for reading and printing are different in the first embodiment.

FIG. 24 is a time chart when reading and printing simultaneously operate in the second embodiment.

FIG. 25 is a time chart when the activation timing of the printer main scanning motor is set at the time of starting the slowdown of the reader main scanning motor.

FIG. 26 is a time chart when printing is executed first in the second embodiment.

FIG. 27 is a time chart when reading and printing operate simultaneously in the third embodiment.

FIG. 28 is a diagram illustrating a motor slow-up according to the third embodiment;
9 is a time chart when a print command is input during a slowdown or a return operation.

FIG. 29 is a diagram illustrating reading and printing sizes according to the third embodiment;
6 is a time chart when scanning speeds are different.

FIG. 30 is a time chart when the start-up curve differs between reading and printing.

[Explanation of symbols]

 101 Reader main scanning carriage 105 Reader main scanning motor 106 Reader sub scanning carriage 108 Reading unit 109 Reader sub scanning motor 205 Recording head 207 Printer carriage 209 Printer main scanning motor

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI H04N 1/23 101 B41J 3/04 101Z (56) References JP-A-59-138461 (JP, A) JP-A-63-102460 (JP, A) JP-A-2-63372 (JP, A) JP-A-2-864 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 1/04-1/207 H04N 1 / 23-1/31

Claims (10)

(57) [Claims] 1. A first scanning means for reciprocatingly scanning at least a reading means for electrically reading an original, and a second scanning means for reciprocally scanning a printing means for recording a print image on a recording medium. A reading and printing device arranged in a housing and capable of independently operating the first scanning means and the second scanning means, wherein the reading means reads the original and the printing means
When the image recording by the first operation is performed at the same time, the first
Reciprocating scanning of one of the scanning means and the second scanning means
The start, stop, and inversion timings in
During the moving scan except the above timing in the reciprocating moving scan
So that the first scanning means or the
The reciprocating scanning of at least one of the second scanning means is controlled.
A reading and printing device characterized by changing the control. 2. The method according to claim 1, wherein the first and second scanning units operate at the same time when the reading unit and the printing unit operate at the same time. 2. The reading and printing apparatus according to claim 1, wherein the reading and printing are delayed. 3. The apparatus according to claim 2, wherein the activation of the first scanning means and the activation of the return operation are simultaneously performed by delaying the activation timing of the other scanning means. The reading and printing apparatus according to the above. 4. The reading and printing apparatus according to claim 3, wherein the scanning time of at least one of the scanning units can be changed. 5. The reading method according to claim 2, wherein the scanning of the one scanning means is started after the scanning of the other scanning means is completed by delaying the activation timing of the other scanning means. Printing device. 6. The reading and printing apparatus according to claim 5, wherein the return operation of the first and second scanning units is performed simultaneously. 7. The method according to claim 1, further comprising: delaying a start-up time of the other scanning means so that the second scanning means returns during the scanning of the first scanning means or the return operation of the second scanning means. 3. The reading and printing apparatus according to claim 2, wherein the reading or printing operation is performed by the first scanning unit. 8. The reading and printing apparatus according to claim 7, wherein a time required for the return operation is changed by a scanning sequence of the first and second scanning units. 9. The control of the first and second scanning means when the reading means and the printing means operate at the same time, and when the operation of the one scanning means is completed, the other scanning means. 2. The reading and printing apparatus according to claim 1, wherein the control of the reading and printing is changed. 10. The printing means is provided for each of a plurality of discharge ports for discharging ink and a corresponding discharge port, and causes a state change due to heat in the ink to cause the ink to flow from the discharge port based on the state change. The reading and printing apparatus according to any one of claims 1 to 9, further comprising a thermal energy generating unit configured to eject the liquid to form flying droplets.