JP3292376B2 - 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 a printing apparatus for printing on a plurality of printing media, and more particularly, to a printing medium discharge.

[0002]

2. Description of the Related Art A printing apparatus includes a platen for supporting a print medium and a print head for printing on the print medium supported by the platen. In addition, printing media on which printing is performed include cut sheets cut to a predetermined length and continuous forms that are long and continuous and do not have a predetermined length. There are various types of printing media depending on the width, thickness, etc., even if the form is the same. As described above, in the case of selectively performing printing on a plurality of printing media of different types or the same type, conventionally, a feeding device is provided for each printing medium, and the type of the printing medium changes. For example, when it is necessary to discharge the print medium currently supplied between the print head and the platen, among the plurality of discharge instruction means provided for each print medium, Corresponding means have been operated by the operator.

[0003]

However, if the ejection instruction means is provided for each print medium, the number of instruction means is large, and it is inevitable that the operability is deteriorated, such as being confused at the time of operation or making a mistake easily. The first and second aspects of the present invention have been made to improve the operability of discharging a print medium in a printing apparatus that performs printing on a plurality of print media alternatively.

[0004]

According to a first aspect of the present invention, there is provided a printing apparatus provided with the platen and a print head, wherein (a) printing is performed on the print head and the platen. A first series book feeder, which is provided on the downstream side in the print medium feed direction, and feeds a first series book as a print medium while pulling it out from the print head and the platen, and (b) a print head and a platen. provided on the upstream side in the print medium feeding direction during printing, the second communication book is printed medium, a write-free second communication book feeder feeding between the printing head and the platen, the second (c)
The continuous paper feeder transmits the second continuous paper to a print head and a platen.
Can be sent in the direction opposite to the direction of feeding
(D) a form feeder for sending a form as a print medium between a print head and a platen; and (e) a common form for a plurality of types of the print medium.
The print head and the platen of the print medium.
One discharge instruction means for instructing discharge from between
(F) a print medium detecting means for detecting the type of the print medium supplied between the print head and the platen; and (g) when the discharge of the print medium is instructed by the discharge instructing means, the print medium detecting means. If the first communication book is detected without operating the first communication book feeder, when the second communication book is detected the second communication book feeder to a duplicate book direction of the opposite shall be operated to be fed, cut sheet is to subject matter that noncontinuous feed device the cut sheet provided with a discharge <br/> out control means is operated to be discharged when it is detected It is. According to a second aspect of the present invention, in order to solve the above-mentioned problem, the discharge control means is provided when a discharge medium is instructed by the discharge instructing means, and when the first series book is detected by the print medium detecting means. The gist of the invention is that the first series book feeder is made to send the first series book by an amount satisfying a predetermined condition, instead of not operating the first series book feeder. In addition,
The “amount satisfying the predetermined condition” is, for example, a setting position such as a position where a cutting perforation extending in the width direction of the first serial book and formed at equal intervals in the longitudinal direction is provided with a cutter. Or a predetermined amount, such as a multiple of the length of one page of the first series book.

[0005]

In the printing apparatus according to the first aspect of the present invention, when the discharge instruction means is operated, the discharge control is performed according to the print medium supplied between the print head and the platen. The first serial book is sent while being pulled out from the print head and the platen by the first serial book feed device provided on the downstream side of the print head and the platen in the feed direction at the time of printing. It is continuously supplied between the platen and not discharged. Further, even if the paper is fed in the reverse direction, if the paper is removed from the first series feeder, the paper is not sent, and the paper remains supplied between the print head and the platen. Therefore, when the first series book is supplied between the print head and the platen, the first series book feeder is not operated. Also, the second continuous feeder,
Since it is provided on the upstream side in the feed direction at the time of printing of the second continuous form, if the second continuous form is sent in a direction opposite to the forward direction of being sent between the print head and the platen, it is retracted from between them be able to. Furthermore, since the length of a cut sheet is fixed, the distance between the print head and the platen can be adjusted by sending the cut sheet in the forward direction or the reverse direction, which is sent between the print head and the platen, by the distance corresponding to the length. Can be evacuated from between. In the printing apparatus according to the second aspect of the present invention, when the ejection of the print medium is instructed, if the first series is detected, the first series is sent by an amount satisfying a predetermined condition. At this time, since the amount to be sent is fixed, the first serial book is not continuously supplied between the print head and the platen.

[0006]

As described above, according to the first aspect of the present invention, the discharge of a plurality of print media is performed in common for the print media.
The discharge is instructed by one provided discharge instruction means, and the discharge of the print medium supplied between the print head and the platen is controlled based on the detection of the print medium detection means. Therefore, the operator only needs to operate one ejection instructing unit when ejecting any of the plurality of print media, and can perform the operation without any hesitation, and there is no risk of an operation error and the operability is improved. The effect of improving is obtained.
According to the second aspect of the present invention, further, since the first series book is sent at the time of instructing the ejection of the print medium, it is possible to obtain an effect different from the case where it is not sent. For example, if the first series book is provided with a perforation for cutting, by sending the perforation to the position where the cutter is provided, it is possible to easily print the portion where the first series book was printed at the time of discharging. It can be cut, or if it is sent a predetermined amount, such as a multiple of one-page length of one page of the first series book, the first series book is sent shortly after the ejection instruction. Therefore, the operator can be prompted to perform the processing.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a platen. The platen 10 has a cylindrical shape, and is rotatably attached to a frame (not shown) by a shaft 12.
The rotation of 3 (see FIG. 2) is transmitted via a rotation transmission mechanism (not shown) and rotated. A print head 14 is arranged to face the platen 10. Print head 14
Is mounted on a carriage (not shown), and moves as the carriage is moved along the platen 10 to perform printing.

In this printing apparatus, printing is performed on four types of printing media: a first series book 20, a second continuous book 22, a manual cut sheet 24, and an automatic feed cut sheet 26. Each of the first and second consecutive books 20 and 22 has engagement holes formed on both edges parallel to the longitudinal direction at equal intervals, and has different widths or the same width. Can be selected according to the purpose. These first and second continuous forms 20 and 22 are sent by first and second continuous form feeders 28 and 30, respectively.
The manual cut sheet 24 and the automatic feed cut sheet 26 are sent by the cut sheet feeding device 32. Hereinafter, each feeding device 28, 3
0 and 32 will be described.

First, the first series book feeder 28 will be described. The first series book feeder 28 is provided downstream of the platen 10 and the print head 14 in the paper feed direction during printing, and has a pair of pin tractors 38. These pin tractors 38 have a plurality of pins 4 on the outer peripheral surface.
0 has an annular timing belt 42 erected at an interval equal to the interval between the engagement holes of the first serial book 20, is wound around a pair of timing pulleys 44 and 46, and is firstly wound in the longitudinal direction of the platen 10. They are arranged at a distance equal to the width of the continuous form 20. One of the timing pulleys 44 is a drive pulley that is rotated via a rotation transmission mechanism by a drive motor 13 that drives the platen 10, and the timing belt 42 is rotated by the rotation of the timing pulley 44.
Is orbited.

The first serial book 20 is inserted into the printing apparatus through an opening provided in the bottom wall of the frame, passes between the platen 10 and the print head 14, passes between the platen 10 and the paper bail 50, and is inserted into a pin. By being hung on the pins 40 of the tractor 38 and causing the timing belt 42 to circulate, it is sent while being pulled out from the print head 14 and the platen 10.

In the feed path of the first serial book 20 sent as described above, a first serial book detection sensor 52 is provided upstream of the platen 10 and the print head 14 in the feed direction during printing. The sensor 52 is a light reflection type sensor. When the first serial book 20 is supplied between the platen 10 and the print head 14, the light from the light emitter is reflected and received by the light receiver, and the ON signal is received. And if not supplied, the light receiver does not receive light and outputs an OFF signal.

Next, the second continuous form feeder 30 will be described. The second serial feeder 30 is located upstream of the print head 14 and the platen 10 in the paper feed direction during printing, and
And has a pair of pin tractors 60. These pin tractors 60 are
8, the timing belt 6 on which the pins 62 are erected
4 and is wound around a pair of timing pulleys 66 and 68, and extends in the longitudinal direction of the platen 10.
Are arranged at a distance equal to the width of the first. The timing belt 64 is moved by rotating the timing pulley 66 by the feed motor 13 (see FIG. 2) via a rotation transmission mechanism.

A guide roller 74 is provided between the pin tractor 60 and the platen 10, and the second serial book 22 hung on the pin 62 is guided by the guide roller 74 by the rotation of the timing belt 64. Platen 10
And between the paper head 50 and the print head 14, and further forward in the forward direction and between the paper bail 50 and the platen 10 in the opposite direction.

The timing pulley 66 of the pin tractor 60
A second continuous sheet detection sensor 76 is provided in a portion between the first and second sheets. The sensor 76 is a light reflection type sensor similar to the first series book detection sensor 52, and
Generates an ON signal when it is mounted on the pin tractor 60, and issues an OFF signal when it is not supplied. Also,
A cutter 78 is provided between the paper bail 50 and the pin tractor 38 in the feed path of the first and second serial books 20 and 22 to cut the first serial book 20 at the time of sheet exchange and to cut the second serial book 20. 22 is cut at an appropriate position.

Next, the cut-sheet feeding device 32 will be described.
The cut-sheet feeding device 32 sends both the manual feed cut-sheet 24 and the automatic feed cut-sheet 26. Cut sheet feeder 3
Reference numeral 2 denotes two first feed rollers 8 that follow the platen 10 and feed a manual sheet 24 and an automatic feed sheet 26.
0, 82, and the first feed roller 8 in the cut-sheet feed direction.
0, 82, and a pair of second feed rollers 83 for feeding the manual feed cut sheet 24 and the automatic feed cut sheet 26 to a position where the platen 10 and the first feed roller 80 come into contact with each other. The second feed roller 83 is rotatably supported by a frame, and is rotated by the drive motor 13 via a rotation transmission mechanism. The feed motor 13 includes a platen 10, a first serial feeder 28, and a second continuous feeder 3.
0, a motor shared by the cut-sheet feeder 32, a rotation transmission mechanism for transmitting the rotation of the feed motor 13 to the pin tractor 38, a rotation transmission mechanism for transmitting the rotation to the pin tractor 60, and a rotation transmission mechanism to the second feed roller 83. Between the rotation transmission mechanism,
A switching device 84 (see FIG. 2) for switching the rotation transmission is provided, and the first serial book 20, the second continuous book 22, and the manual cut sheet 24 are provided.
And whether to send the automatic feed single sheet 26,
Switching of rotation transmission is performed.

The platen 10 is rotated when sending any of the first serial book 20, the second serial book 22, the manual cut sheet 24, and the automatic feed cut sheet 26. The rotation speed is changed as the rotation transmission to the pin tractors 38 and 60 and the second feed roller 83 is switched, and is slightly lower than the feed speed of the first series book 20 by the pin tractor 38 when the first series book 20 is fed. The second serial book 20 is sent at a slower speed, and the second serial book 20 is sent by the pin tractor 60 when the second serial book 20 is sent.
The second feeder 22 is fed at a speed slightly higher than the feed speed of the second feeder 2 to take up the slack.
The feed speed is the same as the feed speed of No. 3. The switching device 84 is provided with a switching detection switch 86 (see FIG. 2) for detecting to which state the rotation is transmitted.

The manual sheet 24 is inserted into the frame by the operator from the side opposite to the print head 14 with respect to the platen 10, and the leading end of the sheet 24 is a pair of second feed rollers 8.
3 is brought into contact with the contact position. Then, if the second feed roller 83 and the platen 10 are rotated by the drive motor 13, the manual cut sheet 24 is sent between the print head 14 and the platen 10. Note that the print head 14 and the platen 1
Although not shown, a tray is provided on the downstream side of the tray 0 so as to accommodate a manually inserted cut sheet 24 after printing. Also, the fact that the manual cut sheet 24 has been inserted indicates that the cut sheet detection sensor 88 provided adjacent to the second feed roller 83.
Is detected by The sensor 88 is a light reflection type sensor similar to the first and second continuous sheet detection sensors 52 and 76.

The automatic feed cut sheet 26 is placed in a case 90, set on a frame, automatically sent to a second feed roller 83 by a sheet feeding device 92, and sent along the same route as the manual feed cut sheet 24. The paper feeding device 92 is provided with a paper feeding roller 94, sends out the uppermost automatic feeding single sheet 26 out of the automatic feeding single sheet 26 put in the case 90 from the case, and attaches the tip thereof to the second feeding roller 94. Send to 83. Thereafter, the paper feed roller 94 is driven, and follows the automatic feed cut sheet 26 being fed by the second feed roller 83, the platen 10, and the first feed rollers 80 and 82. The case 90 is provided with a connector. When the case 90 is set on the frame, the connector 9 provided on the frame side is provided.
6 and a signal indicating that the case 90 has been set is output. In this embodiment, five types of automatic feed single sheets 26 are set (only one type is shown in the figure).

The present printing apparatus uses a control device 100 shown in FIG.
Is controlled by The control device 100 includes a CPU 10
2. A computer mainly having a ROM 104, a RAM 106, and a bus 108 connecting them. An input interface 110 is connected to the bus 108, and an operation panel 112, a first serial book detection sensor 52, a second continuous book detection sensor 76, a slip detection sensor 88, a connector 96, a changeover detection switch 86, and the like are connected to the bus 108. .

The operation panel 112 includes a print mode for determining which one of the four types of printing paper (the five types of automatic feed single sheets 26 are treated as one type) for printing, and data necessary for printing. As shown in FIG. 3, a number key 114 for inputting data such as the number of print copies, a feed / discharge key 118 for instructing supply and discharge of printing paper. There are provided various keys such as a paper selection key for selecting the type of printing paper to be supplied between the printing head 14 and the platen 10. The paper selection key is provided for each of the four types of printing paper. Note that paper feeding means that when printing is started in a state where printing paper is not supplied between the printing head 14 and the platen 10, the first printing paper is moved between the printing head 14 and the platen 10. This is a supply operation in which the printing paper selected by the paper selection key is supplied.

On the upper side of the paper feed / discharge key 118,
There are provided a paper feed indicator lamp 120 and a paper discharge indicator lamp 122 which indicate which of paper feeding and paper discharging is performed when the key 118 is depressed. If the paper feed / discharge key 118 is operated in a state where the printing paper is mounted, the paper is discharged as described later. Therefore, when the printing paper is mounted, the paper discharge indicator lamp 122 is turned on.
If no print paper is loaded, the paper feed / discharge key 11
Since the paper is fed by the operation 8, the paper feed indicator 1
20 is lit.

Whether or not the printing paper is mounted on the platen 10 is detected as follows. First series book 20
About, the detection signal of the first series book detection sensor 52 is ON.
If so, it is determined that it is mounted. Second consecutive book 2
For 2, the second continuous sheet detection sensor 76 is ON,
In addition, when the sensor 76 is turned on and the second continuous book 22 has been fed by a predetermined amount or more, it is determined that the second continuous book 22 is attached. When the operator sets the second serial report 22 on the pin tractor 60, the operator may set the second serial report 22 at a position detected by the second serial report detection sensor 76. It is not possible to immediately judge that the second serial book 22 is mounted only by the fact that the second continuous form 22 is mounted, and a predetermined amount, that is, a sufficient amount to be mounted on the platen 10, is sent in the ON state. Whether or not it is mounted on the platen 10 is determined based on whether or not it is mounted.

The cut sheets 24 and 26 are mounted when the cut sheet detection sensor 88 is ON and the cut sheets 24 and 26 are fed by a predetermined amount or more from the time when the sensor 88 is turned ON. And the sensor 88 is off even if the detection signal of the sensor 88 is off.
In the state where the cut sheets 24 and 26 have not been sent in excess of the predetermined amount from the point in time, it is determined that they have been mounted. Since the tips of the cut sheets 24 and 26 are in contact with the second feed roller 83 and are not mounted on the platen 10 yet, the detection signal of the sensor 88 is turned on. Instead, the determination is made based on whether or not a predetermined amount has been sent from the time when the switch is turned ON. In addition, cut-sheet 24,
Reference numeral 26 denotes a printing paper having a fixed length. When the printing paper 26 passes through the sensor 88, its detection signal is turned off. It is not possible to judge that the camera is not mounted merely by saying that is turned off, but it is judged by whether or not a predetermined amount has been sent since the camera was turned off. The paper feed display lamp 120 and the paper discharge display lamp 122 are selectively turned on depending on whether or not the printing paper is mounted on the platen 10.
Regardless of whether or not 8 is operated, one of them is always lit. The paper feed and the paper discharge may be indicated by turning on / off one lamp.

An output interface 126 is connected to the bus 108, and drive circuits 128, 132, 134,
136, the print head 14, the drive motor 13, the switching device 84, and the paper feeding device 92 (the paper feeding device 92 is provided for each of the five types of automatic feed single sheets 26 set in the printing device. (One is typically shown in the figure). Further, in the ROM 104,
Various routines necessary for printing are stored, including a paper feed / discharge control routine shown in the flowchart of FIG. Hereinafter, supply and discharge of the printing paper based on the paper supply / discharge control routine will be described. This routine is called and executed at regular intervals (several milliseconds).

First, in step S1 (hereinafter abbreviated as S1; the same applies to other steps), paper feeding / feeding is performed.
It is determined whether the discharge key 118 has been operated and an ON signal has been issued. If the operation has not been performed, the determination result in S1 is NO, and the execution of the routine returns to the main routine (not shown).

If the sheet ejection is instructed, the judgment result of S1 becomes Y
When ES is reached, S2 is executed, and the
Is on, whether the first series book 20 is the platen 1
It is determined whether or not the ink is supplied between 0 and the print head 14. If there is the first series book 20, the judgment result of S2 is YE
In this case, nothing is performed, and execution of the routine returns to the main routine. The first serial book 20 is inserted from below the frame, and is pulled out above the platen 10 and the print head 14 by a first serial book feed device 28 provided on the upstream side of the platen 10 and the print head 14 in the feeding direction at the time of printing. If it is sent in the opposite direction, it will continue to be supplied, and if it is sent in the opposite direction, it will not be sent after it comes off the pin tractor 38, and the platen 10
Nothing is performed because the paper is not discharged from between the print head 14 and the print head 14. In this case, even if the discharge is instructed, the discharge is not performed.
Is cut by a cutter 78 and removed as necessary.

If the first serial book 20 is not between the platen 10 and the print head 14, the determination result in S2 is NO, and the second serial book 22 is moved between the platen 10 and the print head 14 in S3. A determination is made as to whether it is being supplied. As described above, this determination is made by the paper feed indicator 120
Alternatively, the determination is performed in the same manner as in the case where it is determined whether or not the second serial book 22 is mounted on the platen 10 in order to turn on the paper discharge display lamp 122. If the second continuous form 22 has been supplied, the determination result of S3 becomes YES and S7 is executed, and the pin tractor 60 transmits the second continuous form 22 to the platen 10
The platen 10 is rotated in the direction opposite to the forward direction in which the paper is fed between the printer and the print head 14, the platen 10 is rotated in the reverse direction, and the second serial book 22 is sent to the second serial feed device 30. It is discharged from between the platen 10 and the print head 14. The second continuous form 22 is sent until it is no longer detected by the second continuous form detection sensor 76, and stops. At the time of discharging the second continuous document 22, the transmission of the rotation of the drive motor 13 to the second feed roller 83 is interrupted by the switching device 84. Is also sent to the platen 10 side so that paper jam does not occur. At the time of discharge of the second continuous paper 22, the rotation direction of the platen 10 is opposite to that at the time of paper feeding, and a paper jam occurs between the platen 10 and the second feed roller 83 which rotate in opposite directions.

If the second continuous form 22 is not between the platen 10 and the print head 14, the determination result in S3 is NO, and in S4, it is determined whether or not the automatic feed cut sheet 26 is supplied. Will be This determination is made with the feed indicator lamp 1
The determination is performed in the same manner as when the automatic feed single sheet 26 is attached to the platen 10 when the sheet discharge lamp 20 is turned on.

If the automatic feed single sheet 26 is supplied, the result of the determination in S4 is YES, and the step S8 is executed, and the sheet feeding operation by the sheet feeding device 92 is released, and the sheet feeding roller 94 is released.
Is stopped and the automatic feed single sheet 26 to be ejected is driven to move. Then, the first and second feed rollers 80, 82, and 83 feed the automatic feed cut sheet 26 by a predetermined distance in the feed direction at the time of printing, and discharge it from between the print head 14 and the platen 10.

If the automatic feed cut sheet 26 is not supplied, the judgment result in S4 is NO, and in S5, it is determined whether or not the manual feed cut sheet 24 is supplied.
The determination is performed in the same manner as the determination of the presence or absence of attachment to zero. If the manual cut sheet 24 has been supplied, the determination result in S5 becomes YES, and the execution of S6 activates the feed second roller 83 to feed the manual cut sheet 24 by a predetermined distance in the feed direction at the time of printing. And the platen 10. If the manual cut sheet 24 has not been supplied, the determination result in S5 is NO, but in this case, none of the four types of printing paper is supplied between the print head 14 and the platen 10. Paper feed / discharge key 118
Operation means paper feeding, and paper feeding is performed in S9. That is, the printing paper selected by the printing paper selection key is sent between the print head 14 and the platen 10. As described above, when the printing paper is not set, the paper feeding operation is performed, and the wasteful discharging operation is not performed even though the printing paper is not set. When the first serial book 20 is sent, the rotation transmission to the pin tractor 60 and the second feed roller 83 is interrupted, and the second serial book 22 and the cut sheet 2 are cut off.
4 and 26 are not sent by mistake.

As described above, if the discharge control according to the print paper supplied between the print head 14 and the platen 10 is performed based on the operation of the paper feed / discharge key 118,
For example, if the type of printing paper used for printing is changed and the discharge is instructed in the state where the next print mode is instructed, the printing currently supplied between the print head 14 and the platen 10 is performed. Although the type of paper is different from the type of printing paper on which printing is to be performed next, the discharge control according to the actually supplied printing paper is performed, and the printing paper is reliably discharged. Specifically, the manual cut sheet 24 is used for the print head 1.
4 and the platen 10, and then when printing is performed on the second serial book 22, if the print mode using the second serial book 22 is instructed, the rotation transmitting direction of the drive motor 13 is transmitted. The switching device 84 is switched to a device for transmitting the rotation to the pin tractor 60, and is automatically switched to a device for transmitting the rotation to the second feed roller 83 based on the detection of the manual cut sheet 24. The discharge of the cut sheet 24 is performed. At the time of discharging and feeding the manual cut sheet 24 or the automatic feed cut sheet 26, the rotation of the drive motor 13 to at least the pin tractor 60 is interrupted by the switching device 84. Will not be sent. When the manual cut sheet 24 or the automatic feed cut sheet 26 is supplied, the first series book 20 is not set on the pin tractor 38, and even if rotation is transmitted to the pin tractor 38, the cut sheets 24, 26 are not set. There is no problem with the feed of the pin tractor 6
If the rotation is transmitted to 0, the second continuous sheet 22 is converted to the single sheets 24, 2
This is because the message is sent while being superimposed on 6.

As is clear from the above description, in the present embodiment, the paper feed / discharge key 118 constitutes a discharge instruction means, and the first series book detection sensor 52 and the second series book detection sensor 7
6, the cut-sheet detection sensor 88 and the connector 96 constitute a print medium detecting means, and the portion of the ROM 104 for storing S1 to S8 and the portion of the CPU 102 for executing those steps constitute the discharge control means.

In the above embodiment, when the first series book 20 is supplied between the print head 14 and the platen 10 when the paper feed / discharge key 118 is operated, no operation is performed. Although the transmission is not performed, the transmission may be performed in an amount that satisfies a predetermined condition. For example, the first series book 20
Are generally provided at equal intervals in the longitudinal direction, and in that case, the page changes at the position of the perforation. Therefore, if a cutter is provided at a position on the downstream side in the continuous feed direction of the pin tractor 38 and a perforation on the upstream side in the feed direction of the printed portion of the first serial book 20 is sent to the position of the cutter,
The first serial book 20 can be easily cut just at the break position. Further, without providing the cutter, a feed position may be set on the downstream side or the upstream side of the pin tractor 38, and the perforation may be sent to the feed position, and even if the perforation is not provided. Alternatively, a break position corresponding to a perforation may be assumed in the first series book 20, and the break position may be sent to a predetermined feed position such as a position where a cutter is provided.

Further, when printing on the first serial book 20, if a certain space is automatically provided in the longitudinal direction between paragraphs, if a certain space or a plurality of spaces is provided. One length may be sent, or a predetermined fixed amount may be sent regardless of such a space. If such a feed is performed at the time of a sheet ejection instruction, it is possible to obtain effects such as actively prompting the operator to eject the first series book 20.

In the above embodiment, the sensor 52 determines which of the four types of printing paper is supplied between the printing head 14 and the platen 10.
Although the determination is made based on the detection signals of 76 and 88, the RAM 106 is determined based on the instruction of the paper selection key.
Stores the type of print paper supplied between the print head 14 and the platen 10, detects the type of print paper fed based on the storage, and performs a discharge operation corresponding to the print paper. May be performed. In this case, the RAM 106 and the RAM 106 of the CPU 102
The part for storing the type of the printing paper selected and the part for reading out the stored type of the printing paper constitute the printing paper detecting means.

Further, in the above-described embodiment, whether one of the paper feed indicator lamp 120 and the paper output indicator lamp 122 is lit indicates whether or not the printing paper is mounted on the platen 10, and the next paper feed / discharge. When the key 118 is operated, the operator is informed which of paper feeding and paper discharging is performed. Therefore, the first serial book 20 is mounted on the platen 10, When the series book detection sensor 52 is ON, the paper discharge indicator lamp 122 is lit to indicate that paper is to be discharged the next time the paper supply / discharge key 118 is operated. However, the first serial book 2
In the case of 0, nothing is performed even if the paper feed / discharge key 118 is pressed, the detection signal of the first series book detection sensor 52 remains ON, and the paper discharge display lamp 122 remains lit. Therefore, in this case, the paper feed indicator 120
And by turning off both the paper discharge display lamp 122, the first series book 20 is mounted on the platen 10,
The operator may be notified that the paper ejection has been instructed. In the case where the paper feed and the paper discharge are displayed by turning on / off one lamp, the fact that the discharge of the first series book 20 has been instructed may be displayed by flashing the lamp.

Further, in the above embodiment, the rotation of the drive motor 13 is transmitted to any one of the continuous paper feeder 28, the second continuous paper feeder 30, and the cut-sheet feeder 32. Is detected by the changeover detection switch 86. However, the device to which the rotation is transmitted corresponds to the type of printing paper in one-to-one correspondence. The type may be detected by storing the type in the RAM 106.

In the above-described embodiment, printing is performed on two types of cut-sheets, that is, automatic feed cut-sheets and manual feed cut-sheets. You may.

In the above embodiment, the first and second serial books 20 and 22 have engagement holes formed at both edges in the longitudinal direction and are fed by the pin tractors 38 and 60. It may be one that does not have a hole and is fed by friction of a feed roller.

In addition, without departing from the scope of the claims, the present invention can be carried out in various modified and improved forms based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing a main part of a printing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a control device for controlling the printing device.

FIG. 3 is a plan view showing a part of an operation panel of the printing apparatus.

FIG. 4 is an RO of a computer which is a main component of the control device.
9 is a flowchart illustrating a sheet supply / discharge control routine stored in M.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Platen 14 Print head 20 First serial book 22 Second serial book 24 Manual sheet 26 Automatic feed single sheet 28 First serial book feeder 30 Second serial feeder 32 Single sheet feeder 52 First serial book detection sensor 76 Second continuous sheet detection sensor 88 Single-sheet detection sensor 100 Controller 118 Feed / discharge key

Claims (2)

(57) [Claims] 1. A printing apparatus comprising: a platen for supporting a print medium; and a print head for printing on a print medium supported by the platen, wherein the print medium is fed to the print head and the platen during printing. A first serial book feeder provided downstream in the direction and pulling out a first serial book as a print medium from the print head and the platen, and a print medium feed for printing to the print head and the platen. provided on the upstream side in the direction, the second communication book is printed medium, the feed between the print head and the platen write No
A second serial feeder, and the second serial feeder, the second serial form, print head
And the platen in the opposite direction.
And a cut-sheet feeding device that sends a cut-sheet as a print medium between the print head and the platen, and is provided in common for a plurality of types of the print media,
Detection and one discharge instruction means, the type of print medium being fed between said print head and the platen to direct the discharge of <br/> from between the print head al printing medium and the platen Print medium detection means, and when the ejection of the print medium is instructed by the discharge instruction means, when the first series book is detected by the print medium detection means, the first series book feed device is operated not, when said second communication book is detected activates the second communication book feeder as the second communication book is sent in the direction of the opposite, when the cut sheet is detected the single-cut feeder
And a discharge control means for operating the cut sheet so as to be discharged. 2. The system according to claim 1, wherein said discharge control means includes means for controlling the discharge of the print medium by the discharge instructing means, and detecting the first serial book by the print medium detecting means. 2. The printing apparatus according to claim 1, wherein the first series book is sent by an amount satisfying a predetermined condition, instead of not operating the apparatus.