JPH05246094A - Printer - Google Patents

Abstract

PURPOSE:To reduce a probability of an occurrence of jamming to a minimum to ensure a stable paper feed action and to enhance a paper supply speed. CONSTITUTION:A paper feed speed is controlled to a first speed, which is a predetermined low speed, during a fixed time after the start of a paper feed from an externally-attached paper supply device 1. A paper feed speed is controlled to a second speed, which is a predetermined high speed, until paper reaches a manual insertion paper supply part 210 after the elapse of said fixed time. A paper feed speed is controlled to a third speed, which is coincident with a paper feed speed at a paper feed part 20, after the paper reaches the manual insertion paper supply part 210.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer provided with an external paper feeding device for feeding papers of non-standard size.

[0002]

[Prior Art]

Conventionally, in printers, fixed-size sheets are automatically fed from a sheet feeding cassette, and the type of the sheet feeding cassette is limited. The non-standard-size sheets such as postcards and OHP sheets are configured to be fed by manually inserting the sheets from the manual feed section.

However, when the paper is fed from the manual paper feeding section, the problem that the user of the printer cannot leave the printer until the paper feeding is completed and the paper is manually inserted, the paper feeding timing is Since it cannot be fixed, there is a problem that the time required for paper feeding becomes long.

In order to solve such a problem, an external paper feeding device that automatically feeds a non-standard size paper is attached to the manual paper feeding unit, and the manual paper feeding is performed from the external paper feeding device. Paper was being fed through the unit. In this case, the speed at which the paper is conveyed in the external paper feeding device is approximately the same as the speed in which the paper is conveyed in the engine section of the printer (a general term for the part of the printer excluding the controller). This is the optimum speed for preventing jamming of the paper at the contact point with the section.

[0006]

However, if the paper feeding speed in the external paper feeding device is set to the optimum speed as described above, the stroke distance of the paper feeding from the external paper feeding device to the engine portion is long. However, there is a problem that the number of sheets fed per unit time cannot be increased. In order to solve this problem, it is conceivable to increase the sheet conveyance speed in the external sheet feeder. However, simply increasing the speed causes slack in the paper inside the engine unit and on the engine unit entrance side when the paper is sucked from the external paper feeding device to the engine unit, and this causes a high probability of jamming the paper. Because of the problem of occurrence, there is a demand for an apparatus capable of suppressing the probability of occurrence of jams and increasing the number of sheets fed per unit time.

The present invention has been made in view of the above circumstances, and it is possible to suppress the occurrence probability of jams and perform stable sheet feeding, and it is possible to increase the sheet feeding speed. An object of the present invention is to provide a printer provided with an external paper feeding device.

[0008]

SUMMARY OF THE INVENTION A printer according to a first aspect of the present invention is a printer, in which a main body unit conveys paper at a predetermined speed, and a main body unit manually feeds paper to the paper conveyance unit. A printer including a manual paper feeding unit for performing a sheet feeding operation, and an external paper feeding device attached to the outside of the manual paper feeding unit for feeding a sheet to the paper feeding unit via the manual paper feeding unit. A means for controlling the paper transportation speed to a first speed which is a predetermined low speed for a predetermined time after the transportation from the paper feeding device, and the paper reaches the manual paper feeding portion after the predetermined time has elapsed. Means for controlling the sheet conveyance speed to a second speed which is a predetermined high speed, and after the sheet reaches the manual feed section, the sheet conveyance speed is set to the sheet conveyance section. And a means for controlling to a third speed that matches the transport speed of And wherein the Rukoto.

A printer according to a second aspect of the present invention is a printer, in which a main body unit conveys paper at a predetermined speed, and a main body unit which manually feeds paper to the paper conveyance unit. A printer provided with an external sheet feeding device that is attached to the outside of the manual sheet feeding unit and that conveys a sheet to the sheet conveying unit via the manual sheet feeding unit. A means for controlling the conveyance speed of the paper to a first speed, which is a predetermined low speed, for a predetermined time after the start, and a sheet from the time after the predetermined time elapses until the sheet reaches the manual sheet feeding section. The transfer speed of the second is a predetermined high speed
Means for controlling the speed of the sheet, a means for determining whether or not the sheet conveying section is stopped in the state where the sheet reaches the manual sheet feeding section, and a state where the sheet reaches the manual sheet feeding section. If it is determined that the paper transport unit is stopped,
After stopping the external paper feeding device for a predetermined time, the paper feeding speed is controlled to a third speed that matches the paper feeding speed in the paper feeding unit, and the paper is fed to the manual paper feeding unit. If it is determined that the paper transport unit is not stopped in the reached state, a means for immediately controlling the transport speed of the paper to a third speed that matches the transport speed of the paper in the paper transport unit is provided. It is characterized by doing.

A printer according to a third aspect of the present invention includes a control section for controlling the main body section and a manual sheet feeding section for manual sheet feeding, and an engine section which is a section of the main body section excluding the control section. And attached to the manual feed section,
In a printer including an external paper feeding device that feeds paper through the manual paper feeding unit, a paper feeding mode indicating the paper feeding from the manual paper feeding unit to the engine unit from the control unit or the printer. A command for selecting one of the paper feeding modes representing the paper feeding from the external paper feeding device is given, and the engine unit is based on the command, and the manual paper feeding unit and the external paper feeding unit are supplied. It is characterized in that control relating to paper feeding of the paper device is executed.

[0011]

According to the first aspect of the invention, when the paper is fed from the external paper feeding device, the feeding speed of the paper is the first speed which is the predetermined low speed for the predetermined time after the start of the feeding. A second speed at which the sheet is conveyed at a high speed during a period in which the conveyance state of the external sheet feeder is stable and the sheet reaches the manual sheet feeder of the printer after the predetermined time has elapsed. Therefore, high-speed conveyance can be performed, and after the paper reaches the manual paper feeding unit, the paper conveyance speed becomes the third speed that matches the paper conveyance speed in the paper conveyance unit. Does not occur.

According to the second aspect of the invention, when the paper transport speed is changed from the second speed to the third speed, and the paper transport unit is stopped, the paper transport unit operates. Until the start, the external paper feeding device is stopped for a predetermined time, and then the paper transportation speed is controlled to the third speed, so that the paper transportation to the paper transportation unit is performed at the optimum timing. There is no slack in the sheet due to the sheet being conveyed by the external sheet feeder while the conveying section is stopped.

According to the third aspect of the invention, the engine section executes the control relating to the sheet feeding of the manual sheet feeding section and the external sheet feeding device based on the command given from the control section.
The control unit can perform the same control as to the paper feeding from the manual paper feeding unit and the paper feeding from the external paper feeding device.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a schematic vertical sectional view showing the configuration of the printer according to the present invention.

In FIG. 1, reference numeral 1 denotes an external paper feeding device which is attached to the printer main body 2 and automatically feeds non-standard size paper to the printer main body 2. The external sheet feeding device 1 is formed by arranging a plurality of sheet feeding bins 10, 10, 10 in a line, and is a manual sheet feeding port which is a sheet feeding port of a manual sheet feeding section 210 opened on a side surface of the printer body 2. It is externally attached to part 211. Paper feed bin 10
Is an inclined sheet mounting plate 11, and the sheet mounting plate.
A paper feed roller 12 provided near the lower end of the paper feed plate 11 for feeding the papers placed on the paper placement plate 11 one by one to the inside of the printer main body 2 through the manual paper feed port 201. Have

In the printer body 2, a manual paper feed port
Inside the 211, a manual paper feed roller 202 and a registration roller forming a part of the paper transport unit 20 in the printer body 2 are provided.
21 is provided, and the sheet inserted from the manual sheet feeding port 211 is conveyed to the registration roller 21 by the manual sheet feeding roller 212, and further from the registration roller 21 to a print processing unit (not shown). It is like this.

Next, the structure of the control system in the external paper feeder 1 and the printer main body 2 will be described. FIG. 2 is a schematic block diagram showing a configuration of a control system in the sheet feeding device 1 and the printer body 2.

The printer body 2 includes a controller 100 for controlling the operation of the printer body 2 and the external paper feeding device 1,
An engine unit 200 that represents components other than the controller, that is, a mechanical system and an electrical system such as the paper transport unit 20 and the print processing unit.
It is composed of. A command for printing output is input to the controller 100 from a personal computer (not shown) or the like.
0 is adapted to give a control signal including a video signal for printout to the engine section 200 in response to the command. The engine unit 200 performs operations such as sheet conveyance and printing processing based on the control signal, and outputs a status signal indicating an operating state such as operating or stopping, to the engine unit 200.
To give to.

Further, when attached to the printer main body 2, the external paper feeding device 1 is adapted to be supplied with a control signal for drive control thereof from the controller 100. The external paper feeder 1 is driven based on a control signal given from the controller 100.

Next, regarding the control operation of the printer thus constructed, two types of control operations of the first embodiment and the second embodiment will be described. However, the control described below is executed by the controller 100. FIG. 3 is a flowchart showing the procedure of the sheet conveyance control according to the first embodiment.

First, the first set speed V which is a predetermined low speed
The conveyance of the sheet in ₁ is started (step S1), and the measurement of the time T after the start of the conveyance of the sheet is started (step S2). Then, it is determined whether or not the time T has reached a first set time T ₁ which is a preset time set as a time required from the start of carrying to the stabilization of the paper carrying state (step S3). The time T after the start of conveyance is the first set time T
_When it is determined that the sheet has reached ₁ , the sheet conveyance speed is switched from the first set speed V ₁ to the second set speed V ₂ which is a predetermined high speed, and the sheet conveyance at the second set speed V ₂ is started. (Step S4).

Then, it is determined whether the time T after the start of conveyance reaches a second set time T ₂ which is a preset time required for the sheet to reach the manual feed roller 202 after the start of conveyance. It discriminated (step S5), and the time T after the start of conveyance, when it is judged becomes T ₂ second set time, from the second set speed V ₂ of the conveying speed of the sheet, the engine unit 200 (e.g., manual sheet Paper speed of paper roller 212) V
_The speed is switched to the third set speed V ₃ that is equal to ₃ and the conveyance of the paper at the third set speed V ₃ is started (step
S6).

The time T after the start of the conveyance is a preset time which is a time required from the start of the conveyance until the sheet reaches the registration roller 21 of the engine section.
It is determined whether or not the set time T ₃ has been reached (step S7),
When it is determined that the time T after the start of the sheet conveyance reaches the third set time T ₃ , the external paper feeding device 1 is stopped (step S8). By repeating the above-described processing, the sheets are sequentially fed from the external paper feeding device 1 to the engine unit 200.

Next, a method of determining each of the above-mentioned first set time T ₁ , second set time T ₂ and third set time T ₃ will be described. FIG. 4 is a schematic path diagram of the paper transport system for explaining a method of determining each set time in the paper transport control.

[0025] the sheet conveyance distance L ₂ from the sheet conveyance distance L ₁ and the manual paper feed roller 212 from the paper feed roller 12 to the manual sheet feed roller 212 to the registration roller 21, first the aforementioned
Set time T ₁ , second set time T ₂ , third set time T ₃ ,
The first set speed V ₁ , the second set speed V ₂ and the third set speed V ₃ are related by the following equations (1) and (2).

L ₁ = V ₁ · T ₁ + V ₂ (T ₂ −T ₁ ) (1)

L ₂ = V ₃ (T ₃ −T ₂ ) (2)

The first set time T ₁ , the second set time T ₂ and the third set time T ₃ are the paper feed distance L ₁ , the paper feed distance L ₂ , the first set speed V ₁ , and the second set speed V _2. If the third set speed V ₃ is appropriately determined, it can be obtained by using the relations of the expressions (1) and (2).

The control timing of the sheet conveyance control according to the first embodiment described above is as shown in FIG. 5 (a) and 5 (b) are timing charts showing the control timing of the sheet conveyance control according to the first embodiment, and FIG. 5 (a) shows the sheet conveyance speed of the external sheet feeding device 1. Engine part 200 in 5 (b)
Is shown.

As shown in FIG. 5A, the sheet feeding speed of the external sheet feeding device 1 is the first set speed V ₁ for stabilizing the sheet feeding state immediately after the sheet feeding is started. When it is considered that the paper transport state is stable (T =
T ₁ ), switching to the second set speed V ₂ . When the paper reaches the manual paper feed roller 212 of the engine unit 200 (T = T ₂ ), the paper feeding speed of the external paper feeding device is as shown in FIG.
As shown in (b), the speed is switched to the third set speed V ₃ which is the same as the paper speed V ₃ of the engine unit 200, and the paper is conveyed at the third set speed V ₃ by the engine unit.
The process is repeated until the 200 registration rollers 21 are reached. When the sheet reaches the registration roller 21 (T = T ₃ ), the motor torque of the registration roller 21 exceeds the motor torque of the sheet feeding roller 12, and the feeding force of the external sheet feeding device 1 becomes unnecessary. The paper feed roller 12 of the paper device 1 is stopped.

When the paper conveyance control as described above is performed, the paper is conveyed at high speed until the conveyed paper reaches the engine unit, so that the paper conveyance is speeded up and the paper is conveyed to the engine 200 unit. When it reaches, the sheet is conveyed at a speed equal to the sheet conveying speed of the engine unit 200, so that the sheet does not wrinkle and the occurrence of jam is suppressed.

Next, the paper conveyance control according to the second embodiment will be described. FIG. 6 is a flow chart showing the procedure of the paper transport control according to the second embodiment.

First, the conveyance of the sheet at the first set speed V ₁ is started (step S101), and the measurement of the time T is started (step S102). Then, the time T after the start of the sheet conveyance
Determines whether or not the first set time T ₁ has been reached (step S103), and if it is determined that the time T after the start of sheet transport reaches the first set time T ₁ , the sheet transport speed is set. said first switching from the setting speed V ₁ to a second set speed V _2, to start conveyance of the sheet in the second set speed V ₂ (step S10
Four) .

Then, it is determined whether or not the time T after the start of conveyance of the paper has reached the second set time T ₂ (step S10).
5), the time T after the start of the sheet conveyance is the second set time T ₂
If it is determined that it has become, it is determined whether or not the engine unit 200 (for example, the manual paper feed roller 212) is stopped (the state where the paper is not conveyed) based on the status signal given from the engine unit 200. Yes (step S106).

If it is determined in step S106 that the engine unit 200 is stopped, the external sheet feeding device 1 is stopped (step S107), and the time T after the start of sheet conveyance is started.
However, it is determined whether or not the fourth set time T ₄ , which is a predetermined time required for the engine unit 200, which is stopped at the time of starting the operation of the external paper feeding device 1, to start its operation, has reached ( Step S108). Then, in step S7, when it is determined that the time T after the start of conveyance reaches the fourth set time T ₄ , the conveyance operation of the external paper feeding device 1 is performed.
The third speed equal to the paper speed V ₃ of the engine unit 200
It is started at the set speed V ₃ (step S109).

In step S106, when the engine unit 200 is not stopped, that is, the engine unit 200
If it is determined that the sheet feeding is in operation (the sheet is being conveyed), the process directly proceeds to step S109, and the conveying operation of the external sheet feeding device 1 is performed by the sheet speed V _{3 of the} engine unit 200.
It starts at the third set speed V ₃ which is the same speed as.

Then, the process thereafter is carried out until the paper reaches the registration roller 21 of the engine unit 200 at the third set speed V ₃ , and then the external paper feeder 1 is stopped. Other processing (step S110) is executed. By repeating the above-described processing, the sheets are sequentially fed from the external paper feeding device 1 to the engine unit 200.

The control timing of the sheet transport control according to the second embodiment described above is as shown in FIG. 7 (a) and 7 (b) are timing charts showing the control timing of the sheet conveyance control according to the second embodiment, and FIG. 7 (a) shows the external sheet feeding when the engine unit 200 is stopped. Device 1
7B shows the control timing of the sheet conveyance speed, and FIG. 7B shows the control timing of the sheet conveyance speed when the engine unit 200 is operating.

Paper is a manual paper feed roller of the engine unit 200.
The engine unit 20 in the state of reaching 212 (T = T ₂ ).
When 0 is stopped, the engine section 200 does not suck the sheet even when the sheet is conveyed by the external sheet feeding device 1. Therefore, as shown in FIG. 7A, the engine section 200 starts its operation. Until [T = T ₄ −T ₂ ], the external paper feeding device 1 is stopped, and at the same time when the operation of the engine unit 200 is started, the operation of the external paper feeding device 1 is started. to convey the sheet at the third set speed V ₃ is equal to the speed and V _3.

On the other hand, when the engine unit 200 is operating in a state where the paper reaches the manual feed roller 212 of the engine unit 200 (T = T ₂ ), the engine unit 200 will continue to operate even if the paper conveyance is continued. As shown in FIG.
Immediately as shown in (b), the paper feeding speed of the external paper feeding device 1 is switched from the second setting speed V ₂ to the third setting speed V ₃ which is equal to the paper speed V ₃ of the engine unit 200. , to convey the sheet at the third set speed V _3.

When the sheet conveyance control as described above is performed, when the engine section 200 is stopped when the conveyed sheet reaches the manual sheet feeding roller 212, the sheet feeding by the external sheet feeding device 1 is performed. Transport is stopped and the engine section 200
If the external sheet feeder 1 is operating, the sheet feeding by the external sheet feeder 1 is executed as it is. Therefore, the sheet feeding by the external sheet feeder 1 is performed at the timing when the engine unit 200 sucks the sheet into the engine section 200. Is done. For this reason, since the waste paper is not conveyed by the external paper feeding device 1, the slack of the paper does not occur and the occurrence of jam is suppressed.

Next, a third embodiment of the present invention will be described. FIG. 8 is a schematic block diagram showing the configuration of a control system in the external paper feeding device 1 and the printer body 2 according to the third embodiment. In FIG. 8, the parts corresponding to those in FIG. The description is omitted.

The controller 100 is switched from a manual paper feed mode using a command and a manual paper feed roller 212 for printing output from a personal computer (not shown) to an external paper feed mode using the external paper feeder 1. Various commands such as a request for changing the paper feeding mode of the paper, a command for selecting the paper feeding bins 10, 10, 10, etc. are input, and based on these commands, the controller 10
0 indicates that the engine unit 200 is supplied with a control signal including a video signal for print output and a command relating to control of the external paper feeding device 1. The engine part 200 is
Operations such as paper conveyance and printing processing are performed based on the control signal, and a status signal indicating an operating state such as operating or stopped is given to the engine unit 200 and a controller.
Drive control of the external sheet feeding device 1 is performed based on a command given from 100.

Further, when the external paper feeding device 1 is attached to the printer main body 2, from the engine portion 200,
A control signal for the drive control is given. The external sheet feeding device 1 is driven based on a control signal given from the engine section 200.

Next, the control operation of the external sheet feeding device 1 and the printer main body 2 of the third embodiment thus constructed will be described. FIG. 9 is a controller 100 according to the third embodiment.
10 is a flowchart showing a processing procedure when a paper feed mode change request command is given, and FIG. 10 is a flowchart showing a processing procedure when a status signal is given from the engine unit 200 in the controller 100 according to the third embodiment. Is.

When the controller 100 is supplied with a command for requesting a change of the paper feed mode, as shown in FIG. 9, whether or not the external paper feed device 1 is attached to the printer body 2 is determined by the external paper feed. The determination is made based on the voltage value of the signal cable connection terminal of the paper device 1 (step S201).

When it is determined in step S201 that the external paper feeding device 1 is not attached, a command indicating the manual paper feeding mode is given to the engine section 200 (step S202).

On the other hand, if it is determined in step S201 that the external paper feeding device 1 is attached, the command indicating the paper feeding bin 10 to be selected selects which paper feeding bin 10, 10, 10 to select. It is determined whether or not there is (step S203). Then, a command for selecting the determined paper feed bin 10 is issued to the engine unit 20.
It is given to 0 (step S204).

Further, when the status signal is given from the engine section 200 in the controller 100, as shown in FIG.
As shown in FIG. 5, it is determined whether or not the requested external sheet feeding device 1 is selected based on the status signal from the engine section 200 (step S301).

When it is determined in step S301 that the requested external sheet feeding device 1 is selected, the controller 100 executes the process as it is, and the same printing sequence as the preset printing sequence is performed when the cassette is fed. Run the sequence. In this case, the engine unit 200 is in the standby state. On the other hand, if it is determined in step S301 that the requested external sheet feeding device 1 is not selected, that is, if the manual sheet feeding mode is set, the external sheet feeding device 1 is selected.
Is regarded as not mounted (step S302), and a predetermined print sequence for the manual paper feed mode is executed.

When the control according to the third embodiment as described above is performed, the engine unit 200 controls the paper feeding of the manual paper feeding unit 210 and the external paper feeding device 1 based on the command given from the controller 100. In order to execute the above, the controller 100 can perform the same control with respect to the paper feeding from the manual paper feeding unit 210 and the paper feeding from the external paper feeding apparatus 1, so that stable paper feeding control can be performed. .

[0052]

As described above in detail, according to the first invention of the present application, when the paper is fed from the external paper feeding device, the feeding speed of the paper is a predetermined low speed for a predetermined time after the start of the feeding. Since the first speed is set, it is possible to stabilize the paper feeding of the external paper feeding device, and the paper is fed between the predetermined time period and the time when the paper reaches the manual feeding section of the printer. Since the conveyance speed of the sheet is the second speed which is a high speed, it is possible to increase the sheet feeding speed of the external sheet feeding device, and after the sheet reaches the manual feeding section, the sheet conveying speed is Since the speed is the third speed that is the same as the speed at which the paper is transported in the paper transport unit, the slack of the paper does not occur, the occurrence of jams is suppressed, and the paper feeding of the external paper feeder can be stabilized.

Further, in the second aspect of the present invention, when the sheet conveying section is stopped when the sheet conveying speed is changed from the second speed to the third speed, the sheet conveying section is stopped. The external paper feeding device is stopped for a predetermined time until the unit starts operating, and then the paper transportation speed is controlled to the third speed, so that the paper transportation to the paper transportation unit is performed at the optimum timing. Therefore, the slack of the paper due to the paper transportation by the external paper feeding device while the paper transportation unit is stopped does not occur,
The occurrence of jams is suppressed, and the paper feeding of the external paper feeding device can be stabilized.

Further, in the third invention of the present application, the control is executed because the engine section executes the control relating to the sheet feeding of the manual sheet feeding section and the external sheet feeding device based on the command given from the control section. Since the unit can control the paper feeding from the external paper feeding device in the same manner as the paper feeding from the manual paper feeding unit in the printer body, the paper feeding of the external paper feeding device can be stabilized. As described above, the present invention has excellent effects.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view showing the configuration of a printer according to the present invention.

FIG. 2 is a schematic block diagram showing a configuration of a control system in a sheet feeding device and a printer main body.

FIG. 3 is a flowchart showing a procedure of sheet conveyance control according to the first embodiment.

FIG. 4 is a schematic path diagram of a sheet transport system for explaining a method of determining each set time in sheet transport control.

FIG. 5 is a timing chart showing a control timing of sheet conveyance control according to the first embodiment.

FIG. 6 is a flowchart showing a procedure of paper transport control according to the second embodiment.

FIG. 7 is a timing chart showing the control timing of paper transport control according to the second embodiment.

FIG. 8 is a schematic block diagram showing a configuration of a control system according to a third embodiment.

FIG. 9 is a flowchart illustrating a processing procedure when a paper feed mode change request command is given to the controller according to the third embodiment.

FIG. 10 is a flowchart showing a processing procedure when a status signal is given from the engine unit in the controller according to the third embodiment.

[Explanation of symbols]

 1 External paper feeding device 2 Printer main body 100 Controller 200 Engine part 210 Manual paper feeding part

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 8, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

In the printer body 2, a manual paper feed port
Inside the 211, a manual paper feed roller 212 and a registration roller that constitutes a part of the paper transport unit 20 in the printer body 2 are provided.
21 is provided, and the sheet inserted from the manual sheet feeding port 211 is conveyed to the registration roller 21 by the manual sheet feeding roller 212, and is further conveyed from the registration roller 21 to a print processing unit (not shown). It is like this.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Change

[Correction content]

[0046] If the command of the paper feed mode change request is given in the controller 100, as shown in FIG. 9, whether the external sheet feeding apparatus 1 is installed in the printer body 2, the engine unit 200 Sent by then
Based on the received status signal (step S2
01).

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0049

[Correction method] Change

[Correction content]

Further, when the status signal is given from the engine section 200 in the controller 100, as shown in FIG.
As shown in (4), it is determined whether or not the requested external sheet feeding device 1 is selected based on the current status signal from the engine unit 200 (step S301).

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Claims (3)

[Claims] 1. A paper transport unit for transporting paper at a predetermined speed in the main body, a manual paper feed unit for manually feeding paper to the paper transport unit in the main body, and a manual paper feed unit. In a printer equipped with an external sheet feeding device which is attached to the outside and conveys a sheet to the sheet conveying section via a manual sheet feeding section, a sheet is fed for a predetermined time after the conveyance from the external sheet feeding apparatus is started. A means for controlling the conveying speed to a first speed which is a predetermined low speed; and a means for controlling the conveying speed of the paper to a predetermined high speed after the elapse of the predetermined time until the paper reaches the manual sheet feeding section. And a means for controlling the conveyance speed of the sheet to a third speed which is the same as the conveyance speed of the sheet in the sheet conveyance section after the sheet reaches the manual feed section. A printer comprising: 2. A paper carrying section for carrying paper at a predetermined speed in the main body section, a manual paper feed section for manually feeding paper into the paper carrying section in the main body section, and a manual paper feed section of the manual paper feed section. In a printer equipped with an external sheet feeding device which is attached to the outside and conveys a sheet to the sheet conveying section via a manual sheet feeding section, a sheet is fed for a predetermined time after the conveyance from the external sheet feeding apparatus is started. A means for controlling the conveying speed to a first speed which is a predetermined low speed; and a means for controlling the conveying speed of the paper to a predetermined high speed after the elapse of the predetermined time until the paper reaches the manual sheet feeding section. A second speed control means, a means for determining whether or not the sheet conveying section is stopped with the sheet reaching the manual sheet feeding section, and a sheet being fed to the manual sheet feeding section. If it is determined that the paper transport unit is stopped when it reaches Means for controlling the paper feeding speed to a third speed that matches the paper feeding speed in the paper feeding section after the external paper feeding device is stopped for a predetermined time, and When it is determined that the sheet transport unit is not stopped when the sheet reaches the section, a means for immediately controlling the sheet transport speed to a third speed that matches the sheet transport speed in the sheet transport unit. A printer comprising: 3. An engine unit, which is a part of the main body unit excluding the control unit, including a control unit for controlling the main body unit and a manual paper feeding unit for manual paper feeding, and the manual paper feeding unit. A printer equipped with an external paper feeding device that is attached and feeds paper through the manual paper feeding unit, the paper feeding indicating the paper feeding from the manual paper feeding unit from the control unit to the engine unit. A command for selecting any one of a paper feeding mode, which is one of a paper feeding mode indicating a paper feeding mode or a paper feeding from the external paper feeding device, is given, and the engine unit is based on the command. A printer characterized by being configured to execute control relating to paper feeding of an external paper feeding device.