JPH0542739A - Journal mechanism - Google Patents

Abstract

PURPOSE:To form a sheet path in paired paper-guide plates from a sheet outlet after recording process to a journal core winding part and automatically wind the sheet around the journal core in the journal mechanism of an autoloading device capable of automatically setting a web. CONSTITUTION:During the automatic setting of a web, a paper guide plate drive motor 36 is driven to close paper guide plates 32, 33 and thereby to form a sheet path. At the same time, the position of a journal core 27 is adjusted using a journal core engagement member 39 and a slip clutch 31 to guide the sheet to a slit 28 in the journal core 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a journal mechanism for a printer or the like which uses roll paper loaded on a cash register or the like, and particularly roll paper is automatically conveyed into a printer along a paper path and automatically transferred to a journal core. The present invention relates to a journal autoloading device that is wound around.

[0002]

2. Description of the Related Art Conventionally, in a printer such as a cash register, there is an auto loading device in which the leading end of roll paper is automatically conveyed into the printer to automatically complete paper setting. When setting paper with such a recording device, load the roll paper into the roll paper storage unit, press the roll paper set key to feed the roll paper, set it in the printer's paper transport route, and then load it into the journal core. In some cases, the operator winds the paper around.

[0003]

However, it is a great burden for the operator that the paper must be wound around the journal core by the operator even though the automatic loading device is used.
In addition, there were problems such as causing troubles due to set mistakes and wasting time.

The present invention has been made to solve the above-mentioned problems, and newly provides a journal mechanism capable of automatically winding a sheet around a journal core during automatic loading.

[0005]

In order to achieve this object, the journal mechanism of the present invention is arranged close to the front and back sides of the paper in order to guide the paper from the paper outlet of the printer to the core of the journal core when setting the roll paper. It is provided with a pair of provided paper guide plates, a paper guide plate moving means for moving the paper guide plates to a position for guiding the paper, and a retracted position retracted from the paper winding margin range of the journal core.

[0006]

When the paper is wound around the journal core at the time of auto-loading by the journal mechanism of the present invention having the above-mentioned structure, the paper guide plate moving means moves the pair of paper guide plates to the guide position, and the paper of the printer. Use the paper path from the outlet to the core of the journal core.

When the roll paper is fed in the above state, the paper ejected from the paper exit of the recording apparatus enters the journal core core through the space between the pair of paper guide plates, and the paper is transferred to the journal core by the rotation of the journal core. Wrapped around.

After that, the pair of paper guide plates are retracted by the paper guide plate moving means out of the range of the paper winding allowance of the journal core. Normally, the paper is wound around the journal core during printing, but since the pair of paper guide plates are retracted outside the paper winding margin range of the journal core, this does not hinder the winding of the recording paper.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show a journal printer of an electronic cash register (ECR) having an auto-loading function utilizing the journal mechanism of the present invention.

The journal printer of the embodiment is provided with a roll paper holder 1 formed into a container for storing roll paper, and the roll paper holder 1 has a bottom portion for holding the roll paper during printing. A paper rake roller 2 that is rotatably received, a belt 3 whose linear portion contacts the roll paper when setting the roll paper, and a drive pulley 4 that drives the belt 3.
And a driven pulley 5 for applying tension to the belt 3.
A belt drive motor 6 that is connected to the drive pulley 4 by a gear train to drive the belt 3; and a belt frame that is fixed to the drive pulley 4 and the driven pulley 5 and is rotatable about the axis of the drive pulley 4. 7, a belt lift crank 8 that engages with the belt frame 7 to reciprocate the belt 3 between a position where it comes into contact with the roll paper and a position where it separates from the roll paper, and a belt train connected to the belt lift crank 8 to move the belt 3 up and down A belt lift drive motor 9 and a belt lift switch 10 formed so as to be turned on when the belt 3 is in the position for setting the roll paper are provided.

At the front lower part of the roll paper holder 1, a paper insertion port 11-a of the printer and a paper insertion port 11 are opened.
-A, a separator 12 that separates the roll paper and the front end of the roll paper from each other, a reflective photosensor 18 that is provided near the paper insertion opening 11-a at the bottom of the roll paper holder 1 so as to face the roll paper The paper feed roller 14 of the printer main body that feeds the paper, the paper feed drive motor 15 that is connected to the paper feed roller 14 by a gear train and drives the paper feed roller, and the paper feed roller 14 that biases the paper feed roller 14. A pair of pinch rollers 16 for feeding the paper, a paper guide 11 formed by a pair of plate-shaped members between the paper insertion port 11-a and the paper feed roller 14, and a paper insertion port in the middle of the paper guide 11. A paper detection photosensor 19 provided near 11-a is provided.

Further, in front of the roll paper, a carriage 20 which is perpendicular to the paper feed direction and can reciprocate along the surface of the paper, and an elongated rod-shaped member mounted on the carriage 20 are struck toward the paper. And the platen 2 provided to face the impact head 21 over the moving range of the carriage 20.
2, impact head 21 and printer paper outlet 25
A paper guide 26 formed of a pair of plate-shaped members between
And are provided.

Above the roll paper, the journal core 27 serving as a core for winding the printed paper, and the slit 2 provided in the winding core portion 41 of the journal core 27.
8, a slit opening 29 formed in a taper shape for guiding a sheet to the slit 28, and a journal core 27.
The take-up belt 30 that transmits the driving force of the paper feed drive motor 15 for driving the paper feeding drive motor 15, and the journal core 27, which is provided in the middle of the drive connection between the take-up belt 30 and the take-up belt 30, generates a torque larger than necessary. A slip clutch 31 that idles the take-up drive motor 30 when mounted.
And are provided.

The sheet fed from the sheet outlet 25 of the printer is provided with the opening 29 of the slit 28 of the journal core 27.
Upper paper guide plate 32, which is a pair of paper guide plates of this embodiment, each of which is formed of a pair of upper and lower plate-shaped members so as to be rotatable around two axes near the paper outlet 25 of the printer. And a lower paper guide plate 33 is provided. The upper paper guide plate 32 and the lower paper guide plate 3
An upper paper guide plate drive gear 34 and a lower paper guide plate drive gear 35, which are paper guide plate moving means of the present embodiment, fixed to and connected to each other are provided.

The upper paper guide plate drive gear 34 is also used.
Also, the upper paper guide plate 32 and the lower paper guide plate 33 are connected to the lower paper guide plate drive gear 35 by a gear train.
A paper guide plate drive motor 36 for driving the opening and closing of the upper paper guide plate 32 and the upper paper guide plate 32 so as to be rotatable about the same axis as the upper paper guide plate 32 and the paper guide plates 32 and 33 are closed to form a paper path journal. Journal core locking for engaging the locking groove 38 of the flange 37 of the core 27 to align the phase of the opening 29 of the slit 28 of the journal core 27 with the position of the paper passage formed by the paper guide plates 32 and 33. The member 39 and the upper paper guide plate 3
A journal core locking spring 40 is provided between the journal core locking member 2 and the journal core locking member 39 to bias the journal core locking member 39 in the same phase as the upper paper guide plate 32.

A procedure for automatically setting roll paper in the journal printer having the above-mentioned structure will be described below.

(1) Insert the roll paper into the roll paper holder 1 and press the roll paper set key set in the electronic cash register (ECR). In this embodiment, the roll paper setting operation of the printer is started by pressing the key by the operator, but the setting operation may be started by a change in the signal of the near-end sensor of the roll paper.

(2) The belt lift drive motor 9 is started. The belt lift crank 8 is rotated so that the belt lift crank 8 lifts the belt lift frame 7 from below, so that the belt frame 7 is rotated around the drive pulley 4 axis fulcrum so that the belt 3 comes into contact with the roll paper. lift. When the signal of the belt lift switch changes from OFF to ON, the belt 3 is at the roll paper setting position, so the belt lift drive motor 9 is immediately stopped to keep the belt 3 at this roll paper setting position. At this time, since the linear portion of the belt 3 comes into contact with the roll paper obliquely from the lower rear side toward the paper insertion port 11-a of the printer, the roll paper is not supported as shown in FIGS. 1 and 2. Even when the diameter is large, the outer diameter portion comes into contact with the belt 3 and the separator 12, and stable roll paper feeding is possible.

(3) The paper guide plate drive motor 36 is started and stopped after a certain period of time. As a result, the paper guide plates 32 and 33 are closed and the two paper guide plates
A paper passage is formed from the paper outlet 25 of the printer to the opening 29 of the slit 28 of the journal core 27. During the driving time of the paper guide plate drive motor 36, the stoppers provided on the paper guide plates 32 and 33 come into contact with each other, and the paper guide plate drive motor stops in the motor lock state.
Then, the drive signal is turned off after the above-mentioned certain time.

(4) The paper feed drive motor 15 is driven. In (3), since the upper paper guide plate 32 is closed, the journal core locking member 39 is
7 is engaged with the flange 37. If the paper feed drive motor 15 is driven in this state, the journal core 27 is rotated until the engagement groove portion 38 of the flange 37 and the journal core engagement member 39 are engaged by the drive transmission of the winding belt 30, and both are engaged. After that, since the journal core locking member 39 serves as a stopper, the journal core 27 does not rotate,
Due to the action of the slip clutch 31, only the paper feed drive motor 15 idles. With this, Journal Core 27
The opening 29 of the slit 28 is aligned with the position of the paper passage formed by the paper guide plates 32 and 33. After adjusting the phase of the journal core 27, the paper feed drive motor 15
To stop.

(5) The belt drive motor 6 is driven to continuously feed the roll paper in a direction reverse to the paper feed direction at a constant speed. At this time, at the same time, the output signal of the reflection type photo sensor 18 provided at the bottom of the roll paper holder 1 is monitored.

(6) When the front end of the roll paper passes the separator 12 and reaches the front of the paper insertion port 11-a due to the reverse rotation of the roll paper, the front end of the roll paper loses the support of the separator 12 and is separated from the roll portion. Since it approaches the reflective photosensor 18, the detection distance between the reflective photosensor 18 and the roll paper changes. As a result, the output signal of the reflective photosensor 18 changes. Based on this signal change, it is determined that the front end of the roll paper is in front of the paper insertion opening 11-a.

(7) When the tip of the roll paper is confirmed to be in front of the paper insertion port 11-a by the signal of the reflection type photo sensor 18, the belt drive motor 6 and the paper feed drive motor 15 are driven to drive the belt 3 The paper feed roller 14 is continuously fed in the paper feed direction. As a result, the roll paper is conveyed into the printer and is caught between the paper feed roller 14 and the pinch roller 16 which are the main paper feed means of the printer. In the embodiment, since the stepping motor is used as the belt drive motor 6, the photo sensor 19 detects the leading edge of the roll paper, and then the belt drive motor 6 is fed by a certain number of steps, so that the leading edge of the roll paper is fed. It is determined that the roller 14 has been reached.

(8) The leading end of the roll paper is the paper feed roller 14
When the position is reached, the belt lift drive motor 9 is driven to lower the belt 3 to separate it from the roll paper. When the belt lift crank 8 rotates further than (2), it comes off from the belt lift crank 8 and the belt frame 7,
The belt frame 7 is lowered by its own weight, and the belt 3 is separated from the roll paper. Belt lift switch signal is ON
When it changes from OFF to OFF, the belt 3 is in the printing position separated from the roll paper, so the belt lift drive motor 9 is immediately stopped and the belt 3 is kept in the printing position. At the same time, the belt drive motor 3 is stopped. As a result, the paper feeding means of the printer is only the paper feeding roller 14 connected to the paper feeding drive motor 15. Since the roll paper separated from the belt 3 is received by the rotatable paper rake roller 2, the roll paper can be lightly rotated with respect to the feed of the paper feed roller 14.

(9) Further, the paper feed drive motor 15 is driven to feed the paper feed roller 14, and the roll paper is passed between the print head 21 and the platen 22 and conveyed to the paper outlet 25 of the printer. The roll paper that has passed through the paper outlet 25 passes between the two paper guide plates 32 and 33, and is slit 2 from the opening 29 of the slit 28 of the journal core 27.
Enter 8. After the leading edge of the roll paper has passed through the slit 28,
The paper is sufficiently fed to stop the paper feed drive motor 15.

(10) The paper guide plate drive motor 36 is driven in the reverse rotation to that in the case of (3), and stopped after a fixed time. This allows the paper core 25 to exit from the paper exit 25.
The two paper guide plates 32 and 33 forming the paper path to the opening 29 of the slit 28 are opened vertically and retracted from the paper winding margin range of the journal core 27. During the drive time of the paper guide plate drive motor 36, the paper guide plate 32
The stoppers 33 and 33 hit each other and the paper guide plate drive motor is stopped in the motor lock state, and then the drive signal is turned off after the fixed time. By this operation, the engagement between the journal core locking member 39 and the locking groove portion 38 of the journal core 27 is released at the same time, and the journal core 27 becomes rotatable.

(11) The paper feed drive motor 15 is driven and stopped after a certain period of time. As a result, the journal core 27 is rotated at the same time as the paper is fed, and the paper is wound around the journal core 27.

As described above, the automatic setting of roll paper, that is, the automatic loading is completed by the operations (1) to (11).

The journal mechanism of the present invention is not related to this embodiment. For example, in this embodiment, a DC motor is used to drive the opening / closing operation of the paper guide plates 32 and 33. You may go.

[0031]

As is apparent from the above description, the journal mechanism of the present invention has a pair of paper guide plates for guiding the recording paper from the paper exit after recording to the core of the journal core, and therefore the journal of roll paper. Paper can be set on the core automatically, and during paper winding, the pair of paper guide plates retracts from the paper winding margin range of the journal core, so that smooth journal winding can be performed.

[Brief description of drawings]

FIG. 1 is an overall view of a journal printer of an embodiment when a roll paper is inserted.

FIG. 2 is an overall view of the journal printer of the embodiment and is a diagram showing a state during printing.

[Explanation of symbols]

 1 Roll Paper Holder 21 Impact Head 25 Paper Outlet 26 Paper Guide 27 Journal Core 28 Slit of Journal Core 27 29 Opening of slit 28 32 Upper Paper Guide Plate 33 Lower Paper Guide Plate 34 Upper Paper Guide Plate Drive Gear 35 Lower Paper Guide plate drive gear 36 Paper guide plate drive motor 41 Core of journal core 27

Claims (1)

[Claims] 1. A journal mechanism of a printer or the like configured to roll the roll paper fed from a roll paper storage unit and then wind the roll paper around a journal core, when the roll paper is set. A pair of paper guide plates provided close to the front and back sides of the paper to guide the paper to the core of the core, a position where the paper guide plate guides the paper, and a retracted range from the paper winding range of the journal core. And a paper guide plate moving means for moving the paper guide plate to the retracted position.