JPH04348968A - Recording paper carrying device for printer - Google Patents

Abstract

PURPOSE:To improve the operatability at the time of recording paper setting, and prevent recording paper jamming due to erroneous setting from happening. CONSTITUTION:For the title device, a first recording paper carrying means (11) which is arranged at an upstream side than a print unit (2) on the recording paper carrying path; a second recording paper carrying means (21) which is arranged at a downstream side than the print unit (2) on the recording paper carrying path; a recording paper introducing unit (31) which is arranged between the print unit (2) and the second recording paper carrying means (21) and is openable/closable, and can introduce a recording paper which has passed the print unit (2) to the second recording paper carrying means (21) when it is opened; and a driving control means (41) which opens the recording paper introducing unit in response to a specified signal from the first recording paper carrying means (11) and closes it after a specified period of time has passed are provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper conveying device for a printer. In particular, the present invention relates to a paper conveying device suitable for application to ECR/POS printers.

0002

2. Description of the Related Art FIGS. 5 and 6 show the schematic structure of a conventional printer.

In these figures, 2 is a printing section (platen 3, print head 4), 11A is a first paper conveyance means, 2
1A is a second paper conveying means.

The first paper conveying means 11A is a means for feeding the paper P to the printing section 2, and includes a paper guide 12, a feed roller 13, a pinch roller 14, a paper set lever 15, and a paper detection switch. It is composed of 19 mag. The feed roller 13 is configured to be rotated in the direction of the arrow by a drive mechanism (not shown) when the paper detection switch 19 is turned on. Further, the pinch roller 14 is rotatably supported by a paper set lever 15, and when the lever 15 is rotated, the feed roller 14 is rotated.
It is configured such that it comes into contact with and separates from.

The second paper conveying means 21A is a means for conveying the paper discharged from the printing section 2 in a predetermined direction, and is composed of a paper guide 22, a feed roller 23, a pinch roller 24, a pinch roller block 25, etc. has been done. The feed roller 23 is configured to be rotated in the direction of the arrow by a drive mechanism (not shown). Further, the pinch roller 24 is rotatably supported by a pinch roller block 25, and is configured to come into contact with and be separated from the feed roller 23 by rotating the block 25. Note that the pinch roller block 25 is generally configured to be opened and closed in conjunction with the paper set lever 15.

In the printer described above, in order to set the paper P, first the paper set lever 15 is opened and the pinch roller 14 is separated from the feed roller 13. Next, insert the leading end of the paper P into the paper guide 12. In this state, when the paper set lever 15 is rotated and the paper P is pressed against the feed roller 13 by the pinch roller 14, the paper detection sensor 19 is turned on and the feed roller 13 is rotated in the direction of the arrow by the drive mechanism, and the paper P is pressed against the feed roller 13 by the pinch roller 14. Paper P is pinched and conveyed by both rollers 13 and 14. In this way, the paper P is fed to the printing unit 2 and printed, but when the pinch roller block 25 is in the closed state (that is, the pinch roller 24 is in pressure contact with the feed roller 23), the paper P is Therefore, the pinch roller block 25 is manually opened, the paper is manually inserted into the second paper transport means 21A, and the block 25 is closed to complete the paper setting.

[0007]

By the way, in the above paper conveyance device, when setting paper, the paper P is moved from the first paper conveyance means 11 by rotating the paper set lever 15 or the like.
At the same time, it is necessary to rotate the pinch roller block 25 and manually insert the paper P that has passed through the printing section 2 into the second paper transport means 21A, which makes the setting operation complicated and can lead to paper setting errors. Paper jams may also occur.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, it is an object of the present invention to provide a paper conveyance device for a printer that can improve operability when setting paper and prevent paper jams from occurring due to mistakes in paper setting.

[0009]

[Means for Solving the Problems] The present invention provides a first sheet conveying means disposed upstream of the printing section for conveying the paper, a second sheet conveying means disposed downstream of the printing section for conveying the paper,
a paper introducing section that is disposed between the printing section and the second paper transport means and is openable and closable so that when opened, the paper that has passed through the printing section can be introduced into the second paper transport means; The present invention is characterized in that a drive control means is provided which opens the paper introduction section in response to a predetermined signal from the first paper transport means and closes the paper introduction section after a predetermined period of time has elapsed.

0010

[Operation] In the present invention, when paper is set, the paper is inserted from the first paper transport means and fed to the printing section. At this time, the paper introduction member is opened in response to a predetermined signal from the first paper transport means. Therefore, the paper that has passed through the printing section is introduced into the second paper transport means by the paper introducing section and is transported. Then, the paper introducing section is closed after a predetermined period of time has elapsed after being opened.

[0011] Once the paper has been set in this way, the paper can be smoothly transported by driving the first and second paper transport means.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained based on the drawings.

The paper conveyance device of the printer according to this embodiment is configured to be able to convey receipt paper and journal paper, and as shown in FIGS. 1 and 2, first paper conveyance means 11 and second paper conveyance means are provided. 21, a paper introduction section (31), and a drive control means 41, which are the characteristic parts of this apparatus.

Components that are the same as those shown in FIGS. 5 and 6 are designated by the same reference numerals, and their explanations will be omitted or simplified.

Here, the paper introducing section (31) is connected to the printing section 2.
and the second paper transport means 21, and is configured to be openable and closable so that when opened, the paper that has passed through the printing section 2 can be introduced into the second paper transport means 21. In this embodiment, the paper introduction section is a paper introduction member 3 for journals and receipts attached to the pinch roller shaft 26.
It is formed from 1A and 31B. Paper introduction member 31A
, 31B, a paper guide section 32 is formed on the printing section 2 side, as shown in FIG. 3, and an engaging section 33 is provided on the opposite side.

It should be noted that the tip of the print head 4 has a . A paper guide 5 for guiding paper in the printing section 2 is attached.

The drive control means 41 also controls the sheet introduction member 31A in response to a predetermined signal from the first sheet conveyance means 11 side.
, 31B and closes them after a predetermined period of time has elapsed. In this embodiment, the drive control means 41 includes a main body frame 42, a slider 43, a solenoid 45, a spring 46, a stopper 47, and a control means (not shown), as shown in FIG.

Here, the main body frame 42 is disposed along the paper guide 22, and the main body frame 42 has pinch rollers 24, 2 for receipts and journals.
4 and paper introduction members 31A and 31B are attached. Further, a slider 43 is provided on the main body frame 42 so as to be slidable along the paper guide 22 in the directions of arrows B and C. A solenoid 45 for driving the slider 43 is connected to the slider 43 . The spring 46 urges the slider 43 in a direction away from the pinch roller 24. Further, the stopper 47 is a means for regulating the amount of movement of the slider 43. Note that the pinch roller shaft 26 is biased in the direction of arrow A by a toggle spring 46.

The control means also controls the first paper conveyance means 11.
When the paper detection switch 19 on the side is turned on, the solenoid 45 is driven, and after a predetermined period of time, the solenoid 45 is activated.
This is a means for stopping the drive of the motor. In this embodiment, the control means is formed using a part of the function of a control device (not shown) that drives and controls the entire conveying device.

Next, the operation will be explained. For example, in order to set a receipt paper P in a predetermined position, when the leading edge of the paper is inserted into the paper guide 12 on the first paper transport means 11 side, the paper detection sensor 19 on the receipt side is turned on and the feed roller 13 rotates in the direction of the arrow. be done. As a result, the paper P is conveyed while being held between the feed roller 13 and the pinch roller 14 and fed to the printing section 2 . At this time, the control means
In response to the paper detection sensor 19 being turned on, the solenoid 45 is driven for a predetermined period of time. Then, the slider 43 becomes
It is slid in the direction of arrow C by the solenoid 45 and presses the paper introduction member 31B via the engaging portions 44 and 33. As a result, the paper introduction member 31B is rotated in the direction of arrow D and opened. Therefore, the paper that has passed through the printing section 2 is introduced to the second paper transport means 21 side by the paper introducing member 31B. At this time, when the paper detection sensor 19 is turned on, the print head 4 is moved to a position aligned with the paper introduction member 31B and guides the paper in the printing section 2. In this way, when the paper P is set, the solenoid 45
is stopped and the paper introduction member 31B is closed.

Journal paper P can be set using the same procedure. In this case, when the paper detection sensor 19 on the journal side is turned on, the print head 4 is moved to a position aligned with the paper introducing member 31A and guides the paper in the printing section 2.

[0022] Once the paper is set in this way, by driving the first and second paper transport means 11, 21 and the printing section 2, the paper can be smoothly transported and printing operations can be performed.

In the above embodiment, the pinch roller 14 of the first paper conveying means 11 is always pressed against the feed roller 13, but the pinch roller 14 of the first paper conveyance means 11 may be brought into contact with and separated from the feed roller 13 by using a conventional paper set lever 15. In such a case,
The paper detection sensor 19 is configured to detect paper by rotating the paper set lever 15. Therefore, by rotating the paper set lever 15, the paper detection sensor 1
9 is turned on, the control means receives this and drives the solenoid 45 for a predetermined period of time to open the paper introducing members 31A and 31B for a predetermined period of time.

[0024]

Effects of the Invention According to the present invention, the first paper transport means disposed upstream of the paper transport from the printing section, the second paper transport means disposed downstream of the paper transport from the marking/printing section, and the printing section. and the second paper transport means, a paper introduction part which is openable and closable and can introduce the paper that has passed through the printing part into the second paper transport means when opened, and a paper introduction part on the side of the first paper transport means. The drive control means opens the paper introduction section in response to a predetermined signal from the paper feeder and closes it after a predetermined period of time has elapsed.
It is possible to improve the operability when setting paper and to prevent paper jams due to setting errors.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a perspective view showing essential parts of one embodiment.

FIG. 3 is a side view showing essential parts of one embodiment.

FIG. 4 is a diagram for explaining the paper introduction operation of the paper introduction member of one embodiment.

FIG. 5 is a diagram showing a conventional paper conveyance device.

FIG. 6 is a diagram for explaining the introduction of paper into a second paper transport means in a conventional paper transport device.

[Explanation of symbols]

2 Printing section 11 First paper transport means 21 Second paper transport means 31A Paper introduction member (paper introduction part) 31B Paper introduction member (paper introduction part) 41 Drive control means

Claims (1)

[Claims] 1. A first paper transport means disposed upstream of paper transport from the printing section, a second paper transport means disposed downstream of the paper transport from the printing section, and a first paper transport means arranged between the printing section and the second paper transport. a paper introduction section which is disposed between the means and is openable and closable so that when opened, the paper that has passed through the printing section can be introduced into the second paper transport means; A paper conveying device for a printer, comprising: drive control means for opening the paper introduction section in response to a predetermined signal and closing the paper introduction section after a predetermined period of time has elapsed.