JP3104797B2 - Loading mechanism for rolled recording paper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for auto-loading a recording sheet in an image forming apparatus using a round recording sheet.

[0002]

2. Description of the Related Art Conventionally, in a facsimile machine,
When the recording paper runs out, the display flashes, so the upper lid is opened and the roll-shaped recording paper is loaded. At this time, remove the used recording paper, gently insert a new roll of recording paper, pull out the leading end of the recording paper by a predetermined length, and pass the leading end of the recording paper under the head according to the guidelines. To insert. Then, close and lock the upper lid.
When the top lid is closed, a paper cycle is automatically performed,
One piece of paper comes out (for example, “Rico-RIFAX11
2 Instruction manual ”). FIG. 2 is a sectional structural view showing a conventional roll-shaped recording paper loading mechanism. FIG.
, 3 is a roll-shaped recording paper, 4 is a transport roller, 6
Is a platen roller, 7 is a thermal head, and 10 is a recording paper sensor. In the conventional mechanism, the proten
A recording paper sensor 10 is mounted between the transport roller 6 and the transport roller 4. Therefore, with this mechanism, the recording paper 3 cannot be automatically conveyed unless the leading end of the set recording paper 3 is pulled out and returned to the position of the recording paper sensor 10. However, this sometimes caused a jam.

[0003]

As described above, in a conventional apparatus for forming an image using a rolled recording paper, for example, a facsimile apparatus, a copying machine, a printer, or the like, the leading edge of the recording paper is set when the recording paper is set. Work such as passing through a cutter or setting between a thermal head and a platen roller was required. In order to save labor, it is desirable that loading be performed automatically without performing such operations. An object of the present invention is to solve such a conventional problem, eliminate the work of pulling out the leading end of the recording paper to a predetermined position, and set the roll, which can automatically load the recording paper at an arbitrary position. and to provide a loading mechanism Jo recording paper.

[0004]

To achieve the above object, according to an aspect of the loading mechanism of the rolled recording sheet according to the present invention, the holder and the image on the rolled recording paper to set the B Lumpur shaped recording paper (3) Conveying means (conveying roller 4) for conveying the rolled recording paper between the thermal head (7) to be formed, and cutter means (8, 9) and conveying means between the thermal head (7) and the discharging means (discharging roller 11). A recording paper sensor (10) for detecting the presence or absence of recording paper ; and
The upper housing (1) and the lower housing (2) are connected to both hinge portions (1).
3, 14) and can be opened and closed by the transport means (4).
Transport roller (4) and pressing roller (5), thermal
Head (7) and platen (6) above the cutter means
Part cutter (9) and lower cutter (8), discharge roller
(11) and the pressing roller (12) are provided in the upper housing.
Configuration that separates when (1) and opening and closing of lower housing (2)
It is characterized that you have become.

[0005]

According to the present invention, a recording paper for setting a recording paper in a facsimile machine or a copier is transported across a transport path between a holder and an image forming section (where a thermal head is installed). A roller and a pressure roller are set up and down, and a cutter which can be separated up and down and a recording paper which can be separated up and down with a conveyance path between the image forming section and the discharge roller interposed therebetween. A sensor for detecting the presence or absence is arranged. When the sensor detects that there is no recording paper, it drives the transport roller to transport the leading end to the position of the sensor, and stops the transport roller when the sensor detects the recording paper. And cutter
To cut off the tip, and drive the discharge roller to discharge only the tip. As a result, autoloading can be performed only by placing the leading end of the roll-shaped recording paper at an arbitrary position.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional structural view of a roll-shaped recording paper loading mechanism according to an embodiment of the present invention. In FIG. 1, 1 is an upper casing, 2 is a lower casing, 3 is a roll-shaped recording paper, 4 is a transport roller, 5 is a pressure roller, 6 is a platen roller, and 7 is a support roller. A mulling head, 8 is a lower part of the cutter, 9 is an upper part of the cutter, 10 is a recording paper sensor, 11
Is a discharge roller, 12 is a pressure roller, 13 and 14 are hinge portions, 15 is a recording paper leading edge setting position, and 16 and 17 are second and third recording paper leading edge setting positions. . FIG.
, The upper housing 1 and the lower housing 2
The entire structure is configured to be openable and closable up and down by the hinge portion 14. When setting the roll-shaped recording paper 3 in the recording paper holder, the upper housing 1 and the lower housing 2 are opened up and down before setting. A transport roller 4 is mounted on the lower housing 1 downstream of the recording paper holder 18, and a pressure roller 5 is mounted on the upper housing 1 so as to be in contact with the transport roller 4. The mounting positions of the transport roller 4 and the pressure roller 5 are as follows.
It can be upside down. A platen roller 6 attached to the lower housing 2 is located downstream of the platen roller 6.
And an image forming unit 15 including a thermal head 7 attached to the upper housing 1 side. Next, the cutter-lower part 8
And the cutter-the upper part 9 is in the lower housing 2 and the recording paper sensor-
10 are attached to the lower housing 2 respectively. Finally, a discharge roller 11 and a pressure roller 12 are attached to the upper housing 1 so as to be in contact with the lower housing 2.
As described above, the upper housing 1 is opened together with the pressure roller 5, the thermal head 7, and the pressure roller 12 by the hinge portions 13 to 14.

In the above structure, the upper and lower cutters
8 and 9 were joined and both were attached to the lower housing 2. As another embodiment, the cutter lower part 8 and the cutter upper part 9 can be configured to be separable. In this case, the lower cutter 8 is attached to the lower housing 2, and the upper cutter 9 is attached to the upper housing 1, so that the upper cutter 9 opens together with the upper housing 1. The cutting of the cutters 8 and 9 is performed between the upper part 9 and the lower part 8 when the upper housing 1 is closed.

Next, the operation of loading the rolled recording paper 3 into the loading mechanism of FIG. 1 will be described. First,
The upper housing 1 is opened upward, the roll-shaped recording paper 3 is set in the recording paper holder, and the leading end is set at the recording paper leading end setting position 1.
5 and the upper housing 1 is closed. At this time, the recording paper sensor 10 detects "absence", thereby driving the transport roller-4 and the platen roller 6, so that the recording paper is transported by the transport roller-4 and the platen roller. The recording paper sensor 10 detects that the recording paper sensor 10 is "present" when the paper reaches the recording paper sensor 10 at the leading end. At that time, the transport roller-4 and the platen roller 6 stop, and the cutter
8 and 9 cut the recording paper 3. Next, the discharge roller-1
1 and the rotation of the pressure roller 12, the cut recording paper is discharged.

Next, in the case of another embodiment, that is, a cutter
An operation in the case where the lower portion 8 and the cutter-upper portion 9 are configured to be separable will be described. First, after the upper housing 1 is opened upward, the roll-shaped recording paper 3 is set in the recording paper holder, and the leading end thereof is set at the recording paper leading end setting position 15, the second and third positions.
At one of the recording paper tip setting positions 16 and 17 of
Set the recording paper. The leading edge of the recording paper is set at position 15
6, the leading end reaches the recording paper sensor 10 by driving the transport roller-4 and the platen roller 6 in the same manner as in the above-described embodiment, and the recording paper sensor Is detected, the transport roller-4 and the platen roller 6 stop. And cutters 8, 9
Cut the leading edge of the recording paper with. On the other hand, when the leading end of the recording paper is at the set position 17, the recording paper sensor 10 detects "presence", so that neither the transport roller 4 nor the platen roller 6 is driven. Cutter-8,
9 is driven, and the leading end of the recording paper is cut. Then, the recording paper cut by the discharge roller 11 and the pressure roller 12 is discharged. In addition, upper cutter-9
Since the upper cutter 1 and the lower cutter 8 are vertically separated from each other, when the upper housing 1 is opened, the leading end of the roll-shaped recording paper 3 can be pulled out and placed to the front of the cutters 8 and 9. If the cutters 8 and 9 cannot be separated when the upper housing 1 is opened, it is impossible to place the leading end of the recording paper ahead of the cutters 8 and 9.

As described above, in the present embodiment, the recording paper is autoloaded by merely placing the leading end of the roll-shaped recording paper in the range of the recording paper leading end setting position 15, and the leading end of the recording paper is cut. The roll-shaped recording paper 3 can be set without any trouble such as passing through the paper. Further, in the case of the second embodiment, the range in which the leading end of the roll-shaped recording paper can be placed is further widened, and the leading end of the recording paper can be placed in the range of 15, 16, and 17. , Operation becomes easy. In the case of using a rolled recording sheet of plain paper, a printing process such as an ink sheet is required in the image forming portion (the portion of the thermal head 7 and the platen roller 6) in FIG. Since the present invention is concerned only with the feeding, the description is omitted.

[0011]

As described above, according to the present invention,
The roll is automatically loaded simply by placing the leading end of the roll-shaped recording paper at an arbitrary position.

[0012]

[Brief description of the drawings]

FIG. 1 shows a roll of rolled recording paper showing one embodiment of the present invention.
FIG. 3 is a cross-sectional structural view of a loading mechanism.

FIG. 2 is a sectional structural view of a conventional roll-shaped recording paper loading mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper housing 2 Lower housing 3 Roll-shaped recording paper 4 Conveying roller 5 Pressure roller 6 Platen roller 7 Thermal head 8, 9 cutter 10 Recording paper sensor 11 Discharge roller -12 Pressure Roller 13,14 Hinge 15,16,17 Recording Paper Tip Set Position

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 19/12 B41J 17/22 B65H 16/02 B65H 19/20 B65H 43/02

Claims (1)

(57) [Claims] 1. A roll recording paper loading mechanism, comprising: a holder for setting the roll recording paper; and a transport unit for transporting the roll recording paper between a thermal head for forming an image on the roll recording paper. A cutter unit and a recording paper sensor for detecting the presence or absence of the recording paper between the thermal head and the discharging unit , and an upper housing and a lower housing.
The body can be opened and closed by both hinge portions,
Transport roller and pressing roller, and the thermal head and plastic
Ten, upper cutter and lower cutter of the above cutter means
-, The discharge roller and the pressing roller are
Rolled recording paper loading mechanism characterized that you are configured to be separated along with the opening and closing of the housing.