JPH04140167A - Recording paper-cutting mechanism of picture recording apparatus - Google Patents

Abstract

PURPOSE:To prevent the damage of a cutting edge part and to enable satisfactorily cutting recording paper by moving the cutting edge part of a cutter, which moves while being guided by the guide face of a rail member, in the direction intersecting to a cutting direction. CONSTITUTION:A guide face 72 inclining from one end side toward the other end side is formed in a rail member 74 and a cutter 78 guided by this guide face 72 moves simultaneously in the directions of the arrows X and Z. Therefore, because the cutting edge part 76 of the cutter 78 cuts a recording paper 20 as it is displaced in the direction of the arrow Z, the damage of the cutting edge part 76 can be prevented effectively while the recording paper 20 is not always cut by the same part of the cutting edge part 76. At the time of cutting by the cutter 78, further, both sides of the cutting part of the recording paper 20 are biased and held by rollers 80a, 80b so that the recording paper 20 can be cut accurately and surely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a recording paper cutting mechanism of an image recording apparatus for cutting recording paper into a predetermined length after image recording is completed.

[Prior Art] An image recording device usually accommodates a roll of recording paper such as thermal paper or thermal transfer paper, and this roll of recording paper is used to record a desired visible image by a recording unit equipped with a thermal head, for example. After being recorded, the recording paper is discharged to the outside and cut into a predetermined length via a recording paper cutting mechanism.

There are automatic types and manual types of this recording paper cutting mechanism.The manual type recording paper cutting mechanism cuts the recording paper by moving a cutter along a direction that intersects with the conveying direction of the recording paper. work is being done.

[Problems to be Solved by the Invention] However, in the above-mentioned prior art, when the cutter is moved in a direction intersecting the conveying direction of the recording paper, the recording paper is always cut by the same cutting blade, so this problem occurs. This will result in significant damage to the cutting edge. As a result, the cutter is more likely to have cutting defects, and the cutter must be replaced relatively frequently, which complicates the work and increases costs.

The present invention has been made in view of this type of problem, and provides a recording paper cutting mechanism for an image recording apparatus that can improve the durability of a cutter with a simple configuration and perform efficient cutting work. The purpose is to

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention includes a guide member arranged along a direction intersecting the conveying direction of recording paper and inclined from one end side to the other end side. , comprising: a cutter that is guided by the guide member and cuts the recording paper while moving a cutting blade in a direction crossing the cutting direction; and a pressing member that holds the recording paper during cutting by the cutter. shall be.

[Function] In the recording paper cutting mechanism of the image recording apparatus according to the present invention configured as described above, when the recording paper is conveyed to a predetermined length after image recording is completed, the recording paper is cut along the direction intersecting the conveyance direction. A cutter is moved along a guide member disposed at a position where the recording paper is cut. At this time, the guide member is formed to be inclined from one end side to the other end side with respect to the cutting direction, and the cutting edge of the cutter that moves while being guided by the guide member moves in a direction intersecting the cutting direction. Move to. Therefore, a part of the cutting edge is not always in contact with the recording paper, and the durability of the cutter can be improved.

[Example] A recording paper cutting mechanism of an image recording apparatus according to the present invention will be described in detail below by giving an example and referring to the attached drawings.

In FIGS. 2 to 4, reference numeral 10 indicates an image recording apparatus incorporating a recording paper cutting mechanism according to this embodiment.

This recording device 10 employs a so-called Talamusiel structure consisting of a lower cover member 12 and an upper cover member 14 that is attached to the lower cover member 12 via a fulcrum 13 so as to be openable and closable. A reading unit 18 reads the information carried on the original 16 while horizontally conveying the original 16 on the upper cover member 14, and a recording unit enlarges the read information and reproduces it on the recording paper 20. 22, in which the reading unit 8 and the recording unit 22 are arranged above and below, and the direction of conveyance of the original to be read 16 (direction of arrow X)
and the conveyance direction (arrow Y direction) of the recording paper 20 intersect with each other.

The upper cover member 14 is provided with a read original placement area 24 , and an end portion of the read original 16 placed in this read original placement area 24 enters into the scanner cover 26 .

As shown in FIG. 3, inside this scanner cover 26,
A pair of rollers 28 and 30, which constitute the sub-scanning means and are rotationally driven by a rotational drive source 27, are arranged with a predetermined distance apart, and the reading section 18 is housed below the pair of rollers 28, 30.

The reading section 18 includes light sources 32a and 32b for irradiating illumination light onto the information surface of the original document 16 to be read.
a and 32b are in the sub-scanning direction (arrow X
It extends in the main scanning direction (direction of arrow Y) that is perpendicular to the main scanning direction (direction). The light emitted from the light sources 32a and 32b and reflected by the original to be read 16 is reflected by the reflection mirrors 34 and 36 and is reflected by the C
The CD sensor 38 is irradiated with light.

As shown in FIG. 4, a rolled recording paper 20, which is a thermal transfer paper, is housed in the lower cover member 12, and the end of the recording paper 20 is pulled out to the recording section 22 and transferred to the conveyor roller 4. and nip rollers 48. The recording paper 20 and the conveyance roller 46 are rotationally driven through timing belts 52a and 52b connected to a motor 50 and one-way latches. be done.

The recording unit 22 includes a flat platen 54 and a thermal head 56, and the thermal head 56 moves in the direction of arrow X via a rotational drive source (not shown). Conveyance rollers 64a and 64b are held on the upper cover member 14 side.

One end of a pair of guide plates 66a, 66b is arranged close to the conveyance roller 46 and nip roller 48, and the other ends of the guide plates 66a, 66b face the recording paper discharge port 68 of the lower cover member 12.

A guide portion 69 is formed in the discharge port 68, and a recording paper cutting mechanism 70 according to this embodiment for cutting the recording paper 20 is disposed.

This recording paper cutting mechanism 70 is arranged along a direction (arrow X direction) that intersects the recording paper 20 conveyance direction (arrow Y direction), and has a guide surface 72 that is inclined from one end side to the other end side. A cutter that cuts the recording paper 20 while being guided by the rail member 74 and the guide surface 72 and moving the cutting blade 76 in a direction (direction of arrow Z) that intersects the cutting direction (direction of arrow X). 78, and rollers (pressing members) 80a and 80b that hold the recording paper 20 during the cutting operation by the cutter 78 (see FIGS. 1 and 5).

The cutter 78 is fixed to a swinging grip 82, and the swinging grip 82 is supported by a slide base 84. This slide base 84 is held by a pair of parallel guide bars 86a and 86b extending in the direction of arrow X, and the swinging holding base 82 is supported on the slide base 84 via a fulcrum 88. A spring 90 is fixed to the slide base 84 and the swinging grip 82, and the swinging grip 82 is pulled in the direction away from the recording paper 20 via the spring 90.

The swing holding table 82 has one end protruding outward from the discharge port 68 and has a slit groove 92 at a portion corresponding to the rail member 74. A cutter 78 is fixed to this swing holding table 82, and rollers 80a, 80b are arranged on both sides of this cutter 78.
A spring 96 is provided at both ends of the rotating shafts 94a and 94b,
The rollers 80a and 80b are connected to the recording paper 2 via this spring 96.
It is pressed to the 0 side.

A rolled donor film 102 is accommodated in the image recording apparatus 10 via a cassette 100 as required (when thermal transfer paper is used as the recording paper 20). This donor film 102 is connected to a supply paper tube 104 and a collection paper tube 10.
The recovery paper tube 106 is rotated via a timing belt 110a connected to the motor 108 and a slip clutch, and the donor conveyance roller 64a is rotated via a timing belt 110b.

Next, the operation of the image recording apparatus and recording paper cutting mechanism configured as described above will be explained.

First, in FIG. 2, after the original to be read 16 is supplied with power to the original to be read placement portion 24 of the upper cover member 14, the reading section 18 is driven. Therefore, while the original to be read 16 is sub-scanned and conveyed in the direction of arrow X under the rotational action of the roller pair 28, 30, illumination light is irradiated under the urging action of the light sources 32a and 32b. The light reflected by the information surface of the original to be read 16 is reflected by the reflection mirrors 34 and 36 to the CCD sensor 3.
8 and is read by this CCD sensor 38.
6 information is photoelectrically converted and read electrically.

The read information is sent to the recording section 22 and the recording section 22 is driven, and the motor 50 is also driven. Therefore, the recording paper 20 is sent out in the direction of the arrow Y, and the recording paper 20 is sent out through the thermal head 56 and the platen 54.
and the dener film 102 are pressed together, and desired information is reproduced as a visible image on this recording paper 2D.

Here, the donor film 102 is transferred to a collecting paper tube 106 and a donor transport roller 6 which rotate under the action of a motor 108.
The paper is sequentially fed from the supply paper tube 14 side via the paper tube 4a.

After the reproduction is completed, the recording paper 20 is led out from the discharge port (8) of the lower cover member 12 through the guide plate 66a166b by the conveyance roller 4 and the nip roller 48. When the parts are brought out to the outside,
The work place operates the recording paper cutting mechanism 70.

Specifically, the swinging holding table 82, which is spaced apart from the recording paper 2Oi, is grasped via the spring 90 and is forcibly swung toward the recording paper 20 side. These larger rows 580a and 80b push the recording paper 20 against the guide plate 66 against the elastic force of the spring 96.
a and the guide portion 69.

Next, the swing holding table 82 is a rail member? When the cutter 78 is moved in the cutting direction (direction of arrow
is disconnected.

At this time, in this embodiment, the rail member 74 is formed with a guide surface 72 that slopes from one end side to the other end side, and the cutter 78 guided by this guide surface 72 is shaped like an arrow X.
direction and the direction of arrow Z at the same time (see Fig. 5).

Therefore, the cutting blade 76 of the cutter 78 cuts the recording paper 20 while being displaced in the two directions of the arrows.
Since the recording paper 20 is not constantly cut by the same portion, damage to the cutting blade 76 can be effectively prevented. This provides the effect that the durability of the cutter 78 can be improved all at once.

Furthermore, during the cutting operation by the cutter 78, the recording paper 20
Since both sides of the cut portion are pressed and held by the rollers 80a and 80b, the recording paper 20 can be cut accurately and reliably. These rollers 80a, 80b are supported by springs 96
82 toward the recording paper 20 side, the recording paper 20 can be reliably held even if the swing holding table 82 moves in the direction of arrow Z along the rail member 74.

After cutting the recording paper 20, when the grip of the swinging gripping table 82 is released, the swinging gripping table 82 swings upward about the fulcrum 88 under the tension of the spring 90, and the rollers 80a, 80b
Then, the cutter 78 separates from the recording paper 20.

In this embodiment, a case has been described in which thermal transfer paper is used as the recording paper 20, but thermal paper may also be used. In that case, since the donor film 102 becomes unnecessary, the donor film 102 can be taken out from the lower cover member 12 together with the cassette 100.

[Effects of the Invention] As described above, the recording paper cutting mechanism of the image recording apparatus according to the present invention has the following effects and advantages.

When the cutter is moved along a rail member that is piped in a direction that intersects the conveyance direction of the recording paper, the cutting edge of the cutter that moves while being guided by the guide surface of this rail member is aligned with the cutting direction. Since it moves in the intersecting direction, a part of this cutting edge does not always come into contact with the recording paper. Therefore, damage to the cutting edge portion can be effectively prevented, the durability of the cutter is improved at once, and recording paper cutting work can be carried out efficiently and favorably.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a recording paper cutting mechanism according to the present invention, FIG. 2 is a perspective view of the structure of an image recording apparatus incorporating the recording paper cutting mechanism, and FIG. 3 is a partially sectional front view of the recording apparatus. FIG. 4 is a longitudinal sectional side view of the recording apparatus, and FIG. 5 is an explanatory diagram of the operation of the recording paper cutting mechanism. 10...Recording device 16...Reading original 18...Reading unit 20...Recording paper 22...Recording unit 70...Recording paper cutting mechanism 72...Guide surface 74...Rail member 76... Cutting blade portion 78... Cutter 80 a, 80 b-o --y 82... Swinging grip stand 84... Slide base 90.96... Spring patent applicant Fuji Photo Film Co., Ltd. Company applicant representative Patent attorney Takehiro ChibaFIG, 1 4QQ-

Claims (1)

[Claims] (1) A guide member arranged along a direction intersecting the conveying direction of the recording paper and inclined from one end side to the other end side; A recording paper cutting mechanism for an image recording apparatus, comprising: a cutter that cuts the recording paper while moving the recording paper; and a pressing member that holds the recording paper when the cutter cuts the recording paper.