JPH02239963A - Recorder - Google Patents

Abstract

PURPOSE:To remove jamming easily by providing a means for energizing a guide member in the direction of a recording means and a means for moving the guide member is the direction departing from the recording means while resisting against the energizing means. CONSTITUTION:A guide member 4a is made of rigid sheet metal where the guide section 4a and a bent leg section 4b provide an approximately T-shaped cross section. Screw holes 4c are made at two predetermined positions of the leg section 4b in order to secure the leg section 4b through a screw 12 to a cutter chassis 5c, where a leaf spring 13 is placed between the cutter chassis 5c and the guide member 4. Upon tightening of the step screw 12, the guide member 4 is energized by means of the leaf spring 13 and the side of the guide section 4a contacts with a flange 10a. A knob 15 is fixed, as a moving means, to one side end portion of the guide member 4 at the outside of carrying area of a recording sheet 1 integrally with the guide member 4.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a recording apparatus that can reliably guide a sheet after recording to a cutter and that can easily handle jams and the like.

<Conventional technology> Today, facsimiles and printers are widely used, but
As these recording methods, a thermal recording method is generally used as shown in FIG.

That is, a thermal recording sheet 51 is conveyed by a platen roller 50, and an image is formed by selectively heating the recording sheet 51 by a recording head 52, and this is cut from the trailing edge of the image by a cutter 53. It is configured so that it can be discharged.

In the above configuration, a guide 54 is provided between the platen roller 50 and the cutter 53 so that the sheet 51 after recording is reliably conveyed between the movable blade 53a and the biasing blade 53b.
55 are provided. This guide 54 is arranged so that the recording sheet 51 can be inserted into the gap 56 between the platen roller 50 and the guide 54.
It is necessary to make the gap 56 as small as possible to prevent it from entering.

Conventionally, when constructing a structure such as a facsimile with a sheet metal chassis, the platen roller 50 is rotatably fitted into fitting holes on both side plates of the chassis, and the guide 54 and the force/plate 53 are mounted on the stay of the chassis. It is common to attach it by fixing it to the second part. Adjustment of the gaps between the guide 54, platen roller 50, and cutter 53 relies on the dimensional accuracy of each component.

<Problems to be Solved by the Invention> However, in the case of the conventional configuration, if the leading edge of the recording sheet 51 gets jammed in the gap 56 between the platen roller 50 and the guide 54, the user has to clear the jam. Even if an attempt is made to do so, since the guide 54 is fixed, the recording sheet 51 must be pulled out while deforming the guide 54, and considerable force is required to deform the guide 54. Further, when the guide member 54 is deformed, the guide 54 may be plastically deformed, and in this case, the gap 56 widens, making it easier for the recording sheet 51 to enter the gap 56. there were.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording apparatus that solves the above-mentioned conventional problems and can easily handle paper jams.

<Means for solving the problem> Representative means of the present invention for solving the problem. teeth,
A conveying means for conveying a recording sheet, a recording means for recording an image on the recording sheet 1- conveyed by the conveying means, and a guide for guiding the recording sheet on which an image is recorded by the recording means. a member, a biasing means for biasing the guide member toward the recording means, and a moving means for moving the guide member in a direction away from the recording means against the bias of the biasing means. It is characterized by having the following.

<Operation> According to the above means, the sheet recorded by the recording means is conveyed while being guided by the guide member. Further, when the sheet enters the gap between the recording means and the guide member, the user moves the guide member away from the recording means using the moving means, so that the gap between the recording means and the guide member widens, and the sheet is moved away from the guide member. It can be easily removed.

<Embodiment> Next, an embodiment of the present invention in which the above means is applied to a facsimile machine will be described.

[First embodiment]

FIG. 1 is an explanatory central sectional view of the facsimile machine, and FIGS. 2(8) and 2(B) are an explanatory perspective view and a sectional view showing the mounting state of the guide member and the moving means.

First, the overall structure of the apparatus will be explained briefly.■ is a thermosensitive recording sheet that develops color by applying heat.In this embodiment, a long sheet is wound in a roll around an inner core 1a having a diameter of approximately 16 m. 1b is stored in a drop-in type roll holder 2.

An image is recorded on the recording sheet 1 in a recording section 3, which will be described later, and the recorded sheet 1 is guided to a cutter 5 by a guide member 4 having a knob 15 as a moving means, which will be described later, and after the image is recorded. It is cut from the end and stacked on the reversing tray 7 at the discharge port 6.

Reference numeral 8 denotes a document reading section, which separates the documents 9 stacked on the top cover one by one using a preliminary conveyance roller 8b in pressure contact with a separation pressing piece 8a and a separation roller 8d in pressure contact with a separation pressing piece 8C. It is configured to be transported by a transport roller 8f that is in pressure contact with a roller 8e. Further, a light source 8g irradiates the document written surface of the document 9 being conveyed, and the reflected light is directed to a photoelectric conversion element 8j such as a CCD via a mirror 8h and a lens 81, and the image is converted into an image in the copy mode. The data is configured to be transmitted to its own recording unit, and to the recording unit of another device in the facsimile mode (transmission mode).

Next, the configuration of each part will be specifically explained.

First, the configuration of the recording section 3 is such that a platen roller 3a, which also serves as a conveying means and is driven by a motor (not shown), has a
A recording head 3b in which heating elements each energized to generate heat in response to an image signal are arranged in a row is pressed by a pressing spring 3C. Therefore, an image is recorded on the recording sheet 1 by rotating the platen roller 3a in the direction of arrow A to convey the recording sheet 1, and in synchronization with this, the heating element generates heat in accordance with the image signal. It is something.

Next, the cutter 5 will be explained. This is the biasing blade 5a.
This is a rotary cutter consisting of a movable blade 5b and a movable blade 5b. The biasing blade 5a is a biasing blade stay 5 that is rotatable around a shaft 5al.
a2, and this stay 5a2 has a biasing blade 5.
An upper guide portion 5a3 is formed.

The movable blade 5b is similarly attached to a movable blade stay 5bz that is rotatable around the shaft 5b+, and the recording sheet 1 cut by the cutter 5 is disposed on the upper surface of the movable blade 5b. A movable blade guide 5b3 is provided to guide the blade to the outlet 6.

In FIG. 1, 5C is a cassitor chassis that constitutes the entire structure of the cutter, and has side plate portions (not shown).
The shaft 5a of the biasing blade 5a is rotatably attached to the positioning hole in the side plate so as to bias the movable blade 5b. Similarly, the movable blade 5 is inserted into the positioning hole of the side plate.
The shaft 5b+ of b is rotatably attached, and this shaft 5b+
is configured to transmit rotational force from a motor (not shown). When the movable blade 5b rotates, it sequentially rubs against the biasing blade 5a, and the recording sheets 1 and 1 inserted between the two blades 5a and 5b are cut.

Next, the mounting structure of the guide member 4 for guiding the recording sheet 1 from the recording section 3 to the cutter 5 will be explained.

As shown in FIGS. 2(A) and 2(B), this guide member 4 is connected to a platen roller 3a which serves as a conveying means for the recording sheet 1.
It is attached so that it abuts on the bearing 10 of.

To explain this specifically, the shaft 3 of the platen roller 3a
Both ends of al are rotatably supported by bearings 10, and these bearings 10 are fitted and supported by U-shaped portions 11a and Ilb of heath 11.

Further, the bearing 10 is formed with a flange 10a having a radius larger than the radius of the platen roller 3a having a diameter of about 1611 by p (in this embodiment, β is set to about 0.5 am). Further, the bearing 10 is fitted with the U-shaped portions 11a and llb so that the bearing 10 does not rotate, and the flange 10a does not come into contact with the recording head 3b which is in pressure contact with the platen roller 3a in the axial direction. It is installed like this.

The guide member 4a is made of a highly rigid sheet metal, and the guide portion 4
a and the bent leg portion 4b form a substantially lrTj-shaped cross section. Screw holes 4C are formed in two predetermined positions of the leg portion 4b, and a stepped screw 12 is inserted through the screw holes 4c.
At this time, a leaf spring 13 is interposed between the cutter chassis 5C and the guide member 4, and the cutter chassis 5C is fixed to the cutter chassis 5C. The guide member 4, which is attached to the chassis 5c with the step screw 12, does not move vertically or horizontally, but is attached with some wobbling in the front-rear direction (direction toward the platen roller 3a).

Therefore, when the step screw 12 is tightened, the guide member 4 is urged upward by the plate spring 13, and this urging force causes the guide portion 4 to
The end side of a contacts the flange 10a. Further, the end side of the guide portion 4a on the side facing the platen roller 3a is formed into a straight line with excellent straightness. As a result, the platen roller 3a and the guide portion 4a are mounted parallel to each other, with the gap between them 3a and 4a being exactly the distance β.

The dimension a of the gap is such that the leading edge of the recording sheet after recording does not enter the gap, and this gap can be easily set by setting the radius of the flange 10a of the bearing 10.

Further, the cutter chassis 5c is fixed to the base 11 with fixing screws 14. At this time, the cutter side edge of the guide portion 4a of the guide member 4 attached to the cutter chassis 5C is also connected to the cutter chassis 5C.
so as to be located above the movable blade 5b attached to the
The length of the leg portion 4b of the guide member 4 is set.

By removing the guide member 4 as described above, the gap between the platen roller 3a and the guide member 4 can be set accurately without adjusting, and the recording sheet 1 after recording is placed in the recording part. 3, the cutter 5 is guided by a guide member 4, and is reliably conveyed between the biasing blade 5a and the movable blade 5b of the cutter 5.

Next, the moving means for separating the guide member 4 from the platen roller 3a will be explained. In this embodiment, the moving means is constituted by a knob 15.

As shown in FIG. 2(A), the knob 15 is integrally attached to one end of the guide member 4 outside the transport area of the recording sheet 1. As shown in FIG.

In the recording apparatus configured as described above, since the gap between the platen roller 3a and the guide member 4 is set to be very small, the leading edge of the recording sheet 1 that has passed through the recording section 3 falls into the gap. It is conveyed to the cutter 5 without entering.

Furthermore, even if the tip of the seam 1 enters the gap, when the user pushes the knob 15 in the direction of arrow B as shown in FIG. and move in the direction of arrow B. As a result, the guide portion 4a separates from the flange 10a, and the platen roller 3a and the guide F
The gap with the portion 4a is widened, and the recording sheet 1, 1 that has entered the gap can be easily pulled out.

After pulling out the recording sheet 1, the knob 1
5, the guide portion 4a comes into contact with the flange 10a again due to the biasing force of the plate spring 13, thereby ensuring the gap distance l.

[Other Examples]

In the embodiment described above, an example was shown in which the guide member 4 and the knob 15, which is a separate member, were integrally attached to the guide member 4.
A part of the sheet metal of the guide member 4 may be bent, and this bent portion may function as a knob.

Furthermore, the knob does not necessarily have to be constructed integrally with the guide section 4. For example, as shown in FIG.
The knob member 16 may be configured to be able to come into contact with the protrusion 4d of the guide member 4 by attaching the knob member 16 so as to be swingable about the shaft 16a. Even in this configuration, when the knob 16 is pushed in the direction of arrow B, the guide portion 4a is separated from the platen roller 3a, and when the knob 16 is released, the guide portion 4a comes into contact with the flange 10a.

Further, the means for biasing the guide member 4 against the flange 10a is not limited to the plate spring 13, and a coil spring, a torsion coil spring, a web washer, rubber, or the like may be used.

Furthermore, the biasing means may be constructed integrally with the guide member 4.

For example, as shown in FIGS. 4(A) and 4(B), the guide member 17 includes a guide portion 17a made of a sheet metal with strong rigidity and excellent straightness, and a spring member having elasticity (for example, a stainless steel plate for springs). The leg portion 17b may be attached to the cutter chassis 5C with screws 18.

Furthermore, in the above-mentioned embodiment, the guide portion 4 is connected to the stepped screw 1.
In addition to attaching it to the cutter chassis 5C in 2.
As shown in the figure, a locking portion 5c may be formed on the cutter chassis 5C, and the leg portion 4b of the guide member 4 may be locked to this locking portion 5c+.

That is, when attaching the guide member 4, it is sufficient to attach it so as to suppress movement in the vertical and horizontal directions.

Furthermore, although the above-mentioned embodiments have shown examples of a thermal recording method, it goes without saying that the present invention can also be applied to a thermal transfer recording method or a wire dot recording method.

<Effects of the Invention> As described above, in the present invention, since the guide member for guiding the recording sheet that has passed through the recording section is biased toward the recording means, the gap between the recording means and the guide member can be easily reduced. It can be managed.

Further, since a moving means for moving the guide member away from the recording means is provided, even if a sheet enters the gap between the recording means and the guide member, the guide member can be moved away from the recording means. , sheets etc. that have entered the gap can be easily removed.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional explanatory view of a facsimile machine according to an embodiment of the present invention, FIGS. The figure is an explanatory diagram of an embodiment in which the knob is constructed separately from the guide member, and FIGS. FIG. 5 is an explanatory diagram of an embodiment showing a guide member installation structure without using screws, and FIG. 6 is an explanatory diagram of a conventional technique. 1 is the recording sheet, 1a is the inner core, 2 is the roll holder, 3
is a recording unit, 3a is a platen roller, 3b is a recording head,
3c is a spring, 4 is a guide member, 4a is a guide part,
4b is a leg, 4c is a screw hole, 4d is a protrusion, 5 is a cutter, 5a is a movable blade, 5b is a biasing blade, 6 is an ejection port, 7 is a reversing tray, 8 is a document reading section, 9 is a document , 10 is a bearing, 10a is a flange, 11 is a heath, Ila, llb
12 is a step screw, 13 is a temporary spring, 14 is a fixing screw, 15 is a knob, 16 is a knob member, 16a is a shaft, 17 is a guide member, 17a is a guide portion, and 17b is a leg portion. 51a

Claims (3)

[Claims] (1) A conveyance means for conveying a recording sheet, a recording means for recording an image on the recording sheet conveyed by the conveyance means, and a recording means for guiding the recording sheet on which an image is recorded by the recording means. a guide member; a biasing device for biasing the guide member toward the recording device; and a moving device for moving the guide member in a direction away from the recording device against the bias of the biasing device. A recording device having: (2) The recording device according to claim 1, wherein the guide member as the urging means is constituted by an elastic member, and the guide member is urged toward the recording means by the elastic force of the guide member. (3) The recording device according to claim (1), wherein the moving means is constituted by a knob integrally attached to the guide member.