JPH0482696A - Cutter for facsimile device and the like - Google Patents

Abstract

PURPOSE:To miniaturize cutters to reduce their weight and lower cost without causing chatter at the cutting edge surface and without damaging sharpness by providing a moving cutter with thick cutting edge and a stationary cutter with sharp cutting edge for mating with the moving cutter, and locking the stationary cutter to a support plate journalled to a unit holder. CONSTITUTION:A moving cutter 27 with thick cutting edge is journalled to a unit holder 26. Further, a stationary cutter 28 with sharp cutting edge is locked to a support plate 33 journalled to the unit holder 26. When a cutter- motor is rotated, a gear 40 connected to the moving cutter rotates to oscillate a lever 36. When the lever 36 is oscillated, the moving cutter 27 at its home position is moved around a shaft 37 to cut a recording paper 20 along a mating line with the stationary cutter 28, and then returns to its home position by one rotation of the gear 40.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to cutters for printers, plotters, copying machines, facsimile machines, etc. that use roll paper as recording paper, and particularly relates to cutters for printers, plotters, copying machines, facsimile machines, etc. that use roll paper as recording paper. This invention relates to a cutter for facsimile machines, etc., which is combined with a fixed blade.

[Background of the Invention] Roll paper is widely used as recording paper in coprinters, block machines, copying machines, facsimile machines, and the like.

For example, in a facsimile machine, a roll of thermal recording paper is fed into the recording paper storage chamber in a freely feeding state, and when a reception is received, the thermal recording paper is fed out with a platen and the received image information is transferred to the thermal The head prints and records on thermal recording paper.

Then, the thermal recording paper on which the received information was printed and recorded was passed between a thick movable blade and a fixed blade and cut into a predetermined length.

[Problems to be Solved by the Invention] For example, facsimile machines and the like are required to be smaller, lighter, and lower in cost for practical purposes.

In the cutter section, it is possible to replace the thick movable blade and fixed blade with thin blades, but if both the movable blade and the fixed blade are made thin, the blade surface chatter will decrease due to a decrease in the straightness and strength of the blade surface. arise.

As a result, there were problems such as a decrease in sharpness, an increase in cutting noise, and a decrease in durability.

In view of the above points, this invention was made as a result of various research experiments, and the purpose of this invention is to provide a cutter for facsimile machines, etc., which can achieve a certain reduction in weight and cost, has good sharpness, and does not have chattering noise. shall be.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a thick movable blade that is pivotally supported on a unit holder in a cutter for a facsimile machine or the like that uses roll paper as recording paper. and a thin fixed blade fixed to a support plate that is pivotally supported by the unit holder.

[Operation] When image information is received by the facsimile machine F shown in FIG.
At the same time as 0 is printed and recorded, the receiving motor rotates the platen 23 clockwise to feed out the recording paper 20.

The leading edge of the recording paper 20 on which image information has been printed and recorded passes between the movable blade 27 and the fixed blade 28 of the cutter unit 24, and reaches the receiving tray 5 from the discharge port 25.

When the fed recording paper 20 reaches a predetermined position, the cutter motor is rotated.

When the cutter motor rotates, a gear 40 connected to the cutter motor rotates, causing the lever 36 to swing.

When the lever 36 swings, the movable blade 27 in the home position shown in FIG.
It moves as shown in the figure, cuts the recording paper 20 along the cutting line with the fixed blade 28, and returns to the home position with one rotation of the gear 40.

[Embodiment] Next, an example in which an embodiment of the cutter for a facsimile machine or the like according to the present invention is incorporated into a facsimile machine F will be explained.
This will be explained in detail with reference to the drawings.

111], the cutter unit 24 includes a unit holder 26 attached to a frame (not shown) of an exterior case, a movable blade 27 pivotably supported by the unit holder 26, and a shaft mounted at the bottom of the unit holder 26. It consists of a supported thin fixed blade 28.

To explain in more detail, the unit holder 26
As shown in the figure, the rear of the top plate 26a is bent downward using a steel plate or the like to form a gate shape, and one of the side plates 26a
A circular plate 29 for guiding the movement of the movable blade 27 is drilled in b as shown by the two-dot chain line in FIG.

As shown in FIG.
, 26b, and a lead bin 31 is implanted on the cutting edge side of one side plate 26b.

The shafts 30, 30 of the movable blade 27 are not supported at the same height, but the side on which the lead bin 31 is planted is located close to the fixed blade 28 (lower side), as shown in FIG. Thus, the recording paper 20 is cut from the lead bin 31 side.

Furthermore, a guide plate 32 is attached to the lower surface of the movable blade 27 for smoothly feeding the recording paper 20, as shown in FIG.

The movable blade 27 is normally located at the home position shown in FIG.

The fixed blade 28 is welded to the upper part of a support plate 33 having a cross-sectional shape, as shown in FIG.

The support plate 33 to which the fixed blade 28 is welded is connected to the shaft 3 welded to the inner corners of both ends, as shown in FIG.
4.34 is pivotally supported by the side plates 26b, 26b of the unit holder 26, and is urged in the paper feeding direction by a torsion coil spring 35.

The torsion coil spring 35 is fitted onto one shaft 34 as shown in Section 1 and FIG. It is latched to the latching hole 26c.

The lead bin 31 of the movable blade 27 is, as shown in FIG.
It is pivotally supported at the tip of the lever 36.

The lever 36, on which the lead bin 31 is pivotally supported, is located at the fourth
As shown in the figure, the intermediate portion is swingably supported by a shaft 37 embedded in the frame (not shown) of the outer case.
A bottle 39 is inserted into a long hole 38 cut out at the base end.

The above-mentioned bin 39 is erected on the outer peripheral side of the gear 40, as shown in FIG.

Gear 40 is connected to a cutter motor (not shown).

As shown in FIG. 5, for example, a facsimile machine F incorporating a cutter includes a box-type exterior case 1, a transmitting means 2 for reading original images with an optical reading system, and a receiving means for printing and recording incoming image information. It is composed of 3.

The exterior case 1 includes a lower cover 4 serving as a base, a back cover 6 to which a reception tray 5 is attached, side covers 7.7 on both sides (only one is shown), and a transmission door with an operation panel 8 on the top surface. 9, and a reception door 10 disposed on the rear side of the top surface.

The operation panel 8 disposed on the inclined upper surface of the exterior case 1 has an LCD board (not shown) of a liquid crystal display unit and a panel assembly (not shown) of pushbutton switches such as a numeric keypad as usual.

As shown in FIG.
a separation vat unit 13 that separates the originals 12 one by one; a self-feeding roller 14 that sends the separated originals 12 to the optical system;
A pressure roller 15, a feed roller 16, a paper ejection roller 17, and a self-feeding roller 14 are arranged below the pressure roller 15, the feed roller 16, and the self-feeding roller 14, which are arranged opposite to each other across the moving surface. and an optical reading unit 18,
The bi-leaf originals 12 stacked on the original stacker 11 are separated one by one, the images are read by the optical reading unit 18, and the images are sent out to the paper ejection port 19.

The image signal read by the optical reading unit 18 is transmitted to the other party using a communication class.

The receiver Fi3 includes a recording paper storage chamber 21 that freely feeds and stores a roll of recording paper 20, and a thermal head that prints and records image information transmitted to the recording paper 20 that is fed out from the recording paper storage chamber 21. 22 and platen 23,
It is composed of a cutter unit 24 that cuts the recording paper 20 on which received information is printed and recorded into a predetermined length, and prints the transmitted image information on the recording paper 20, cuts it to a predetermined length, and receives it. The recording paper 20 is sent out from the ejection port 25 onto the receiving tray 5.

When the image information is received by the facsimile machine F shown in FIG.
At the same time as 0 is printed and recorded, the receiving motor rotates the platen 23 clockwise to feed out the recording paper 20.

The low light of the recording paper 2o on which image information has been printed and recorded passes between the movable blade 27 and the fixed blade 28 of the cutter unit 24, and reaches the receiving tray 5 through the discharge port 25.

When the fed recording paper 20 reaches a predetermined position, the cutter motor is rotated.

When the cutter motor rotates, a gear 40 connected to the cutter motor rotates, causing the lever 36 to swing.

When the lever 36 swings, the movable blade 27 in the home position shown in FIG.
It moves as shown in the figure, cuts the recording paper 20 along the cutting line with the fixed blade 28, and returns to the home position with one rotation of the gear 40.

U Effects of the Invention] As described above, the cutter of the facsimile machine or the like according to the present invention has a fixed blade that engages the thick movable blade with a thin blade, and a support plate that is pivotally supported on the unit holder. This makes it possible to reduce the size, weight, and cost of the cutter without causing chatter on the blade surface or impairing sharpness.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the cutter of the facsimile machine or the like according to the present invention at its home position, Fig. 2 is a cross-sectional view of the movable blade in a moving state, Fig. 3 is a partially omitted rear view, and Fig. 4 is a cross-sectional view of the cutter. FIG. 5 is a schematic side view showing an example of an operating mechanism, and FIG. 5 is a sectional view of the facsimile machine. F Facsimile machine 24 Cutter unit 6 unit holder Movable blade Fixed blade Support plate

Claims (1)

[Claims] (1) In a cutter for a facsimile machine or the like that uses roll paper as recording paper, there is a thick movable blade that is pivoted on a unit holder, and a thin fixed blade that is fixed to a support plate that is pivoted on the unit holder. A cutter for a facsimile machine, etc., characterized by comprising: