JPH0634121Y2 - Paper cutting device for electrostatic printers and plotters - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a paper cutting device for an electrostatic printer / plotter that automatically cuts the paper drawn / drawn by the electrostatic printer / plotter into standard drawing dimensions. Regarding improvement.

[Conventional technology and problems]

An electrostatic printer / plotter (hereinafter simply referred to as a plotter) is equipped with a paper cutting device usually called an auto cutter.

This kind of paper cutting device automatically cuts the paper drawn / outputted by the plotter to the standard drawing size, and in general, the paper on which the cutting command for cutting is drawn / outputted. The cutting command mark recorded on the surface is read by a reflective photosensor (hereinafter referred to simply as a sensor), and the cutting process is performed after reading the cutting command mark.

When a translucent or transparent paper such as tracing paper or film is used, the paper receiving portion of the sensor detection unit is glossy in order to surely detect the cutting command mark recorded on the paper with the sensor. A coating process is performed with a white paint that is not present, and the cutting command mark recorded on the paper on the surface of the paper receiving portion is read by a sensor by the contrast between the white background of the paper receiving portion and the black background of the paper mark.

However, in such a conventional method, the surface of the coating of the paper receiving unit is made of paper. Since the film material slips, the coating surface becomes dirty and wears, resulting in poor durability, and the large frictional force causes the paper to meander, which is very troublesome.

[Means for solving problems and actions]

In view of the above points, the present invention provides a paper cutting device for a plotter having a simple structure in which the abrasion resistance of the white background portion of the paper receiving portion is increased when the cutting command mark is read by the sensor. .

Therefore, in the paper cutting device, the paper receiving plate that receives the paper under the sensor that reads the cutting command mark has the white plate of the mark reading underlay in the hole opened in the paper receiving plate. It is arranged so that it is flush with the sliding surface, and the size of the mark reading underlay is larger than the cutting command mark recorded on the paper and larger than the reading field of the sensor. When the cutting command is read by, the white background is obtained on the surface of the paper receiving plate by porcelain or ceramics having excellent wear resistance and washing property. Hereinafter, the present invention will be described in detail with reference to the drawings.

〔Example〕

FIG. 1 and FIG. 2 show a main part configuration of an embodiment to which the present invention is applied. 1 is a plotter, 2 is a sheet of paper which is drawn and printed by the plotter 1 using roll paper, 3 is a paper cutting device. Here, the paper cutting device 3 is an example including a paper receiving plate 31, paper feeding rollers 32, a paper pressing member 33, a sensor 34, a rotary cutter 35, and a slitter 36. The function of such a construction is as follows.

That is, in FIG. 1 and FIG. 2, the paper 2 continuously drawn / drawn from the plotter 1 is automatically cut by the paper cutting device 3 to the standard drawing size.

Now, the paper 2 output by the plotter 1 is the paper feed roller.
The paper retainer 33 is sent by 32 and slides on the paper receiving plate 31 while pressing the paper retainer 33.
When the cutting command mark recorded on the sheet 2 comes on the underlayment A provided on the paper receiving plate 31 at the lower part of the sensor 34, the sensor 34 cuts from reading the cutting command mark When the command is obtained, the sheet 2 is cut by the rotary cutter 35 that cuts the sheet 2 perpendicularly to the feeding direction and the slitter 36 that cuts the sheet 2 parallel to the feeding direction.

Here, the paper receiving plate 31 is formed such that the lower part of the sensor 34 is processed into a concave shape and the underlay portion A as a paper receiving underlay is fixed. Furthermore, the underlay portion A is made of white porcelain or ceramic and is formed to have a non-glossy surface so that the surface of the paper 2 on the sliding side is not excessively reflected. From this, by adopting such an underlay portion A,
When the conventional urethane white paint is used for the lower part of the sensor 34 in the paper receiving plate 31, the defect that the condense layer (0.1mm) is worn out with about 300 rolls of 200m roll is completely eliminated. , The sensor 34 could be effectively used.

[Effect of device]

As described above, according to the present invention, the durability of the white background of the mark detection unit is dramatically improved by the special paper receiving underlay when reading the cutting command mark recorded on the paper output from the plotter. It is possible to provide a useful apparatus in which a general cleaning agent such as thinner can be used.

[Brief description of drawings]

FIG. 1 and FIG. 2 are a partially cutaway side view and a partial detailed view showing a main part configuration of an embodiment to which the present invention is applied. 1 ... Electrostatic printer / plotter (plotter), 2 ... paper, 3 ... paper cutting device, A ... underlay of paper receiving plate 31.

Claims (1)

[Scope of utility model registration request] 1. A sheet provided with continuous drawing / drawing from an electrostatic printer / plotter using roll paper, a reflection type photosensor for reading a cutting command mark recorded on the sheet, and a paper receiving underlay, and cutting. In the paper cutting device of the electrostatic printer / plotter that cuts to the standard drawing size after reading the command mark, a matte white porcelain or ceramic paper receiving underlay is provided on the detection position surface of the reflection type photo sensor part. A paper cutting device for electrostatic printers and plotters.