JP2009002856A - Paper powder measuring method and paper powder measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a paper powder trouble by previously determining the amount of paper powder further exactly so that the paper powder trouble of transfer paper for electrophotograph does not occur when a copy is obtained, in a copying machine or a printer. <P>SOLUTION: This paper powder amount measuring device brings a contact member 5 into contact with a surface of measuring paper P and slides it, collects the paper powder having separated from the measuring paper P by the contact of the contact member 5, and sets the collected amount of paper powder as a measurement paper powder. The paper powder amount measuring device is provided with a tool rest 4 for supporting the contact member 5 that comes into contact with the measuring paper P and slides, and a slide member 3 sliding on a slide rail 2 for the slide member integrally with the tool rest 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper dust measuring method and a paper dust measuring device for measuring the amount of paper dust on the front and back surfaces in the field of processed paper used in image forming apparatuses such as copying machines, printers, and facsimiles.

In copying machines and printers using electrophotography, the toner image on the photoconductor is transferred to transfer paper, and the transferred image is fixed on the transfer paper with a fixing roller that heats and pressurizes the copy. obtain. In offset printing, printing is performed by a method in which an image is once transferred to a blanket and the image is transferred to paper.
In these processes, troubles of image defects due to paper dust that comes off from the front and back surfaces of the transfer paper may occur. Specifically, paper fibers and fillers that are removed during copying cause problems.
In an electrophotographic copying machine, a printer, a printing machine, and the like, it is an extremely important problem to prevent the occurrence of image defect troubles caused by the paper powder detached from the transfer paper.
In order to deal with such problems in electrophotographic copying machines, printers, printing machines, etc., conventionally, for example, as a countermeasure for paper surface strength, internal chemicals in the paper making process, amount of filler used, and external chemicals in the size press Several solutions have been proposed, including a method that is supported by the above (for example, see Patent Document 1).
Patent Document 1 discloses a test method in which the measurement surface of a measurement paper and a contact member that is an abrasive are contacted and slid to release the paper dust from the front and back surfaces of the paper, and the amount of the released paper dust is measured. .
JP 2003-106952 A

However, since the method according to Patent Document 1 uses an abrasive for the contact member and collects the amount of paper powder that comes into contact with the surface and separates from the surface of the paper, the paper powder enters the concave portion of the contact object. For this reason, it has the fault that collection efficiency is inferior and the lifetime of a contact member is short because of clogging.
Accordingly, the object of the present invention is to take into account the above-mentioned situation and to more accurately determine the amount of paper dust in advance so that paper dust trouble does not occur when copying with a copying machine or a printer. It is an object of the present invention to provide a paper dust measuring method and a paper dust measuring apparatus that can solve this problem and solve the problem of paper dust trouble occurrence.

In order to solve the above-mentioned problem, the invention according to claim 1 is configured to collect a paper powder separated from the measurement paper by contacting the contact member on the surface of the measurement paper and contacting the contact member. In the paper dust amount measuring method in which the amount of the paper dust is the measured paper dust amount, a paper dust measuring method for collecting the paper dust using the replaceable blade attached as the contact member for the paper dust of the measuring paper. Features.
According to the second aspect of the present invention, a contact member is brought into sliding contact with the surface of the measurement paper, the paper powder separated from the measurement paper by the contact of the contact member is collected, and the amount of the collected paper powder is measured. In a paper dust amount measuring device for paper dust amount, a tool rest supporting the contact member that slides in contact with the measurement paper, and a slide that slides on a slide rail for a slide member integrally with the tool rest. And a paper dust measuring device comprising a member.
According to a third aspect of the present invention, there is provided the paper dust measuring device according to the second aspect, wherein the contact member comes into contact with the measurement paper at its ridgeline and collects paper dust from the measurement paper.
The invention according to claim 4 is characterized in that the contact member is a cutter, and the cutter is made of ceramic.
The invention according to claim 5 is characterized in that the contact member is a blade, and the blade is made of diamond.
The invention according to claim 6 is characterized in that the contact member is a blade, and the blade is made of a stainless material.

The invention according to claim 7 is characterized in that the paper dust measuring device according to any one of claims 2 to 6, wherein a contact pressure at which the contact member comes into contact with the measurement paper is 5 kg or less.
In the invention according to claim 8, the contact member is slid on the surface of the measurement paper, the paper powder separated from the measurement paper by the contact of the contact member is collected, and the amount of the collected paper powder is measured. In a paper dust amount measuring device for paper dust amount, a tool rest supporting the contact member that slides in contact with the measurement paper, and a slide that slides on a slide rail for a slide member integrally with the tool rest. The contact member is in contact with the measurement paper at its ridgeline, and the contact angle between the ridgeline of the contact member and the measurement paper is in the range of 5 to 45 degrees.
The invention according to claim 9 is characterized in that the contact member is a blade and the blade is made of ceramic.
The invention according to claim 10 is characterized in that the contact member is a blade, and the blade is made of diamond.
The invention according to claim 11 is characterized in that the contact member is a blade, and the blade is made of a stainless material.
The invention according to claim 12 is characterized in that the paper dust measuring device according to any one of claims 8 to 11, wherein a contact pressure at which the contact member comes into contact with the measurement paper is 5 kg or less.

According to the present invention, the surface paper dust measuring method of the present invention uses a measuring surface of a measuring paper and a contact member as a cutter, contacts and slides the ridge line of the cutter, collects the separated paper dust, and collects the collected paper dust. Since the amount is the amount of measurement paper dust, accurate measurement is possible.
Moreover, when the ridgeline of a cutter is grind | polished and paper powder collection worsens, the exchange property of the cutter is also made easy. If the blade has a defect (degradation of paper dust scraping performance), it can be replaced immediately to improve the measurement time, and the surface of the measurement paper can be cut efficiently by using the blade as a contact member. Paper dust can be collected.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing one embodiment of a paper dust measuring apparatus according to the present invention. FIG. 2 is a top view showing the paper dust measuring device of FIG.
1 and 2, a paper dust measuring apparatus A includes a paper placing table 1 on which a measurement paper P is placed, and a slide rail 2 for a sliding member laid on the upper surface of the paper placing table 1. The slide member 3 is driven back and forth on the slide rail 2 for the slide member.
Here, the slide member 3 is configured to slide on the measurement paper P by the handle 9. The slide member 3 may be configured to automatically slide on the slide rail 2 for the slide member by a slide motor (not shown).
A paper presser (not shown) is provided on the paper mounting table 1. A tool post 4 is coupled to the slide member 3 by a tool post raising / lowering rail 6, and a tool 5, which is a contact member that directly contacts the measurement paper P, is attached to the tool post 4.
The tool post 4 can be moved up and down by a tool post lifting rail 6, and the ridge line of the tool 5 (contact member) applies the load of the tool 5 to the measurement paper P. By scraping the surface of the measuring paper P with the edge of the blade 5, paper dust can be collected efficiently.
Further, the tool post 4 can be removed from the tool post lifting rail 6 and the tool post 5 can be easily replaced. The blade 5 is fixed to a blade holder 7 that holds the blade 5 with a mounting screw 8.
Thus, when the ridgeline of the blade 5 is polished and the collection of paper dust becomes worse, the exchangeability of the blade is facilitated. That is, when a failure (slowness of cutting) occurs in the blade 5, the measurement time can be improved by adopting a structure that can be immediately replaced, and the surface of the measurement paper P is shaved using the blade 5 as a contact member. It is possible to collect paper dust efficiently.
As described above, in the figure, P is a sheet to be measured. It should be noted that if a rubber mat or the like is placed on the part on which the measurement paper P is placed on the paper placement table 1, the positional deviation or the like can be reduced or eliminated. Although not shown, a suction means for sucking paper dust may be provided in the vicinity of the position where the slide member 3 contacts the measurement paper P.

The operation according to the present invention will be described below. First, the measurement paper P is affixed to the paper mounting table 1 with a paper presser (not shown). Thereafter, the tool post elevating rail 6 is operated to lower the tool post 4 and bring the tool 5 into contact with the measurement paper P. At this time, the measurement paper P is subjected to a weight of 5 kg (the blade 5, that is, the weight of the contact member), which will be described in detail later.
FIG. 3 is a schematic view showing the contact angle between the blade and the measurement paper. In FIG. 3, the blade 5 as a contact member is in contact with the measurement paper P at a contact angle of 10 degrees. The contact angle with the measurement paper P is a value determined by experiment. As shown in the figure, the contact angle is set to 10 degrees in the present embodiment.
When the contact angle exceeds 45 degrees, chatter occurs between the blade 5 and the measurement paper P, and accurate paper dust cannot be measured. Similarly, tearing occurred. As described above, when the contact (edge) angle is 5 degrees or less, the cutting tool bites too much and the measurement paper P is torn, and when the contact angle is 45 degrees or more, the blade stands too much to cause chatter with the measurement paper P. Sampling cannot be measured accurately.
The slide member 3 is slid on the measurement paper P by the handle 9, and paper dust is collected from the surface of the measurement paper P by the blade 5. The collected paper dust is weighed with an electronic balance (not shown), and the measured weight is used as the amount of paper dust.

FIG. 4 is a graph showing the measurement result of the paper dust amount. FIG. 4 shows a case of A paper and B paper, in which the collected paper powder is weighed with an electronic balance and the weight is taken as the amount of paper powder. The amount of paper dust is about 9 mmg for paper A, and the amount of paper powder is about 13 mmg for paper B.
FIG. 5 is a graph showing the relationship between the blade load on the measurement paper and the amount of paper dust. The values shown in FIG. 5 are values determined by experiments. In the present embodiment, the weight is set to 5 kg from the experimental results.
If this weight exceeds 10 kg in the experiment, the measurement paper P (FIG. 3) is torn by the blade 5 (FIG. 3), and the blade 5 is peeled off to the fibers of the measurement paper P. Is no longer possible.
As described above, when the contact pressure is increased to 5 kg or more, not only the paper dust on the surface but also the fibers are peeled off, and in the case of thin paper, the measurement paper P is torn and measurement is impossible. If the contact pressure is 5 kg or less, the paper dust can be collected efficiently without the measurement paper P being torn.
FIG. 6 is a schematic exploded view for explaining the replacement of the blade. When the blade 5 needs to be replaced, the blade base 4 is removed from the slide member 3 (FIG. 1), and the blade holder 7 and the mounting screw 8 are removed to replace the blade 5 as a contact member with a new blade 5. be able to.

FIG. 7 is a schematic perspective view showing the shape of the blade when the blade is made of ceramic. As the material of the blade 5, a material that does not clog the paper dust collected from the measurement paper P (FIG. 3) is suitable. In FIG. 7, the shape of the blade 5 using ceramic as a material is shown.
FIG. 8 is a schematic perspective view showing the shape of the blade when the blade is made of diamond. In FIG. 8, the diamond 11 is bonded to the metal base 10.
Although illustration is omitted, stainless steel can be used in the same manner as ceramic and diamond. By using these materials, clogging of the blade 5 due to sliding is prevented, and the blade 5 is not easily worn. This eliminates the inconvenience that if the blade 5 is clogged, it is difficult to collect the clogged portion and the amount of paper dust cannot be measured accurately.
Furthermore, when the present invention is summarized based on FIG. 1, as described above, the measurement paper P is attached to the paper mounting table 1 by a paper presser (not shown), and then the tool post 4 is attached to the tool post lifting rail 6. Lower and bring the blade 5 into contact with the measurement paper P. At this time, as an optimum condition, the measurement paper P is subjected to a weight of 5 kg (self-weight of the contact member). Further, the blade 5 is in contact with the measurement paper P at a contact angle of 10 degrees.
From this state, the slide member 3 is then slid on the measurement paper P by the handle 9 on the slide rail 2 for the slide member, and paper dust is collected from the surface of the measurement paper P by the blade 5. The collected paper dust is weighed with an electronic balance (not shown), and the weight is used as the amount of paper dust.

It is a side view which shows embodiment of the paper dust measuring apparatus which concerns on this invention. It is a top view which shows the paper dust measuring apparatus of FIG. It is the schematic which shows the contact angle of a cutter and a measurement paper. It is a figure which shows the measurement result of the amount of paper dust with a graph. It is a figure which shows the relationship between the cutter weight to a measurement paper, and the amount of paper dust with a graph. It is a schematic exploded view explaining exchange of a blade. It is a schematic perspective view which shows the shape of a cutter when the material of a cutter is ceramic. It is a schematic perspective view which shows the shape of a cutter when the material of a cutter is made into diamond.

Explanation of symbols

A Paper dust measuring device, 1 paper mounting table, 2 slide rail for slide member, 3 slide member, 4 tool post, 5 connecting member (tool), 6 tool post lifting rail, 7 tool holder, 8 mounting screw, 9 Toride

Claims (12)

In the method for measuring the amount of paper dust in which the contact member is slid on the surface of the measurement paper, the paper powder released from the measurement paper by contact of the contact member is collected, and the amount of the collected paper powder is measured as the amount of paper dust.
A paper dust measuring method, wherein a blade attached to the measuring paper so as to be replaceable is used as the contact member to collect the paper dust. In the paper dust amount measuring device, the contact member is contacted and slid on the surface of the measurement paper, the paper powder separated from the measurement paper by the contact of the contact member is collected, and the amount of the collected paper powder is the amount of the measured paper powder.
A paper powder comprising: a tool post that supports the contact member that slides in contact with the measurement paper; and a slide member that slides on the slide rail for the slide member integrally with the tool post. measuring device.   The paper dust measuring device according to claim 2, wherein the contact member is in contact with the measurement paper at a ridge line and collects paper dust from the measurement paper.   3. The paper dust measuring device according to claim 2, wherein the contact member is a blade, and the blade is made of ceramic.   The paper dust measuring device according to claim 2, wherein the contact member is a blade, and the blade is made of diamond.   The paper dust measuring device according to claim 2, wherein the contact member is a blade, and the blade is made of a stainless material.   The paper dust measuring device according to any one of claims 2 to 6, wherein a contact pressure at which the contact member comes into contact with the measurement paper is 5 kg or less. In the paper dust amount measuring device, the contact member is contacted and slid on the surface of the measurement paper, the paper powder separated from the measurement paper by the contact of the contact member is collected, and the amount of the collected paper powder is the amount of the measured paper powder.
A tool rest that supports the contact member that slides in contact with the measurement paper; and a slide member that slides on the slide rail for the slide member integrally with the tool rest. An apparatus for measuring paper dust, wherein the measuring sheet is in contact with the measurement sheet at a ridge line, and a contact angle between the ridge line of the contact member and the measurement sheet is in a range of 5 to 45 degrees.   The paper dust measuring device according to claim 8, wherein the contact member is a blade, and the blade is made of ceramic.   9. The paper dust measuring device according to claim 8, wherein the contact member is a blade, and the blade is made of diamond.   9. The paper dust measuring device according to claim 8, wherein the contact member is a blade, and the blade is made of a stainless material.   The paper dust measuring device according to any one of claims 8 to 11, wherein a contact pressure at which the contact member comes into contact with the measurement paper is 5 kg or less.

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