JPS58134762A - Information processor - Google Patents

Abstract

PURPOSE:To obtain an information processor capable of equalizing the pressure distribution in the contact line and contact area between a head and a recording medium supporter by a method in which a head holder is pivotally supported under a specific condition and the pressing force is acted on a specific place of the recording medium supporter side. CONSTITUTION:One end bearing 17 of a head holder 1 is of a relative position movable type, and the head holder 1 is pressed from the upside through a coil spring 18. When the resultant force of pressing forces by the coil spring 18 acts on a straight line (l1) connecting the middle point C in the longitudinal direction of the roll 9 of the contact portion 19 between the bearing 16, the head 8, and the roll 9, or its neighborhood, uniform contact line pressure and uniform contact area can be obtained in the longitudinal direction in the contact portion 19.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applied to, for example, a facsimile T9 device,
The present invention relates to an information processing device that can write information to or read information from a recording medium.

Conventionally, in this type of information processing device, as shown in the first factor and FIG. By doing so, the head holder d is rotatably provided. Further, an information processing element group f for writing or reading the head is provided on the free end side of the head holder d.
. . , and by supporting both ends of the support shaft g in the reeler support frame through the bearing holes l and i formed in k, at least the surface layer is made of an elastic member. A roll j as a recording medium support member made of is arranged. Further, the free end side of the head holder is pressed by a head pressing spring (not shown) to press the information processing element groups f and - of the head against the roll j.

Then, by interposing and transporting a recording medium P such as a recording paper or the like at the contact portion between the information processing element group f- of the head and the roll, information can be written or read on the Joki recording body P. It is supposed to be done.

However, in the past, the relative positions of the bearing portions at both ends of the roll 1 and the bearings WIAt and WIAt and t at both ends of the head holder d are fixed.

'1.1. .

Therefore, if the parallelism between the spindle g of the roll and the spindle l of the head holder is not correct.

The contact line pressure between the head holder and the roll j becomes uneven in the direction of the 11 to 10" edges, and as a result, the width of the contact surface becomes uneven as shown by the shaded area in Figure 3, or in the worst case There will be a one-sided hit. Then, when feeding the recording medium P such as a recording paper or a manuscript, there is a risk that the recording medium P may be rescued (skewed), causing a jam or damaging the recording medium P.

In addition, in the case of thermal recording, for example, there is a quadratic relationship between the contact line pressure between the head e and the roll j and the printing density, which has an adverse effect on the writing and reading of information.
and roll j are tilted, and there are parts where the contact line pressure does not rise sufficiently, resulting in blurred printing in these parts.

Therefore, a relative position fine adjustment mechanism is required for one of the bearing parts t, t, of the roll j as a head holder or a recording medium support member, and a skilled worker is required for the work that increases the number of parts. “.

However, the present invention has been developed based on the above circumstances, and its purpose is to achieve an extremely simple method. Although the configuration is inexpensive, the contact line pressure distribution and contact surface width between the RAD, where the information processing element group is arranged, and the recording medium-supporting member are uniform, and information processing on the recording medium can be performed in a stable state. The present invention aims to provide an information processing device that can obtain the following information.

Hereinafter, the present invention will be explained with reference to an embodiment shown in FIGS. 4 to 6. In FIG. 6, l is a rectangular plate-shaped head holder;
This head holder l has one end 1m of a support shaft 2 protruding from both sides of one end supported by a bearing hole 4 of a support frame 1, and the other end jbv supported by a long hole or slide guide groove 6 of a support frame 5. This allows it to rotate.

Further, a recessed portion is formed at the lower side of the free end of the head holder l, and an information processing element group 7 for writing or reading is formed.
A head 1 having... is embedded therein.

Further, a roller as a recording medium support member is disposed so as to face the information processing group 1 of the head 8 so that its axial center line coincides with the information processing group 1 . Both ends J4F of the spindle 10 of this roll 9 are connected to the roller support frame 11. Bearing hole t s e J formed in lj
It is rotatably supported by a and is rotated by a drive mechanism (not shown) at a circumferential speed that matches the feeding speed of a recording medium P such as recording paper or an original document.

Specifically, both bearing portions t4*J5# of the roll 9 and one end bearing portion 16 of the head holder l are relative position fixed bearings that can only rotate around the support shaft 102.
The other end bearing portion JP of the head holder l is a relative position movable bearing. When the head holder l is pressed from the upper surface side via the coil spring 18 as a biasing body, the pressing force at this time is the one end of the head holder l relative position fixing shaft 1
6 and a contact portion 19 between the head 8 and the roll 9. Then, as shown in FIG. 5, the resultant force of the pressing force by the coil spring 18 is applied to the relative position fixed bearing 16
9 at the midpoint in the longitudinal direction of the roll 9 (on or near the straight line tI that connects the By allowing this to work, a uniform contact line pressure in the longitudinal direction at the contact portion 19 and a uniform contact surface width as shown by diagonal lines in FIG. 5 can be obtained.

This will be explained using mathematical formulas with reference to FIG. first,
The center line of the contact portion l# along the axis of the roll 9 is 1. and one end thereof (relative position fixed bearing 71 of head holder l)
The side corresponding to 1) is the origin 0. Let A be the other end. Then, if the X-axis is in the direction along the OA direction, that is, t, and the relative position fixed bearing 16 is B, then the y-axis is taken in the direction of B, and the coordinates of one point are (a @ * 0), and the point Assuming the coordinates of B are (0, bt), the point where the pressing force (resultant force F) acts. ,) locus m v<a. , 5゜)・载１尤. Let G'(a*'-bs) be the intersection of a straight line t parallel to the 8 axes and a straight line connecting points A and B.

At this time, l・′=vomit”!・It is al.

1 When the contact line pressure distribution at the contact portion 1# between the head 1 and the roll t is f (maximum), the following equation (1
) holds true.

Also, due to the balance of moments around yIIIB,
The following formula (to) holds true.

Assuming that f (x) is approximately a straight line, f (X) ” m X + 11 @=
−”−…−−−−−−−−−@l) and (l), (
2)) If we find the constant set, ■ from the formula, we get ゛.

□1 Here, the point of application O of the resultant force of the pressing force is the straight line t connecting the midpoint C of the center line t- of contact -1# and the relative position fixed bearing B,
If it is above, i.e. 2 2 b.

In this case, from equation (4), m-tension O is obtained.

This shows that f(X) is defined regardless of summer, that is, the contact line pressure distribution is uniform in the rider direction of the roll 9.

In addition, at this time, f (x) becomes f (x) = n a1b@, and the smaller b is, that is, the closer the point on which the pressing force acts is to the contact part 19, the larger the contact line with the same pressing force. This shows that pressure can be obtained efficiently.

In FIG. 6, the X-axis and the y-axis are set to be at right angles, but the results will be the same even if they are not at right angles.

Thus, the head 8 in which the information processing element group 2...
The contact line pressure distribution and contact surface width of the contact portion 19 between the roller 9 and the recording medium supporting member can be made uniform, and information processing on the recording medium P interposed in the contact portion l# can be performed in a stable state. It will be done.

Note that although the relative position movable bearing 12 of the head holder l is composed of a support island protruding toward the head holder l side and a slide guide groove 6 consisting of an elongated hole formed in the support frame 5, the present invention does not incorporate this. For example, the structure shown in FIGS. 7 to 10 may be used, that is, S7
Slide guide groove 6 in the head holder l@ as shown in the figure.
Alternatively, as shown in FIG. 8, a slide guide consisting of a cut groove instead of a long hole may be formed on the support frame 5 side. A groove 6' may be formed, or a slide guide groove 6' consisting of a cut groove may be formed on the head holder l side as shown in FIG.

Furthermore, as shown in FIG. 10, slider 1 is attached to support shaft s2.
0 may be installed by slidingly guided by a guide groove 611 formed in the support frame 5.

In the description of the other embodiments described above (FIGS. 7 to 1O), the same parts as those of the above-mentioned embodiment are given the same reference numerals, and the explanation thereof will be omitted.

In the above-mentioned embodiment, the relative position fixed bearing portion 16 is constructed by fitting one end portion 2 of the support shaft I of the head holder I into the bearing hole 4 so that it cannot move in the radial direction. However, when each of the both ends Jl#Jb of the support shaft 2 is rotatably displaceable around the contact part 1#, and when the head holder l is rotatably displaced around the contact part l#, the first The bearing part whose movement is regulated is fixed in relative position by the bearing part 16.
The same purpose can be achieved by doing as follows.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the present invention.

As explained above, the present invention provides a head in which a group of information processing elements is arranged on the free end side of a rotatably supported plate-shaped head holder, and a group of information processing elements arranged opposite to the head. In the information processing device, information can be written to or read from the recording medium by interposing the recording medium in the contact portion with the recording medium supporting member, wherein the bearings are formed on both sides of the pivot end of the head holder. At least one of the bearing parts is made to be a relative position movable bearing part that can be rotated around the contact part, and the other bearing part whose relative position is fixed is connected to the midpoint of the contact part. A biasing force of a biasing body that presses the head holder toward the recording medium supporting member is applied on or very close to the connecting line.

Therefore, it is an extremely simple and inexpensive configuration that does not require a conventional bearing position fine adjustment mechanism.
Therefore, the contact line pressure distribution and the contact surface width between the head in which the information processing element group is arranged and the recording medium 1 support member can be obtained uniformly, and information processing on the recording medium can be performed in a stable state.

[Brief explanation of drawings]

1 to 3 show a conventional example, with FIG. 1 being a schematic side view and FIG. 2 being a schematic plan view. ! Figure s3 is an explanatory diagram showing the non-uniformity of the contact surface width, Figures 4 to 6 show an embodiment of the present invention, Figure 4 is a schematic side view, and Figure 5 is a schematic plan view. 6 are explanatory diagrams for explaining the processing, and FIGS. 7 to 10 are perspective views showing other different embodiments of the main parts of the present invention. l... Head holder, 1... Information processing element, 8...
- Head, 9... Recording medium support member, 16-- Relative position fixed bearing, 11... Relative position movable bearing, 11...
Biasing body, 19... contact portion, 11... line, C-- middle point, P-... recording medium. Applicant's agent Patent attorney Takehiko Suzue $111 1g3 Figure ρ

Claims (1)

[Claims] α) Freedom of rotatably supported plate-shaped head holder -
A head with a group of information processing elements arranged on the side is provided, and the recording medium is interposed at the contact portion between the head and a recording medium supporting member disposed opposite to the head, thereby writing or reading information to or from the recording medium. In the information processing device, at least one of the bearings formed on both sides of the pivot end of the head holder is rotatably movable about the contact portion. At the same time, the biasing force of the biasing body that presses the head holder toward the recording medium support member is applied on or very close to the line connecting the other bearing part whose relative position is fixed and the midpoint of the contact part. Characteristic information processing device. Claim 1, characterized in that the position where the biasing force of the biasing body acts is set at a position corresponding to the contact portion.
The information processing device described in the section. (3) The relative position movable bearing is constituted by engagement between a slide guide groove formed in either the head holder or the support frame and a support shaft formed in the other. Range 1st or 2nd
The information processing device described in the section.