JPS59204366A - Copy machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a copying machine, and particularly to one having a plurality of image reading sensors and a corresponding number of recording elements.
A copying machine with a simple structure, inexpensive, and suitable for office use ((
related.

[Prior art]

Conventional general-purpose copying machines include &X diazo type, electronic copying type, and photo printing type, but all of these are semi-fixed type, large desk type, and expensive, so they are not suitable for personal hand-held copying. A thermal copying machine that uses thermal recording paper and makes copies using an elemental thermal head as a recording element has been considered as a suitable machine.

FIG. 1 shows an example of such a conventional thermal copying machine, in which the right side is mainly the reading and information processing means, and the left side is the recording means. Namely.

/ is a document feed roller, 2 is a recording paper feed roller, and roller / and rollerco are coaxially rotated at a constant speed. 3 is a manuscript paper moved by roller l, 'lIt'
This is a recording sheet that is moved by an L roller, and an optical focusing means such as a lens 5 is provided directly above the sheet 3 in contact with the roller, and the image information 3A on the manuscript sheet 3 is The light is received by the reading sensor array B through the lens 5, and an image 6A is formed.

The output terminals t of the respective sensors in the sensor row 7 and 7 are amplifiers to which the read signal from the sensor output terminal 7 is supplied, and the respective amplifiers g are independent of each other. The amplified recording signal is supplied to the recording element array 9 on the recording means side.

The recording element row 9 includes, for example, a plurality of heat-sensitive elements 9A arranged in a row, and constitutes an elemental heat-sensitive head.

Corresponding recording signals are supplied from the sensors of the read sensor array 6 to the heat-sensitive cord qA. On the other hand, since a thermochromic material is coated on the surface of the recording if in contact with the head 9, the above-mentioned recording signal is applied to the position on the recording paper holder corresponding to the image information 3A on the document paper 3 by means of a spatula. Image 4 (A) is formed accordingly.

Although a copying machine configured in this way can be made quite compact and portable, it requires an extremely large number of sensors, recording elements, and amplifiers, and therefore the connection wires between these elements are too large. Since it involves a huge number of pieces, it is expensive.

Yet again. Since the connecting lines are arranged in a limited space, there is a limit to increasing the copying resolution.

Therefore, a copying machine can be considered that can maintain similar functions by limiting the number of sensors, recording elements, and the like.

Figure 2 shows an example of such a copying machine.
It has two optical sensors, two recording elements, two amplifiers, etc. i.e. -/AA:t'c; and /6
Reference numeral B designates image reading sensors 1, such as optical sensors, provided at predetermined intervals on the sensor holding plate /6, and trap image information 3A on a line connecting these optical sensors /&A and /6B.
The length of the image 6A corresponding to 1 image information 3A is set to be L, which is % of the length of one image information 3A.

gA and B IX optical sensor /AA and /AB amplifier connected to output terminals /7A and /7B, /9A
and/? Head plate/? with an interval corresponding to the length of Bt engineering image information 3A? This is a recording element placed above the recording element, and the recording signal from each amplifier gk and gB is sent to the recording element/
Supplied to FA and /FB.

20 and 2/G'! The cam driven shafts, here and 23, which reciprocate in the direction of the sensor holding plate/6 and head plate/9t, respectively, in the direction of the roller shaft are both cams attached to the camshaft moss. The sensor holding plate/6 and the head plate/9'1 are reciprocated in synchronization with each other through 2θ and C/. Thus, while the holding plate/6 is reciprocated at a pitch L, the head plate/? So what about the recording element? The reciprocating movement is performed at a pitch of A and /9B, thereby forming an image llA on the recording paper.

Note that -25A and 2j'B)X are return springs provided on the holding plate 1L side and the head plate/9 side, respectively.

That is, the above-mentioned copying machine has two optical sensors /6A and /4B disposed at a predetermined interval in the direction of movement, and a recording element /6 to which recording signals from the respective optical sensors /AA and /AB are input. qA and/? By determining the spacing between the two optical sensors corresponding to the intervals between the optical sensors, and moving these recording elements/fk and 79B in synchronization in the direction of their arrangement, a copying machine similar to that shown in Fig. 1 can be obtained. This is an attempt to maintain functionality.

However, based on this concept, problems with copying accuracy and printing quality still remain with copying machines.

In other words, in this type of device, a great deal of importance is placed on the accuracy of its reciprocating motion.

I1. Distance between sensor /6A and /AB and recording element/
? If the distances between A and /VB are 10r and m, respectively, then the minimum resolution on the optical system side is 1.

Assuming that the wire is a thin wire of 1//m, vt, the reciprocating motion of 106 must be performed with an accuracy of approximately ±5θμm, and this must be performed mechanically at high speed, and such a precision mechanical configuration is expensive. .

Yet again. If the above-mentioned accuracy cannot be obtained, blank spaces parallel to the document feeding direction and black streaks will occur, resulting in quality deterioration.

〔the purpose〕

The purpose of the present invention is to address these problems and to provide a copying machine that can always produce high-quality, high-quality images without having its copying accuracy affected by mechanical operations, and that is simple and inexpensive. It is about providing.

In order to achieve such an object, the present invention has a recording element that maintains a predetermined interval, and an image reading sensor that maintains the same predetermined interval, are both arranged in the direction of their reciprocating motion and combined into an integral structure, and this integral structure is A mechanical means for reciprocating in a wider range than the above-mentioned predetermined interval is provided, and a position detecting means is provided for detecting a position corresponding to the predetermined interval during the reciprocating movement by this mechanical means, and a position detection signal from this position detecting means is provided. The electrical connection between the recording element and the optical sensor is controlled accordingly.

〔Example〕

The present invention will be explained in detail below based on one drawing.

FIG. 3 shows an embodiment of the invention. here.

, 26 is a sensor holding plate having reading sensors 2Ak and λAB, and 29 is its recording element 2? A and Ko? This is a head plate having B. In this example, a case is shown in which there are two sensors and two recording elements.

30 is the sensor holding plate 26 and the head 1 plate J? A cam driven shaft 31 is provided on the retaining plate roller and head plate 29, which are integrally structured by the shaft 3Q, and the cam 32 connects this integral structure through the cam driven shaft 31. Move something back and forth.

Furthermore, axis 30Kf: interval index as shown in Fig. ,
? A mark member 33 having a mark A is attached, and this mark member 33 reciprocates together with the coupling shaft 3o. 3q is installed at a position facing the mark member 330.

This is a detection plate having a reading sensor 3' for detecting the amplitude of the reciprocating motion of 6 30, and a recording width control device 35 is constituted by the mark member 33, the detection plate 3, and the trap.

That is, the recording width is controlled as described later through this control device 3j. 36 is a switching element, and the switching element 36 connects the sensors 26A and 24B and the corresponding recording elements 5'A and 29.
A detection signal from the reading sensor 3A is amplified by an amplifier 37 and supplied to the switching element 36.

In addition, in the mark member 33, the index, ? ,? Distance between LA and image reading sensor 2AA and roller B,
And one for the recording element 29? For example, when the index 33k is located at a position opposite to the optical sensor 34tk, the optical sensor ? The detection signal from 'i'A is amplified by amplifier 37 so that a 1H'' signal is supplied to switching element 36.

Yet again. The switching element 36 is set so that it is switched off by a 'H' signal and turned on by a '%L' signal.

To explain the operation of a copying machine configured in this way, the head plate 2 has an integral structure. The sensor holding plate 2 and the sensor holding plate 2 are reciprocated by the cam 3 via the driven shaft 31, and the stroke of the reciprocating movement is at an interval LA.

#i: The width is slightly larger than the circle, and recording is performed using the recording width control device 35 and the switching element 36 to control the recording width LA.
This is done only within the scope of. Therefore, the sensor holding plate/6 and the head plate l? as in the example shown in FIG. There will be no double images on the image due to mutual errors due to reciprocating motion between the two.

In this example, in the recording width control device 3S.

Although the mark member 33 is made to reciprocate together with the integral structure, instead of this, the amplitude detection plate 31I having the optical sensor j+A is made to reciprocate, and the mark member 33
It goes without saying that the same effect can be obtained by fixing the two in opposite positions).

Sweet. In addition to optical position detection consisting of the mark member 33 and photoelectric sensor 3'lA, mechanical position detection such as a combination of a microswitch and its actuator, or position detection such as a combination of a Hall element and a magnet can also be applied. be.

It is possible to increase the number of reading sensors and recording elements,
Furthermore, it is natural that the present invention can be applied to inkjet printing and stylus printing other than thermal recording.

In addition to the movement mechanism using the cam 32, a stepping motor, magnetic solenoid, etc. can also be used.

Furthermore, it is also possible to fix the original paper and the recording paper and move the optical sensor and the recording element.

〔effect〕

As described above, according to the present invention, the IC has an integrated structure r (combined) in which a plurality of recording elements and the same number of image reading sensors are arranged at predetermined intervals in the reciprocating direction, and this integrated structure is described above. A mechanical means for reciprocating in a wider range than the predetermined interval is provided, and a detecting means for detecting the recording width during the reciprocating movement by the mechanical means is provided, and the recording element group and the sensor are detected in accordance with the amplitude detection signal from the detecting means. Since the electrical connection of IBl with the group was controlled.

There is no need to provide a large number of reading sensors and recording elements as in the past, which not only makes it possible to obtain a hand-held copying machine that is inexpensive and has a simple structure, but also eliminates quality deterioration such as double printing caused by mechanical reciprocating motion. can be prevented and high-quality copies can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an outline of the structure of a conventional thermal copying machine, Fig. 2 is a perspective view showing an outline of the structure of a conventional hand-held heat-sensitive copying machine, and Fig. 3 is a perspective view showing an outline of the structure of a conventional hand-held heat-sensitive copying machine. FIG. 7 is a perspective view showing an example of the structure of the copying machine of the present invention, and FIG. 7 is a perspective view of a mark portion having interval indicators. /2.2...roller, 3. 'I...paper. 3A...Image information, riA...Image. S...Lens, 6...Reading sensor row. AA...Image formation, 7...Output terminal. g, fA, gB...amplifier, w...recording element array. ? A...thermal element + IAA, /AB・
...Light sensor, -1, 23...Cam% Koda...Cam shaft. , 2S, 2! ;A, 2SB...return is 1.26...
-Sensor holding plate 1, IAA, 26B...reading sensor. Utah...Head board, CoqA, 29B...
Recording element, 3θ...axis, 3/...
Driven axis. 3.2...Cam, 33...Mark J
t, 33A...index, 31...amplitude detection plate. ,? lIA...Sensor. 35... Recording width control device. 36... Switching element, 37... Amplifier.

Claims (1)

[Claims] (+) A combined body in which a plurality of recording element rows arranged at predetermined intervals and the same number of image reading sensor rows are combined in the same direction, and a combination that reciprocates the combined body in the same direction. 1. A copying machine comprising body actuating means. t2+ In the copying machine as set forth in claim 1, f! 1 (controls the electrical connection between the ratio recording element array and the reading sensor array, and during the reciprocation of the combination, only the Itjl of the width is connected to the reading sensor array and the recording sensor array. A copying machine that is on standby and includes a control means for electrically connecting an element array to perform copying. (3) In the copying machine according to claim 1, the detection means is a It has a width detection sensor and a mark member having an index for changing the output of the recording width detection sensor, one of the mark member and the recording width detection sensor is reciprocated together with the combined body, and the other is moved back and forth with the combined body. A copying machine characterized by being fixed at facing positions.