JPH04273761A - Original reader and information processor having its reader - Google Patents

Abstract

PURPOSE:To realize an original reader which can adjust the focus of a short focus image-forming element array and which can fix the short focus image- forming element array where deformation does not occur in the original reader having the short focus image-forming element array. CONSTITUTION:The short focus image-forming element array 14 adjusts a focus between an original (not illustrated) which is closely adhered to cover glass 11 and a sensor array 13 and it is pressed to a frame 12 as a supporting body with a rigid member (stop screw) 15 so as to be fixed. Furthermore, an elastic member (adhesive) 16 is provided for the whole area of a surface which is pressed to the frame 12 with the rigid member 15 and which is brought into contact with the frame 12 so as to fix the member 16. Thus, the deformation of the short focus image-forming element array 14 can be prevented.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document reading device and an information processing device having the same, which can be used in facsimile machines, copying machines, scanners, and the like.

0002

[Prior Art] Conventionally, as a document reading device used in facsimile machines, copying machines, scanners, etc., a contact image sensor uses a sensor array to form a one-to-one image of the read image and reads it at the same size as the read document. There is.

This contact image sensor is composed of a sensor array, a short-focus imaging element array, a light source, a cover glass and frame for holding a moving document, and other parts. It is housed inside the camera and is incorporated as a close-contact image sensor unit.

[0004] In such a sensor array, a short focus imaging element array, or a contact type image sensor in which a light source is built into the frame, in order to focus the reflected light from the original onto the sensor array, the focal point of the short focus imaging element array is Adjustment work is required, and the short focus imaging element array must be fixed to the frame after focus adjustment.

In this case, the conventional method for fixing the short focus imaging element array to the frame is to press it against the frame with a rigid member.

[0006]

However, as the reading size increases, the short focus imaging element array also expands. Therefore, the deformation of the short-focus imaging element array due to the pressure for fixing it to the frame increases, and the image formation by the short-focus imaging element array changes accordingly, causing the problem that it becomes impossible to read an accurate input image. be.

[0007]Furthermore, when the frame is fixed at multiple points using only rigid members, there is a problem that deformation of the frame occurs.

[0008]Also, there is a method of fixing by pressing with an elastic member, but when fixing the short focus imaging element array using only an elastic member, it is difficult to accurately fix the position of the short focus imaging element array during focus adjustment. The problem is that it is not possible.

[0009]

[Means for Solving the Problems] As a means for solving the above-mentioned problems, the present invention provides a light source, a short focus imaging element array, a sensor array comprising a plurality of photoelectric conversion elements, and a combination thereof. a rigid member for pressing and supporting both ends of the short focus imaging element array against the support; and a rigid member for supporting the short focus imaging element array by pressing it against the support; an elastic member for fixing and supporting the short focus imaging element array on the support body, and the rigid member and the elastic member allow the short focus imaging element array to be fixedly supported on the support body. The present invention provides a document reading device characterized by a fixed array. Further, a set screw is used as the rigid member, and an adhesive is used as the elastic member.

Another object of the present invention is to solve the above problem by providing an information processing apparatus further comprising the document reading device and means for holding the document at the document reading position of the document reading device.

[0011]

[Operation] According to the present invention, as a means for fixing the short focus imaging element array and the frame during focus adjustment of the short focus imaging element array, both ends are supported by rigid members, and the short focus imaging element array and the short focus imaging element array are supported by rigid members. By fixing the element array with an elastic member between the element array and the child array, it is possible to adjust the focus while preventing deformation and to accurately fix it over the entire effective width of the short focus imaging element array.

0012

[Example 1] Fig. 1 shows a typical example of the present invention. In FIG. 1, (a) is a top view of the document reading device, and (b) is a sectional view taken along line XX' in (a). In the figure, 11 is a cover glass that is in close contact with the original, 12 is a frame as a support, 13 is a sensor array, and 14 is a short focus imaging element array, which adjusts the focus between the original (not shown) and the sensor array 13. After that, the rigid member 15 is pressed against the frame 12 and fixed.

Further, an elastic member 16 is provided and fixed to the entire area of the surface that is pressed against and in contact with the frame 12 by the rigid member 15, thereby making it possible to prevent the short focus imaging element array 14 from being deformed. It is.

In this embodiment, the rigid member 15 is fixed using a set screw, and the elastic member 16 is tightly fixed to the frame 12 using an elastic adhesive, so that the frame 12 can be adjusted. This makes it possible to accurately fix the short focus imaging element array 14 in position and to absorb deformation of the short focus imaging element array 14. (Embodiment 2) FIG. 2 is a top view showing a second embodiment of the present invention. In this embodiment, the short focal length imaging element array is fixed by arranging the rigid member 15 at both ends and the elastic member 17 at a position corresponding to the center of the plurality of fixing points of the rigid member 15. This makes it possible to prevent the short focus imaging element array 14 from being deformed. As the elastic member 17, an elastic adhesive is used as in the first embodiment, but in this embodiment, since it is used only in the central portion, a smaller amount is required compared to the first embodiment.

[0015] In addition to the set screw, the rigid member may be a metal bar-shaped member or any other rigid member as long as it is made of a rigid material and has a structure that can be supported under pressure. Furthermore, the elastic member is not limited to adhesives, but may be made of elastic materials such as rubber-like members with strong adhesive force or soft plastics, and which can fix the short-focus imaging element array to the support body. It is fine as long as it is something.

Next, FIG. 3 is a schematic configuration diagram showing an example of a facsimile having a communication function as an image information processing apparatus constructed using the sensor unit 100 having the document reading device according to the present embodiment.

Here, 102 is a feeding roller serving as feeding means for feeding the original Q toward the reading position;
Reference numeral 104 denotes a separation piece for reliably separating and feeding the originals Q one by one. Reference numeral 106 denotes a platen roller which is provided at a reading position with respect to the sensor unit and serves as a conveyance means for regulating the surface of the document Q to be read and for conveying the document Q.

In the illustrated example, P is a recording medium in the form of roll paper, on which image information read by the sensor unit 100 or image information transmitted from the outside in the case of a facsimile device is reproduced. 110
is a recording head as a recording means for forming the image, and various types such as a thermal head and an inkjet recording head can be used. Further, this recording head may be of a serial type or a line type. Reference numeral 112 denotes a platen roller serving as a conveyance means for conveying the recording medium P to the recording position by the recording head 110 and regulating the recording surface thereof.

Reference numeral 120 denotes an operation panel which is provided with switches for receiving operation input as input/output means, messages, and a display section for notifying the status of the apparatus.

Reference numeral 130 denotes a system control board as a control means, which includes a control unit (controller) for controlling various parts, a drive circuit (driver) for the photoelectric conversion element, an image information processing unit (processor), a transmitting/receiving unit, etc. provided. 140 is a power source for the device.

As the recording means used in the information processing apparatus of the present invention, it is preferable to use those whose typical configurations and principles are disclosed, for example, in US Pat. No. 4,723,129 and US Pat. No. 4,740,796. In this method, at least one electrothermal transducer that corresponds to the recorded information and that causes a rapid temperature rise exceeding nucleate boiling is applied to an electrothermal transducer placed corresponding to the sheet holding the liquid (ink) or the liquid path. By applying a drive signal, the electrothermal transducer generates thermal energy, causing film boiling on the heat-active surface of the recording head, resulting in bubbles in the liquid (ink) corresponding one-to-one to this drive signal. It is effective because it can form . Due to the growth and contraction of these bubbles, liquid (
ink) to form at least one droplet.

Furthermore, a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus can be produced by combining a plurality of recording heads as disclosed in the above-mentioned specification. Either a configuration that satisfies the length or a configuration as a single recording head formed integrally may be used.

In addition, a replaceable chip-type recording head that is attached to the apparatus main body enables electrical connection with the apparatus main body and ink supply from the apparatus main body, or an ink-type recording head that is attached to the print head itself. The present invention is also effective when using a cartridge type recording head in which a tank is integrally provided.

[0024]

Effects of the Invention As explained above, the present invention fixes the short-focus imaging element array to a support by a combination of a rigid member and an elastic member, thereby allowing the short-focus imaging element array to be fixed within the effective area of the short-focus imaging element array. This has the effect of making it possible to adjust the focus of the lens, absorb deformation of the short-focus imaging element array, suppress changes in the focal length of the effective area, and obtain accurate imaging.

[Brief explanation of the drawing]

FIG. 1 shows Example 1 of the present invention.

FIG. 2 shows Example 2 of the present invention.

FIG. 3 is a sectional view of a facsimile device as an information processing device having the document reading device of the present invention.

[Explanation of symbols]

11 Cover glass 12 Frame 13 Sensor array 14 Short focus imaging element array 15
Rigid member (set screw) 16, 17 Elastic member (adhesive)

Claims (3)

[Claims] 1. A document reading device comprising: a light source; a short focus imaging element array; a sensor array including a plurality of photoelectric conversion elements; and a support for integrally supporting them; a rigid member for pressing and supporting both ends of the imaging element array against the support; and a rigid member for supporting the short focus imaging element array by pressing it against the support; an elastic member for fixed support, and the short focus imaging element array is fixed to the support body by the rigid member and the elastic member. 2. The document reading device according to claim 1, wherein a set screw is used as the rigid member, and an adhesive is used as the elastic member. 3. An information processing device comprising the document reading device according to claim 1 and means for holding a document at a document reading position of the document reading device.