JPS61257063A - Manual subscanning type reader - Google Patents

Abstract

PURPOSE:To make a device compact and to improve operability by providing a timing pulse generating means for generating the main scanning timing pulse of an image pickup element and a subscanning guide means for guiding the opening and closing of an opening section and the subscanning. CONSTITUTION:In case of performing a reading operation, initially, a subscanning guide means 15 is pulled out to form a position opening an opening section 17a. An original is pressed by a magnet and adsorbed by the fixed substance of a magnetic material to fix the end section of the means 15. Then, the original and the position, and inclination are adjusted to set a manual subscanning type reader with respect to the original and manually subscan in a direction as shown by an arrow D. An optical detecting means 20 comprising a photosensor 20a, and a light emitting diode 20b detects a transparent and translucent section 15a and transmits a signal to the timing pulse generating circuit of a circuit P plate 16. By this signal, a timing pulse is fed to a driving circuit and an image pickup element 11 is read and driven and in accordance with a subscanning feed, the original is successively read and scanned. Thereby, the reader can be made compact and the operability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention houses a reading means in a housing, performs main scanning electrically, and manually moves the housing for sub-scanning in a direction perpendicular to the main scanning direction. The present invention relates to a manual sub-scanning type reading device that performs reading using a manual sub-scanning method.

Conventional technology A manual sub-scanning type reader has a reading means housed in a housing, and the housing is entirely manually moved in the sub-scanning direction for reading. A special opening is required. In addition, when performing sub-scanning manually, it is difficult to make it go straight, and if done manually, it meanders and distorts the read information, so generally a sub-scanning guide member is provided to make it go straight. Furthermore, since sub-scanning is performed manually, it is difficult to perform sub-scanning at a constant speed, and it is necessary to perform main scanning in synchronization with a fixed amount of sub-scanning feed. Main scanning is started accordingly.

Since there is an opening for reading on the bottom, in order to protect the inside from the opening when not in use or to prevent dust from entering, conventionally the housing 2 is attached to a flexible thin plate member 1 as shown in Fig. 4. A window 11L'ii slightly wider than the opening 21L is provided, and the opening 21L is opened and closed by moving this window 1a. One end of the thin plate member 1 is fixed to a rotating shaft 3a of a binion 3, and the thin plate member 1 is moved by rotation of the binion. The pinion 3 is engaged with the rack 4 and is rotated forward and backward by movement of the rack 4 in the direction of arrow B. When not in use, the rack moves in direction B, and the window 1a moves from the opening 24 to close the opening. In use, as shown in FIG. 4, when the opening surface comes into contact with the document 6, the rack 4 moves in the direction of the arrow and drives the pinion, positioning the window 1a of the thin plate member 1 at the opening 2a and opening 2.
It was configured to open 1L'i (for example, JP-A-5
6-164476). In addition, as shown in FIG. 5, a wide belt-shaped thin plate member 6 is used to prevent meandering during sub-scanning.
was stored in the casing 2, and the casing 2 was read while being pulled out, or read and scanned when the casing was pulled out and returned.
6-40976). Further, as shown in FIG. 6, opaque marks are provided at equal intervals on the outer circumference of the transparent disk 7, and an optical detection means 8 (for example, a combination of a light emitting diode and a photosensor) is provided so that the document surface With the sub-scanning feed of the disc 7, the optical detecting means 8 sequentially detects the marks by rotating the disc 7 completely through the roller 9 and generating a signal to detect the mark, and based on this signal, the main scanning is performed as the mark is moved by a predetermined amount. (For example, Japanese Patent Laid-Open No. 56-'33772). As mentioned above, conventional manual sub-scanning type reading devices house each necessary function as a separate and independent structure.

Problems to be Solved by the Invention In such a conventional configuration, each component must be housed as an independent component inside the device, resulting in a problem that the device becomes complicated and large. Furthermore, as the device becomes larger, there is a problem in that manual sub-scanning operability deteriorates.

Means for Solving the Problems In order to solve the above problems, the present invention provides an image sensor, a light source, an optical system, a drive circuit for the image sensor, and a timing pulse generator for generating a main scanning timing pulse for the image sensor. This is a manual sub-scanning type reading device including a sub-scanning guide means for opening/closing an opening and guiding the sub-scanning.

Operation With the above-described configuration, the sub-scanning guide means,
By configuring the timing pulse generating means and the opening/closing of the aperture in a relationship with each other, the space for these functions can be reduced, so that the entire manual sub-scanning type reader can be downsized. Also, the miniaturization allows for improved manual sub-scanning operability.

Embodiment FIG. 1 is a sectional view showing an embodiment of a manual sub-scanning type reading device of the present invention. In FIG. 1, 11 is an image sensor in which a plurality of photoelectric conversion elements are arranged in the main scanning direction; 121L;
12b is a light source that linearly illuminates the reading position of the original 13 over the reading width of the image sensor 11; 14 is a SELFOC lens array (trademark of Nippon Sheet Glass Co., Ltd.), etc., which images the image of the original surface onto the image sensor 11; A light guide that images at the same magnification, 15
16 is a belt-shaped sub-scanning guide means made of a flexible thin plate that guides manual sub-scanning so that it moves straight without meandering; 16 is a circuit P board; these are housed in a housing 17; The photoelectric conversion element array length is the same as the width, and the contact type image sensor is configured so that the photoconductor 14 forms an image of the original surface at the same magnification on the element and reads it. It is electrically connected to the circuit board 16 for processing the read signal. Light source 121L
, 12b is configured such that a plurality of light emitting diodes are arranged in the main scanning direction, and a cylindrical lens is provided to efficiently irradiate the entire reading surface, so that the light from the light emitting diodes is focused in a line at the reading scanning position of the original 13. ing. Housing 1T
is the reading of the image sensor 11 and the light source 1 on the contact surface with the original 13.
An opening 171L' (z) is provided in the reading area so as not to interfere with illumination of the document surface of 2L and 12b.

The sub-scanning guide means 15 has one end connected to the housing 1 as shown in FIG.
It is fixedly wound around a shaft 18 which is rotatably attached to a shaft 7, and is biased in the direction of arrow C by a spiral spring 19. The sub-scanning guide means 16 is a transparent resin film, and opaque patterns 15a4 are regularly arranged at equal intervals on a part of the film.

The sub-scanning guide means 16 has one end that can go in and out of the casing 17, and has a stopper member 15b made of a magnet at the end located outside the casing 17, and when not in use, the casing is moved by a biasing force in the direction of arrow C. Stopper 16b on 170 open bottom 17b part
It is locked in place and ready to be pulled out at any time.

Further, when in the standby state as shown in FIG. 2, the belt-shaped sub-scanning guide means 15 is configured to close the opening 171L'jz of the housing 17 to protect the inside. Sub-scanning guide means 1
6 has a notch 1 that is slightly wider than the opening 171L.
5C'i is provided, and when the sub-scanning guide means 16 is pulled out, the opening 171 is opened and becomes ready for reading.

A photosensor 201L and a light emitting diode 20 are placed at positions corresponding to the arrangement portion of the opaque portion 16a of the sub-scanning guide means 16.
An optical detection means 20f consisting of b is provided, and a photosensor 2
0+L sends a signal that intermittently detects the light from the light emitting diode 20b to the circuit means that generates a timing pulse on the circuit board 16, so that even if the manual sub-scanning feed speed changes, it will continue to move with the amount of movement in the sub-scanning direction. The main scanning timing pulse for the image sensor 11 can be stably generated to drive the image sensor 11. As described above, the opaque pattern portion 16& of the sub-scanning guide means 5, the optical detection means 2o, and the circuit board 16 are provided with a circuit means (not shown) for generating a timing pulse by manually inputting a signal from the optical detection means 20. figure)
This constitutes timing pulse generation means for causing the image sensor 11 to read and scan. 21, 22, and 23 are guide rollers of the sub-scanning guide means 16. Guide rollers 21 and 22 guide the sub-scanning guide means 15 along the inner wall of the housing 17.

The reading operation in the manual sub-scanning reading device configured as described above will be explained.

First, the sub-scanning guide member 15 is pulled out to the position where the opening 1a is opened, the document is held down by a magnet, and the original is attracted to a fixed object made of magnetic material (not shown, such as a desk), and the end of the sub-scanning guide member 16 is At the same time, the position and inclination of the original are adjusted, and a manual sub-scanning/reading device is set for the original. Next, when sub-scanning is performed manually in the direction of the arrow in FIG. 1, the optical detection means 2o becomes transparent and the opaque portion 15! Li is detected, a signal is sent to a timing pulse generation circuit, a timing pulse is sent from the timing pulse generation circuit to a drive circuit, and the image pickup device 11 is read and driven to read and scan the first original according to the sub-scan feed.

Also, before reading, the sub-scanning guide means 1 is moved in the direction of the arrow.
6 can be pulled out long enough to roughly confirm the reading position using the notch 150, and reading can be performed while manually sub-scanning in the direction opposite to the arrow direction.

In this embodiment, the optical detection means 20 is of a transmissive type, but it goes without saying that it may also be of a reflective type, in which the sub-scanning guide means 15 is provided with a reflective member such as aluminum foil, and the light emitting diode 20b and photosensor 20&i are provided on one side. Nor.

Effects of the Invention As described above, according to the present invention, necessary functions can be easily configured in a small space, and the device configuration can be simplified and downsized.

Furthermore, by downsizing the device, the operability of manual sub-scanning can be completely improved, which is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a manual sub-scanning type reader according to an embodiment of the present invention, FIG. 2 is a perspective view of the sub-scanning guide means of the same device, and FIG. 3 is a drawn-out state of the sub-scan guide means of the same device. FIG. 4 is a sectional view of a main part of an opening opening/closing mechanism of a conventional reading device, and FIG. 6 is a sectional view of a conventional sub-scanning guide means.
FIG. 6 is a cross-sectional view of the main parts of the conventional timing pulse generating means.
3...Pinion, 4...Rack, 6,
16... Sub-scanning guide means, 7... Disc, 9... Roller, 6, 13... Document,
11...Image sensor, 121L, 12b...
...Light source, 14...Light guide, 16...
...Circuit P board. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 3Q Figure 4 Figure 5

Claims (3)

[Claims] (1) An image sensor that electrically scans itself by arranging a plurality of photoelectric conversion elements in a row across the reading width (main scanning direction);
A light source that illuminates a document surface, an optical system that forms an image of the document onto the image sensor surface, a drive circuit that drives the image sensor, and a main scan timing pulse for the image sensor that is generated by manual sub-scan feeding. A casing that houses a timing pulse generation means, the imaging device, a light source, an optical system, a drive circuit, and a timing pulse generation means and has an opening in a reading area, and a rotatable case that is rotatable and is biased to rotate in one direction. One end is fixed to a shaft, the winding is made such that it can be freely pulled out and stored in the housing, and covers the opening of the housing when stored in the housing, and covers the opening of the housing when pulled out from the housing. 1. A manual sub-scanning type reader comprising a flexible sub-scanning guide means in the form of a belt having a cutout portion having at least a reading width in the longitudinal direction so as to release the cover. (2) The timing pulse generating means provides optically transparent and opaque parts regularly in the longitudinal direction on a part of the belt-shaped sub-scanning guide means, and optical detection means detects the transparent and opaque parts, and the optical 2. The manual sub-scanning type reading device according to claim 1, further comprising circuit means for generating a timing pulse based on a signal from the target detection means. (3) A manual sub-scanning type reading device according to claim 1, characterized in that a permanent magnet is provided at an end of the sub-scanning guide means located outside the housing.