JPH0323766A - Manual scanner - Google Patents

Abstract

PURPOSE:To improve travel stability when the neighbohood of the end of a thick original is read and to read the original correctly by providing an auxiliary leg with the quantity of protrusion not coming in contact with a plane formed with a roller and a supporting leg between the roller and the supporting leg. CONSTITUTION:When the original is read and moved in a direction of arrow head 11 manually, a device is supported with the roller 6 and the most protruding plane 14 of an inclined supporting leg 13. Also, when the protruding plane 14 passes the rear end of the original 2, the device is supported with the inclined surface 15 of the inclined supporting leg 13, and a supporting position is moved gradually. Since the device is supported with the roller 6 and the inclined surface 15 of the inclined supporting leg 13, smooth travel can be obtained when the protruding plane 14 passes the end part of the original 2, and the stable reading of an image can be performed. In such a way, the smooth travel can be obtained, and the image can be read correctly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field] The present invention relates to a manual scanning device that manually scans and electrically reads a document.

[Prior Art] Manual scanning type scanners are used as devices for capturing images in word processors, personal computers, and the like. Compared to the document-mounted type, it is characterized by being lower in price and having a greater degree of freedom regarding the object to be read. This type of device is provided with a roller that contacts the surface of the document and rotates as it travels, and an encoder that generates pulses in accordance with the rotation of the roller. It is configured to read an image according to the scanning distance by controlling the timing of capturing the image signal read by the COD.

FIG. 2 shows a configuration diagram of an apparatus which is the background art of the present invention.

'f32 In Figure (a), 1 is an LED array for illumination;
2 is the original, 3 is the mirror, 4 is the lens, and 5 is the reading CCD.
6 is a rotatable rubber roller, 7 is a connecting gear, and 8 is a slit plate. A photo sensor 9 is shielded from light by the slit plate 8, and generates ON/OFF pulses as the slit plate 8 rotates in response to the circular movement of the rubber roller 6. As shown in the figure, device C is placed on a thick document (for example, a catalog or magazine) placed on a table 10, and is read while being moved in the direction of an arrow 11.

The device includes a rubber roller 6 and support legs 12 protruding from the bottom.
It is held on top of the document surface.

E Problem 1 However, as shown in FIG. 2(b), when the device moves and the position of the support leg 12 approaches the rear edge of the document 2, and the support leg 12 comes off the document 2, C running becomes unstable. Become.

At this time, the running speed tends to increase, and when the speed exceeds a predetermined value, even if an encoder pulse is generated, the CCD sensor cannot accumulate data in time and cannot send out an image signal. This results in missing images. In addition, the impact when the support leg comes off causes discomfort to the operator.

[Means for Solving the Problems] According to the present invention, an auxiliary foot is provided between the support foot and the roller, so that the original document can be When the supporting foot comes off the edge,
The device is supported by auxiliary feet and rollers.

[Embodiment] FIG. 1(a) shows a configuration diagram of an embodiment apparatus to which the present invention is applied. The same members are attached to the same members as in the conventional example. L
The reflected light from the original 2 illuminated by the ED array 1 is reflected by the sharp mirror 3.
An image is formed on the CCDS soil through the lens 4. rubber roller 6
With the rotation of gear 7. The slit plate 8 rotates, and a photo sensor 9 shielded from light by the slit plate 8 emits a signal accompanying the rotation, and in accordance with this signal, the capture of image signals read by the CCD is controlled.

These are inclined support feet, and normally support the device at the most protruding portion 14 from the bottom of the device, as shown in FIG. 1(a). Then, an inclined surface l5, which is an auxiliary leg, is formed. FIG. 3 shows an inclined view of the device viewed from the bottom side. Two inclined support legs 13 are provided on the left and right sides.

When reading a document using the embodiment apparatus configured as described above, the document is manually moved in the direction indicated by the arrow 11 in FIG. 1(a). In FIG. 1(a), the device is supported by the roller 6 and the most protruding surface l4 of the inclined support foot 13, and when the projecting surface 14 passes the rear end of the original 2 due to movement, the device is supported by the inclined support foot 13. It is supported by the inclined surface 15 of the leg 13, and its supporting position gradually changes. The situation is shown in FIG. 1(b). The device is supported on the rollers 6 and on the inclined surface l5 of the inclined support foot 13.

That is, even when the protruding surface 14 passes the edge of the document 2, it runs smoothly and the image can be read stably.

[Other Embodiments] For example, the shape of the support legs 20, 21.2 may be changed in stages as shown in FIG.
2 may be provided.

Further, in the description of the embodiment, the case where the support leg side is moved forward is given as an example, but it is also effective when the moving direction is reversed and the roller side is forward. In other words, in the conventional device, running becomes unstable when the support leg runs over the edge of the document, but if the present invention is applied, the leg gradually runs over the edge of the document, so it can run smoothly.

[Effects] According to the present invention, using a very simple method, running stability is improved when reading near the edge of a thick document, and image loss that occurs due to unstable running is prevented. , it becomes possible to read the original correctly. In addition, the impact when the supporting feet come off from the edge of the document is eliminated, giving a good operating feel.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a manual scanning device that is an embodiment of the present invention, FIG. 2 is a configuration diagram of the device that is the background art of the present invention, FIG. 3 is a perspective view of the bottom of the embodiment device, and FIG. The figure shows another embodiment. DESCRIPTION OF SYMBOLS 1... LED array, 2... Document, 4... Lens, 5... CCD, 6... Roller, 9... Photo sensor, 12・゜゜support foot, 13... Inclined support feet, 14
...It is a protruding surface.

Claims (2)

[Claims] (1) In a manual scanning device equipped with a light-receiving element that converts a document image into an electrical signal, a roller that comes into contact with the document surface, and an encoder unit that generates pulses as the roller rotates, the bottom surface of the device body The roller surface and the supporting foot surface protrude from the roller surface, and the device is configured to be held by the roller and the supporting foot when placed on a flat surface, and the roller and the supporting foot are arranged between the roller and the supporting foot. A manual scanning device characterized in that an auxiliary foot is provided with an amount of protrusion that does not touch a flat surface made of. (2) The manual scanning device according to claim 1, wherein the supporting foot surface and the auxiliary foot surface are smoothly connected.