JPS62284565A - Original reader - Google Patents

Abstract

PURPOSE:To easily and accurately specify a necessary area by providing an original sucking means which sucks an original on the opposite surface of an original pressure member from an original platen and a position specifying means consisting of scales, etc. CONSTITUTION:The original pressure member 2 is opened from the original platen 1 by 180 deg. and the original is placed on the original pressure member with the surface up based on the position specification reference point 6 of the original pressure member 2 and scales 7 and 8 for positioning in a main scanning direction and a subscanning direction. The original sucking means 3 is operated after the original is mounted to fix the original. At this time, the coordinates of a necessary area of the original are read on the scales 7 and 8 and inputted. While the original is sucked to the original pressure member 2, the original pressure member 2 is closed and the original is scanned to reads only the specified necessary area or perform half-tone processing for only the specified area. Consequently, the coordinates of the area are easily and accurately found.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Application Field The present invention relates to a document reading device that optically reads a document and inputs it into a personal computer, printer, electronic file system, etc. The present invention relates to the document holding member.

2. Description of the Related Art Conventionally, such document reading apparatuses can read only necessary portions or perform halftone processing only on image portions.

In such cases, when specifying the required area, the coordinates of the required area are input using the keyboard or host computer, with the reference point at the time of reading the document as the origin. There is a method shown in FIG. 3 as a means for determining these coordinates.

A conventional document reading device will be described below with reference to FIG. FIG. 3 is an explanatory diagram of a document mounting table of a conventional document reading device, where 10 is a document table glass, 11 is a reference point when reading the document, and 12 is a main scanning direction extending from the reference point 11 in the main scanning direction. 13 is a positioning member in the sub-scanning direction extending from the reference point 11 in the sub-scanning direction, and 14 and 16 are positioning members 12 in the main-scanning direction.
and a scale provided on the sub-scanning direction positioning member 13.

In this document reading device, in order to find the coordinates of the required area of the document, the document is read on the document table, that is, the document is placed face down, and the coordinates of the required area are measured on the scale 14.
．． 15.

Problems to be Solved by the Invention In such conventional document reading devices, it is difficult to obtain the coordinates of an accurate area because the coordinates are determined while the document is being read, that is, with the document face down. Moreover, even if the coordinates are determined with the document facing up, the main scanning direction is reversed left and right when actually reading the document, making it necessary to convert the coordinates.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a document placing table and a document holding member that presses the document on the document placing table, and the document holding member faces the document placing table. A document suction means for suctioning a document onto a surface to which the document is attached, and a position specifying means consisting of a scale or the like are provided.

Effect of the Invention With the above-described configuration, the present invention allows the document suction means to attract the document to the document holding member, and the position specifying means provided on the document holding member to determine the coordinates of the required area, thereby easily and accurately detecting the required area. You can specify the area.

Embodiment An embodiment of the present invention will be described with reference to FIG. 1st
The figure shows one embodiment of the present invention, in which 1 is a document placement table, 2 is a document holding member that presses down the document on the document placement table, and the surface of the document holding member 2 facing the document placement table 1 is is provided with a document suction means 3 for suctioning the document by some method (for example, electrostatic force, air pressure, etc.). Also 4
is a rotating part that opens and closes the document holding member 2, and the document holding member 2 can be opened 180 degrees. FIG. 2 shows a state in which the document holding member 2 of the document reading apparatus according to the present invention is opened 180 degrees. 6 is a reading reference point that serves as a reference when actually reading the original; 6 is a position designation reference point that corresponds to the reading reference point 5 when the original holding member 2 is closed; On the surface facing the mounting table 1, scales 7 and 8 are provided which serve to position the document in the main scanning direction and the sub-scanning direction, with the position designation reference point 6 as the origin. 9 is a document table glass.

Next, the operation of the embodiment of the present invention will be explained using FIGS. 1 and 2. First, open the original holding member 2 180 degrees with respect to the original placing table 1, and align the original holding member 2 with the position designation reference point 6 and the scales 7 and 8, which also serve as positioning in the main scanning direction and the sub-scanning direction. Place the document on the document holding member 2 with the front side facing up. After placing the original, the original suction means 3 is operated to fix the original. At this time, the coordinates of the required area of the document are read from the scales 7 and 8 and inputted using some input means (for example, various methods such as keying in on the operation panel or transmission from the host are possible). do.

After that, while the original is still attracted to the original holding member 2, the original holding member 2 is closed and the original is read and scanned, and only the specified necessary area is read, and halftone processing can be applied only to the specified area. .

Effects of the Invention As described above, the present invention has great practical value because it is possible to accurately determine the coordinates of a required area using a very simple method.

[Brief explanation of the drawing]

1 and 2 are a side view and a plan view of a document reading device according to an embodiment of the present invention, and FIG. 3 is a plan view of a conventional document reading device. DESCRIPTION OF SYMBOLS 1...Document placement table, 2...Document holding member, 3...Document suction means, 7, 8...
scale. Name of agent: Patent attorney Toshio Nakao and 1 other person
1f! 1 7 Black flat mounting table No. 21! 1 No. 31! I

Claims (3)

[Claims] (1) A document reading device that includes a document placement table and a document holding member that presses the document on the document placement table, and is provided with document suction means that sucks the document onto the surface of the document holding member that faces the document placement table. (2) The document reading device according to claim 1, further comprising a position specifying means such as a scale provided on the surface of the document holding member facing the document mounting table. (3) The document reading device according to claim 1 or 2, wherein the document suction means is a suction means using electrostatic force.