JPS63296561A - Picture reader - Google Patents

Abstract

PURPOSE:To contrive to attain small size and low cost by providing a light transmission type liquid crystal on a platen placing an original thereupon to display a prescribed pattern formed in advance and synthesizing the pattern and the picture information of the original simultaneously by the scanning of the light source, thereby eliminating the need for the device synthesizing the picture information and the pattern. CONSTITUTION:The light transmission type liquid crystal is constituted for a platen with an original placed thereupon to contrive the miniaturization, a platen 19 composed of the light transmission type liquid crystal module while placing the original and a means 15 displaying the prescribed pattern in advance onto the platen are provided on the picture reader, and a prescribed pattern is displayed on the liquid crystal module 16 by using a means 15 displaying the prescribed pattern such as a form, title or shade pattern formed and processed in advance by a character generator or the like, and the pattern on the liquid crystal is scanned and read as well as the original simultaneously. Thus, the picture information and the pattern are synthesized and read by the picture reader.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image reading device for reading image information, and particularly to an image reading device suitable for copying machines, laser printers, etc. that utilize electrophotographic technology.

[Prior Art] Conventionally, in such a device, when combining image information obtained by scanning a document with code information such as a form and a title, a display device such as a CRT, a display device such as a CRT, and code information are used in addition to the above device. It has an image processing section such as a keyboard for inputting code information, a character generator for processing input code information, a font memory, an image memory, etc., and after reading the image information with the image reading device, it is read by the other device mentioned above. It performs processing such as compositing the read image information and form or inserting a title.

[Problem that the invention seeks to solve]

However, with the above-mentioned 8-position image reading system, separate devices such as a CRT, keyboard, and image processing unit are required to combine the image information and code information, making the entire system large. It was not suitable for One object of the present invention is to provide an image reading device that can be downsized by having a platen on which a document is placed made of a light-transmitting liquid crystal.

[Means and effects for solving the problem] In the present invention, an image reading device is provided with a platen comprising a light-transmitting liquid crystal module on which a document is placed, and means for displaying a predetermined pattern created in advance on the platen. For example, a predetermined pattern such as a form, title, shade pattern, etc. created and processed in advance by a character generator is displayed on the liquid crystal module by the displaying means, and the pattern on the liquid crystal is scanned and read at the same time as the original. It is.

Therefore, in the present invention, image information and a pattern can be combined and read by an image reading device.

〔Example〕

Embodiments of the present invention will be described in detail based on the drawings of FIGS. 1 to 5.

FIG. 1 is a block diagram of an embodiment of an image reading apparatus according to the present invention. In the figure, code information to be combined with image information is input from an input interface 12 from a console 11 or an external storage device (not shown), such as a hard disk, optical disk, cartridge tape, etc.
The program and data storage section (
Hereinafter referred to as main memory. )14. Note that the code information includes a character code, a vector code, a pattern code, and position information.

Next, the system control processor (hereinafter referred to as CPU) 15 reads each piece of code information stored in the main memory 14 and loads a bit map, for example, 24×24 dots, corresponding to the read code information from the font and pattern memory 17. do. And CPLJ15 is
Transfer the above bitmap to the LCD controller/driver 18.
The liquid crystal controller/driver 18 causes the light-transmissive liquid crystal module 19 to display patterns such as forms, characters, figures, and shade patterns based on the bitmap.

FIG. 2 is a perspective view showing an embodiment in which the image reading device shown in FIG. 1 is used in a copying machine, and shows the bag fl! In addition to the conventional copying function, 20 includes a platen comprising a light transmission type liquid crystal module 19, a liquid crystal controller/driver 18 that controls the liquid crystal module 19, and a system control processor (CPU) 15 that converts code information into a bit map. , font and pattern memory 17
Based on the bitmap created by the system control processor (CPLI) 15, the liquid crystal controller/driver 18 displays, for example, a pattern as shown in FIG. ing.

Note that FIG. 3 shows the pattern seen from the upper lid 21 side, and the left and right sides are reversed. Then, the original 22 shown in FIG. 4 is superimposed on the pattern displayed on the platen, and the upper lid 21 is
is closed, a light source (not shown) in the device e120 is turned on, and the platen and original 22 are scanned. The light from the light source resulting from this -times of scanning is blocked by the pattern displayed on the platen, and in areas other than the pattern, it passes through the platen and illuminates the document 22, becoming reflected light and forming a synthesized latent image. It can be formed and developed on the recording paper 23 shown in FIG.
A fixed toner image can be formed.

In the present invention, although a copying machine has been described, the present invention is not limited to this, but can also be used for a printer such as a laser printer, and by adding this printer, it is possible to develop a digital copier. In addition, predetermined patterns for routine processing are stored in the main memory,
By specifying and reading data on the console, etc., input can be simplified and delivery slip processing, etc., can be greatly effective. It is also possible to add a confidentiality mark to the code information displayed on the platen, or to mask part of the document that you do not want to print on. Furthermore, it is also possible to designate the placement location of the document by displaying a mark indicating the reading area of the document according to the size of the recording paper, or reduction or enlargement, etc., on the liquid crystal display, for example.

Therefore, in the present invention, the original document and the code information can be read simultaneously by one scan of the light source.

〔Effect of the invention〕

As explained above, in the present invention, a light transmissive liquid crystal is provided on the platen on which the original is placed to display a predetermined pattern created in advance, and the pattern and the image information of the original are simultaneously synthesized by scanning a light source. The device used to synthesize the above-mentioned information on both cases and the pattern is no longer necessary, and the size and cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention;
The figure is a perspective view of the configuration of Figure 1, Figure 3 is a diagram showing an example of a pattern displayed on the platen, Figure 4 is a diagram showing an example of a document, and Figure 5 is a diagram showing the result of combining the pattern and the document. It is a diagram. DESCRIPTION OF SYMBOLS 11... Console, 12... Input interface, 13... Internal bus, 14... Program and data storage part (main memory), 15... System control processor (CPU), 17... Font and pattern memory, 18... Liquid crystal controller/driver, 19... Light transmission type liquid crystal module, 20...
image 9 reading device, 21...upper lid, 22... original 11-
1 Ronseau 1 13-°゛Inner 8th section 19''''-Nou-Kan Kai'll Akihito-・L Figure 1

Claims (1)

[Scope of Claims] An image reading device that reads image information from a document placed on a platen, comprising: a platen made of a light-transmissive liquid crystal module; and means for displaying a predetermined pattern created in advance on the platen; An image reading device characterized in that the image information and the pattern are combined and read when scanning the document.