JP2001166635A - Digital copying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital copying machine having a test printing function by which an image such as image density is precisely transmitted by extracting only the head part of a picture and which is useful for deciding a necessary set value. SOLUTION: Reading is repeatedly performed and all of originals whose test copying is desired to be performed are written in memories 20 and 21 (3-1, 3-2 and 3-3 in figure 3). Such processing is performed till there are not the next originals (S13; N). By an image processing circuit 19, an area for test copying image is secured in the memories 20 and 21 (3-4 in the figure 3) and image data for the head part 210 mm is copied there in turn from the image data of the 1st sheet. Then, the test copying image collected to one sheet is produced and test copying image information is outputted by a copying device (S14). As the outputted result, if necessary, the change of set can be performed from an operation part 27 thereafter (S15).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital copying machine having a trial copy function.

[0002]

2. Description of the Related Art Conventionally, various types of copying machines have been proposed which have a trial printing function for checking the output contents before output. For example, in a copying machine provided with an automatic adjustment function for automatically adjusting the density of an output image, the apparatus adjusts the density to an appropriate value and outputs the image. However, depending on the type of the document, the output may not always be performed at the optimum density. Therefore, in the invention described in Japanese Patent Application Laid-Open No. 7-199743, in order to be able to intuitively grasp which range of the set value each density of the test printed image corresponds to, a test copy function is provided to the copying machine. , And the change range of the density of the test copy is displayed by lighting a plurality of display elements of the density display section.

According to the invention described in Japanese Patent Application Laid-Open No. H11-95618, when performing test printing, the character portion is narrowed,
In addition, by performing a blanking process and reducing a photograph portion, toner and paper are saved. JP 1
In the invention described in the method of 1-187256, in order to save a recording medium (paper) and toners at the time of performing test printing, the image size is reduced and then output on a recording medium having a small number of pages.

[0004]

However, in the prior art, the batch output of test copies on one sheet of paper has the disadvantage that the image, such as the original image density, is not accurately transmitted to the user because the image is reduced. there were. Further, in the related art, the density of the image data stored in the hard disk or the page memory cannot be changed, and it is necessary to read the original every time the density is changed. Accordingly, a first object of the present invention is to provide a digital copying machine having a trial printing function that is useful in determining necessary setting values by accurately transmitting an image such as image density by extracting only the leading part of an image. To provide. It is a second object of the present invention to provide a digital copying machine capable of copying a document once it has been read, by changing the density as many times as necessary.

[0005]

According to the first aspect of the present invention, there is provided an image reading section for detecting a document and performing a reading operation, an image storing section for storing image data read by the image reading section, and an image storing section for storing the image data. An image processing unit that performs predetermined editing and processing on the image data stored in the storage unit; and a development unit that outputs the image data stored in the image storage unit and performs a development process, and presents a copy image in advance. Therefore, prior to the normal output of image data by the developing unit, the first object is achieved by copying only a predetermined length of the image data and outputting it.

According to the second aspect of the present invention, an image reading section that detects a document and performs a reading operation, an image storage section that stores image data read by the image reading section, and an image storage section that stores the image data. An image processing unit that performs predetermined editing and processing on the image data; and a developing unit that outputs the image data stored in the image storage unit and performs a developing process. The developing unit is configured to provide a copy image in advance. Prior to normal image data output, the first object is achieved by connecting the head portions of image data of a plurality of pages by a predetermined length and copying and outputting one image.

According to a third aspect of the present invention, in the first or second aspect of the present invention, there is provided a density setting means for setting the density of the image data output from the developing section, wherein the density setting means sets the density. The second object is achieved by performing a plurality of outputs for presenting a copy image at a density in advance.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to FIGS. FIG.
1 is a block diagram showing a configuration of a digital copying machine according to the present embodiment. As shown in this figure, this digital copying machine has a CTS 11, an analog signal amplifying circuit 1
2. A / D (analog / digital) conversion circuit 13, write synchronization control circuit 14, read control circuit 15, operation control circuit 16, scanner control unit 17, system control circuit 18, image processing circuit 19, image memory unit 20 , Extended page memory 21, LED driver circuit 22, LED 23, read synchronization control circuit 24, write drive control circuit 25, drive device 26,
A printer operation control circuit 27 and a printer operation unit 28 are provided.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, the test copy key of the scanner control unit 17 is depressed to enter a test copy mode (step 10). Then, the mode is set in the same manner as in normal copying (step 11). Next, the original is read, and the read image is converted into digital image information by the A / D conversion circuit 13 and stored in the image information storage device (step 12). The image information storage device is a 288M for storing digitally recorded image information corresponding to one AO size sheet.
b, an image memory unit 20 composed of a DRAM, and an extended page memory 21 composed of four HDDs for storing digitally recorded image information exceeding this. The digital image information passes through the image processing circuit 19 and is written to the image memory unit 20 if the AO size is smaller than the AO size, and is written to the extended page memory 21 if the AO size is exceeded. The contents of this memory are shown in FIG.

This reading is repeated, and all the originals for which a test copy is desired are written in the memories 20 and 21 (FIGS. 3, 3-1, 3-2 and 3-3), and this process is performed until there is no next original (step S1). 13; N). When all originals have been read and a copy start operation has been performed by the scanner control unit 17, the image processing circuit 19 secures areas for test copy images in the memories 20 and 21 (FIGS. 3 and 3-4).
Then, the image data for the top 210 mm is sequentially copied from the first image data to create a single test copy image, and the test copy image information is output by the copying apparatus (step 14).

As a result of this output, if necessary,
The setting can be changed from the scanner control unit 17 (step 1).
5). For example, when the density is changed, image data changed to a temporary storage area is created according to the density specified at the time of output (FIGS. 3, 3-5, 3-6) and output. After output, this temporary storage area is released. It is selected whether to output the test copy again or to start the normal copy (step 16). When the normal copy is selected (Step 16; Y), the stored image information is output normally (Step 17), and the process is terminated.

[0012]

According to the first aspect of the present invention, only the leading portion of the image data can be output with a predetermined length.
Copy contents can be checked in advance without wasting paper, toner, and the like. According to the second aspect of the present invention, in the control of image data, the leading portions of a plurality of image data can be sequentially copied on one sheet of paper. Can be obtained without receiving. According to the third aspect of the present invention, once the original is read, the density can be changed based on the image data stored in the storage means and the copy can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a digital copying machine according to the present embodiment.

FIG. 2 is a flowchart showing the operation of this embodiment.

FIG. 3 is a diagram showing the contents of a memory used in the present embodiment.

[Explanation of symbols]

 Reference Signs List 11 CTS 12 Analog signal amplifier circuit 13 A / D (analog / digital) conversion circuit 14 Write synchronization control circuit 15 Read control circuit 16 Operation control circuit 17 Scanner control unit 18 System control circuit 19 Image processing circuit 20 Image memory unit 21 Expansion Page memory 22 LED driver circuit 23 LED 24 Read synchronization control circuit 25 Write drive control circuit 26 Drive device 27 Printer operation control circuit 28 Printer operation unit

Claims (3)

[Claims] An image reading unit that detects a document and performs a reading operation; an image storage unit that stores image data read by the image reading unit; and a predetermined editing unit that edits the image data stored in the image storage unit.・
An image processing unit for performing processing, and a developing unit for outputting image data stored in the image storage unit and performing a developing process, and in order to present a copy image in advance, prior to normal image data output by the developing unit. A digital copying machine wherein only a predetermined length of image data is copied and output. 2. An image reading section for detecting a document and performing a reading operation, an image storage section for storing image data read by the image reading section, and a predetermined editing operation for the image data stored in the image storage section.・
An image processing unit for performing processing, and a developing unit for outputting image data stored in the image storage unit and performing a developing process, and in order to present a copy image in advance, prior to normal image data output by the developing unit. A digital copying machine wherein a leading portion of each page of image data of a plurality of pages is connected by a predetermined length, and a single image is copied and output. 3. A density setting means for setting the density of image data output from the developing unit, wherein output for presenting a copy image in advance at a density set by the density setting means is performed a plurality of times. 3. The digital copying machine according to claim 1, wherein: