JPH02103568A - Image forming device with marking function - Google Patents

Abstract

PURPOSE:To attain a marking operation with high contrast by enlarging and copying only the 1st area of an original in a 2nd area on transfer paper by means of setting 1st to 3rd means and copying the 1st area of the original on the same side of the transfer paper. CONSTITUTION:The image forming device with marking function is provided with the 1st means 101 setting an exposing and scanning speed, the 2nd means 102 setting the magnification of an image formed on a photosensitive body and the 3rd means 103 setting the transfer timing of when an image is transferred onto transfer paper. The device is also provided with a designating means 104 designating any 1st or 2nd area on the original and a calculating means 105 which calculates exposing and scanning speed, an image magnification and the transfer timing, on receiving an input from the designating means 104. The device includes a control means 106 controlling the values set by the 1st to 3rd means 101 to 103 in response to the calculated result and a transfer means 107 which enlarges and copies only the 1st area of the original in the 2nd area of the transfer sheet beforehand, and afterward copies the entire original on the transfer paper again. Consequently, the marking function can exercise high contrast.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to an image forming apparatus such as an attack crosspiece, and in particular to an image forming apparatus for making part or all of an image formed on transfer paper stand out. The present invention relates to an image forming apparatus with a marker function.

(B) Conventional technology Conventionally, in this type of image forming apparatus, the marker function is performed by performing a solid copy (a copy that fills in a negative color) in a specified area, and then performing a normal copy on top of it in a different color. (For example, JP-A-62-
(See Publication No. 103673).

(c) Problems to be Solved by the Invention However, when marker processing is performed using such an image forming apparatus, depending on the combination of the color of the solid copy and the color of the normal copy, the contrast decreases and visibility is impaired. In particular, there is a problem in that small characters are difficult to read, and furthermore, when the designated area is complex, it is difficult to manually set it.

This invention was made taking these circumstances into consideration, so
Provides an image forming device with a marker function that exhibits a marker function with good contrast by enlarging and copying only a necessary part of the marker on a document in advance and then performing normal copying on top of that, making it easy to input designated areas. It is something to do.

(iv) Means for Solving the Problems FIG. 1 is a block diagram showing the configuration of the present invention, where 102 is a first means for setting the exposure scanning speed, and 102 is an image magnification for forming an image on a photoreceptor drum. The second means of setting,! 03
104 is a third means for setting the transfer timing for transferring an image from the photosensitive drum to the transfer paper, and 104 is an arbitrary first means on the document.
Specifying means for specifying an area (marker area) and a second area (enlarged area) larger than the first area including the first area;
05 is a calculation means for calculating the exposure scanning speed, image magnification, and transfer timing in response to input from the designation means 104; 106 is a first means 101, a second means 102, and a third means 103 corresponding to the calculation results of the calculation means; 107 is a control means for controlling each set value of the first means 1011, second means 102 and third means.
According to the settings of the means 103, the copying means enlarges and copies only the first area of the original into the second area on the transfer paper, and then copies the entire original onto the transfer paper again.

(E) The action specifying means 104 selects any first area (marker area) on the document and the first! When a second area (enlarged area) larger than the first area including the area is specified, the calculating means 105 calculates the exposure scanning speed, image magnification, and transfer timing from the specified first and second areas, and controls the area. The means 106 sets respective set values of the first means lot, the second means 102 and the third means 103 in accordance with the calculation result of the calculation means 105. The copying means 107 enlarges and copies only the first area of the original into the second area on the transfer paper based on the respective set values, and then copies the entire original onto the transfer paper again. In this way, the first area is overlaid on the enlarged second area on the transfer paper, so the first area stands out (marker processing) compared to other areas. become.

(f) Examples The present invention will now be described in detail based on examples shown in the drawings. It should be noted that this invention is not limited by this.

FIG. 2 is a configuration explanatory diagram showing an embodiment in which the present invention is applied to a copying machine, in which numeral 1 denotes an original placing table on which an original is placed, 2
is the reflected light (
- Dotted chain line C) is a photosensitive drum that forms an electrostatic latent image through an imaging lens 3a, 4 is a first developer storing black toner, 5 is a second developer storing red toner, and 6a is a A main charger for uniformly charging the photoreceptor drum; 6b a blanking lamp that eliminates static electricity from the portion of the band N other than the specified area; 7 a paper feed unit equipped with a paper feed cassette for storing transfer paper of various sizes; 8 9 is a conveyance roller, and 9 is a registration roller. When the transfer paper is fed from the paper feed section 7 by the conveyance roller 8, the registration roller 9 temporarily stops the transfer paper and turns on the registration clutch at a timing synchronized with the rotation of the photosensitive drum 2. Send out the transfer paper. 10 is a pre-registration switch 6c for confirming that the transfer paper has been conveyed to the registration rollers 9;

6d is a transfer charger and a separate charger respectively! 3
The transferred transfer paper is placed in the fixing section! 4 is a conveyor belt, 11 is an intermediate tray in which the fixed transfer paper is temporarily stored in order to send it again to the photosensitive drum 2, 15, 16 and 17
12 is a transport roller that transports the fixed transfer paper to the intermediate tray 1, and 12 is an intermediate tray feed roller that transports the transfer paper stored in the intermediate tray 1 to the photosensitive drum 2. Reference numeral 8 denotes a discharge section where the copied transfer paper is finally discharged.

The transfer paper fed from the paper feed section 7 by the conveyance roller 8 is
It is temporarily stopped by the registration roller 9.

Registration rollers 9 transport the transfer paper in accordance with the timing of the photoreceptor drum 2, and the transfer paper with the image transferred from the photoreceptor drum 2 is transported by the transport belt 13 to the fixing section! After being fixed in step 4, the image is stored in the intermediate tray 11 via conveyance rollers 15, 16, and 17. and middle tray 1
The paper is conveyed from the first feed roller 12 to the registration roller 9 again, and transferred onto the same surface again by the photoreceptor drum 2, then via the conveyance belt 13 and the fixing section 14, and finally to the discharge section! It is discharged at 8.

FIG. 3 is a perspective view showing the top surface of the embodiment shown in FIG. 2, in which a tablet 22 for specifying an arbitrary area of the document is provided on the document presser 20 provided on the document table l. There is. Place originals of various sizes on the tablet 22 with the original side facing up, specify the area with the pen 21, and then lift the original presser foot 20 and place the original on the original table l to specify the area of the original. will be held. 23 is an operation panel for performing various instruction operations.

FIG. 4 is a detailed explanatory diagram of the operation panel shown in FIG.
24 is a developer selection key, 25 is a marker specification key for specifying marker processing, 26 is a memory input key, 127 is a memory end key, 28 is a memory number indicator, 29 is a developer indicator, and 30 is a magnification setting key. , 31 is a magnification indicator, and 32 is a print key for starting the copying operation.

FIG. 5 is a block diagram showing the main parts of the control circuit of the embodiment shown in FIG. 2, where 33 is an exposure scanning mechanism that includes a lamp 3 and exposes and scans the document surface, and 34 is a mechanism that sets the magnification of the lens 3a. Magnification setting mechanism, i2a is intermediate tray paper feed roller 12
An intermediate tray paper feed clutch that turns the drive of
Reference numeral 9a designates a registration clutch that turns on and off the operation of the registration roller 9; 35, a developer selection mechanism; 36, various copying mechanisms that perform other copying operations; 37, a microcomputer; When a signal from the front switch IO etc. is input to the microcomputer 37, the microcomputer responds to the blank lamp 6 and resist clutch 9.
a. Intermediate tray paper feed clutch! 2a, exposure scanning mechanism 33
, a magnification setting mechanism 34, a developer selection mechanism 35, and various other copying mechanisms 36.

Next, manual operation using the tablet 22 shown in FIG. 3 will be explained using FIGS. 6 to 8.

As shown in these figures, the tablet 22 has an X axis in the exposure scanning direction (vertical direction) and a Y axis in the direction (horizontal direction) perpendicular to the exposure scanning direction. Ben 2 any point! (FIG. 3), the X-axis coordinate and Y coordinate of the designated point are manually entered into the microcomputer 37 (FIG. 5). Therefore, when specifying the marker area (first area) on which the marker processing of the document G is performed, for example, two points A(xi, yl)
, C(x2.y2), a rectangular marker area ABCD is input. Next, as shown in Figure 6, if you specify a point p (x, y) that is ΔX away from the side AD or BC, the marker area ABCD will be expanded by ΔX to the left and right (in the X-axis direction) as shown by the broken lines. The enlarged area (second area) to be
2-x1+2Δx)/(x2-xi)-(2). Furthermore, the X coordinate of the center of the marker area ABCD is calculated as L=(xl+x2)/2-.=(3).

Furthermore, as shown in FIG. 7, when a point M (x, y) that is Δy away from the side DC or AB is input, the enlarged area expands the marker area ABCD up and down by Δy as shown by the broken line. It is input as a region, and Δy is calculated as Δy=yl-y (4), and the magnification in the Yll11 direction (horizontal magnification) Zy
is Zy= (y2-y 1+2Δy)/(y2-yl)・
...It is calculated as (5).

Furthermore, as shown in Fig. 8, when a point R (x, y) is input outside any corner of the marker area ABCD, the enlarged area expands the marker area by ΔX horizontally and by Δy vertically. Δx, Zx, L, Δy, and zy are respectively calculated by the above equations (1) to (5).

The operation in such a configuration will be explained using the flowcharts shown in FIGS. 9 and 10.

First, when the marker setting key 25 and the memory input key 26 are pressed on the operation panel 23, the Oth memory of the marker processing memory of the microcomputer 37 is called (step 201), and each setting value described below is stored. be done. That is, when a marker color is specified using the developer selection key 24 (step 202), the specified color is stored in memory (step 203). next,
As shown in FIGS. 6 to 8, the marker area is input (step 204), and then the 21 points M or R are input (step 205), and the equation (2) and The vertical magnification Zx and/or the horizontal magnification zy are calculated from equation (5) (step 206), and the lens magnification of the magnification setting mechanism 34 corresponding to the horizontal magnification zy is memorized, and the exposure scanning mechanism 33 corresponding to the vertical magnification Zx is The scanning speed is memorized (steps 207 and 208). next,
The drive timing of the registration rollers 9 in normal copying operations (the time from the start of exposure scanning of the original to the start of driving of the registration rollers 9 ) t is set to be delayed by Δt (steps 209 and 210).
.

Note that Δt is the exposure scanning speed at the same magnification (the photoreceptor drum 2
When the peripheral speed of
z-1/Vd) ”(1/2)(x1+x2)(1/Vz-1/Vd)-
= Calculated using (6).

Then, each setting value is stored in the θth memory (step 210a). Next, when the print key 32 is pressed, it is determined that all inputs for marker processing have been completed (step 211), and the set values from the 0th memory are called up (step 212). Then, the developer 4 or 5 corresponding to the specified color is selected and set (steps 213 and 214), and the registration timing is adjusted according to the setting values stored in the memory.
The lens magnification and exposure scanning speed are set (steps 215, 216, 217), and the original is copied using the set values (step 218). In other words, as shown in FIGS. 6 to 8, the operation of enlarging only the designated marker area ABCD in the document G in the X-axis direction, Y-axis direction, or both the X and Y-axis directions and copying it is performed. I,
The copy paper that has been copied is stored in the intermediate tray 11 (
step 219). Here, if another marker processing setting value is not stored in the memory of another number (step 220), the lens magnification, exposure scanning speed, copy color, etc. are set to the normal state (1-size copy). (steps 221, 222 and 223), the transfer paper housed in the intermediate tray is sent out, normal copying of the original G is performed, and the copy paper that has been copied is ejected to the ejection section 18 (step 224). .

Further, in step 205, if none of the points P, M, and R are input on the tablet 22, and instead, the magnification Z is input from the magnification setting key 30 of the operation panel 23 (step 225) , lens magnification, exposure scanning speed, registration timing, etc. are determined corresponding to the values calculated from the above-mentioned equations as Zx=Zy=Z, and are stored in the memory (steps 226 to 229).

Furthermore, if there are multiple marker areas to be specified on the document, in step 211, the memory input key 2 is again pressed.
Pressing 6 prepares the memory for the next marker area designation (step 230) and the routine returns to 202.
You can return to and set the next marker area and enlarged area. Therefore, when multiple marker areas are specified, in step 220, various setting conditions regarding each specified marker area are sequentially recalled from memory (step 231), and enlarged copying for all marker areas is completed. The routine continues until step 21
Return to 2.

Figure 11 shows the case where marker processing is performed using the input method shown in Figure 6, Figure 12 shows the case where marker processing is performed using the manual method shown in Figure 7, and Figure 13 shows the case where marker processing is performed using the input method shown in Figure 8. FIG. 7 is an explanatory diagram showing each copy example when marker processing is performed.

In the above embodiment, the drive timing of the registration rollers is delayed by Δt calculated by equation (6) to copy the enlarged area, but instead, the timing of starting exposure scanning of the original is delayed by Δt as described above. It may be made to advance by t.

(G) Effects of the Invention According to the present invention, an enlarged image of the specified area is copied on the background of the specified area of the original, so the specified area stands out with good contrast against the background and is highly visible. marker processing becomes possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is a configuration explanatory diagram showing an embodiment of the invention, FIG. 3 is a partial perspective view of the embodiment shown in FIG. 1, and FIG. 3 is a partially enlarged top view of FIG. 3, FIG. 5 is a block diagram showing the control circuit of the embodiment shown in FIG. 1, FIGS. 6 to 8 are explanatory diagrams showing the tablet input method, and FIGS. This figure is a flowchart showing the operation of the embodiment shown in FIG. 1, and FIGS. 11 to 13 are explanatory diagrams showing examples of marker processing in the embodiment shown in FIG. 1. 6...Blank lamp, 9a...Regist clutch, 1O...Regist front switch, 12a...
...Intermediate tray paper feed clutch, 22...Tablet, 23...Operation panel, 33...
...Exposure scanning mechanism, 34...Magnification setting mechanism, 3
5...Developer selection mechanism. Figure True 5 Figure Figure Figure Figure Figure Figure Figure

Claims (1)

[Claims] 1. A document is exposed and scanned to form an image on a photoreceptor, the formed electrostatic latent image is developed and transferred to transfer paper, and the transfer paper is fixed and discharged. In the configured image forming apparatus, a first means for setting the exposure scanning speed, a second means for setting the magnification of the image formed on the photoreceptor, and a timing for transferring the image from the photoreceptor to the transfer paper are set. a third means, a specifying means for specifying an arbitrary first area on the document and a second area larger than the first area including the first area; and an exposure scanning speed and an image magnification based on the output from the specifying means. a calculation means for calculating the transfer timing; a control means for controlling each set value of the first, second and third means in accordance with the calculation result of the calculation means; and setting of the first, second and third means. , only the first area of the original is enlarged and copied into the second area on the transfer paper, and at least the first area of the original is copied on the same side of the transfer paper.
An image forming apparatus with a marker function, comprising a copying means for copying an area.