JPS63261369A - Copying machine equipped with editing function - Google Patents

Abstract

PURPOSE:To facilitate operation and to diversify editing and copying operation by inputting coordinate data as numeric data. CONSTITUTION:When an image front end on a photosensitive drum 61 reaches the position where it faces an eraser, the value (A) of coordinates A and the value (B) of coordinates B are compared with each other and when (A)<(B), it is decided which of a copy mode for taking a copy in a specified area and an erasure mode for erasing the inside of the specified area is specified with a key switch 97. Then all LEDs are turned on in the copy mode,but turned off in the erasure mode. When (A)>(B), on the other hand, the value (C) of coordinates C and the value (D) of coordinates D are compared. Thus, the erasure or copying mode can be specified for nine areas only by specifying the four coordinates according to the large-small relation among the input numerals inputted as the coordinates data A-D and the copy mode or erasure mode specification.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying machine with an editing function, and more specifically, the present invention is characterized in that the operation for specifying an editing area is simplified.

[Prior Art] Conventionally, a copying machine with an editing function has been provided as disclosed in Japanese Unexamined Patent Publication No. 60-17'6065.

This involves, for example, inputting editing coordinates using a numeric keypad used to input numerical values such as the number of copies, and executing editing and copying such as erasing and trimming.

Erasing refers to copying the area defined by the editing coordinates as blank space, and trimming refers to copying the area outside fRvJ as blank space.

Furthermore, the blank area is illuminated by an eraser placed close to the photoconductor of the copying machine, which illuminates the area on the photoconductor corresponding to the blank area. ) 1 to remove the electrical charge in the area and prevent toner from adhering to the area.

[Problems to be Solved by the Invention] Now, let us consider the case where four coordinate points corresponding to each vertex of a rectangular area are manually specified as editing coordinates. It can be divided into two subregions.

Conventionally, it was possible to copy a llir collection by blanking only the central area of the nine areas (erase mode) or blanking the eight areas other than the central area (trimming mode) with a relatively simple operation. there were.

However, if the image area can be divided into nine areas using four coordinates, it is desirable from the viewpoint of diversifying editing and copying that blanking can be easily specified for any small fn area.

The present invention meets such a need, and in realizing the present invention utilizes the fact that coordinate data is input as numerical data.

[Means and effects for solving the problems] Is the present invention uniform? 'l) A copying machine that forms an electrostatic latent image on an electrified photoreceptor by selectively irradiating it with light, and develops the electrostatic latent image to obtain a copied image, the copying machine comprising: A light irradiation means capable of irradiating the area with light; a display means for displaying abstract coordinates defining the boundaries of the image editing area; and a display unit displaying concrete coordinate data defining the image editing area corresponding to the home coordinates. and a coordinate input means for inputting numerical data; a comparison means for comparing the magnitude of the input numerical data in the same direction; and an area determining means for determining an image editing area according to the comparison result; A copying machine with an editing function, comprising: control means for driving and controlling the light irradiation means based on a signal from the determination means.

In this copying machine with such a configuration, the magnitudes (X-axis direction, Y-axis direction, respective magnitudes) of coordinate data input in association with abstract coordinates are compared, and the area to be blanked is determined according to the result. be done.

That is, diversification of editing and copying can be achieved through relatively simple operations.

[Example] Hereinafter, specific embodiments of the present invention will be explained.

(Description of the copying machine main body) FIG. 1 is a schematic diagram showing the II structure of the copying machine main body of this embodiment. As shown in the figure, the copying machine of this embodiment includes a scanning system 5 (51 to 54) that exposes a raw stone and transmits an image, and reproduces the transmitted image on copy paper by an electrophotographic process. It has an image forming section 6 (61 to 69), a paper feed/discharge system 7 (71 to 76) for supplying copy paper and regularly reviewing images, and a glass document table 8.

(a) Scanning system The scanning system 5 is scanned by a second CPU (to be described later), and has a light source (not shown), mirrors 51, 52, 53, 54, and an exposure scanning motor M3, and is scanned along the lower surface of the rough stone table 8. It moves back and forth, and when it moves back and forth, it exposes and scans the surface of the document. That is, the reflected light from the original is reflected by mirrors 51, 52, and 53, passes through the sliding door and lens (lens block for oddballs) 55, is further reflected by the mirror 54, and reaches the photosensitive drum 61. image on the surface. Mirror 51.52.53 is
They are driven in conjunction with each other by the same exposure scanning motor M3. The moving speed of the mirror 51 is V/N (N: copying magnification) with respect to the circumferential speed V of the photosensitive drum 61.
In addition, the mirrors 52 and 53 are used to keep the optical path length constant.
It is V/2N. On the other hand, the mirror 54 and lens 55 are
It is driven in conjunction with the magnification setting motor M4. Here, the lens 55 moves on the optical axis to change the copying magnification, and the mirror 54 moves and swings to correct the image point.

(b) Image forming section The image forming section 6 is
A photosensitive drum 61 that can be rotated in the direction of the arrow, a main eraser lamp 62, a sub charger 63, a sub eraser lamp 64, a main charger 65, a developing device ff166, which are arranged around the drum 61.
Transfer charger 67, copy paper separation charger 68,
A blade type cleaning device 69 is shown on the right. Note that between the main charger 65 and the developing device 66, an inter-image erase unit 4, which will be described later, is arranged close to the photosensitive drum 61.

A photoreceptor layer is formed on the surface of the drum 61, and the photoreceptor layer includes the eraser lamps 62, 64 and W? f
It is sensitized and charged by passing through the fi charger 63, 65, and receives slit exposure from the scanning system 5 to form an electrostatic latent image. Note that, prior to the slit exposure, no static Fi latent image is formed in the area from which the charge has been removed by the inter-image erase unit 4.

Toner is attached to the formed electrostatic latent image in the developing device 66, and the attached toner is transferred to the transfer charger 6.
7, the transfer paper (timing roller 7 of the feeding and distributing rough system 7)
(supplied via 3).

<c> Supply and distribution coarse system The supply and distribution coarse system 7 is controlled by the first CPU (described later).
It consists of an upper paper cassette 71, a lower paper cassette 72, respective cassette delivery rollers 711, 721, a pair of transport rollers 712, 713, a pair of timing rollers 73, a transport belt 74, a fixing device 75, a pair of ejection rollers 76, etc. is driven by main motor M1.

(Operation panel explanation) Next, the keys and displays on the operation panel will be explained.

FIG. 2 is a plan view of the operation panel 9 of the copying machine.

As shown in the figure, the panel 9 includes a print key 90 for starting a copying operation, an edit copy select key 91 for switching between normal copy mode and edit copy mode, and a selection of copy paper stored in paper cassettes 71 and 72 by size. copy paper selection key 92 to change the copy density, up key 932 and down key 931 to change the copy density, and numeric keys (1 each) to input the number of copies and coordinate data.
．． 2, . . . corresponding to the numerical value of 9.0) group 94, magnification setting key group 9 to call up a preset predetermined copy magnification
5. Rect key 96 for editing coordinates to display coordinate data, erase/copy switching key 97 for switching the area to be erased, clear/stop key 981, interrupt key 982, fine adjustment key group 9 for finely adjusting coordinate data
91 to 998, and a display panel 900 that displays the number of copies or coordinate data in segments.

In the figure, each small square is an LED lamp that indicates that the key or display in its vicinity is in an operating state or a selected state.

(Description of the inter-image erase unit) FIG. 3 is a perspective view of the inter-image erase unit 4 disposed close to the photoreceptor drum 61, and FIG. FIG.

As shown in the figure, there are a large number of inter-image erase units 4 (N"
+ 1 LED light emitting elements arranged in a row
By selectively causing any LED element to emit light, the electrostatic charge on the corresponding area on the photoreceptor drum 61 is removed, and the formation of an electrostatic i8 image on the area is prevented.

For example, as shown in FIG. 4, assuming a sign of 0-N= from the left for N-+1 LED elements, turn on the LED elements C to D from the end time of timer XA to the end time of timer XB. Then, the charge in the area of the drum 61 corresponding to the shaded area in the figure is removed, and no electrostatic latent image is formed in the area, so that no copy image is transferred.

(Description of Ruri Ube) FIG. 5 is an explanatory diagram of the configuration of the i, II te1 section of the copying machine.

As shown in the figure, the it, I 111 section includes the first CPU 21,
In this embodiment, the driver 400 of the inter-image erase unit 4 includes a second CPU 22 and a RAM 23.
It is connected to the CPU 21. Further, the first CPU 21 and the second CPU 22 are connected via a bus line 214.

The first CPU 21 is connected to input expansion ICs 202 to 205 that are controlled via a decoder 206, and is further connected to the key group 90 to 998 of the display panel 9 and the paper feed/discharge system 7 via the input expansion ICs 202 to 205. Sen If
Connected to groups.

Further, the output expansion IC 2 controlled via the decoder 211
07 to 209, the main motor M1, the developing motor M
2. Clutch of timing roller 73, delivery roller 71
1, the clutch of the feed roller 721, the charging charger 65, the transfer charger 67, and other drivers.

Furthermore, it is also connected to an LED matrix 210 for ON display on the operation panel 9 via a decoder 212 .

The first CPU 21 drives the inter-image erase unit 4, the image forming section 6, and the paper feed/delivery system 7, displays numerical values on the display panel 900, and controls other temperature controls of the copying machine according to the key manual input or sensor input. The main operation of $I IIl.

The second CPU 22 includes a switch group 5 arranged in stages δ in the scanning system 5.
W50 to SW52, driver 5 of exposure scanning motor M3
00, and the driver 501 of the magnification limiting motor M4.

- The second CPU 22 roughly controls the driving of the exposure scanning motor M3 and the magnification setting motor M4 in accordance with commands from the first CI U 21, and also controls sensors such as an image tip switch installed in the scanning system. A predetermined signal such as a timing signal is generated according to the input.

The RAM 23 is used to write various data such as coordinate data, coordinate correction data, copy operation II + data, and magnification setting data (data is input from each operation key and a sensor that detects the operating status of various devices, and the CPU). (provided from ROM) and used for reading.

(Operation explanation) The operation of this embodiment device will be explained below.

In FIG. 2, for example, when a numerical value is input using the numeric keypad 94 while the edit friction display 96a is lit, the numerical value is stored as a coordinate data. Similarly, 96b, 96C1, and 96d correspond to the B coordinate data, C coordinate data, and D coordinate data, respectively.

FIG. 10 is a flowchart showing the main routine of the first CPU 21.

When the first CPU 21 is reset and the program starts, initial settings of the CPU are first performed (S202
>. In this initial setting, RAM is cleared, various registers are set, and each load is initialized. Next, the CPU
Start the internal timer built in (82
03>. The value of this internal timer is determined at the first 1t[Q regular time. Next, each subroutine on the flowchart (8204, S, 205.5206.5207.5
208.5209.5210> in order, and when all subroutine processing is completed in i ways, the end of the internal timer that was set first is checked (S211).
. At this time, if the internal timer has not yet finished, it waits until it finishes. When the internal timer ends, one routine ends, and the process returns to the start of the internal timer (8203>. Of the subroutines that make up the above flowchart, the image editing routine (S209>) is not directly related to the gist of the present invention. Since this is unrelated and a known control is adopted, the explanation will be omitted.

FIGS. 11, 12, and 13 are flowcharts showing the image editing control routine (3209).

In the following, vl is input to A and B, and C and D.
Based on the magnitude relationship of llM, selection of the lighting LED of the eraser and its lighting time υ1611 are carried out. Furthermore, C- is the smaller coordinate value of the coordinate C value (C) and the coordinate value (D), D' is the larger coordinate value, and N'' is (
This is the maximum number that can be set for C) and (D>. Also, the setting value of timer XA is the value of coordinate A (A) and the value of coordinate B (
The setting value of timer XB corresponds to the smaller coordinate value of B), and the setting value of timer XB corresponds to the larger coordinate value.

In addition, Figures 6 to 9 are electronic photographic images that have already been input.
, B, C, D8 It is an explanatory diagram showing the area specified by the size relationship of the coordinate data, and FIG.
, (C) < (D), Figure 7 shows (A) 2> (B)
, (C) < (D), Fig. 8 shows (△) < (B),
In the case of (C)> (D), Fig. 9 shows (A)> (B),
The cases of (C)>(D) are shown below. Note that FIGS. 6 to 9 all show the case of copy mode, and only the shaded area in the figures is imaged.

At 5IOI, the leading edge of the image on the photosensitive drum 61 is
When the position facing the eraser is reached, (Δ) and (B) are compared (S102), and if (A) < (B), 51
In step 03, it is determined whether or not the mode is copy mode, that is, whether the mode specified by the key switch 97 is a copy mode for copying within the designated area or an erase mode for blanking the inside of the designated area. Ru. If it is copy mode, all LEDs are turned on (S104
). Conversely, if the mode is erase mode, all LEDs are turned off (8105).

If (A)>(B) in 5102, then (C) and (D) are further compared in 8108.

(C) <(D> and if copy mode (S1
09) Only the LED between C- and D' is turned off (S110
), 0 to C'-1, and D'+1 to N- are lit. Conversely, if it is in erase mode at S109,
Only the LEDs between C' and D' are turned on (S112).

Also, in 8108, if (C)>(D>, then 5
111, the mode is determined, and depending on the result, 8
Proceed to 110 or 5112.

Next, at 5106.5107, timer XA and timer
Give S a 1-star.

Timer XA is about to end 8113), (A) < (B),
If (C) < (D) and it is in copy mode, only the LED between C- and D- is turned off and the others are lit (
S117). Also, (A) (B), (C) < (D)
, Ka, if it is in erase mode, the LE between C' and D-
Turn on only D and turn off the others (8118).

Further, if (A><(B), (C)>(D)) and copy mode is selected, the process proceeds to 8118, and conversely, if erase mode is selected, the process proceeds to 5117.

Also, if (A>> (B)) and copy mode, turn on the command 5121>, and if erase D-do, turn off all LEDs (S122).

Timer XB ends, and if (A><(-8) and copy mode, turn on all LEDs 8126),
If it is in erase mode, turn off the LED (S127
>.

Also, <A)> (B), (C) < (1)) and
If it is copy mode, turn off only the LED between C' and D- (5130), and if it is erase mode, turn off the LED between C' and D-.
Only the LEDs in between are turned on (S131).

Further, if -(A)>(B), (C)>(D) and in copy mode, the process advances to 5131, and if in erase mode, the process advances to 5130.

As described above, it is possible to specify the erase or copy of 9 areas by simply specifying 4 coordinates, depending on the number input as each coordinate data of A, B, C1D (direction size, and copy mode or erase mode specification). becomes possible.

[Effects] In summary, the present invention provides a copying machine that can specify copying or erasing of more areas with relatively fewer coordinates, depending on the magnitude of numerical data input in association with abstractly displayed coordinates. It is.

As described in detail in the embodiments, according to the present invention, more editing and copying modes can be specified with fewer key operations.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the structure of a copying machine according to an embodiment, and FIG. 2 is a plan view of an operation panel. FIG. 3 is a perspective view showing the positional relationship between the image erase unit and the photosensitive drum. FIG. 4 is an explanatory diagram of the relationship between the inter-image erase unit and the erase area. FIG. 5 is a circuit diagram of the control section of the copying machine according to the embodiment. FIG. 6, FIG. 7, FIG. 8, and FIG. 9 are explanatory diagrams showing designated specific areas. FIG. 10 is a flowchart showing the main operations of the copying machine of the embodiment. 11, 12, and 13 are flowcharts showing details of 8209 in FIG. 10. 21...1st CPU 22...2nd CPU4
...Image erase unit

Claims (2)

[Claims] (1) A copying machine that forms an electrostatic latent image by selectively irradiating light on a uniformly charged photoreceptor and develops the electrostatic latent image to obtain a copied image, the copying machine comprising: a light irradiation means capable of performing light irradiation on an arbitrary area of the image editing area; a display means for displaying abstract coordinates defining the boundaries of the image editing area; and a display unit displaying specific coordinate data defining the image editing area on the abstract coordinates. Coordinate input means for inputting numerical data in association with each other; comparison means for comparing the magnitude of the input numerical data in each direction; and area determination means for determining an image editing area according to the comparison results; A copying machine with an editing function, comprising: control means for driving and controlling the light irradiation means based on a signal from the area determination means. (2) The copying machine according to claim 1, wherein the abstract coordinates include four coordinates that divide an image area into nine areas.