JPH0244375A - Image forming device with marking function - Google Patents

Abstract

PURPOSE:To obtain making function by mechanically shifting a sheet, on which an image is transferred, such as a copying paper in both carrying vertical and carrying horizontal directions and then transferring the same image again. CONSTITUTION:When an input means 103 inputs a shifting position for a transfer image in the vertical direction in which a sheet is carried, a timing control means 104 calculates the time to start rotating a roller 101 by which a sheet is fed from an intermediate tray 102 to a photosensitive drum based on the inputted shifting position of the transfer image in the sheet carrying vertical direction and based on the calculated time, the means 104 controls the roller 104. Since the paper on which an image is transferred is mechanically shifted in the sheet carrying vertical direction and the same image is transferred again, a normal image and the image shifted vertically are transferred on exactly the same place. Thus, marking effect is produced.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an image forming apparatus such as a Hikishabare, and in particular to an image forming apparatus for making part or all of an image formed on paper stand out. Regarding the marker function.

(B) Conventional technology In the past, for example, in a copying machine, when attempting to mark a part of an image by combining images, it was possible to automatically switch between two or more colors. In the case of a color copying machine, as shown in Fig. 16, area E is designated in advance by methods such as trimming and masking, and as shown in Fig. 17, the designated area E is marked with diagonal lines. After making a solid copy (filling in with a negative color), a normal copy is made on top of it in a different color to provide a marker function.

(c) Problems to be solved by the invention However, in this case, it is only possible to specify a certain range, so for example, it is difficult to mark images at distant positions on the same sheet of paper at the same time. is not possible, and if the model is designed to specify the area to be marked using diagonal lines of a rectangle,
As shown in Fig. 18, in order to specify two points, the upper left corner I7 and the lower right corner R, in reality, when you want to mark only the area A shown with diagonal lines in the figure, it is necessary to mark only the area A that is not the shaded area. It may happen that even area B is marked.

This invention was made in consideration of these circumstances, and has a marker function by mechanically shifting paper, such as copy paper, on which an image is transferred in the vertical direction or in the direction of the skin. An image forming apparatus with a marker function is provided.

(d) Means for solving the problem FIG. 1 is a block diagram showing the configuration of the invention according to claim 1 of the present application.

In this figure, [01 is a roller that supplies paper and starts rotating at a predetermined timing in order to transfer the developed image onto the photoconductor, and +02 is a roller that sends the transferred paper to the photoconductor again. +03 is an input means for inputting the shift position of the transferred image in the vertical direction of paper transport; 104 is an input means for exposing the paper from the intermediate tray based on the input shift position of the transferred image in the vertical direction of paper transport; This timing control means calculates the rotation start timing of the roller when supplying the product to the body and controls the roller accordingly.

FIG. 2 is a block diagram showing the configuration of the invention according to claim 2 of the present application.

In this figure, 20+ is an intermediate tray that temporarily stores the transferred paper in order to send it to the photoreceptor again and can move the paper left and right with respect to the conveyance direction, and 202 is the transferred image in the lateral direction of paper conveyance. 203 is an input means for inputting the soft position of the transfer image in the direction of the paper transport section, and 203 is an intermediate unit that calculates the paper movement direction and the amount of movement of the intermediate tray based on the input shift position of the transferred image in the direction of the paper transport unit, and controls the intermediate tray accordingly. It is a tray control means.

FIG. 3 is a block diagram showing the configuration of the invention according to claim 3 of the present application.

In this figure, 301 is a roller that supplies paper and starts rotating at a predetermined timing in order to transfer the developed image onto the photoconductor, and 302 is a roller that temporarily stores the transferred paper to send it to the photoconductor again. 303 is an input means for inputting the shift position of the transferred image in the vertical direction of paper transport and the horizontal direction of paper transport; 304 is an input means for transporting the paper; Timing control means calculates the rotation start timing of the roller when feeding the paper from the intermediate tray to the light body 15 based on the shift position of the transferred image in the vertical direction, and controls the roller accordingly; 305 is the input paper transport; The intermediate tray control means calculates the paper moving direction and the amount of movement of the intermediate tray based on the shift position of the transferred image in the lateral direction, and controls the intermediate tray accordingly.

Note that the rollers 101 and 301 in this invention are, for example, rollers in a copying machine that start the transfer sheet toward the photoreceptor, and are usually timing rollers,
It is also called a registration roller.

Further, the timing control means 104.3 in this invention
04 and the intermediate tray control means 203 and 305, it is generally convenient to use a microcomputer consisting of a CPU, ROM, RAM r, .

(E) Effect According to the invention of claim 1 of the present application, from the input means 103,
When the shift position of the transferred image in the vertical direction of paper transport is input, the timing control unit 104 controls when feeding the paper from the intermediate tray 102 to the photoconductor based on the input soft position of the transferred image in the vertical direction of paper transport. The rotation start timing of the roller 101 is calculated, and the roller 101 is controlled accordingly.

Therefore, the paper to which the image has been transferred is mechanically shifted in the longitudinal direction of paper transport and the same image is transferred again.
The normal image and the vertically shifted image are transferred in an overlapping manner, thereby creating a mark effect.

Further, according to the invention of claim 2, from the input means 202,
When the shift position of the transferred image in the lateral direction of paper transport is input, the intermediate tray control unit 203 controls the paper movement direction of the intermediate tray 201 and its moving layer based on the input shift position of the transferred image in the lateral direction of paper transport. Calculate,
The intermediate tray 201 is controlled accordingly.

Therefore, when the paper to which the image has been transferred is mechanically shifted in the lateral direction of transport and the same image is transferred again, the normal image and the lateral shifted image are transferred overlappingly. According to the third aspect of the invention, the shift position of the transferred image in the vertical direction of paper transport and the horizontal direction of paper transport is input from the input means 303. Then, the timing control unit 304 calculates the rotation start timing of the roller 301 when feeding the paper from the intermediate tray 302 to the photoreceptor based on the input shift position of the transferred image in the paper transport longitudinal direction I, controlling the roller 301 accordingly;
The intermediate tray control unit 305 calculates the paper moving direction and the amount of movement of the intermediate tray 302 based on the input shift position of the transferred image in the lateral direction of paper transport, and controls the intermediate tray 302 accordingly.

Therefore, the paper on which the image has been transferred is mechanically shifted in the vertical and horizontal directions of the paper, and then the same image is transferred again. The shifted images are transferred in an overlapping manner, thereby creating a mark effect, and by changing the soft position, it is possible to provide various marker functions.

(f) Examples Hereinafter, the present invention will be described in detail based on examples shown in the drawings. Note that this invention is not limited to this.

FIG. 4 is an explanatory diagram showing the internal structure of an embodiment in which the present invention is applied to a copying machine.

In the figure, reference numeral 1 denotes a document mounting table on which an original is placed, and 2 an electrostatic latent image is formed by reflected light from the original that has been exposed and scanned by a lamp 3 (indicated by - dotted line C in the figure). a photosensitive drum; 4 is a first developing device storing a first toner; 5 is a first developing device;
A second developing device that stores a second toner of a different color from the toner, and performs two-color copying using the first toner (e.g., black toner) and the second toner (e.g., red toner). is possible.

6 is a blank lamp, and when an area is specified for trimming, it cuts the area other than the specified area, and
When areas are designated by masking, static electricity is removed from each designated area. Reference numeral 7 indicates a feeding section M in which a paper feeding cassette for storing paper of various sizes is installed; 8 indicates a transport roller;
9 is a registration roller.

When the paper is fed from the paper feed section 7, the registration roller 9 temporarily stops the paper so that the toner on the photoreceptor drum 2 is properly transferred to the paper, and adjusts the rotation of the photoreceptor drum 2. At a predetermined timing, the clutch is engaged to start rotating and feed out the paper. IO
is a pre-registration switch that confirms that the paper has been fed to the registration rollers 9.

Reference numeral 11 denotes an intermediate tray in which the paper is temporarily stored in order to send the transferred paper to the photosensitive drum 2 again, and the paper is moved laterally to the right or left with respect to the conveying direction by a mechanism to be described later. Is possible.

Reference numeral 12 indicates an intermediate tray paper feed roller that feeds the paper stored in the intermediate tray II to the photosensitive drum 2; 13 indicates a conveyor belt that transports the transferred paper to the fixing unit 14; and 15, 16 and 17 indicate the transferred paper. is the intermediate tray ti+, which is a conveyance roller when the paper is fed, and 18 is a paper discharge unit from which the copied paper is finally discharged.

The paper fed from the paper feed section 7 passes through the conveyance roller 8, stops once at the registration roller 9, is conveyed in accordance with the rotation timing of the photosensitive drum 2, the image is transferred, and is fixed by the conveyance belt 13. section 14, and is further stored in the intermediate tray 11 via conveyance rollers 15, 16, and 17.

Then, the sheet is conveyed again from the intermediate tray feeding station roller 12 to the registration roller 9, and after being transferred onto the same surface again by the photoreceptor drum 2, it passes through the conveyance belt 13 and the fixing section 14, and is finally discharged. It is discharged to section 18.

FIG. 5 is a perspective view of the top of the copying machine shown in FIG. 4.

As shown in the figure, a document holder 20 located on a document table I is provided with a tablet 22 for specifying an area for trimming or masking.

To specify the area for trimming or masking, place originals of various sizes on the tablet 22 with the original side facing up, specify the area with the light pen 21, lift the original holder 20, and place the original on the original table 1. By placing the photosensitive drum 2 on the photosensitive drum 2 and starting copying, the corresponding area of the photoconductor drum 2 will be blank so that areas other than the specified area will not be copied if it is trimming or the specified area will not be copied if it is masking. The lamp 6 removes static electricity. 23 is an operation unit for performing various instruction operations.

FIG. 6 is a configuration explanatory diagram showing the configuration of the intermediate tray 11. As shown in FIG.

As shown in the figure, the intermediate tray 11 has a bent recess 28 formed in the bottom plate 28, and left and right side regulating plates 29λ, 29b that guide the both side edges of the paper fed into the bent recess 281 from the direction indicated by the arrow. The structure supports this.

The side regulation plates 29a, 29b are formed in an oval shape by substantially horizontal plane parts 30a, 30b on which the paper is sorted, and side parts 31a, 31b rising from one end of the plane parts 30a, 30b.
They can be moved toward or away from each other in the transverse direction with respect to the paper conveyance direction.

On the mutually opposing surfaces of the side parts 31a and 31b, inclined plates 32a and 32b, which rotate according to the amount of paper stored when the paper is stored on the flat parts 30a and 30b, are arranged on the bending part 33.
It is rotatably provided around a and 33b.

A worm-shaped shaft 34 is passed through the bottom plate 28, and an intermediate tray moving motor 3 consisting of a stepping motor is connected to the bottom plate 28.
5 rotates the shaft 34 via the bevel gears 36 and 37, and it is possible to move the bottom plate 28 in the lateral direction of paper transport, that is, in the left and right directions with respect to the paper transport direction.

A pulse plate 38 in which a slit for transmitting light is formed is attached to the intermediate tray moving motor 35, and the rotation angle of the pulse plate 38 is detected by three photo-interchangers.

Therefore, by controlling the rotation direction of the intermediate tray moving motor 35 and controlling its rotation angle using the photointerrupter 39, it is possible to arbitrarily control the left/right moving direction and moving distance of the intermediate tray 11. .

Reference numeral 40 denotes a side regulating plate moving motor, which moves the side regulating plate 29a by a wire 41 based on the width of the paper to position the paper to be accommodated.

29b to approach or separate from each other.

In FIG. 6, in order to make the diagram easier to read, only the left side regulating plate 29a side is shown with a chain double-dashed line when the intermediate tray 11 is moved to the left with respect to the paper transport direction. Regarding the state moved to the right side, only the right side regulating plate 29b side is shown with a two-dot chain line.

FIG. 7 is a block diagram showing the control circuit of the embodiment.

The microcomputer 50 has a timer for time counting, operates according to a program stored in the ROM 51, and stores data necessary for control in the RAM 52.

When the microcomputer 50 receives a signal from the tablet 22 specifying a static elimination area on the document, it outputs a static elimination signal for that area to the blank lamp 6.

Then, the direction of the marker is input using the marker one-direction setting key 54 of the operation unit 23, and the marker movement distance key 5
5, when the vertical and horizontal marker movement distances are input and the print key 53 is operated, the photosensitive drum 2 is rotated to perform a copying operation, and the copied paper is sent to the intermediate tray 11. If necessary, an automatic developer exchange 56 switches between the first toner and the second toner to change the color of the copy.

Further, if the signal from the marker direction setting key 54 includes a horizontal component, the microcomputer 50 also uses the marker one direction setting key 54 to determine whether to move the intermediate tray 11 to the left or right. The rotation direction of the intermediate tray moving motor 35 is determined based on the signal obtained from the photointerrupter 39 of the motor pulse plate 38. 35 rotation amount is controlled.

Then, so that the paper is sent out from the intermediate tray 11,
Intermediate tray paper feed clutch 1 of intermediate tray paper feed roller 12
2a, and then the paper moves to the registration roller 9.
It is confirmed by the signal from the pre-registration switch 10 that it is in front of the register.

Furthermore, if the signal from the marker one-direction setting key 54 described above includes a vertical component, the marker one-direction setting key 54 also provides information on which direction to shift the transfer position. Then, it is determined whether the on-timing of the registration clutch 9a, that is, the rotation start timing of the registration roller 9, should be advanced or delayed, and the transfer position of the paper is adjusted by a distance corresponding to the signal from the marker movement distance key 55. , a signal is sent to the Renost clutch 9a at a timing earlier or later than a predetermined timing so that the copy is shifted forward or backward.

In the above-described control, the intermediate tray moving motor 35 is controlled in the lateral direction of the sheet conveyance direction, and the registration clutch 9a? This control is in the vertical direction of paper conveyance, and each movement distance is controlled based on a signal from the marker movement distance key 55.

The operation in such a configuration will be explained based on the flowcharts shown in FIGS. 8 and 9.

First, in FIG. 8, the user specifies an area to be marked using the tablet 22 (step 4).
01), when the direction of the marker is input using the keys on the operation unit 23 (step 402), the direction of the marker is determined (step 403), and if it is vertical, the moving distance, XCm, is further input. (step 40)
4) The moving distance X is converted into the on-timing time 1+ of the registration roller 9 (step 405).

If the direction of the marker is diagonal, the moving distance, vertical XCm, and horizontal ycm are input (step 40).
6) The moving distance X is the on-timing time of the registration roller 9 1. At the same time, the moving type My is converted into the number of moving pulses of the intermediate tray 11 (step 407
).

Further, if the direction of the marker is the horizontal direction, the moving distance, ycm, is input (step 408), and the moving type My is converted into the number of moving pulses t of the intermediate tray II (step 409).

Then, when the print key 53 is operated (step 4
10), the second developing device 5 is automatically set, and during copying, the blank lamp 6 is turned on in an image area other than the designated area to eliminate static electricity (step 411), and the conveyance path is moved in the direction of the intermediate tray 11. The transfer paper is placed in the intermediate tray 11 (step 413), the developer is switched to the first developer 4, and the developer is switched to another color (step 414).

Furthermore, in FIG. 9, the direction of the marker is determined again (step 415), and if the direction is a horizontal or diagonal direction, the intermediate tray 11 is moved horizontally with respect to the transport direction ( Step 416), the counter memory a is reset (Step 417), and the intermediate tray moving motor 35 is rotated while counting the rotational steps (Step 418). When the count reaches t, the intermediate tray 11 is rotated. Step 41 when the horizontal movement is complete
9), the direction of the marker is determined again (step 42).
0).

In this step 420, if the direction of the marker is horizontal, paper feeding is started from the intermediate tray 11 (step 421), and when the pre-registration switch 10 is turned on (step 422), the paper transfer starts. will be started.

In this case, the time count memory b of the microcomputer 50 is reset (step 423), and the time count memory b of the microcomputer 50 is reset to 1
Counting begins in milliseconds (step 424);
When it is determined that the normal copy timing S has elapsed (step 425), the registration clutch 9a is turned on (step 426), and the copy process is performed (
Step 427), and the final paper is ejected (Step 428).

Further, if the direction of the marker is vertical in step 415, and if the direction of the marker is diagonal in step 420, the intermediate tray 11
Paper feeding is started (step 429), and when the pre-registration switch 10 is turned on (step 430), paper transfer is started.

In this case, the counter memory b is reset (step 431) and starts counting in units of 1 millisecond (step 432L, normal copy timing S).
Timing S + t with milliseconds added or subtracted from the time of
+ When it is determined that time has elapsed (step 43
3), the resist clutch 9a is turned on (step 4)
34), copy processing is performed (step 435L) and the final paper is ejected (step 436).

Figures 10 to 15 are explanatory diagrams showing an example of a copy that has been subjected to marker processing in this way, and when the copy is shifted in the vertical direction as shown in Figure 10, for example, only λ'' is enlarged. If you look at it, it will shift up and down as shown in Figure 11.
If the copy is shifted horizontally as shown in Figure 12,
If the copy is made with a horizontal shift as shown in FIG. 13 or a diagonal shift as shown in FIG. 14, the marker processing is performed with a diagonal shift as shown in FIG. 15.

In this way, by mechanically shifting the copy paper in the vertical and horizontal directions and transferring the same image again, the marking function of making the image in the designated area stand out can be achieved. Even within the area, unnecessary marker solids (filled areas) are not copied onto blank paper, etc., and by changing the vertical and horizontal movement position, various marker functions can be used. It becomes possible to have

In addition, in this example, when transferring to paper,
At the time of the first transfer, the second developing device 5 is automatically set, and the second developing device 5 is automatically set.
It has been explained that at the time of the first transfer, the image is automatically switched to the first developing device 4 for each transfer. The second phenomenon device 4.5 can be switched from the operation unit 23,
As a result, it is of course possible to specify the toner color for the first and second transfers from operation $23.

(g) Effects of the Invention According to this invention, the same image can be transferred again by shifting the paper, such as copy paper, on which an image is transferred at any time in the longitudinal and lateral directions of transport. Since it has a marker function, even if it is within the designated area, unnecessary marker solids (filled areas) will not be copied onto blank paper, etc., and the shift position of the transferred image can be changed. In particular, it becomes possible to provide a variety of marker functions in one go.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the structure of the invention according to claim 1 of the present application, Fig. 2 is a block diagram showing the structure of the invention also related to claim 2, and Fig. 3 is a block diagram showing the structure of the invention also related to claim 3. FIG. 4 is a block diagram showing the internal structure of an embodiment in which the present invention is applied to a copying machine, and FIG.
FIG. 6 is a configuration explanatory diagram showing the configuration of the intermediate tray, FIG. 7 is a block diagram showing the control circuit of the embodiment, and FIGS. 8 and 9 are Flowchart showing the operation of the embodiment, 10th~! Figure 5 is an explanatory diagram showing an example of a copy that has been subjected to marker processing, Figures 16 and 17
The figure is an explanatory diagram showing an example of copying using the conventional marker function.
FIG. 18 is an explanatory diagram showing area designation of the conventional marker function. I...Original placing table, 2...Photosensitive drum, 4...First developer, 5...Second developer, 6... ...Blank lamp, 7... Paper feed section, 8... Conveyance roller, 9... Registration roller, 9+L... Registration clutch, 10
・・・・・・Pre-registration switch, +! ...Intermediate tray, 12...Intermediate tray paper feed roller, 2a...
...Intermediate tray paper feed crutch, 4...Fixing section, 5.16.17...Transport roller, 9119.
Paper ejection section, 23... operation section, 28... group/bottom plate,
9a 29b...Side regulation plate, 4...Shaft, 5...Intermediate tray movement motor, 637...
...Bevel gear, 38...Pulse plate, 9...
・Photointerrupter, 0...Microcomputer, 51...
・RAM. 2...ROM, 53...Print key 4...Marker one-way setting key 5...Marker movement distance key 1 Figure 42 Figure 32 Figure 1o Figure 12 Zuka 15 Figure

Claims (1)

[Scope of Claims] 1. An image forming apparatus that develops an electrostatic latent image formed on a photoreceptor, supplies paper to the photoreceptor by a roller that starts rotating at a predetermined timing, and transfers the developed image. , an intermediate tray for temporarily storing the transferred paper in order to send it to the photoreceptor again, an input means for inputting the shift position of the transferred image in the vertical direction of paper transport, and an input means for inputting the shift position of the transferred image in the vertical direction of paper transport. An image forming apparatus with a marker function, comprising timing control means for calculating the rotation start timing of a roller when feeding paper from an intermediate tray to a photoreceptor based on a shift position and controlling the roller accordingly. 2. In an image forming device that develops an electrostatic latent image formed on a photoreceptor, supplies paper to the photoreceptor by a roller that starts rotating at a predetermined timing, and transfers the developed image. an intermediate tray that temporarily stores the paper in order to send it to the photoreceptor again and can move the paper left and right with respect to the paper transport direction; an input means that inputs the shift position of the transferred image in the lateral direction of paper transport; An image forming apparatus with a marker function includes an intermediate tray control means that calculates the direction of paper movement of the intermediate tray and the amount of movement thereof based on the shift position of the transferred image in the lateral direction of paper conveyance, and controls the intermediate tray accordingly. 3. In an image forming apparatus that develops an electrostatic latent image formed on a photoreceptor, and transfers the developed image by supplying paper to the photoreceptor by a roller that starts rotating at a predetermined timing, the transferred paper An intermediate tray that temporarily stores the paper to send it to the photoreceptor again and allows the paper to be moved left and right with respect to the transport direction, and an input that inputs the shift position of the transferred image in the vertical and horizontal paper transport directions. and a timing control means for calculating the rotation start timing of the roller when feeding the paper from the intermediate tray to the photoreceptor based on the input shift position of the transferred image in the longitudinal direction of paper transport and controlling the roller accordingly. , an image with a marker function, comprising an intermediate tray control means that calculates the paper movement direction and the amount of movement of the intermediate tray based on the input shift position of the transferred image in the lateral direction of paper transport, and controls the intermediate tray accordingly. Forming device.