JPH0415636A - Image forming device - Google Patents

Abstract

PURPOSE:To easily form an image on a paper of desired size even when the size of an original is not general size by relatively moving a light source part and the original so that a display means comes to a position which shows one end of the size of the original when the size of the paper is specified. CONSTITUTION:When the size of the paper and magnification are specified from a display panel by an operator, the signal thereof is inputted to a CPU 42. The CPU 42 calculates the desired size of the original based on the size of the paper and the magnification and sends a signal which drives a light source driving pulse motor 43 as much as a quantity corresponding to the size of the original to the motor 43. The motor 43 moves the light source part 5 so that a mark 50 on a reflector 5b comes to one end of the size of the original. As a result, the operator can easily align both ends of the original 4 at the positions of the mark 50 on the reflector 5b and an original set position mark 52 on an original guide 51. Thus, even when the size of the original is not the general size, optimum magnifying and reducing rate is easily set.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus, and particularly to an image forming apparatus capable of displaying the set position of a document.

[Prior Art] Conventionally, in order to display the set position of a document, a method has been used in which a mark corresponding to the document size is written on a document guide sheet as shown in FIG.

[Problem to be Solved by the Invention] However, in a copying machine having an enlargement/reduction function, if a mark corresponding to the document size is written on the guide sheet for each magnification, a problem arises in that it becomes extremely difficult to see. In reality, only the mark for the original size was filled in, and the mark corresponding to the document size when the magnification was changed was not written. Also, when the original size is not a standard size and you want to form an image on A4 paper size, for example, you can enlarge or
In order to know the reduction speed, I had to measure the original size and find the enlargement/reduction ratio.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an image forming apparatus in which the set position of a document can be easily determined even when changing the magnification.

Another object of the present invention is to provide an image forming apparatus that can easily determine the enlargement/reduction ratio even when the document size is not a standard size and can form an image on a desired paper size.

[Means for Solving the Problems] In order to achieve this object, an image forming apparatus of the present invention includes a light source section for irradiating a document, and a device for performing exposure scanning by relatively moving the light source section and the document. In an image forming apparatus, the image forming apparatus includes a drive means for a document, a size input means for specifying a paper size, and a process means for forming a document image by receiving light reflected from the document. When the paper size is specified by the display means for indicating the paper size and the size input means, the light source section and the document are moved relative to each other by the drive means so that the display means is in a position indicating one edge of the document size. and control means for controlling the movement.

The device further includes a detection member that detects an open/closed state of the document holding member, and when the detection member detects that the document holding member is in the closed state, the light source section is controlled to be moved to an exposure start position by the driving means. It is equipped with control means to

[Function] According to the image forming apparatus of the present invention having the above configuration, when the paper size is specified by the size input means, the display means for indicating the set position of the original provided in the light source part is set to one side of the original size. is moved by the driving means so that it comes to a position indicating the end of the .

Furthermore, when it is detected that the document pressing member is in the closed state, the light source section is driven and moved to the exposure start position.

[Example code] DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments embodying the present invention.

In the photosensitive and pressure sensitive copying machine 1 of this embodiment, as shown in FIG.
A photosensitive paper consisting of a color developer paper 28 and a color developer paper 28 is used.

In addition, the microcapsule paper 12 used in this example
The surface of the support is coated with microcapsules, and the microcapsules contain dye precursors and the like that react with the rear color developer. A color developer is coated on the surface of the support of the color developer paper 28 and develops color by reacting with a dye precursor.
It is described in the specification of No. 209, and will be omitted here.

At the top of the copying machine 1, there is a document table glass 2 and a document table cover 3.
A desired document 4 is placed face down on the document table glass 2, and the document table cover 3 is closed.

Below the document glass 2 in the upper part of the copying machine 1, a light source unit 5 equipped with a halogen lamp 5a, a reflector 5b, a reflective mirror 8, etc. is movable back and forth along a shaft 13 installed parallel to the document glass 2. It is located in The light source section 5 irradiates light in a line toward the document table glass 2 in a direction perpendicular to the movement direction. The irradiated light passes through the transparent document platen glass 2 and is reflected downward by the document 4 placed thereon.

A mirror portion 9 including reflective mirrors 9a and 9b is disposed below the document table glass 2 and is movable separately from the light source section 5, and the light reflected from the document 4 is reflected by the reflective mirrors 8.
The light beams 9a and 9b are reflected in this order and guided in parallel to the moving direction of the light source section 5.

A normally fixed projection lens 7 and a filter 6 for adjusting the color tone of the copied image are disposed below the document table glass 2, and the light reflected by the reflection mirror 9b is directed to the projection lens 7. incident.

The light projected by the lens 7 is reflected by the reflection mirror group 10a.
, 10b.

An exposure table 1 for exposing the microcapsule paper 12 is arranged on the right side of the reflection mirror 10b, and a reflection mirror 10c for switching the optical path is arranged between the reflection mirror 10b and the exposure table 11. It is set up. Image information on the original 4 is formed on the microcapsule paper arranged along the exposure method 11.

In addition, although the reflecting mirrors 10a and 10b are normally fixed, they are set when enlarging or reducing the size of the latent image formed on the microcapsule paper 12, and are used to change the optical path length according to a change in the projection magnification m. It is configured to be able to move integrally in the axial direction of the shaft 13.

On the other hand, a cartridge 15 is disposed in the center of the copying machine 1, and a long microcapsule paper 2 is stored in a removable cartridge 5 wound around a cartridge shaft 14. There is.

With the cartridge 15 set at a predetermined position within the base, the leading end of the microcapsule paper coat 2 is pulled out toward the exposure table 11. Below the exposure table 11 is a feed roller 19. A dancer roller 21 for tension adjustment is provided.

To the right of the dancer roller 21 is a body roller 22a.
and a pressure developing device 22 including a backup roller 22b.
On the right side of the pressure developing device 22,
As will be described later, a separation roller 23 is provided to separate the microcapsule paper 12 and color developer paper 28 that are in close contact with each other.
A winding shaft 24 for fitting and holding the microcapsule paper 12 is disposed between the separating roller 23 and the cartridge 315.

Microcapsule paper 1 coming out from the top of cartridge 15
2 is guided by the tension roller 9 to the exposure table] 1
After passing through a dancer roller 21 and a pressure developing device 22, the film is further guided to a separation roller 23, and then wound onto a winding shaft 24. In addition, cartridge 315
The unexposed microcapsule paper 2 after exiting the microcapsule paper is kept unexposed by the blocking cover.

A paper feed cassette 29 containing a color developer 28 is installed below the pressure developing device 22 . The information on the paper feed cassette 29 includes a suction cup type paper feed mechanism 30 that sucks paper using negative pressure suction, and the developer paper 28 is taken out one by one by the paper feed mechanism 30. . A feed guide 31b and a feed 31 are provided between the yarn feeding mechanism 30 and the pressure developing device 22.
a, 31b, 31. C is arranged, and color developer paper 328
are feed rollers 31a, 31b, 31c, feed guide 31
d and carried into the pressure developing device 22.

On the right side of the pressure developing device 22, there is a separation chute 2 which will be described later.
A heat fixing device 32 is provided to the right of the separation chute 27, and a paper discharge tray for storing the color developer paper 28 on which an image is formed is provided to the right of the heat fixing device 332. 33 are arranged.

Further, this copying machine has an autoloading function for automatically setting the microcapsule paper 12 on a predetermined transport path within the apparatus. This is a function that automatically pulls out the leader film part attached to the tip of the microcapsule paper 12 into the apparatus, transports it inside the apparatus, and winds it around the winding shaft 24. As a result, the microcapsule paper 1 following the leader film section 18
2 is also wound onto the winding shaft 24, and the centrifugation into the apparatus is also completed. For automatic loading, a half-moon roller 17 is installed between the roller 19 and the cartridge 15 to pull out the leader film section, and a separation unit 27 is rotated to guide the leader film to the take-up shaft 24. installed as possible. Around the winding shaft 24,
In order to wind the leader film, a machining guide 25 and a machining guide 26 are provided.

Next, the operation of this copying record will be explained.

When the cartridge 15 is set in the copying machine 1, autoloading is started.

The half-moon roller core rotates from ] to several times (-, leader film section 1) in the transport direction only when autoloading starts.
8 is not sent out to roller 20. Thereafter, it stops, and subsequent conveyance is performed by driving the rollers 20.

Makitori guide sea urchin 25. When the automatic loading guide 26 and the separation chute 27 are rotated to the position shown by the - dotted chain line, the leader film section 18 attached to the tip of the microcapsule paper 12 is wound around the winding shaft 24. , Makitori guide sea urchin 25. The machining guide seat 26 and the separation chute 27 return to the positions indicated by solid lines and copying is possible.

When the copy start key is operated, the reflection mirror 8
．． The halogen lamp 5 has a moving speed (1/m)xv, where the transport speed of the microcapsule paper 12 is V and the projection magnification is m.
the reflection mirror 9a.

9b moves at a moving speed (1/2 m) x V.

The conveyance speed of the microcapsule paper 12 is determined by the mirror group 8.9a.
Since the moving speed of the document 9b is synchronized as described above, latent images of predetermined lines of the document 40 are sequentially formed on the microcapsule paper 12 as it passes through the exposure table 11. Note that the above-mentioned predetermined speed ratio is determined in advance based on the set value of the magnification.

The microcapsule paper 12 on which the latent image has been formed is transported,
The uppermost color developing paper 28 of the yarn feeding cassette 29 is connected to the yarn feeding mechanism 30.
．． It is conveyed by feed rollers 31a, 31b31C, etc.

The pressure developing device 22 is supplied with the microcapsule paper 2 and the color developer paper 28 in close contact with each other, and the microcapsule surface on which the latent image of the microcapsule paper 12 is formed and the color developer of the color developer paper 28 are supplied to the pressure developing device 22. The agent-applied surface is sandwiched between the large-diameter roller 22a and the backup roller 22b, and pressure is applied thereto. This pressure destroys the unexposed microcapsules and forms an image on the developer paper 28.

The microcapsule paper 12 and the color developer paper 28 that have come out of the pressure development device 22 are separated by a separation roller 23, and then the color development of the color developer paper 28 is promoted by the heat roller 32g of the heat fixing device 32 to form an image. After that, the paper ejection roller 32b
The paper is discharged to the paper discharge tray 33. The separated microcapsule paper 12 is wound onto the winding shaft 24 via the M roller 23e.

Next, the configuration of the vicinity of the document table will be described in detail with reference to FIG.

A document guide 51 is provided at one end of the document table glass 2 to guide the document 4 when the document 4 is placed on the document table glass 2.
is provided. The document guide 51 is provided with a document set position mark 52 that indicates a set position corresponding to the size of each document when placing the document 4 on the document table glass 2. A light source section 5 consisting of a halogen lamp 5a, a reflector 5b, etc. is provided below the document table glass 2. The light source section 5 is connected to a pulse motor 43 for driving the light source. Marks 50 are provided on the upper surface of the reflector 5b to indicate the document set position according to each document size. The mark 50 on the reflector 5b and the original setting position mark 52 on the original guide indicate both ends of the position where the original is to be set.

Next, the electrical configuration will be explained using FIG. 3.

The display panel 41 for inputting paper size, magnification, etc. has a CP
U42 is connected, and the input signal from the display panel 42 is connected to C.
It is input to PU42. The CPU 42 is connected to a light source driving pulse motor 43 and is configured to drive the light source section 5 by a predetermined amount based on a signal from the CPU 42 .

Next, to describe the operation of this embodiment, the operator:
When the paper size and magnification are specified on the display panel 41, the signals are input to the CPU 42. The CPU 42 calculates the required document size from the paper size and magnification, and sends a signal to the drive pulse motor 43 to drive the light source drive pulse motor 43 by an amount corresponding to the document size. The drive pulse motor 43 moves the light source section 5 and moves the reflector 5.
Place the mark 5o on b at one end of the document size. Therefore, both ends of the original 4 can be easily placed at the positions of the mark 50 on the operator beam flap 5b and the original setting position mark 52 on the original guide 51.

Additionally, this function allows the following usage methods. The reason is that when the document is not a standard size and you want to output it to A4 size, it is usually necessary to measure the document size and calculate the enlargement/contraction rate in order to know the enlargement/contraction rate. However, according to the present invention, the original is first set in alignment with the original setting position mark 52 on the original guide 51.

Then, the user specifies the paper size of A4 size on the display panel 4]. Then, while operating the key for specifying the enlargement/reduction ratio, the mark 50 on the reflector 5b is aligned with the other edge of the document. The scaling ratio at that time is the optimal scaling ratio in that case, and the optimal scaling ratio can be set without the need to measure the document size.

The present invention is not limited to the embodiments detailed above, but
Various modifications can be made without departing from the spirit of the invention.

For example, if you start copying from the state where the document set position is indicated, the light source unit 5 will start copying after returning to the document guide side, so the copying time will be slightly longer. It is preferable to provide a sensor that can display the document setting position when the document table cover is open, as in this embodiment, and to move the light source unit 5 to the copy start position when the document table cover is closed. . Further, even if a document feeding device such as an ADF is installed, similarly, in the mode of the ADF, etc., it is sufficient to remain at the copy start position after the light source section.

In the above embodiment, the mark is written on the reflector 5b, but as long as the mark is on the member on the light source unit 5 that scans the illumination and is visible from above through the document table glass 2, it can be placed at any position. No problem.

Further, in the above embodiment, the document setting is described using a device that aligns the center, but it is clear that the document can also be set using a device that aligns the corners.

[Effects of the Invention] As is clear from the detailed description above, according to the present invention,
Even when enlarging/reducing, the document setting position can be easily determined, and even when the original size is not a standard size, the optimal enlargement/reduction ratio can be easily set.

[Brief explanation of drawings]

FIG. 1 to FIG. 5 is a light source part, 4
1 is a display panel, 42 is a CPU, 43 is a pulse motor for driving a light source, 50 is a mark, 5] is a document guide, and 52 is a document setting position mark.

Claims (1)

[Scope of Claims] 1. A light source unit for irradiating a document, a drive unit for relatively moving the light source unit and the document for exposure scanning, a size input unit for specifying a paper size, and a size input unit for specifying a paper size; In the image forming apparatus, the paper size is determined by the display means provided in the light source section and for indicating the set position of the document, and the size input means. The apparatus further comprises a control means for controlling the light source section and the original to be moved relative to each other by the driving means so that, when specified, the display means comes to a position indicating one edge of the original size. image forming device. 2. A detection member for detecting an open/closed state of a document holding member is provided, and when the detection member detects that the document holding member is in an open/closed state, the light source section is controlled to be moved to an exposure start position by the driving means. The image forming apparatus according to claim 1, further comprising a control means.