JPH04310937A - Image forming device - Google Patents

Abstract

PURPOSE:To obtain an output image without out-of-focus with respect to the originals of various kinds of focusing distances by providing an input means which sets the kind of the original and an adjustment means which adjusts the focus of a lens. CONSTITUTION:A photosensitive area 21 is provided in a cassette main body by being closely brought into contact with the outer end of an aperture part for first drawing 19. Besides, a supporting cylinder 22 is provided through one side part of a case 1 by being faced to the area 21 and an image forming lens for exposure 23 is fitted on the cylinder 22 through an adjustment cylinder 24. By rotating the cylinder 24 by a motor 51, the lens 23 can be moved and adjusted in the direction of an optical axis according to the position of an object. That means, the input means which sets the kind of the original and the adjustment means which adjusts the focus of the lens according to the data of the input means are provided. Therefore, the output image without out-of-focus is obtained with respect to the original of the various kinds of focusing distances.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus that uses a photosensitive pressure sensitive sheet and a color developer sheet to form an image based on a subject.

0002

2. Description of the Related Art Conventionally, a device for copying a certain area on a desired object has been disclosed in Japanese Patent Laid-Open No.
There is an image forming apparatus described in Japanese Patent No. 58447 and the like.

The applicant has also devised an image forming apparatus as shown in FIG. 4, for example. The image forming apparatus is moved so that the viewing opening 45 is positioned above the subject 40, and the light source 48 is turned on using a switch to illuminate the subject 40, and the light reflected from the subject 40 exposes the photosensitive pressure sensitive sheet 11. Then, the exposed photosensitive pressure-sensitive sheet 11 and color developer sheet 12 are developed on the color developer sheet 12 by a pressure developing device 25, and then heat-fixed by a heat fixing device 29. The optical focus is on only one image plane.

0004

[Problem to be Solved by the Invention] However, when copying the label of a compact disc or music tape, there is a problem that if the copy is taken while the disc is in the case, the focus will shift due to the thickness of the case, resulting in a blurred image. .

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 capable of obtaining output images without blurring for originals having various focal lengths. be.

[0006]

[Means for Solving the Problems] In order to achieve this object, the image forming apparatus of the present invention includes an input means for setting the type of document, and an adjustment means for adjusting the focus of a lens according to the data of the input means. We are prepared.

[0007]

[Operation] The input means of the image forming apparatus of the present invention having the above structure sets the type of document, and the adjustment means adjusts the focus of the lens according to the data of the input means.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment embodying the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a case 1 of the image forming apparatus is formed into a substantially box-like shape, and a lid 2 is attached to the upper opening of the case 1 so as to be rotatable in opening and closing by means of a support shaft 3. As shown in FIG. Further, an opening 46 for capturing an image is provided at the lower left of the case 1, and a viewing opening 45 is provided at a position facing the opening 46 of the lid 2. The cassette 4 is removably housed in the case 1 and is positioned between a pair of clamping pieces 5 and 6, which are disposed opposite each other in the case 1 and the lid 2. The main body 7 of the cassette 4 is made of a light-shielding material to prevent light from entering from the outside, and has first and second
Storage portions 8 and 9 are formed at predetermined intervals.

The image forming sheet 10 consists of a long photosensitive pressure sensitive sheet 11 and a color developer sheet 12, and the photosensitive pressure sensitive sheet 11 and the color developer sheet 12 are each attached to a spool 13.
, 14 are stored in the first storage section 8 of the cassette main body 7 in a rolled state. Figure 3
As shown in FIG.
It is wrapped so that the surface is on the outside. The color developer sheet 12 is made by coating a color developer 18 on a transparent or white base sheet 17, and is wound around the base sheet 17 so that the color developer 18 side faces inside.

The first drawer opening 19 is formed on one side of the first storage section 8, and a guide roller 20 is provided inside the first storage section 8 so as to face the inner end thereof. The photosensitive pressure sensitive sheet 11 and the color developer sheet 12 are placed on the guide roller 20 so that the photosensitive agent 16 surface and the color developer 1 surface are
The eight sides are superimposed so as to be joined to each other, and in this state, it is pulled out from the first drawer opening 19.

The photosensitive area 21 is provided in the cassette body 7 in close proximity to the outer end of the first drawer opening 19 . The support cylinder 22 is provided through one side of the case 1 in opposition to the exposure area 21 , and an exposure imaging lens 23 is attached to the support cylinder 22 via an adjustment cylinder 24 . By rotating the adjustment cylinder 24 by the motor 51, the imaging lens 23 can be adjusted to move in the optical axis direction depending on the position of the subject.

A mirror 38 is disposed above the image capture opening 46 at the lower left of the apparatus, and during exposure, the mirror 38, together with a mirror 39 disposed below the imaging lens 23, reflects light reflected from the original 40. is guided to the imaging lens 23, but
Normally the mirror 38 is on the right side and is a part 43 of the case 1.
Together with 44, it serves as a shutter to prevent external light from exposing the photosensitive pressure sensitive sheet 11. A light source 48 and a reflector 47 for illuminating the original 40 are provided at the lower right of the mirror 38.

With the mirror 38 positioned on the left, light from the subject reaches the image forming sheet 10 in the exposure area 21 through the imaging lens 23, so that a part of the photosensitive pressure sensitive sheet 11 is exposed. A latent image based on the subject is formed by exposure through the base sheet 15.

A pressure developing device 25 as a pressure developing section consisting of a pair of pressure rollers 26 is provided in the case 1, and when the cassette main body 7 is installed in the case 1, the transparent It is placed within the moving path of the image forming sheet 10 via the hole 27 . Then, by bringing the exposed portion of the photosensitive pressure sensitive sheet 11 and the color developing sheet 12 into pressure contact between the pressure roller 26 of the pressure developing device 25,
The latent image on the photosensitive pressure sensitive sheet 11 is transferred and developed onto the color developing sheet 12.

A winding shaft 28 is provided within the cassette body 7, and the photosensitive pressure sensitive sheet 11 after development is wound around this winding shaft 28. A thermal fixing device 29 as a thermal fixing unit consisting of a thermal head is provided in the case 1, and when the cassette main body 7 is installed in the case 1, the guide roller 31 is inserted through the through hole 30 provided in the cassette main body 7. is pressed against. Then, the heat fixing device 29 allows the guide roller 3 to
The image on the color developing sheet 12 that is transported along the color developing sheet 12 is fixed by heating.

The double-sided adhesive tape 32 is stored in the second storage section 9 of the cassette main body 7 in a state where it is wound around a spool 33 in the form of a roll. The second drawer opening 34 is formed on one side of the second storage section 9, and inside the second storage section 9, facing the inner end thereof, there is a guide roller 35 as a guide member and a protrusion that presses against the guide roller 35. 36 are provided. Then, before the color developer sheet 12 after image formation is pulled out from the second drawer opening 34, the color developer 1 of the color developer sheet 12 is
A double-sided adhesive tape 32 is attached to the eight sides, and in this state, the color developer sheet 12 is discharged through the second drawer opening 34 and the paper discharge port 37 of the case 1.

As shown in FIG. 2, an operation panel 52 for instructing the image forming apparatus to start printing, etc. is arranged at the top of the case 1. The operation panel 52 includes a start button 53 for instructing the start of printing, and A direct button 54 for setting the focus when the document 40 is not in a case or the like, and a case button 55 for setting the focus when the document is in the case are arranged. Information about which button has been pressed is communicated to controller 50, which adjusts the focus to a predetermined position by driving motor 51.

Next, the operation of the image forming apparatus configured as described above will be explained.

Now, when using this image forming apparatus to form an image based on a subject, the mode setting buttons 54 and 55 provided on the operation panel 52 can be used to determine whether the original 40 is placed directly or in the case. Choose which one is included. The controller 50 rotates the motor 51 based on the information, and adjusts the exposure imaging lens 23 by rotating the adjustment cylinder 24 to move the imaging lens 23 in the optical axis direction.

This operation will be explained with reference to FIG. 3. When direct is selected, by moving the lens 23 to the position A, an optical system is created so that the document 40 is brought into focus at the position C. When the case is selected, an optical system is formed in which the original 40 is brought into focus at the position D by moving the lens 23 to the position B. Next, the device is placed over the image to be copied, and the desired image area is determined by looking through the viewing opening 45 and into the image capture opening 46. When the desired image is determined, exposure is started by pressing the start button 53. The light-sensitive pressure-sensitive sheet 11 is exposed via the base sheet 15 by the light reaching the image-forming sheet 10 on the exposure area 21 from the subject through the imaging lens 23, and the light-sensitive pressure-sensitive sheet 11 is exposed to light that corresponds to the subject on the light-sensitive pressure-sensitive sheet 11. A latent image is formed.

When the exposure is completed, the light source 48 is turned off, and the drive motor and heat fixing device 29 are turned on. Then, the drive motor is started, and movement of the image forming sheet 10 and the double-sided adhesive tape 32 is started.

After that, the pressure roller 2 of the pressure developing device 25
6 between the exposed part of the photosensitive pressure sensitive sheet 11 and the color developing sheet 12
are pressed against each other, the latent image on the photosensitive pressure sensitive sheet 11 is transferred and developed on the color developer sheet 12, and the photosensitive pressure sensitive sheet 11 after use is transferred and developed.
is wound up on a winding shaft 28, and the image on the color developer sheet 12 is heat-fixed by a heat fixing device 29.

[0024] Furthermore, before the color developer sheet 12 after image formation is pulled out from the second drawer opening 34,
A double-sided adhesive tape 32 is pasted on the color developer 18 side of the color developer sheet 12 between the guide roller 35 and the protrusion 36, and in this state, the color developer sheet 12 is inserted into the second drawer opening 34 and the case 1. The paper is discharged through the paper discharge port 37. Therefore,
The output image formed on this color developing sheet 12 can be used for stickers and the like. Thereafter, the drive motor is stopped and the heat fixing device 29 is turned off.

Note that the present invention is not limited to the configuration of the embodiment described above; for example, the mode setting is not limited to two types, but may be any number of types, and the configuration of each part may be changed without departing from the spirit of the present invention. It is also possible to change and embody it as desired.

[0026]

As is clear from the above description, the image forming apparatus of the present invention has the advantage that it is possible to obtain output images without blurring for originals having various focal lengths.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an image forming apparatus embodying the present invention during exposure.

FIG. 2 is a schematic diagram of an operation panel section. .

FIG. 3 is a schematic diagram of the optical system.

FIG. 4 is a schematic cross-sectional view of a conventional image forming apparatus.

[Explanation of symbols]

50 Controller 51 Motor 52 Operation panel 53 Start switch 54 Direct switch 55 Case switch

Claims (1)

[Claims] 1. An image forming apparatus for exposing a document to obtain a duplicate image, comprising: input means for setting the type of document; and adjustment means for adjusting the focus of a lens according to data of the input means. An image forming apparatus characterized by: