JPS59154433A - Exposing device - Google Patents

Abstract

PURPOSE:To prevent lowering of contrast and superposition of recorded pictures and obtain a proper recorded picture at all times by illuminating only one side at the time of one side exposure. CONSTITUTION:An original P is supplied between glass plates 3, 3'. At the time of both sides exposure mode, the surface and the back of the original are illuminated simultaneously by light sources 5, 5' and the image is exposed on a film F by a lens 13 through reflection mirrors 10, 10' and slits 11, 11' and via a mirror 12. When an original P is supplied by paper feeding rollers 1, 1' and the tip is detected by a photoelectric element 4, the film F starts moving in longitudinal direction, and a shutter 16 opens. When the original moves between glass plates 3, 3', the film F moves synchronizing with the original and the image of the original is exposed on the film F. When the rear end gets out of the photodetector, a timer starts operation, and the film F is stopped and the shutter 16 is closed when the rear end of the original P gets out of glass plates 3, 3'. Thus, photographing is completed. When only one side of the original is to be exposed, the mode is changed to a one side exposure mode. Only light source 5 is lit up, and a shading plate 15 cuts off the light path for the back, and only the image on the surface of the original is exposed on the film.

Description

[Detailed description of the invention] Wooden 11 light (selective (selective)
This recording 1rti +: :,,, - light camera, double'
! Concerning exposure equipment for J' machine.

Me 1, state 1! 'ICfr: ;+ The exposure device of the multifunctional recording device that can record both sides of the original is used for the front surface of the document. 4 (Meikou 11!; iDohara IC; 5 The illumination light sources for the back side are arranged in phase with each other on both sides of the document, and both sides are exposed when exposing - on both sides and on one side, regardless of light 1+!7. The light source was turned on to illuminate both sides of the document.For this reason, when exposing one side of the document, if 45 is good, the transmitted light from the document will be projected onto the photoreceptor. When there is an image in the contrast of the recorded image, there is an inconvenience that the images on both the front side and the back side are recorded overlapping each other.

The present invention aims to solve the -1-ligand convenience, and
With surface exposure, we provide an exposure device that illuminates only the yl-plane, thereby preventing a decrease in contrast and overlapping of recorded images, and ensuring that appropriate recorded images are always produced regardless of the type of document. be able to.

The present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram of the original fρJ conveying section and illumination section of a rotary camera to which the present invention is applied, and FIG. 2 is a schematic diagram of the optical section of a bipedal camera.

In FIG. 1, an original P is fed into the camera by paper feed rollers 1, ]' and then detected by a light receiving element 4, and exposure of the original fA is started. The original P that entered the illumination section is
υ] Illuminated by the front side illumination light source 5 and the back side illumination light source 5', the document image is reflected by the reflection mirrors]0, lO', which are respectively arranged at an angle of 45 degrees with respect to the document, and then is reflected by the slit 11. 11', is reflected by the mirror 12, and is imaged onto the film F by the imaging lenses 1' and 3. Hara 1 after exposure? :, P is 1/1 output roller 2
, 2' are discharged outside the camera. Reference numerals 3 and 3' denote transparent glass plates for guiding the document, which are placed at the illumination position of the document.

Reference numeral 15 denotes a light shielding plate that moves into the optical path when one side is exposed to block the optical path for the back side. 16 is a shutter.

In FIG. 2, when an original P is fed between the glass plates 3.3', the front and back sides of the original are simultaneously illuminated by the light sources 5 and 5' in the double-sided exposure mode, and the image thereof is reflected by the reflecting mirror 10 and 10', slints 11 and 11', mirror 12, and lens 13 to expose films 1 and F. In FIGS. 1 and 2, the document P is fed by the feeder 4 (rollers 1, 1'), and when its leading edge is detected by the light receiving element f4, the film F starts to move in the longitudinal direction, and the shunter 16 opens.The original P is placed on the glass plates 3 and 3'.
When the film F moves in synchronization with the original, the original image is exposed on the film F. History of manuscript P or movement 1
．． When the trailing edge of the document P comes off the light receiving element, a timer (not shown) is activated and the film F stops when the trailing edge of the original P comes off the glass J3, 3' and the shutter 16 is closed and the photo is taken. is completed. At this time, the moving speed of the original fKGP and the moving speed of the film F are added in advance based on the optical path length and the reduction ratio determined by the lens.

In FIGS. 1 and 2, when only the J1 side (front side) of the document is to be exposed, the mode is switched to single-sided exposure mode, whereby only the light source 5 is lit, and the light shielding plate 5 blocks the optical path for the back side.
Only the image of the surface of the field 1ρ is exposed to film. In addition, when exposing only 11 sides of the original, the film F is set 17 in a position different from that shown in FIG. It is also possible to perform exposure at a magnitude of γ1 rather than the case.

In FIG. 3, the control circuit 42111 of the illumination light source is shown in a smaller scale. In the figure, 30 is a power source, 31 is a brightness control circuit, 32 is an exposure mode changeover switch, and 33 and 34 are mode lamps. 1! (The illumination light beam 5 for the surface of the manuscript is connected in series to j1.
A light source 5 for illuminating the back side of the original, consisting of a plurality of lamps
' is a serial number, which consists of a plurality of connected numbers, and when the original is sent to the illumination section, it is turned on by the feed i degree control circuit 3) -'') in the direction of jl! .

17 Kiko Sen-dori J exchange switch 32 is a manual switch, and when connected to a, it is set to double-sided exposure mode, and thereby the illumination light source 5' is connected to 'iji i%43 G, and the lamp 33 is turned on. Displays double-sided exposure mode.

−・force, when switch 32 is connected to b, one piece [nl)♂5
1, the illumination light coffin 5' is disconnected from the 'tun MR: < 30, and the lamp 34 is turned on L5.
to display the moonlight mode. Also, the operation 1 of the switch 32
'1, the light shielding plate 15 moves, jCl, the front plate 15
is located outside the optical path when switch 32 is connected to a, and 1
) is located in the optical path when connected to Is it double-sided by Sui・;chi32? When Hikone mode is selected, the internal light school 'A 5+5' lights up, and when single-sided exposure mode is selected, only one light source 5 lights up.

According to the present invention, as shown in l-q below, the original 1'
:;Isn't the image of the i side superimposed on the i of J? =,
It can record high-contrast images, extend the life of the source, and save power.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the main parts of a rotary camera showing one embodiment of the present invention, Fig. 2 is a block diagram of the optical part of the camera shown in Fig. 1, and Fig. 3 is a diagram showing the control circuit for CI and light source 11. It is. 5, 5'. ,, illumination light source 10 ,to',12. ,,
, Miller P. ,,,manuscript

Claims (1)

[Claims] +1;1. Ji:, In a device that exposes one side of i to the recording surface in a coordinated manner, when e-lighting both sides, both sides of the document are illuminated at the same 11 + 5.I-1 When exposing one side, the document 1. "9. Optical device characterized by providing one stage for illuminating only 'i o'Ii.