JPS5919937A - Copying machine - Google Patents

Abstract

PURPOSE:To facilitate the composition of drawings, by providing an optical system which guides scanning light from a scanning part selected among plural scanning parts on the basis of a copy composition signal to a single photoreceptor. CONSTITUTION:This copying machine is equipped with a platen 2 on which a master original 1 is placed, light source 3 for it, composition original drum 5 mounting an original 4 for compsition around its outer circumferential surface, mirror 6 for reflecting and outputting the screen contents of the master original 1 to specific width during illumination, slanting mirror 7 which reflects the picture from the mirror 6 and allows the picture of an original 4 for composition to pass, mirror lens 8 for forming an image of the picture on a photosensitive surface, and mirror 9 for guiding the picture from the mirror lens 8 to the photosensitive surface. Further, a light source 11 exposes the photosensitive drum 10 to beltlike pictures from the mirror lens 8 successively, fixes the pictures, and irradiate the composition original drum 5 with light, and a timing encoder 12 which outputs a basic signal for equalizing the peripheral speed of the photosensitive drum 10 to that of the composition original drum 5 is provided to the photosensitive drum 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus that composes a single copy from a plurality of original documents.

For example, some copying devices combine two originals into one copy, and a film image of the composite part of the originals to be combined is projected onto a photosensitive drum that receives the light image of the main original. (when projecting the composite part, mask the corresponding part of the main document), or directly apply a potential corresponding to the image of the composite part of the original to be composited to the photosensitive drum. I try to give it to

According to this copying apparatus, a composite image can be formed on the photosensitive drum by projecting an image on the film or applying an electric potential as described above. For example, it is possible to easily synthesize drawings or synthesize copies of original destinations without taking the troublesome measures of masking or attaching a display to a part of the platen.

However, with this copying device, it is necessary to prepare a film for composite copying or to provide a special mechanism for applying electric potential to the photosensitive drum, which tends to increase the cost. There is a risk that it will be lacking.

The present invention has been made in view of the above, and in order to suppress cost increases and decreases in versatility by utilizing a generally employed copying mechanism as is, a plurality of scanning units are provided,
The present invention provides a copying apparatus that selects a scanning light corresponding to a composite copy from a plurality of scanning lights and forms a composite copy optical image on a single photoreceptor.

Hereinafter, a copying apparatus according to the present invention will be explained in detail.

FIG. 1 shows an embodiment of the present invention, which includes a platen 2 on which a first original (master original) 1 is placed, a light source 3 that irradiates the master original with light during scanning through the platen 2, and a first original (master original) 1. 2 originals (originals for synthesis) 4 are mounted on the outer peripheral surface of a composite original drum 5; a mirror 6 that reflects and outputs a predetermined width of the screen content of the master original 1 when illuminated; , or a foldable mirror 7 that allows the screen of the composite document 4 to pass through directly, and an image reflected by the foldable mirror 7 or an image of the composite document 4 obtained when the mirror 7 is tilted, onto a photosensitive surface. A mirror lens 8 is used to form an image, and an image from the mirror lens 8 is guided to a photosensitive surface.
A photosensitive drum 10 on which ff-shaped images are sequentially exposed and subsequently subjected to development transfer and fixing;
A light source 11 that irradiates light onto the X draft drum 5 and a photosensitive drum 1
The timing encoder 12 is provided on the photosensitive drum 10 to output a basic signal for making the circumferential speed of the composite document drum 5 coincide with the circumferential speed of zero.

Foldable mirror 71; 1m2 As shown in the diagram, the mirror base 1
One side is rotatably hinged to 3, and the shaft 16 is rotated II.
Stand inverted as XIJ axis. An end of the shaft 16 is connected to a rotating shaft of a rotary solenoid 17. Under normal conditions, the folding mirror 7 is pulled by the spring 15 to the position where the stopper 114 is locked, so it is in an upright state. Also, when the rotary solenoid 17 is activated, the force resisting the spring 15 is applied to the rotary solenoid 1.
7, the foldable mirror 7 is pushed down.

Furthermore, the detailed structure of the composite document drum 5 is shown in FIG.
The drum 5 is pivotally supported by the drum 9b and is controlled by a pulse motor 18 to rotate at the same peripheral speed as the photosensitive drum 10. Note that when mounting the composite document 4 on the composite document drum 5, adhesive tape or the like is used.

Further, when controlling the rotary solenoid 17 of the folding mirror 7 and the pulse motor 18 of the composite document drum 10, for example, a control device shown in FIG. 4 is used.

In FIG. 4, the control device includes a timing encoder 1
Based on the timing signal output from 2, the microcomputer 2
4 inputs the drum signal outputted by the pulse motor 18, and after a set delay time T, excitation of the pulse motor 18 is started, and the pulse motor 18 is excited for a certain period of time (
The start delay timer 20 energizes (scan width time), the pulse motor drive circuit 21 drives the pulse motor 18 based on the signal output from the timer 20, and when the start delay timer 20 is started, the number of lines of the document is The count is performed up to the specified line feed amount set value St, and the line designation signal Sc of the line to be subjected to the specified composite copy is
When the row count value reaches
The rotary solenoid drive circuit 23 consists of a counter section 22 that outputs a signal to excite the rotary solenoid 17, and a rotary solenoid drive circuit 23 that excites the rotary solenoid 17 at a specified row position based on the signal output from the counter section 22. , the microcomputer 24 includes a ROM for programs, a CPU for arithmetic processing,
and a RAM for temporarily storing processing results, and performs various controls of the copying machine in addition to this control).

In the above configuration, the operation will be explained according to the time chart shown in FIG. 5. First, the master document 1 is set at a prescribed position on the platen 2, and the composite document 4 is set on the composite document drum 5. Also, what line of the master manuscript (
The command to make a composite copy (the number of lines may be all the lines of the master document) and the total number of lines of the document are set from the console of the copying machine or the like. For example, when making a composite copy on three sheets of copy paper as shown in Figure 6, the first line of the composite original is composited for the first sheet, and the second line is composited for the second sheet. , and for the third sheet, the third row will be composited, so each row will be specified.

When a copy start button (not shown) is pressed, the photosensitive drum 10 starts rotating under the control of the microcomputer 24, and the microcomputer 24 outputs a drum signal based on an encoder signal output from the sensor 12 when passing a predetermined position. is output, and upon receiving this signal, the start delay timer 20 drives the pulse motor 18 after a set time Tl.

The pulse motor 18 rotates the drum 5t at a speed synchronized with the optical drum 10, and at the same time, the platen 2 starts moving in synchronization with the composite document drum 10 (note that even if the platen is fixed and the optical system moves, good). In this case, the light sources 3 and 11 are turned on at the start of copying, but this control and the control of the photosensitive drum 10 are performed by a control device in the main body of the copying machine constituted by a microcomputer 24. The output signal of the star 1 and d delay timer 2o is further output to the counter is'
, I22 to start counting the line feed.

When performing composite copying as shown in FIG. 6, since the first line of the first sheet is designated as composite copying, the rotary solenoid 17 is energized at the first count of row y8υ, and the collapsible mirror 7 is tilted. The contents of the first line of the composite original 4 are then exposed to the photosensitive drum 10 via the mirror lens 8 and the mirror 9. Before scanning moves to the second line of the master document 4, the power to the rotary solenoid 17 is cut off, and the folding mirror 7 returns to its original position, returning to the normal scanning system and scanning the 102nd line and subsequent lines of the master document. Contents are copied.

For the second copy, as shown in FIG. 7, in order to copy the second line of the composite original 4 to the 101st line of the master original, start scanning the master original 1 at T2 (of the composite original 4). (equivalent to the second line) and starts scanning. As a result, the contents of the second line of the composite original 4 are compositely copied to the first line of the master original 1.

In this case, instead of delaying the start of scanning of the master document by Tz from the composite document drum 5, the position where the master document 1 is placed on the platen 2 is shifted by one line in the scanning direction relative to the first copy. It may also be placed on the table.

This simplifies the configuration of the control system.

Furthermore, for the third copy, by delaying the start of scanning of the master document 1 with respect to the composite document drum 5 by two lines, a desired composite document υ can be obtained. In this case as well, by placing the master original 1 on the platen 2 with a shift of two lines and copying, the third line of the composition original 4 is compositely copied onto the first line of the master original 1.

In the above example, only one line of the composite original 4 is compositely copied, but the number of lines to be copied can be composited without any restrictions, and all lines of the composite original 4 can be copied. It is possible.

Moreover, although the mirror 7 has shown an example in which the entire mirror can be folded down, a structure may be adopted in which only a part of the mirror is folded down. In this case, masking of the master document 1 was performed in units of rows or columns, but by selecting the tilting position of the mirror, masking can be performed in any position. - In place of the foldable mirror 7, a half mirror may be used and the document may be selectively scanned by the microcomputer 24.

Furthermore, the drum 5 does not need to be completely synchronized with the drum 10, and a special effect can be produced by rotating the drum 5 at increased or decreased speed and distorting the image of the combined document.

Further, the drum 5 can be used for general long sheet originals, and a mechanism for variable magnification for compositing originals may be provided.

According to the above-described energization and copying apparatus of the present invention, a plurality of scans 1-1- is provided, a scanning light corresponding to a composite copy is selected from a plurality of scanning lights, and a composite copy is made onto a single photoreceptor. Since the optical image is formed, an increase in cost can be suppressed and a decrease in versatility can be prevented.

[Brief explanation of drawings]

FIG. 1 is a scanning system diagram showing an embodiment of the present invention. FIG. 2 is a perspective view of the foldable mirror 7 according to the present invention. FIG. 3 is a perspective view of a composite document drum according to the present invention. FIG. 4 is a block diagram showing a control system of an embodiment of the present invention. FIG. 5 is a time chart for the first copy according to the embodiment of the present invention. FIG. 6 is an explanatory diagram showing an example of a copy obtained by applying the present invention. FIG. 7 is a time chart for the second copy of the non-inventive embodiment. 2...Platen, 3.11...Light source, 5...Composition original drum, 6,9...Mirror, 7...
Foldable mirror, 8...Mirror lens, 10...
・Photosensitive drum, 12...Drum timing sensor, 13...Mirror base, 17...Rotary solenoid, 18...Pulse motor. Fig. 2 Fig. 3 1R Fig. 4 j or C a\n425 stone Fig. 5 Pulse L-918 Fig. 6

Claims (1)

[Claims] A copying apparatus that copies a single composite copy from a plurality of originals, comprising: a plurality of scanning units that scan a plurality of originals; and, when a copy composition command is issued, copies corresponding to the composite copy. A copying apparatus comprising means for outputting a composite signal, and an optical system for guiding scanning light from a scanning section selected from the plurality of scanning sections to a single photoreceptor based on the copying composite signal.