JPH0442670B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer type copying apparatus capable of forming a margin on a transfer material.

Providing a margin at the edge of the transfer material to form a binding margin is very convenient for organizing documents, since holes for filing can be made there. A copying apparatus is known in which a binding margin is formed at the edge of the transfer material by shifting the position of the copy image on the transfer material. (Unexamined Japanese Patent Publication No. 53-110830, No. 55-
(Nos. 151658, 151659, 151660, 151661) However, when the original to be copied has characters and figures all the way from one end to the other, the position of the copy image must be adjusted on the transfer material in order to provide a margin on the transfer material. If it is shifted sideways, part of the original image will protrude outside the transfer material, resulting in some characters and some figures at the edges of the original not being copied.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a copying apparatus in which a margin can be provided on a transfer material in which a document image does not protrude from the transfer material. The present invention achieves the above-mentioned object, and provides a transfer-type copying device capable of forming a margin at the leading edge of a transfer material in a conveyance direction, and a margin width setting that variably sets the margin width of the margin at the leading edge of the transfer material. a conveyance means for conveying the transfer material to the transfer section; and a copying magnification changing means, and the conveyance means conveys the transfer material to the transfer section according to the margin width set by the margin width setting means. This invention is characterized in that the start time and the copying magnification by the copying magnification changing means are controlled.

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

FIG. 1 is a perspective view of a portion of the external appearance of a copying apparatus to which the present invention is applied. In FIG. 1, various control keys are arranged on an operation panel 63 of a copying machine exterior box 62 that houses various means and members described later. The key 64 is a copy key, and when this key 64 is pressed, the drum rotates as described later, the original placed on the original platen 1 is scanned, and a copy of the original is created by the electrophotographic process described later. is obtained.
The key 65 is a double-sided copy command key;
By pressing 5, copy images can be formed on both sides of the transfer paper as described later.

Keys 66, 67, 68 and numerical key group 69 are keys for controlling motors 28, 56, which will be described later.
Further, the keys 66 and 67 and the key group 69 also control the motor 33, which will be described later, and the key 68 and the key group 69 also control the timer 60, which will be described later.

Specifically, when the key 66 is pressed, a binding margin is formed on the right side edge of the transfer paper, when the key 67 is pressed, the left side edge is formed, and when the key 68 is pressed, a binding margin is formed on the leading edge. Then, the key group 69 is used to set the width of the binding margin to the width desired by the operator. That is, the key 66 rotates the motor 33 in the normal direction, thereby moving the lens 4, which will be described later, in the left direction as shown in FIG. 6A. The key 67 also reverses the motor 33, thereby moving the lens 4 in the right direction as shown in FIG. 6B. The amount of rotation of the motor 33, and therefore the amount of movement of the lens in the lateral direction, is controlled by a group of keys 69. That is, the lens 4 moves in the lateral direction by a distance corresponding to one or more numerical keys selected by the operator from the key group 69. The operator only has to press one or more keys corresponding to the desired binding margin width.

Furthermore, whether the key 66 or the key 67 is pressed, motors 28 and 56, which will be described later, are rotated and the copy magnification is changed. When the motor 28 rotates, the lens 4 moves in the magnification direction, and when the motor 56 rotates, the mirror 3, which will be described later, changes its forward movement starting position.
Moving. The amount of rotation of the motors 28 and 56, the amount of movement of the lens 4 in the magnification direction, and the amount of movement of the mirror 3 are controlled by a group of keys 69. That is, the lens 4 is set to the above-mentioned 1 selected by the operator.
The mirror 3 moves in the magnification direction by a distance corresponding to the one or more numerical keys, and the mirror 3 also moves by a distance corresponding to the one or more numerical keys.

Even when the key 68 is pressed, the motors 28 and 56 rotate, moving the lens 4 in the magnification direction and moving the mirror 3. Lens 4 and mirror 3 at this time
The amount of movement is also controlled by the key group 69 in the same manner as described above. Also, if key 68 is pressed, key group 6
Reference numeral 9 controls a timer 60 that controls driving of a pair of registration rollers 14, which will be described later. That is, the timer 60
The set time is changed in response to one or more numerical keys selected by the operator. In this way, by pressing the key 68 to select forming a margin at the leading edge of the transfer material, and pressing the keys 69 to set the width of this margin, the positions of the lens 4 and mirror 3, and the mirror The copying magnification is controlled by changing the scanning speeds 2 and 3 (described later), and furthermore, the drive of the pair of registration rollers 14 by the timer 60 is controlled to control the timing at which the transfer material starts to be conveyed to the transfer section.

Note that the desired binding margin width set using the key group 69 is displayed on the display 70. For example, if you press the numeric key "5", the display 70 will show "05".
is displayed, and a binding margin width of 5 mm is obtained on the transfer paper. If you press the numerical keys "2" and "5" in sequence, "25" is displayed on the display 70, and a binding margin width of 25 mm is obtained on the transfer paper. Width is obtained.

Further, in FIG. 1, S indicates the document scanning direction, and mirrors 2 and 3, which will be described later, move forward in the direction of arrow S. The document O is placed on the table 1 with one side end O' aligned with one end 1' of the document table 1, and the leading edge O' aligned with an edge 1'' perpendicular to the edge 1'.

FIG. 2 is for explaining the arrangement of each means in one embodiment of the present invention. In Figure 2,
A document O to be copied is placed on a transparent document table 1. This document is illuminated by a lamp (not shown) and scanned by movable mirrors 2 and 3. That is, the mirror 2 moves forward to the left from the forward movement start position 2 in the figure, and the mirror 3 moves leftward from the forward movement start position 3 in the figure at a speed ratio of 1:1/2, and during this forward movement, the original Scan O. After scanning the original, the mirrors 2 and 3 move to their respective forward movement end points 2-
When the mirrors 2, 3-2 are reached, the mirrors 2, 3 move back to the right and return to their respective forward movement starting positions. During the document scanning, the light from the document O is sequentially reflected by the mirrors 2 and 3 and is incident on a lens having a mirror inside, that is, an in-mirror lens 4. The imaging light flux emitted from the lens 4 is reflected by a fixed mirror 5 and enters an electrophotographic photosensitive drum 6 rotating in the direction of the arrow at an exposure station E. That is, the drum 6 is slit-exposed with an optical image of the document. Before this slit exposure, the drum 6 is uniformly charged by a charger 7 in a charging station C. Therefore, an electrostatic latent image of the document is formed on the drum 6 by the slit exposure of the optical image. This latent image is developed in a developing station D by a developing device 8. The visible toner image obtained on the drum 6 by this developing process is transferred to the transfer paper P in the transfer station T under the action of the transfer charger 9. After transfer, drum 6 is in the cleaning department
In the CL, the surface is cleaned by the cleaner 10,
It is used again in the image forming process.

The transfer paper P is sent out from the transfer material loading deck 11 by a delivery roller 12, guided by a guide plate 13, and reaches a pair of registration rollers 14. When the leading edge of the transfer paper P reaches the roller pair 14, the roller 14 has stopped rotating. Therefore, the leading edge of the transfer paper P stops moving forward once it hits the roller pair 14. Thereafter, the roller pair 14 starts rotating, and the transfer paper P resumes advancing. Then, the roller pair 14 conveys the transfer paper P to the transfer station T at the same speed as the circumferential speed of the drum 6. Note that the time point at which the roller pair 14 starts rotating is variable. As a result, the time when the leading edge O of the original O is scanned by the mirror 2 (the time when the mirror 2 reaches the position 2' where the leading edge O of the original O can be seen) and the leading edge of the transfer paper P are determined. P
The time between reaching the transfer station is variable. Furthermore, at the time when the leading edge O of the document is scanned,
A latent image of the leading edge O of the document is formed on the drum 6.

After the transfer, the transfer paper P is transferred to the fixing device 1 by the belt 15.
6. The fixing device 16 fixes the toner image onto the transfer paper P. After fixing, the transfer paper P is discharged onto the tray 17. However, if you want to obtain copies on both sides of the transfer paper, press the double-sided copy instruction key 65 to
After fixing the surface, the transfer paper is guided to the intermediate tray 18,
Then, in response to the copying operation of the second side, the transfer paper is re-fed so that the back side of the transfer paper comes into contact with the photosensitive drum, and a double-sided copy is obtained through the same process as described above.

Now, with the apparatus of the present invention, a binding margin margin of any width can be formed at the side edge or leading edge of the transfer paper. In order to completely form the image of the original in the transfer paper area excluding the set binding margin, the apparatus of the present invention adjusts the magnification of the copy image relative to the original in accordance with the set binding margin width. The magnification is changed.

In order to change the copy magnification in accordance with the set binding margin width, the lens 4 in the embodiment shown in FIG. 2 is movable in the magnification direction. (In this specification, the magnification direction refers to the direction in which the magnification of the original image formed on the drum 6 can be changed by moving the lens in that direction. In other words, in the magnification direction By moving the lens, you can
The optical path length between the lenses and between the lens and the drum can be changed. ) Furthermore, in order to form a binding margin at the side edge of the transfer paper, in the apparatus shown in FIG. ) is also movable.

FIG. 3 shows a mechanism for moving the lens 4. In the figure, a first movable table 21 is slidably supported by a pair of guide rails 19 and 20 arranged along the magnification direction. A guide rail 22 provided on one side of the upper surface of the first movable table 21 in a direction perpendicular to the drum rotation direction, and a convex edge 23 provided on the other side in the same direction, fixedly support the imaging lens 4. 2 movable table 24 is slidably supported. A rack 25 is fixed to the side edge of the second moving table 24 in parallel with the rail 22, and a roller 27 attached to the rack 25 by a shaft 26 is slidable on the upper surface of the convex edge 23 of the first moving table 21. It has been posted.

A servo motor 28 is attached to the upper surface of the first moving table 21, and a gear 30 fixed to its output shaft 29 is exposed downward from an opening 31 formed in the first moving table 21 and is parallel to the guide rails 19, 20. It is engaged with a rack 32 fixed to the main body of the device.

Moreover, a servo motor 33 is further mounted on the top surface of the first moving table.
is attached, and a gear 35 fixed to its output shaft 34 is engaged with the rack 25 of the second moving table 24.

In the above, by operating the motor 28, the first moving table 21 is guided by the guide rails 19, 20 and moves in the magnification direction. That is, lens 4
is displaced in the magnification direction to change the optical path length between the document and the lens, and the optical path length between the lens and the drum.

Further, by operating the motor 33, the second moving table 24 is guided by the guide lens 22 and the convex edge 23 of the table 21, and moves on the table 21 in a direction perpendicular to the drum rotation direction. That is, the lens 4 is displaced in a direction perpendicular to the drum rotation direction. This lens displacement does not change the optical path length between the original and the lens, nor the optical path length between the lens and the drum, but it does displace the position of the original image formed on the drum in the direction perpendicular to the drum rotation direction. .

Incidentally, the motors 28 and 33 may be operated simultaneously, or the motor 33 may be operated after the operation of the motor 28 is completed.
Alternatively, the motor 28 may be operated after the motor 33 has finished operating.

Now, if the lens 4 is a fixed focus lens, to change the magnification of the image, you must not only displace the lens 4 in the magnification direction, but also change the relative positional relationship between the mirrors 2 and 3 between the document and the lens. Either change the optical path length to compensate for the change due to lens displacement and bring it to a length corresponding to the magnification to be set, or change the position of the mirror 5 to change the optical path length between the lens and the drum depending on the lens displacement. It is desirable that the length be changed to compensate for the change due to the change in the magnification, so that the length corresponds to the magnification to be set. In FIG. 2, the relative positional relationship between the first and second scanning mirrors 2 and 3 is changed by changing the forward movement starting point position of the second scanning mirror 3. Therefore, the drive mechanism for the mirrors 2 and 3 will be explained with reference to FIG.

In FIG. 4, first and second mirror support stands 36 and 37 supporting mirrors 2 and 3, respectively, are slidably supported by guide rails 38 and 39 arranged parallel to document table 1. As shown in FIG. A wire 40 whose one end is fixed to the second mirror support stand 37 is connected to a pulley 41 whose position is fixed to the apparatus main body, a drive pulley 42 whose position is fixed to the apparatus main body, a pulley 43 whose position is fixed to the apparatus main body, a pulley 44 whose position is adjustable, and a pulley 44 whose position is fixed to the apparatus main body. Pulley 4 whose position is fixed on the main body
5. Pulley 4 provided on the second mirror support stand 37
6. The wires 40 are suspended in order from a pulley 47 rotatably supported on the same shaft 48 as the pulley 44, and the other end of the wire 40 is fixed to a part 49 of the main body of the device. between the pulleys 45 and 46.
The mirror support stand 36 and the wire 40 are fixedly connected by a member 50.

In the above configuration, when the drive pulley 42 rotates counterclockwise, the pulley 46 functions like a movable pulley, and the first mirror support stand 36 and the second mirror support stand 37 move back and forth at a speed of 1:1/2. move. When scanning of the document is completed by this forward movement, the pulley 42 rotates clockwise, thereby causing the mirrors 2 and 3 to move back to their respective forward movement starting positions. Note that the rotation speed of the pulley 42 in the counterclockwise direction is variable in accordance with the set copying magnification. That is, the forward movement speed of mirror 2 (original scanning speed) is given by v/m, and the forward movement speed of mirror 3 is given by v/2m. Here, v is the circumferential speed of the drum 6, and m is the set copying magnification.

By changing the positions of the pulleys 44 and 47 in the apparatus shown in FIG. 4, the forward movement starting point position of the second mirror 3 can be changed. Therefore, the displacement mechanism of the pulleys 44, 47 will be explained with reference to FIG. Pulley 4
One end of the shaft 48 of 4, 47 is connected to the elongated hole 5 of the guide plate 51.
2, and the other end is fixed to a pulley support member 53. The support member 53 is slidably supported by a guide rail 54.
A rack 55 is fixed to the support member 53 in parallel with the guide rail 54, and a gear 58 fixed to an output shaft 57 of a servo motor 56 is engaged with the rack 55.

In the above configuration, when the motor 56 is operated, the pulleys 44 and 47 are displaced, thereby causing the second
For example, if the forward movement starting point position of the mirror 3 is 3-- in FIG.
Changed to 3. In this state, drive pulley 4
2, the first mirror reciprocates between the position 2 in Figure 2 and the position 2-2, and the second mirror synchronizes with the first mirror to move to the position 3-3 in Figure 2. and 3
-Move back and forth between the 4 positions. In any case, the original O is scanned when the mirrors 2 and 3 move forward, and its image is projected onto the drum 6.

In the above, assuming that the operating mode of the device is the normal mode (an operating mode in which there is no command to form a binding margin at the edge of the transfer paper and a copy image is formed at the same size as the original), The lens 4 is located at the solid line position 4 in FIG. 2, and the forward movement starting point position of the second mirror 3 is at the position 3 in FIG. At this time, the optical path length between the document and the lens and the optical path length between the lens and the drum are each 2·f. (f is the focal length of the lens 4) On the other hand, when the operation mode of the device is set to the binding margin forming mode, the key 66 or 67 or 6 in FIG.
8, and desired keys (one or two) in the key group 69 are pressed. Thus key 66, or 6
7, or 68, and key group 69 are the motor 2
8, and 56, thereby controlling the lenses 4,
Controls the movement of the second mirror 3. That is, key 6
6, or 67, or 68, and key group 69, the optical path length between the document and the lens is 2W-l/W-l・f, and the optical path length between the lens and the drum is 2W-l/W・f. The forward movement starting point positions of the lens 4 and mirror 3 are moved to the positions where the lens 4 and the mirror 3 are moved. In other words, lens 4 is at position 4-2,
The forward movement starting point position of the second mirror 3 is changed to 3-3. At this time, the magnification of the original image is W-l/W, that is, the value obtained by dividing the difference between the width of the transfer material and the width of the binding margin by the width of the original. For convenience of explanation, a case will be described in which the width of the original and the width of the transfer material are both W, but the present invention can also be applied to a case where the width of the original and the width of the transfer material are different. Furthermore, the above l is the width of the binding margin set by the key group 69.

Note that the binding margin forming mode consists of two types of modes. In the first mode, on the side edge of the transfer paper, in the second mode, on the leading edge of the transfer paper.
A binding margin is formed for each. That is, the first binding margin forming mode is designated by pressing the key 66 or the key 67, and the second binding margin forming mode is designated by pressing the key 68.

In the embodiment, when the second binding margin forming mode is specified, the lens 4 moves only in the magnification direction. That is, the motor 28 in FIG. 4 operates, but the motor 33 does not operate. However, the first
When the binding margin forming mode is specified, the lens 4 is displaced both in the magnification direction and in the direction perpendicular to the rotational direction of the drum 6. In other words, both motors 28 and 33 in FIG. 4 operate. Therefore, motor 3
The amount of rotation of lens 3 is controlled by the key group 69 as described above, and the amount of displacement of lens 4 in the direction perpendicular to the drum rotation direction due to the operation of this motor 33 is
It is given by Wl/2 (2W-l). Then, the key 66 causes the motor 33 to rotate in the normal direction, thereby displacing the lens 4 to the left as shown in FIG. 6A. Therefore, the binding margin _F1 is formed on the right side of the transfer paper P. On the other hand, the key 67 reverses the motor 33, thereby displacing the lens 4 to the right as seen in FIG. 6B. Therefore, the binding margin _F2 is formed on the left side edge of the transfer paper. FIG. 6C shows a case where no binding margin is formed.

Now, in FIGS. 6A, B, and C, the transfer paper P comes into contact with the area A ₁ (width W) of the drum 6 in the transfer station. In the case of the normal mode, as shown in _FIG.
is formed. In this case, the right side edge of document O
The image of O' is projected on the left end A ₁ ' of the area A ₁ , and the image of the left side edge O'' of the original O is projected on the right end A ₁ '' of the area A ₁ . Thus, an original image is formed on the transfer paper P from the right end P' to the left end P''.

In FIG. 6A, the image at the right edge O' of the original O is projected onto the left edge A ₁ ' of area A;
O'' is projected onto point A ₂ ′ in area A. In other words, the original image (reduced image) is formed in area A ₂ from point A ₁ ′ to point A ₂ ′, and from point A ₂ ′ to point A ₁ ″ No document image is formed in the area _A3 up to the point. On the other hand, the transfer paper P contacts the entire width of the _A1 area. Therefore, area A ₂ of transfer paper P
An image W-l/W times the size of the original O is formed in the area _I1 in contact with the original O. Further, no document image is formed in the area _F1 that abuts the area _A3 of the transfer paper P, and this area _F1 is used as a binding margin. It goes without saying that the width of the area _A3 is l.

Similarly, in Figure 6B, the left edge of manuscript O
The image of O'' is projected onto the right edge A ₁ '' of area A, while the right edge O' is projected onto point A ₄ ' within area A. In other words, the original image (reduced image) is the area from point A ₁ ″ to point A ₄ ′.
_A4 , and no document image is formed in area _A5 from point _A4 ' to point _A1 '. On the other hand, the transfer paper P is A ₁
Touches the entire width of the area. Therefore, the area of transfer paper P
An image of W-l/W times the size of the original O is formed in the area _I2 that abuts _A4 . Further, no document image is formed in the area _F2 that abuts the area _A5 of the transfer paper P, and this area _F2 is used as a binding margin. Furthermore, the width of area _A5 is l
Needless to say, it is.

In any case, although the displacement directions are different in FIGS. 6A and 6B, by controlling the motor 33 by the key group 69, the lens 4 is moved from the position shown in FIG. Regarding the direction parallel to the axis (perpendicular to the document scanning direction),
It is displaced by a distance of Wl/2 (2W-l). In addition, the transfer paper P is in contact with the same area _A1 of the drum 6 in FIGS. 6A, B, and C.

In the normal mode and the first binding margin forming mode, as shown in FIG. 7A, the leading edge I' of the original image I formed on the drum 6 and the leading edge P of the transfer paper P
are made to substantially match at the transfer station T. In other words, the image of the original is formed up to the leading edge of the transfer material P. On the other hand, in the second binding margin forming mode, a binding margin _F3 having a desired width l can be formed at the leading end of the transfer material P. In this case, as shown in FIG. 7B, the leading edge P of the transfer material P reaches the transfer station T before the leading edge I' of the original image I formed on the drum 6 reaches the transfer station T. do. Then, an image of W-l/W times that of the original O is formed on the transfer material P in an area beyond a distance l from the leading edge P, that is, in an area _I3 .

In FIGS. 7A and 7B, the rotational distance of the drum 6 from the exposure station E to the transfer station T, in other words, the stations E and T
L ₁ is the circumference of the drum 6 between the positions, and the moving distance of the transfer paper P from the pair of registration rollers 14 to the transfer station T is L 1 .
L ₂ , the circumferential speed of the drum 6, and the transport speed of the transfer paper P by the roller pair 14 are assumed to be v.

The time required from the time when the image of the leading edge O of the original is exposed on the photosensitive drum 6 at the exposure station E until the image of the leading edge O of the original reaches the transfer station T is L ₁ /
It is v. Also, the leading edge P of the transfer paper P is connected to roller pair 1.
The time required to depart from position 4 and reach transfer station T is L ₂ /v. Therefore, drum 6
By starting driving the roller pair 14 at a time (L ₁ -L ₂ )/v after the image of the leading edge O of the document is exposed, as shown in FIG. 6A,
At the transfer station T, the transfer paper P is conveyed so that the leading edge P of the transfer paper P coincides with the leading edge I' of the original image. On the other hand, from the time when the image of the leading edge O of the document is exposed on the drum 6, the time (L ₁ −l−L ₂ )/v
When the driving of the roller pair 14 is started at a later point in time, the leading edge P of the transfer paper P is moved at a time l/v longer than the leading edge I' of the document image on the drum 6 reaches the transfer station T.
Arrives at transcription department T as quickly as possible. That is, at the time when the leading edge P of the transfer paper reaches the transfer station T, the leading edge I' of the document image has just reached a point a distance l upstream from the transfer station T in the drum rotation direction. As a result, the area F ₃ of the width l of the leading edge of the transfer paper
No original image will be formed in this area.
F ₃ is not used as a binding margin, and the time point at which the registration roller pair 14 starts driving is controlled as follows. That is, 59 in Figure 7 A and B
is a detector such as a micro switch. Detector 5
9 is arranged close to the moving path of the first scanning mirror 2, as shown in FIG. After the first mirror 2 starts moving forward from its forward movement starting point position 2,
When the document reaches the position where the leading edge O of the document is scanned (position 2' in FIG. 2), the cam 62 provided on the first mirror support 36 comes into contact with this detector 59 and generates a signal to the detector 59. urge In other words, the detector 59
generates a signal at the time when scanning of the document O starts, in other words, at the time when the image of the leading edge O of the document is exposed on the drum 6 in the exposure station E. This signal activates the timer means 60. This timer means 60 is a known timer means whose set time is variable, and a group of keys 69 controls this set time. After a set time has elapsed since the timer 60 received the signal from the detector 59, the timer 60 operates a clutch 6 that transmits the driving force from a motor (not shown) to the pair of rollers 14.
1 is energized. When the clutch 61 is energized, the roller pair 14 starts rotating, and thereby the transfer paper P starts to be conveyed toward the transfer station T. Therefore, the time set in the timer 60 is (L ₁ −L ₂ )/ if the binding margin is not formed at the leading edge of the transfer paper P.
v, and when forming a binding margin of width l at the leading edge of the transfer paper P, use the key group 69 to select the above (L ₁
−l−L ₂ )/v. In other words, in the case of FIG. 7A, the timer 60 measures the time (L ₁
-L ₂ )/v, the roller pair 14 is started to be driven.
In the case of FIG. 7B, the timer 60 is connected to the detector 59.
from the time it detects that the document has started scanning.
After time (L ₁ -l-L ₂ )/v, driving of the roller pair 14 is started.

In addition, when the forward movement speed of the mirrors 2 and 3, that is, the scanning speed of the original is changed in accordance with the set copying magnification as described above, the time point at which driving the roller pair 14 is started is changed as described above. It is easiest to perform control based on the original scanning start point. This is the time from when the mirrors 2 and 3 start moving forward from their respective forward movement starting positions until the document scanning starts (the time required for the mirrors 2 and 3 to move in the pre-scanning section before the document scanning section). ) changes in response to changes in the document scanning speed, so for example, the rollers can be adjusted based on the point at which the mirrors 2 and 3 start moving forward, or the point at which the rotation of the drum 2 starts before the point at which the mirrors 2 and 3 start moving forward, etc. versus 14
This is because controlling the time point at which the drive starts makes setting the time length complicated. In particular, this complexity increases when the binding margin width l is made variable. However, the point in time when the drive of the pair of rollers 14 starts may be controlled using the point in time when the mirrors 2 and 3 start moving forward, the point in time when the rotation of the drum 2 starts, etc. as a reference point. In short, the tip of the transfer paper P

Claims (1)

[Scope of Claims] 1. A transfer type copying device capable of forming a margin at the leading edge of the transfer material in the conveyance direction, comprising: a margin width setting means for variably setting the margin width of the margin at the leading edge of the transfer material; It has a conveying means for conveying the material to the transfer section, and a copying magnification changing means, and the time when the conveying means starts conveying the transfer material to the transfer section and the above-mentioned according to the margin width set by the margin width setting means. A copying apparatus characterized in that a copying magnification is controlled by a copying magnification changing means.