JPH02238480A - Transferring material separating device - Google Patents

Abstract

PURPOSE:To exactly separate a transferring material on a transferring material carrier and to obtain optimum separating performance without damaging a separating claw and the transferring material carrier even if a mulfunction occurs in the contacting and separating operations of the separating claw with respect to the transferring material carrier by controlling the contacting and separating operation of the separating claw making use of the driving operation sent from a transferring sheet driving ring part. CONSTITUTION:A separating member is provided with a butting member 35a capable of butting with respect to a cam means mounted on the transferring material carrier and the separating claw 20 which is integrally operated with the butting member 35a and can be brought into contact and separated in respect of a transferring material supporting member. Then, the contacting and separating operations of the separating member are controlled by the shape of the cam simultaneously rotated with a ring member constituting the transferring material carrier. Thus, the transferring material on the transferring material carrier is exactly separated and the optimum separating performance is obtained without damaging the separating claw 20 and the transferring material carrier even if the malfunction occurs in the contacting and separating operations of the separating claw 20 in respect of the transferring material carrier.

Description

[Detailed Description of the Invention] , 7-1 The present invention relates to a transfer material separation device in which the transfer material is separated from the transfer material damage holding member by a separation member after the transfer material is transferred onto the transfer material. Conventionally, an image rejector formed in the shape of a rotating cylinder like a photosensitive drum or an endless belt is continuously run.
Color toner images of multiple colors of toner are sequentially formed on the surface photosensitive layer through a predetermined process, and these toner images are transferred to a sheet of paper or the like attached to a transfer drum placed close to the surface of the ft carrier. A color image forming device configured to obtain a color image by superimposing images on a sheet-like transfer material has already been proposed. Image formation like this? As shown schematically in FIG.
lb are arranged concentrically and both are integrally connected by a connecting member lc, and a transfer sheet which is a sheet-shaped dielectric material}13
It is constructed by covering the entire circumference. In the transfer drum configured in this manner, a transfer material gripping means is disposed on the connecting member 1c of the transfer drum l, and grips the leading edge of the transfer material supplied from the conveyance path in synchronization with the toner image on the image carrier. ．． Each time the transfer material approaches the fRm carrier, a toner image of each color is received on the transfer material to form a color image, and then the transfer material gripping means is released to separate the transfer material from the transfer drum. The transfer material separated from the transfer drum is then
It is delivered to the fixation site. In addition to gripping the leading edge of the transfer material, the above-mentioned transfer material gripping means pushes up the leading edge of the transfer material to release it when separating.
It is often used as an auxiliary member for separation. Therefore,
The separation device becomes complicated and expensive, and the transfer material gripping means 1
Only one sheet of transfer material can be transported to each location, which is not efficient. In order to solve this problem, the transfer material is conveyed by electrostatic adsorption to the transfer sheet, and when separated, a separation member locally deforms a part of the transfer sheet, eliminating the need for a transfer material gripping means. , a transfer drum that can transport multiple sheets of transfer material has been proposed. The transfer material separation device in this case will be explained below using FIGS. 11 to 13. That is, in the above-mentioned transfer drum, in order to weaken the adsorption force of the transfer material to the transfer sheet after the transfer process is completed, a pair of AC corona chargers (not shown) inside the transfer drum are placed facing each other with the transfer sheet in between. Remove static electricity from the transfer material using After that, the separation claw 20a disposed close to the transfer drum
In order to operate the separation pawl drive solenoid (not shown), the separation pawl drive solenoid (not shown) is activated, and the separation pawl drive solenoid (not shown) is activated.
The separation claws 20a of more than 100 places and the transfer sheet outer diameter deforming roller l9 rotatably supported at the tip of the separation claw apply a predetermined contact pressure or intrusion amount to the transfer sheet 13 using the separation claw fulcrum shaft 44 as a rotational fulcrum. You can hold it and press it against it. At the same time, rollers l8 for deforming the inner diameter of the transfer sheet, which are also driven from inside the transfer sheet }13, are pressed against the transfer sheet }13 with the same pressure, and as shown in FIG. By locally changing its curvature, the leading edge of the transfer material P is lifted from the transfer sheet 13, and the separation claw 20a enters the gap, thereby separating the transfer material from the transfer drum. Note that the roller l8 for deforming the inner diameter of the transfer sheet described above is
As shown in Figures 2 and 13, it is separated from the transfer sheet l3.
The transfer sheet may have a flexible structure, or it may be a member that is simply packed up from the inside of the transfer sheet using a Mylar or brush-like elastic body. However, according to the above-mentioned conventional example, the separation claws and the outer diameter deforming arm rollers enter the outer diameter of the transfer sheet, so they must be retracted while the connecting member 1c passes. If the separation claw is moved toward and away from the transfer drum using a drive solenoid as described above, the separation claw may not be able to retract due to electrical malfunction or false detection by the transfer drum position detection sensor. In some cases, the tip of the separating claw may collide with the side end 1c2 of the connecting member 1c (see Fig. 11), which may cause irreparable accidents such as damage to the separating claw or breakage of the drive gear of the transfer drum. was there. In addition, for example, if the distance between multiple sheets of transfer material wrapped and held around the circumferential surface of the transfer drum is narrow, or if the copying speed is high, the separation claws can be attached to the transfer drum in a very short time. It is necessary to perform contact and separation operations against the
Sequence limitations occur. Therefore, the present invention has been made in view of the above points, and an object of the present invention is to separate the transfer material that is rejected on the peripheral surface of the transfer material carrier by adsorption. Even if a malfunction occurs in driving the claw toward and away from the transfer material carrier, the transfer material on the transfer material carrier can be reliably separated without damaging the separation claw or the transfer material carrier. It is an object of the present invention to provide a transfer material separation device that can cope with an increase in image forming speed and can obtain optimal transfer material separation performance. The above object is achieved by a transfer material separation device according to the present invention. That is, to summarize, the present invention includes a transfer material support member that has a transfer material support member for supporting a transfer material and rotates endlessly while supporting the transfer material, and a transfer material support member that rotates endlessly while supporting the transfer material; A transfer material separating device comprising a separating member for separating a transfer material, the separating member having an abutment member capable of abutting against a cam means provided on the transfer material carrier, and a separating member for separating the transfer material. A separating claw is provided which operates integrally with the abutting member to be able to approach and separate from the transfer material supporting member, and by rotating the abutting member and the cam means in contact with each other, the separating claw moves the transfer material. This is a transfer material separation device that separates the transfer material by moving toward and away from a support member. That is, in the present invention, by controlling the movement of the separating member toward and away from the transfer material carrier using the shape of the cam that rotates in synchronization with the ring member constituting the transfer material carrier, malfunctions occur in the movement of the separation claw toward and away from the transfer material carrier. However, the transfer material on the transfer material holder can be reliably separated without damaging the separation claw or the transfer material carrier, and optimal separation performance can be obtained, as well as accident prevention and timing programming. It is possible to increase the copy speed by increasing the margin. EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be explained based on an embodiment thereof with reference to the accompanying drawings. FIG. 1 schematically shows the main parts of an image forming apparatus such as an electronic copying machine in which the transfer material separating device of the present invention is used.
Referring to FIG. 1, to explain the image forming process in detail, a primary charger 7 is used to charge a photosensitive drum 6 as an image carrier that is rotatably supported and rotates in the direction of the arrow. An electrostatic latent image is formed on the photosensitive drum 6 by irradiating it with a color-separated light image or a corresponding light image 8 using an exposure means that is uniformly charged and consists of, for example, a laser beam exposure device. to be accomplished. This electrostatic WI image on the photosensitive drum,
For example, a mobile developing device 12 disposed close to the photosensitive drum.
7 to visualize the image. Here, the mobile developing device 27
27M. is a developing device 27M.2 which separately stores four color developers: a magenta developer, a cyan developer, a yellow developer, and a black developer. 27C. It holds 27Y, 278K and these four developing devices. The movable developing device 1127 is provided with a guide that can be started horizontally, and transports a desired developing device to a position facing the outer peripheral surface of the photosensitive drum 6.
These developing devices develop electrostatic latent images corresponding to each color on the photosensitive tram 6. On the other hand, the transfer material P is fed from a stacker in which the image center is aligned with the center of the transfer material size, hits the registration roller 28, stops there, and then moves in the direction of rotation of a transfer drum (not shown). When receiving a conveyance start signal from the position sensor, the registration roller 28 starts rotating and sends the transfer material P to the transfer drum l. The frame of the transfer drum l configured as a transfer material carrier is
It consists of a pair of cylindrical ring members 1a and lb that are pivotally arranged in front and behind each other, and a connecting part that connects these ring members.The outer peripheral surface of this frame is provided with a transfer material supporting member. A transfer sheet 13 is wound around the transfer sheet 13, and the transferred transfer material P is attracted and gripped onto this transfer sheet 13. In order to attract and hold the transfer material onto the transfer sheet 13, an adsorption corona charger 23 is installed inside the transfer drum, which charges the transfer sheet 13 with an electric charge of opposite polarity to that of the toner. By arranging a grounded conductive roller 24 which is brought into contact with the transfer material P when adsorbing P onto the transfer sheet 13 and serving as a counter electrode of the adsorption corona charger 23, and injecting electric charge into the transfer material. It is done. In this way, the transfer material attracted to the transfer drum is conveyed according to the rotation of the transfer drum, and when it reaches the development position of the photosensitive drum 6, the visible image of the first color, that is, the toner image on the photosensitive drum 6 is transferred to the photosensitive drum 6. A transfer corona charger l4 disposed inside the transfer drum corresponding to the development position of the drum 6 applies an electric charge of opposite polarity to the toner to the back surface of the transfer sheet 13, thereby transferring the toner to the transfer material. In the same manner, toner images of the second and subsequent colors are transferred to the same transfer material, thereby forming a full-color image on the transfer material. After the transfer process is completed, in order to weaken the attraction force of the transfer material to the transfer sheet 13, the transfer material is neutralized using a pair of AC corona chargers 15 and 16 placed opposite each other with the transfer sheet 13 in between. The neutralized transfer material is sent to the transfer material separation device It30 constituting the transfer material separation member, where it is separated from the transfer sheet, and a corona charger 17 is used to prevent image disturbance due to peeling discharge that occurs during this time. Perform AC corona charging using Thus, after the separation process is completed, the transfer material is transferred to the transport unit 2.
5 to the fixing device 26, where the toners on the transfer material are mixed and fixed, and then discharged to the outside of the image forming apparatus. Here, the transfer material separation device 13 used in the above embodiment is
0 will be explained in more detail below using FIGS. 2 to 6. First, referring to FIG. 2, the transfer material separating device 30 is...
A fulcrum shaft 44 is provided with separation claw front and rear side plates 45.46, and is rotatably supported at both ends by the separation claw rear side plates 45.46.
The separating claw support plate 33 is located between the front and rear side plates 45 and 46.
A pressurizing plate spring 44a is fixed thereto (see Fig. 4). The separation claw support plate 33 is provided with one or more separation claws 20, and a roller for deforming the outer diameter of the transfer sheet is provided at the tip of the first separation claw 20a arranged approximately in the center of the width in the longitudinal direction. l9 is rotatably arranged, while
At approximately the same position as the separating claw 20a in the longitudinal direction of the separating claw support plate 33, and at a predetermined interval on the L flow side in the transfer material conveyance direction (direction of arrow A in FIG. 2) on the inside of the transfer drum, A river roller 18 with a variable seat inner diameter is installed. In addition, second separation claws 20b are provided at a predetermined interval in the longitudinal direction of the separation claw support plate 33.
The tip position of the first separating claw 20a is slightly moved downstream in the transfer material conveyance direction from the tip position of the first separating claw 20a. The separation claw support plate 33 also has a protrusion at its end. ! The support member 35 of the contact roller 35a is fixed,
At the time of separating the transfer material on the transfer sheet, the abutting roller 35a is pressed against the groove-shaped positioning portion 1d as a cam means provided on the ring member 1a of the transfer drum by a predetermined pressing force from the pressure leaf spring 44a. The position of the separation claw 20 is determined by the collision. Furthermore, a separation claw release tension spring 37 is locked to at least one of both ends of the separation claw support plate 33, and this spring 27 constantly applies a clockwise force in FIGS. 3 to 5. It is being done. On the other hand, a drive arm 38 is fixed to the outer end of the fulcrum shaft 44 protruding from the separation claw front side plate 45, and a bin 38a is formed integrally with the drive arm 38.
A drive solenoid 40 is connected to the drive solenoid 40 via a connection plate 39, whereby the suction force of the drive solenoid 40 can be converted into counterclockwise rotational drive by a fulcrum shaft 44 and transmitted. As shown in the sixth factor, the cross-sectional shape of the groove-shaped positioning portion 1d provided on one side of the ring member 1a of the transfer drum is such that the separation claw 2o is used to separate the transfer material held on the transfer sheet 13. A slot is provided in the direction of the circle II1 of the ring member 1a in a corresponding range at a portion where the outer diameter of the transfer sheet 13 should be slightly different. Further, the connecting member 1c is formed so as to leave the original outer diameter of the ring member 1a without providing a slot in the circumferential direction of the ring member 1a in a corresponding range. Here, the depth Jla of the provided slot is such that when the abutting roller 35a that abuts against this slot with a predetermined pressure moves upward F with a stroke of the slot depth la, the abutting roller 35a When the tip of the separation claw 20a that moves integrally with the vertical movement approaches the transfer drum, it has appropriate transfer material separation performance, and when it separates from the transfer drum, the tip of the separation claw 20a and the roller for deforming the outer diameter of the transfer sheet The dimensions are set so that l9 does not come into contact with the connecting member 1c. Further, as can be understood by referring to FIG. 6, the slope shape of the cross section of the ring member la in the transfer material transfer range (1) similarly causes the separation claw 20a to move when the abutting roller 35a descends along it. The tip and the roller 19 for changing the outer diameter of the transfer sheet have a curved or linear shape that appropriately separates the transfer material whose tip is positioned at point C shown in FIG. The operation of the transfer material separation device configured as above will be explained below. Currently, an image forming apparatus such as a Denryoichi copying machine using the transfer material separating device according to the present invention is in operation, and a latent image formed on the photosensitive drum 6 through a predetermined process is transferred to a mobile developing device. Attire! ! 27 to form a toner image, and this toner image on the photosensitive drum 6 is transferred to a transfer material adsorbed on a transfer sheet 13 at a position as shown in FIG. During this period, as shown in FIGS. 3 and 4, the separation claw 20 is maintained and stopped at a position completely retracted from the transfer drum. Then, after or during the transfer of Saiwani-iro. The tip of the transfer material is separated by the separation claw 2.
Before reaching 0, the drive solenoid 40 is energized at a predetermined timing. The energized drive solenoid 40, as shown in FIG. 1 connection plate 39, drive arm 3
A counterclockwise rotational force (see FIGS. 3 to 5) is applied to the fulcrum shaft 44 through a pressure plate spring 44a.
The abutting roller 35a is driven until it abuts against the positioning portion 1d of the ring member 1a of the transfer drum frame with a predetermined contact pressure. Here, if the abutting roller 35a abuts against the groove-shaped positioning portion 1d of the ring member 1a in the transfer range (1) shown in FIG. The tips of the separation claws 20 and the transfer sheet outer diameter deformation roller 19 operate at exactly the same timing as the vertical movement of the abutting roller 35a, which operates when the rollers 35a abut against each other.
It enters under the transfer material Pi and separates the transfer material P1. Further, for example, the abutting roller 35a butts against the positioning portion 1d in the separation claw separation range shown in FIG. When the separation claw 20 is released, the tip of the separation claw 20 and the roller 19 for deforming the outer diameter of the transfer sheet remain in a retracted state until the connecting member 1c finishes passing, and the abutting roller 35a moves to the sixth position.
After descending down the slope in the transfer range (2) in the figure, it is guided to the same separation position as described above. Therefore, in the embodiment E of the present invention as described above,
The following advantages arise. That is, l) when separating the transfer materials in the order of P2→Pi as shown in FIG. -f
(If not, the separation claw will collide with the connecting member). In other words, the same sequence as when separating the transfer materials in the order of P14P2 is sufficient, so the program is simplified and the OFF operation and ON! It is possible to eliminate negative effects on image formation, such as self-impingement of the separating claw on the transfer drum, which occurs during B-printing. 2) Due to accidents such as electrical malfunctions and erroneous detection of the transfer drum rotation position sensor,
Even if the separation drive solenoid 40 is no longer energized or is delayed, the transfer material can be separated properly and no irreparable damage will occur to the separation claw or transfer drum. 3
) When the separation claw contacts the transfer drum, the contact operation is ON. OF
The impact of the separation claws on the transfer sheet caused by F can be reduced by lowering the inclination of the slopes in the transfer ranges (1) and (2). 4) If the transfer material is between point C and point D, which is the separation claw entry range shown in Fig. 6,
Separation is possible no matter where it is adsorbed or how many sheets are adsorbed. 5) There are no restrictions on the response time of the separation claw, and the number of copies can be reduced.
Copy speed can be easily increased. Next, another embodiment of the transfer material separating device according to the present invention will be described with reference to FIG. In this sixth embodiment, a ring member 1a similar to the previous embodiment is used.
As shown in FIG. 7, the cross-sectional shape of the positioning portion 1d has a first concave groove portion (I depth pattern 'b) near the connecting member 1c.
), and a second concave groove (
A groove with a groove depth Jlc) is formed. Then, in this cross-sectional shape, position the tip of the first sheet of long-size transfer material or short-size transfer material to point E shown in Figure 7, and place the tip of the first sheet of short-size transfer material Position the transfer material so that the tip is at point F, and electrostatically attract the transfer material onto the transfer sheet. Positioning portion 1d of ring member 1a having such a configuration
When the separation claw abutting roller 35a is placed along the transfer material 7, the tip of the separation claw 20 and the roller for deforming the outer diameter of the transfer sheet are applied only to the tip of the transfer material where the toner image has been transferred to the transfer material 7 after completing the predetermined image forming process. When the roller 19 enters the outer diameter of the transfer sheet and the remaining portion of the transfer material passes over the separation claw 20, the roller for changing the outer diameter of the transfer sheet and the separation claw 20! 9 is away from the transfer sheet, so it shortens the deformation time of the transfer sheet.
Therefore, the durability of the transfer sheet can be improved. Furthermore, if the roller 18 for deforming the inner diameter of the transfer sheet is operated in the same manner at the same time, the durability can be further improved. Regarding the transfer sheet, the general method for fixing the transfer sheet to the transfer drum is to fasten the front and rear ends of the transfer sheet to the connecting member 1c. However, when the front and rear ends of the transfer sheet are fastened to the connecting member 1c of the transfer drum in this manner, the closer to the connecting member 1c the transfer sheet becomes less likely to deform. In other words, at points E and F shown in FIG.
The optimum contact pressure of roller 19 for deforming the outer diameter of the transfer sheet to the transfer sheet for separation into H is different. Therefore, in this embodiment, to solve such problems,
As mentioned above, this problem can be easily solved by changing the groove depths of the first and second concave grooves. In other words, even if the optimum amount of penetration of the separating claw 20 into the transfer sheet varies depending on the position where the leading edge of the transfer material is placed or the method of fixing the transfer sheet, the groove depth of the positioning portion 1d corresponding to this in the circumferential direction can be adjusted. By changing it accordingly, it is possible to obtain optimal separation performance at any position. Next, still another embodiment of the transfer material separating device according to the present invention will be described with reference to FIGS. 8 and 8a. In this embodiment, as the positioning part 1d of the ring member 1a similar to the previous embodiment, a predetermined length is provided on one side of the ring member 1a on the circumference, as shown in FIGS. 8 and 8a. A groove-shaped positioning portion 1d is provided to connect the connecting member 1.
c is provided with a concave groove 4l in a portion corresponding to the separation claw 20 in the longitudinal direction. At that time, the abutting roller 3
When 5a hits the positioning part 1d, the separation claw 2
The positioning part 1d and the groove part 4l are formed so that the positioning part 1d and the groove part 4l can be moved in parallel with the groove part 4l provided in the connecting member 1c. On the other hand, a pair of notches 43 are made in the transfer sheet at the portions corresponding to the grooves 4l of the connecting member 1c, and J1! The front and rear ends are glued to the connecting member 1c, and this groove fi4 is
The transfer sheet portion corresponding to No. 1 is also adhered to the groove 4l using the pair of notches 43. Then, the transfer material adsorbed onto the transfer sheet of the transfer drum has its leading edge non-image area at point G on the groove 4l.
(See Figures 8 and 8a). As a result of this positioning, a gap is already formed between the transfer material and the transfer sheet at the leading end of the transfer material, so the separation claw 20 that operates in parallel with the abutment roller 35a of the positioning portion 1d is connected to the connecting member 1c. The transfer material can be separated from the transfer sheet by entering the groove 4l. During this separation, the transfer sheet is not deformed in any way by the separation claws 20 or the like, so the durability of the transfer sheet can be dramatically improved. Furthermore, at positions facing each other in the circumferential direction of the positioning portion 1d, there may be a groove for deformation and separation as in the embodiment shown in FIG. 7 (in that case, two transfer materials can be placed on the transfer sheet). ), and the connecting member 1c
The transfer material gripping means may be provided. In this case, since the transfer material gripping means does not require a function as a separation aid, the structure can be simplified and costs can be reduced. Next, still another embodiment of the transfer material separating device according to the present invention will be described with reference to FIGS. 9 and 9a. In the above embodiment, a part of the ring member 1a is used to form the cam surface of the positioning portion 1d of the abutting roller 35a, but in this embodiment, the cam surface shown in FIG. 9 and FIG. A gear 5l that rotates integrally with the ring member 1a is attached to the ring member 1a, and a drive shaft 53 rotatably supported by front and rear side plates (not shown) is provided.
With a configuration in which a slave gear 52 that meshes with the gear 5l is attached to the drive shaft 51, and a cam 54 is fixed to a part of the drive shaft 53, it is expected that the same effect as the transfer material separation device shown in the above-mentioned embodiment can be expected. Can be done. At this time, the number of times the separation claw 20 moves up and down with respect to the transfer sheet is the gear train 5L.
, 52, and the drive shaft 5
3 and the driven gear 52, a driving/disconnecting means (not shown) such as an electromagnetic clutch and a transmission gear train (not shown) are provided, so that the number of vertical movements of the separation claw 20 can be controlled by, for example, the number of vertical movements of the separation claw 20. It is also possible to perform control according to the transfer size, such as twice for long-size transfer materials and once for long-size transfer materials. Furthermore, in the above-mentioned embodiment, the transfer drum system in which the transfer sheet is held in a cylindrical shape has been described, but as shown in FIG. 9 of this embodiment, the transfer sheet
13 in the form of a belt and a driving (or driven) pulley arranged in accordance with the transfer material separation position, it is also possible to use this in place of the ring member described in the previous embodiment. As described above, according to the transfer material separation device of the present invention, by controlling the approach and separation movement of the separation claws by obtaining drive from the transfer sheet drive ring section, the separation claws are able to carry the transfer material. Even if a malfunction occurs in the movement toward and away from the body, the transfer material on the transfer material carrier can be reliably separated without damaging the separation claw or the transfer material carrier, and the optimum separation performance can be achieved. At the same time, it is possible to prevent accidents and increase copy speed by increasing the timing program margin.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram illustrating the main parts of an image forming apparatus in which the transfer material separating device of the present invention is used. FIG. 2 is a schematic perspective view of essential parts of an embodiment of the transfer material separating device according to the present invention. FIGS. 3 to 5 are explanatory views for explaining the operating state of the transfer material separating device shown in FIG. 2, respectively. FIG. 6 is a cross-sectional view of the ring member in the transfer material delivery range of the transfer drum of the transfer material separation device shown in FIG. 2. FIG. 7 is a cross-sectional view of the ring member in the transfer material delivery range of another embodiment of the transfer material separation device of the present invention. FIG. 8 is a schematic partial perspective view of another embodiment of the transfer material separating device of the present invention. FIG. 8a is a schematic partial cross-sectional view of the ring member of the transfer material separating device of FIG. 8. FIG. 9 is a schematic partial front sectional view of another embodiment of the trajectory material separation device of the present invention. Figure 9a is a schematic partial cross-sectional view of Figure 9. FIG. 10 is a schematic perspective view of a conventional transfer drum. Figure 11 is a schematic cross-sectional view of Figure 10. FIGS. 12 and 13 are respectively schematic explanatory diagrams of suppressing means for causing deformation of a transfer sheet of a conventional transfer drum. 1: Transfer drum la: Ring member lb: Ring member 1C: Connection member ld: Positioning portion 13: Transfer sheet 35a: Abutment roller Fig. 7 Fig. 8 a 4b Fig. 5 Fig. 6 Fig. 8 Fig. 9 factor Figure 12

Claims (1)

[Claims] 1) Having a transfer material support member for supporting the transfer material,
A transfer material separation device comprising a transfer material carrier that rotates endlessly while supporting the transfer material, and a separation member for separating the transfer material from the transfer material support member, the separation member comprising: It has an abutment member that can abut against the cam means provided on the transfer material carrier, and a separation claw that operates integrally with the abutment member to be able to approach and separate from the transfer material support member. A transfer material separation device comprising: a transfer material separating device, wherein the separation claw moves toward and away from the transfer material support member to separate the transfer material by rotating the abutment member and the cam means in contact with each other. .