1. A roller to be provided in a main assembly of an image forming apparatus or in a cartridge detachably mountable to the main assembly, said roller comprising:
a cylindrical shaft supported by the main assembly or the cartridge, wherein said cylindrical shaft includes, in at least one position on a circumference thereof, a separation region where a pair of end portions thereof which oppose to or contact each other with respect to a circumferential direction, and wherein the separation region extends in an axial direction of said cylindrical shaft; and
a rotatable cylindrical member mounted around an outer circumference of said cylindrical shaft, wherein said rotatable cylindrical member is rotatable about said cylindrical shaft while an inner peripheral surface thereof is press-contacted to an outer peripheral surface of said cylindrical shaft in a region other than the separation region with respect to the circumferential direction.
2. A roller according to claim 1, wherein said cylindrical shaft and said rotatable cylindrical member are press-contacted to each other in a certain direction.
3. A roller according to claim 1, further comprising an urging member for urging said cylindrical shaft,
wherein the separation region opposes said urging member with respect to said rotatable cylindrical.
4. A roller according to claim 3, wherein said rotatable cylindrical member contacts another member supported at an outer peripheral surface by the main assembly or the cartridge,
wherein said urging member is provided in the main assembly or the cartridge, and
wherein said cylindrical shaft is urged by said urging member in a direction toward a contact portion between said rotatable cylindrical member and said another member.
5. A roller according to claim 1, wherein the inner peripheral surface of said rotatable cylindrical member is press-contacted to the processing station of said cylindrical shaft at a portion opposing the separation region.
6. A roller according to claim 1, wherein said cylindrical shaft includes an engaging portion engageable with a rotation preventing portion provided in the main assembly or the cartridge.
7. A roller according to claim 6, wherein said engaging portion is provided at an end portion of said cylindrical shaft with respect to an axial direction.
8. A roller according to claim 7, wherein said engaging portion projects outwardly from the end portion in the axial direction.
9. A roller according to claim 8, wherein said engaging portion projects obliquely with respect to the axial direction.
10. A roller according to claim 9, wherein said engaging portion projects obliquely from the end portion toward a center axis of said cylindrical shaft with respect to the axial direction.
11. A roller according to claim 6, wherein said engaging portion is provided in a position, corresponding to a contact portion between said cylindrical shaft and said rotatable cylindrical member, at an end portion of said cylindrical shaft with respect to an axial direction.
12. A roller according to claim 1, wherein said cylindrical shaft is molded by bending a metal plate in a cylindrical shape.
13. A roller according to claim 6, wherein said cylindrical shaft is molded by bending a metal plate, including a frame portion, a flat plate portion and a connecting portion connecting the roller portion and the flat plate portion, in a cylindrical shape at the flat plate portion and then by separating the flat plate portion from the frame portion by cutting the connecting portion while leaving a part of the connecting portion as said engaging portion at an end portion of the flat plate portion.
14. A roller according to claim 13, wherein said engaging portion is molded by moving a pair of tools relative to the connecting portion so that the part of the connecting portion left at the end portion of the flat plate portion inclines with respect to an axial direction when the connecting portion is cut by moving the pair of tools relative to the connecting portion.
15. A roller according to claim 1, wherein a lubricant is supplied to an inside of a cylindrical portion of said cylindrical shaft and bleeds out to an outside of the cylindrical portion through the separation region.
16. A roller according to claim 1, wherein said roller feeds a recording material in the image forming apparatus.
17. A roller according to claim 1, wherein said roller stretches an endless belt in the image forming apparatus.
18. An image forming apparatus comprising:
a cylindrical shaft supported by the main assembly or the cartridge, wherein said cylindrical shaft includes, in at least one position on a circumference thereof, a separation region where a pair of end portions thereof which oppose to or contact each other with respect to a circumferential direction, and wherein the separation region extends in an axial direction of said cylindrical shaft;
a rotatable cylindrical member mounted around an outer circumference of said cylindrical shaft, wherein said rotatable cylindrical member is rotatable about said cylindrical shaft while an inner peripheral surface thereof is press-contacted to an outer peripheral surface of said cylindrical shaft with respect to the circumferential direction in a region other than the separation region;
an urging member for urging said cylindrical shaft,
wherein the separation region is in a position opposing said urging member with respect to said rotatable cylindrical member.
19. A manufacturing method of a cylindrical shaft constituting a roller to be provided in a main assembly of an image forming apparatus or in a cartridge detachably mountable to the main assembly, wherein the cylindrical shaft includes, in at least one position on a circumference thereof, a separation region in which a pair of end portions thereof which oppose to or contact each other with respect to a circumferential direction, wherein the support extends in an axial direction of the cylindrical shaft, wherein a rotatable cylindrical member is rotatably mounted around an outer circumference of the cylindrical shaft, and wherein the cylindrical shaft further includes an engaging portion engageable with a rotation preventing portion provided in the main assembly or the cartridge, said manufacturing method comprising:
a bending step of bending a metal plate, including a frame portion, a flat plate portion and a connecting portion connecting the frame portion and the flat plate portion, in a cylindrical shape at the flat plate portion; and
a cutting step of separating the flat plate portion, molded in the cylindrical shape, from the frame portion while leaving a part of the connecting portion as the engaging portion at an end portion of the flat plate portion molded in the cylindrical shape.
20. A manufacturing method according to claim 19, wherein in said cutting step, when the connecting portion is cut by moving a pair of tools relative to the connecting portion, the pair of tools is moved relative to the connecting portion so that the part of the connecting portion left at the end portion of the flat plate portion inclines with respect to the axial direction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A processor-readable medium storing code representing instructions to cause a processor to perform a process, the code comprising code to:
receive at a server a packet from an application including information associated with the application in a sender field and a numeric representation of a connect function in a command field; and
create a response packet, the create a response packet including code to:
place a unique client identifier and a clientsender relation identifier in a sender field;
generate a session key associated with the application;
generate a transaction key associated with the application;
calculate a packet check sum associated with the application and place the packet check sum in a validation field;
combine the transaction key with the session key using an XOR operation and place a result of the combination into a transaction key packet field;
calculate a hash-function associated with a secret code of the application and combine the hash-function with the session key using an XOR operation and place a result of the combination in an authentication packet field;
calculate a packet size and place the packet size into a length packet field.
2. The processor-readable medium of claim 1, further comprising code to:
send the response packet to the application.
3. The processor-readable medium of claim 1, further comprising code to:
create a failed authentication notification packet; and
send the failed authentication notification packet to the application.