A process cartridge comprising: a casing including an opening and an arc-shaped protrusion on an external portion of the casing adjacent to the opening; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1; and a coupling member having an axis L2, the coupling member having (i) a first end portion connected to the photosensitive drum, (ii) a second end portion including at least one projection that is open to the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein a maximum distance as measured from the axis L2, in a direction perpendicular to the axis L2, of at least part of the connecting portion is shorter than a distance between the at least one projection and the axis L2, and wherein at least part of the second end portion extends beyond the opening in the direction of the axis L1, wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance, and wherein the arc-shaped protrusion extends only partway around the coupling member. view more

A process cartridge according to claim 1, further comprising a second protrusion extending partway around the coupling member.

A process cartridge according to claim 1, wherein the arc-shaped protrusion is disposed adjacent to a peripheral surface of the photosensitive drum as seen in a direction of the axis L.

A process cartridge comprising: a casing including an opening and at least one protrusion on an external portion of the casing adjacent to the opening; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1; a rotatable developing roller configured to develop a latent image formed on the photosensitive drum; a coupling member having an axis L2, the coupling member having (i) a first end portion connected to the photosensitive drum, (ii) a second end portion including at least one projection that is open to the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein a maximum distance as measured from the axis L2, in a direction perpendicular to the axis L2, of at least part of the connecting portion is shorter than a distance between the at least one projection and the axis L2, and wherein at least part of the second end portion extends beyond the opening in the direction of the axis L1, wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance, and wherein the protrusion is provided adjacent to the coupling member with at least part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L1 when the coupling member takes the first position. view more

A process cartridge according to claim 6, wherein the protrusion is disposed adjacent to a peripheral surface of the photosensitive drum as seen in a direction of the axis L.

A process cartridge according to claim 6, wherein the protrusion is provided adjacent to the coupling member with at least part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L away from the developing roller when the coupling member takes the first position. view more

A process cartridge comprising: a casing; developer contained within the casing; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing about the axis L1; a developing roller having an axis L1′, the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the casing to permit rotation about the axis L1′; a drum flange provided at an end of the photosensitive drum, the drum flange being rotatable with the photosensitive drum about the axis L1, and a part of the drum flange being positioned within the photosensitive drum; and a coupling member having an axis L2 and including (i) a first end portion at least a part of which is positioned within the drum flange, the first end portion being operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion including (ii-i) a surface recessed in the second end portion and facing away from the first end portion and (ii-ii) at least one projection projecting from a surface adjacent to the recessed surface, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance, and wherein a maximum distance as measured from the axis L2, in a direction perpendicular to the axis L2, of at least a part of the connecting portion is shorter than a distance between the at least one projection and the axis L2. view more

A process cartridge according to claim 1, wherein, for at least part of the second end portion, a maximum distance from the axis L to an outermost surface of the second end portion along a line perpendicular to the axis L increases as the distance along the axis L from the connecting portion increases. view more

A process cartridge according to claim 1, wherein the casing includes an opening and at least one protrusion on an external portion of the casing adjacent to the opening.

A process cartridge according to claim 4, wherein the protrusion is provided adjacent to the coupling member with at least part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L away from the developing roller when the coupling member takes the first position. view more

A process cartridge according to claim 1, wherein the first end portion of the coupling member is operatively connected to the photosensitive drum via the drum flange and the developing roller is operatively connected to the first end portion via a gear on the drum flange. view more

A process cartridge comprising: a guide member positioned at a side of the process cartridge; developer contained in the process cartridge; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the process cartridge to permit rotation about the axis L1; a developing roller having an axis L1', the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the process cartridge to permit rotation about the axis L1'; and a coupling member having an axis L2, the coupling member including (i) a first end portion operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion including at least one projection having a facing portion that faces the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein, for at least a part of the connecting portion, a maximum distance from the axis L2 along a line perpendicular to the axis L2 to an outermost surface of the connecting portion is shorter than a distance between the facing portion and the axis L2 along a line perpendicular to the axis L2, wherein, for at least part of the second end portion, a maximum distance from the axis L2 to the outermost surface of the second end portion along a line perpendicular to the axis L2 increases as the distance along the axis L2 from the connecting portion increases, and wherein a relative positioning of the coupling member and the guide member is changeable between (i) a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and (ii) a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, wherein the first distance is greater than the second distance. view more

A process cartridge according to claim 1, further comprising: a flange provided at one end of the photosensitive drum, the flange being coaxial with the axis L1, wherein the flange has a hollow portion, and at least part of the first end portion of the coupling member is positioned in the hollow portion of the flange. view more

A process cartridge according to claim 1, wherein the coupling member and the guide member are positioned on opposite sides of the process cartridge.

A process cartridge according to claim 1, further comprising: a casing, wherein the guide member is located at an outermost part of the casing.

A process cartridge according to claim 6, wherein the guide member protrudes from the casing.

A process cartridge according to claim 1, wherein the second end portion includes an opening to a recessed surface, with the recessed surface facing away from the connecting portion.

A process cartridge according to claim 9, wherein, in the direction of the axis L2, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 9, wherein, in the direction of the axis L, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 9, wherein the at least one projection is farther from the axis L2 in a direction perpendicular to the axis L2 than the recessed surface is from the axis L2 in the direction perpendicular to the axis L2.

A process cartridge according to claim 9, wherein the at least one projection is farther from the axis L in a direction perpendicular to the axis L than the recessed surface is from the axis L in the direction perpendicular to the axis L.

A process cartridge according to claim 1, wherein the connecting portion comprises a shaft extending in a direction of the axis L.

A process cartridge according to claim 1, wherein the connecting portion comprises a shaft extending in a direction of the axis L2.

A process cartridge according to claim 1, wherein the difference between the first distance and the second distance is equal to or greater than a length of the at least one projection as measured in a direction of the axis L.

A process cartridge according to claim 1, wherein the difference between the first distance and the second distance is equal to or greater than a length of the at least one projection as measured in a direction of the axis L2.

A process cartridge comprising: a casing; developer contained in the casing; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1; a developing roller having an axis L1', the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the casing to permit rotation about the axis L1'; and a coupling member having an axis L2, the coupling member including (i) a first end portion operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion including at least one projection having a facing portion that faces the axis L2, with a tip of the at least one projection being positioned adjacent to a first side of the process cartridge, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein, for at least a part of the connecting portion, a maximum distance from the axis L2 along a line perpendicular to the axis L2 to an outermost surface of the connecting portion is shorter than a distance between the facing portion and the axis L2 along a line perpendicular to the axis L2, wherein, for at least part of the second end portion, a maximum distance from the axis L2 to the outermost surface of the second end portion along a line perpendicular to the axis L2 increases as the distance along the axis L2 from the connecting portion increases, wherein the process cartridge is changeable between a first configuration and a second configuration, and wherein a distance in a direction of the axis L1 between a tip of the at least one projection of the coupling member and a farthest extent of the process cartridge on a second side of the process cartridge that is opposite to the first side is greater in the first configuration than in the second configuration. view more

A process cartridge according to claim 16, further comprising: a flange provided at one end of the photosensitive drum, the flange being coaxial with the axis L1, wherein the flange has a hollow portion, and at least part of the first end portion of the coupling member is positioned in the hollow portion of the flange. view more

A process cartridge according to claim 16, wherein the second end portion includes an opening to a recessed surface, with the recessed surface facing away from the connecting portion.

A process cartridge according to claim 19, wherein, in the direction of the axis L2, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 19, wherein, in the direction of the axis L, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 19, wherein the at least one projection is farther from the axis L2 in a direction perpendicular to the axis L2 than the recessed surface is from the axis L2 in the direction perpendicular to the axis L2.

A process cartridge according to claim 19, wherein the at least one projection is farther from the axis L in a direction perpendicular to the axis L than the recessed surface is from the axis L in the direction perpendicular to the axis L.

A process cartridge according to claim 16, wherein the connecting portion comprises a shaft extending in a direction of the axis L.

A process cartridge according to claim 16, wherein the connecting portion comprises a shaft extending in a direction of the axis L2.

A process cartridge according to claim 16, wherein the farthest extent on the second side of the process cartridge is a part of a guide member.

A process cartridge according to claim 16, wherein the difference between the distance in the first configuration and the distance in the second configuration is equal to or greater than a length of the at least one projection as measured in a direction of the axis L. view more

A process cartridge according to claim 16, wherein the difference between the distance in the first configuration and the distance in the second configuration is equal to or greater than a length of the at least one projection as measured in a direction of the axis L2. view more

A process cartridge according to claim 16, wherein the casing includes an opening and at least one protrusion on an external portion of the casing adjacent to the opening, and wherein the protrusion is provided adjacent to the coupling member with the part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L1 when the axis L2 of the coupling member aligns with the axis L1 of the photosensitive drum. view more

A process cartridge according to claim 27, wherein the protrusion is provided adjacent to the coupling member with the part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L1 away from the developing roller when the axis L2 of the coupling member aligns with the axis L1 of the photosensitive drum. view more

A process cartridge comprising: a guide member positioned at a side of the process cartridge; developer contained within the process cartridge; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the process cartridge to permit rotation about the axis L1; a developing roller having an axis L1′, the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the process cartridge to permit rotation about the axis L1′; and a coupling member having an axis L2, the coupling member including (i) a first end portion operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion including at least one projection, with the at least one projection including a facing portion that faces the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein, for at least a part of the connecting portion, a maximum distance from the axis L2 along a line perpendicular to the axis L2 to an outermost surface of the connecting portion is shorter than a distance between the facing portion and the axis L2 along a line perpendicular to the axis L2, and wherein a relative positioning of the coupling member and the guide member is changeable between (i) a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and (ii) a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, wherein the first distance is greater than the second distance. view more

A process cartridge according to claim 1, further comprising: a flange provided at one end of the photosensitive drum, the flange being coaxial with the axis L1, wherein the flange has a hollow portion, and at least part of the first end portion of the coupling member is positioned in the hollow portion of the flange. view more

A process cartridge according to claim 1, wherein the coupling member and the guide member are positioned on opposite sides of the process cartridge.

A process cartridge according to claim 1, further comprising: a casing, wherein the guide member is located at an outermost part of the casing.

A process cartridge according to claim 6, wherein the guide member protrudes from the casing.

A process cartridge according to claim 1, wherein the second end portion includes an opening to a recessed surface, with the recessed surface facing away from the connecting portion.

A process cartridge according to claim 9, wherein, in the direction of the axis L2, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 9, wherein, in the direction of the axis L, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 10, wherein the at least one projection is farther from the axis L2 in a direction perpendicular to the axis L2 than the recessed surface is from the axis L2 in the direction perpendicular to the axis L2.

A process cartridge according to claim 10, wherein the at least one projection is farther from the axis L in a direction perpendicular to the axis L than the recessed surface is from the axis L in the direction perpendicular to the axis L.

A process cartridge according to claim 1, wherein the connecting portion comprises a shaft extending in a direction of the axis L.

A process cartridge according to claim 1, wherein the connecting portion comprises a shaft extending in a direction of the axis L2.

A process cartridge according to claim 1, wherein the difference between the first distance and the second distance is equal to or greater than a length of the at least one projection as measured in a direction of the axis L.

A process cartridge according to claim 1, wherein the difference between the first distance and the second distance is equal to or greater than a length of the at least one projection as measured in a direction of the axis L2.

A process cartridge comprising: a casing; developer contained in the casing; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1; a developing roller having an axis L1′, the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the casing to permit rotation about the axis L1′; and a coupling member having an axis L2, the coupling member including (i) a first end portion operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion including at least one projection, with the at least one projection including a facing portion that faces the axis L2, and with a tip of the at least one projection being positioned adjacent to a first side of the process cartridge, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein, for at least a part of the connecting portion, a maximum distance from the axis L2 along a line perpendicular to the axis L2 to an outermost surface of the connecting portion is shorter than a distance between the facing portion and the axis L2 along a line perpendicular to the axis L2, wherein the process cartridge is changeable between a first configuration and a second configuration, and wherein a distance in a direction of the axis L1 between a tip of the at least one projection of the coupling member and a farthest extent of the process cartridge on a second side of the process cartridge that is opposite to the first side is greater in the first configuration than in the second configuration. view more

A process cartridge according to claim 16, further comprising: a flange provided at one end of the photosensitive drum, the flange being coaxial with the axis L1, wherein the flange has a hollow portion, and at least part of the first end portion of the coupling member is positioned in the hollow portion of the flange. view more

A process cartridge according to claim 16, wherein the second end portion includes an opening to a recessed surface, with the recessed surface facing away from the connecting portion.

A process cartridge according to claim 19, wherein, in the direction of the axis L2, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 19, wherein, in the direction of the axis L, the at least one projection is farther from the connecting portion than the recessed surface is from the connecting portion.

A process cartridge according to claim 19, wherein the at least one projection is farther from the axis L2 in a direction perpendicular to the axis L2 than the recessed surface is from the axis L2 in the direction perpendicular to the axis L2.

A process cartridge according to claim 19, wherein the at least one projection is farther from the axis L in a direction perpendicular to the axis L than the recessed surface is from the axis L in the direction perpendicular to the axis L.

A process cartridge according to claim 16, wherein the connecting portion comprises a shaft extending in a direction of the axis L.

A process cartridge according to claim 16, wherein the connecting portion comprises a shaft extending in a direction of the axis L2.

A process cartridge according to claim 16, wherein the farthest extent on the second side of the process cartridge is a part of a guide member.

A process cartridge according to claim 16, wherein the difference between the distance in the first configuration and the distance in the second configuration is equal to or greater than a length of the at least one projection as measured in a direction of the axis L. view more

A process cartridge according to claim 16, wherein the difference between the distance in the first configuration and the distance in the second configuration is equal to or greater than a length of the at least one projection as measured in a direction of the axis L2. view more

A process cartridge according to claim 16, wherein the casing includes an opening and at least one protrusion on an external portion of the casing adjacent to the opening, and wherein the protrusion is provided adjacent to the coupling member with the part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L1 away from the developing roller when the axis L2 of the coupling member aligns with the axis L1 of the photosensitive drum. view more

A process cartridge comprising: a casing; developer contained within the casing; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1; a developing roller having an axis L1′, the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the casing to permit rotation about the axis L1′; and a coupling member having an axis L2 and including (i) a first end portion operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion having an outermost surface, (iii) an axle portion connecting the first end portion and the second end portion to each other, and (iv) at least one projection extending from the second end portion, wherein, for at least part of the outermost surface of the second end portion, a maximum distance from the axis L2 to the outermost surface along a line perpendicular to the axis L2 increases as the distance along the axis L2 from the axle portion increases, and wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance. view more

A process cartridge according to claim 1, wherein the first end portion of the coupling member is operatively connected to the photosensitive drum via a drum flange and the developing roller is operatively connected to the first end portion via a gear on the drum flange. view more

A process cartridge comprising: a casing; developer contained within the casing; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1; a developing roller having an axis L1′, the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the casing to permit rotation about the axis L1′; and a coupling member having an axis L2, the coupling member including (i) a first end portion operatively connected to the photosensitive drum and the developing roller, (ii) a second end portion including at least one projection that is open to the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion, wherein at least a part of an outermost surface of the second end portion tapers inwardly toward the axis L2 as the distance along the axis L2 towards the connecting portion decreases, and wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance. view more

A process cartridge according to claim 13, wherein the casing includes an opening and at least one protrusion on an external portion of the casing adjacent to the opening.

A process cartridge according to claim 16, wherein the protrusion is provided adjacent to the coupling member with at least part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L away from the developing roller when the coupling member takes the first position. view more

A process cartridge according to claim 13, wherein the first end portion of the coupling member is operatively connected to the photosensitive drum via a drum flange and the developing roller is operatively connected to the first end portion via a gear on the drum flange. view more

A process cartridge comprising: a casing; developer contained within the casing; a photosensitive drum having an axis L1, the photosensitive drum being rotatably supported in the casing about the axis L1; a drum flange provided at an end of the photosensitive drum, the drum flange being rotatable with the photosensitive drum about the axis L1; and a coupling member having an axis L2 and having (i) a first end at least a part of which is positioned within the drum flange, and (ii) a second end including at least one projection, wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance, wherein the coupling member includes a first part, a second part, and a third part, with the second part being between the first part and the third part in a direction of the axis L2, and wherein, for each of the first part, the second part, and the third part, a maximum distance from the axis L2 to an outermost surface of the coupling member as measured along a line perpendicular to the axis L2 is (i) D1 in the first part of the coupling member, (ii) D2 in the second part of the coupling member, and (iii) D3 in the third part of the coupling member, with the distances D1 and D3 being greater than the distance D2. view more

A process cartridge according to claim 1, wherein a part of the drum flange is positioned within the photosensitive drum.

A process cartridge according to claim 1, wherein the distance D is shorter than a distance between the at least one projection and the axis L.

A process cartridge according to claim 1, wherein a maximum distance from the axis L to an outermost surface of at least a part of the second end as measured along a line perpendicular to the axis L increases as the distance along the axis L from the first end increases. view more

A process cartridge according to claim 1, further comprising a developing roller having an axis L′, the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and the developing roller being rotatably supported in the casing to permit rotation about the axis L′, wherein the coupling member is operatively connected to the developing roller. view more

A process cartridge according to claim 1, wherein the casing includes an opening and at least one protrusion on an external portion of the casing adjacent to the opening.

A process cartridge according to claim 6, wherein the protrusion is provided adjacent to the coupling member with at least part of the connecting portion of the coupling member being uncovered to outside of the casing in a direction perpendicular to the axis L away from the developing roller when the coupling member takes the first position. view more

A drum unit usable in a process cartridge, the drum unit comprising: a photosensitive drum having an axis L1; a drum flange provided at an end of the photosensitive drum, a part of the drum flange being positioned within the photosensitive drum; and a coupling member having an axis L2 and having (i) a first end at least a part of which is positioned within the drum flange and (ii) a second end including at least one projection, wherein the coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, with the first distance being greater than the second distance, wherein the coupling member includes a first part, a second part, and a third part, with the second part being between the first part and the third part in a direction of the axis L2, and wherein, for each of the first part, the second part, and third part, a maximum distance from the axis L2 to an outermost surface of the coupling member as measured along a line perpendicular to the axis L2 is (i) D1 in the first part of the coupling member, (ii) D2 in the second part of the coupling member, and (iii) D3 in the third part of the coupling member, with the distances D1 and D3 being greater than the distance D2. view more

A drum unit according to claim 1, wherein the distance D is shorter than a distance between the at least one projection and the axis L.

A drum unit according to claim 1, wherein a maximum distance from the axis L to an outermost surface of at least a part of the second end as measured along a line perpendicular to the axis L increases as the distance along the axis L from the first end increases. view more