PHOTOSENSITIVE UNIT AND DEVELOPER CARTRIDGE
First Claim
1. A photosensitive unit comprising:
- a developer cartridge comprising a developing agent carrier carrying a developing agent and a casing supporting the developing agent carrier and accommodating the developing agent;
a photosensitive body disposed so that the developing agent carrier is brought into contact therewith by pressing and developed with an electrostatic latent image by the developing agent fed from the developer carrier; and
a cartridge attaching portion to which the developer cartridge is detachably attached, whereinthe casing comprises an elastic member, a pressing member for pressing the elastic member toward the developing agent carrier so that the developing agent carrier is pressed toward the photosensitive body, and a fitting member provided on the pressing member, andthe cartridge attaching portion comprises a fit portion which is fitted with the fitting member so that the pressing member presses the elastic member toward the developing agent carrier for maintaining a pressing state of the pressing member to the elastic member by this fitting.
1 Assignment
0 Petitions
Accused Products
Abstract
A photosensitive unit is described. A photosensitive unit may include a developer cartridge including a developing agent carrier and a casing for supporting the developer carrier; a photosensitive body disposed so that the developing agent carrier is brought into contact therewith by pressing; and a cartridge attaching portion to which the developer cartridge is detachably attached. The casing includes an elastic member, a pressing member for pressing the elastic member so that the developing agent carrier is pressed toward the photosensitive body, and an fitting member provided on the pressing member. The cartridge attaching portion includes a fit portion which is fitted by the fitting member so that the pressing member presses the elastic member toward the developing agent carrier for maintaining the pressing state of the pressing member to the elastic member by the fitting.
24 Citations
32 Claims
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1. A photosensitive unit comprising:
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a developer cartridge comprising a developing agent carrier carrying a developing agent and a casing supporting the developing agent carrier and accommodating the developing agent; a photosensitive body disposed so that the developing agent carrier is brought into contact therewith by pressing and developed with an electrostatic latent image by the developing agent fed from the developer carrier; and a cartridge attaching portion to which the developer cartridge is detachably attached, wherein the casing comprises an elastic member, a pressing member for pressing the elastic member toward the developing agent carrier so that the developing agent carrier is pressed toward the photosensitive body, and a fitting member provided on the pressing member, and the cartridge attaching portion comprises a fit portion which is fitted with the fitting member so that the pressing member presses the elastic member toward the developing agent carrier for maintaining a pressing state of the pressing member to the elastic member by this fitting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A developer cartridge detachably attachable to a photosensitive unit having a photosensitive body, comprising:
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a developing agent carrier for carrying a developing agent which is fed to the photosensitive body; a casing supporting the developing agent carrier and accommodating a developing agent; an elastic member provided in the casing; a pressing member provided in the casing for pressing the elastic member toward the developing agent carrier so that the developing agent carrier is pressed toward the photosensitive body; and a fitting member provided on the pressing member, fitted to the photosensitive unit so that the pressing member presses the elastic member toward the developing agent carrier, and maintaining a pressing state of the pressing member to the elastic member by this fitting. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A developer cartridge comprising:
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a casing for accommodating a developing agent; a developing agent carrier provided on one end portion in the casing for carrying the developing agent; an elastic member provided on the other end portion which is opposite to the one end portion in the casing; a pressing member provided on the other end portion in the casing for pressing the elastic member toward the developing agent carrier; and a fitting member provided on the pressing member so as to protrude outward in an axial direction of the developing agent carrier and fitted to an other member to maintain a pressing state of the pressing member to the elastic member. - View Dependent Claims (22, 23, 24, 25)
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26. A developer cartridge comprising:
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a developing roller carrying a developing agent; a developer frame accommodating the developing agent, formed with an opening on one end side, and rotatably supporting the developing roller in the vicinity of the opening; an elastic member provided on other end side in the developer frame; a grip provided to be pivotable between a position where the elastic member is pressed and a position where the elastic member is not pressed with a portion of the developer frame as a spindle, wherein the grip comprises a pressing plate which can be opposed to the other end side of the developer frame, a supporting plate extending from both end edges of the pressing plate in a longitudinal direction of the developing roller toward the one end side, and a projection protruding from an outside surface in a longitudinal direction of the developing roller in the vicinity of the one end side of the supporting plate. - View Dependent Claims (27, 28, 29, 30)
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31. A developer cartridge comprising:
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a developing roller carrying a developing agent; a developer frame accommodating the developing agent, formed with an opening on one end side, and rotatably supporting the developing roller in the vicinity of the opening; and a grip provided on other end side in the developer frame, wherein the grip comprises a pressing plate which can be opposed to the other end side of the developer frame, a supporting plate extending from both end edges of the pressing plate in a longitudinal direction of the developing roller toward the one end side, a projection protruding from an outside surface in a longitudinal direction of the developing roller in the vicinity of the one end side of the supporting plate, and an elastic member formed in the pressing plate so that the elastic member can be opposed to the other end side of the developer frame, and the grip is provided to be pivotable between a position where the elastic member presses the other end side of the developer frame and a position where the elastic member does not press the other end side of the developer frame with a portion of the developer frame as a spindle.
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32. A developer cartridge comprising:
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a developing roller carrying a developing agent; a developer frame accommodating the developing agent, formed with an opening on one end side, and rotatably supporting the developing roller in the vicinity of the opening; and a grip provided on other end side in the developer frame to be pivotable between a position close to the other end side of the developer frame and a position spaced from the other end side of the developer frame with a portion of the developer frame as a spindle, wherein the grip comprises a pressing plate which can be opposed to the other end side of the developer frame, an elastic member extending from both end edges of the pressing plate in a longitudinal direction of the developing roller toward the one end side, and a projection protruding outward in a longitudinal direction of the developing roller in the vicinity of the one end side of the elastic member.
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Specification