WO2006026909A1 - Developer power container - Google Patents

Abstract

A developer power container for electrophotographic image forming device, comprises a container containing carbon power, a developer power discharge port provided on a bottom of the container and its opening is downward, a sealing block slidably combined with a pair of guide rails formed by edges of a flange of the developer power discharge port to open or close the developer power discharge port, the sealing block has a sliding groove which cooperates with the guide rails and its opening is upward, and a slot which limits the position of the sealing block and its opening is downward. The developer power container has a relative simple structure and a low malfunction occurring rate in processing and makes the cost of manufacturing the developer container lower.

Description

 Developer toner cartridge

 The present invention relates to a component of an image forming apparatus to which an electrophotographic method is applied, and more particularly to a developing toner cartridge for an image forming apparatus to which an electrophotographic method is applied. Background technique

 An image forming apparatus using an electrophotographic method, such as an electrophotographic copying machine or a digital copying machine and an integrated printer, each of which is provided with a developing device for developing an electrostatic latent image formed on a photosensitive drum, and the developing device transfers the developing powder to the photosensitive drum On the electrostatic latent image. The desired developing powder is usually supplied from a developing toner cartridge which is detachably mounted in the image forming apparatus, and when the developing powder is exhausted, a new developing toner cartridge is replaced.

 In the Chinese Patent Application Specification No. 1356600 A, a developer cartridge, that is, a developer cartridge, has a container body having a powder outlet; a sealing block mounted on the container body, which reciprocates To open and close the powder outlet. The toner cartridge is detachably mounted to a mounting portion of the image forming apparatus having a toner replenishing port, the mounting portion including a receiving top surface provided with the replenishing port, and having a first portion on the top surface The toner passes through the flexible complementary mouth seal of the mouth, as well as the stop wall and a pair of guide walls. The powder outlet of the powder box is disposed on the support wall of the bottom surface of the container body, and a flexible powder outlet seal having a second toner passage opening is disposed outside the wall; the sealing block further includes a third toner passing through The mouth has a top portion that abuts the powder outlet seal. When the container body is inserted in a direction perpendicular to the reciprocating side of the sealing block, both ends of the sealing block are inserted into the guiding wall until the stopping wall is stopped to complete the insertion, at this time, the The toner replenishing port, the first toner passing port, and the third toner pass through the port; then, the container body moves in the mounting direction, and cooperates with the mounting portion to finally make the toner replenishing port A toner passes through the mouth, the third toner passes through the mouth, the second toner passes through the mouth, and the powder outlet is docked, so that the powder supply passage is unblocked.

 In the above-mentioned disclosed toner cartridge, the powder outlet sealing structure is relatively complicated, and a developing toner cartridge having a simple powder outlet structure and excellent sealing effect has been designed. Summary of the invention

 SUMMARY OF THE INVENTION A primary object of the present invention is to provide a developing toner cartridge having a relatively simple powder outlet structure.

1

Confirmation The solution adopted by the present invention is that the developing toner cartridge is provided with a sealing block which is slidably engaged with the powder edge flange to open or close the powder outlet. The sealing block has a slot that is open upwardly in sliding engagement with the powder flange flange rail, and a slot that is open downward to limit the sealing block when the developer cartridge is mounted to the image forming apparatus. DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective schematic view showing a mounting portion of a developing toner cartridge on an image forming apparatus not according to the present invention, which is indicated by a double-dotted line;

 Figure 2 is a perspective view of the developing toner cartridge;

 Figure 3 is a perspective view of the other direction of the developing toner cartridge;

 Figure 4 is a bottom view of the sealing block of the developing powder box;

 Figure 5 is a side view of the developer cartridge without a sealing block;

 Figure 6 is a partial front elevational view of the developer cartridge without a sealing block;

 Figure 7 is a partial side view showing the sealing block mounted outside the powder outlet of the developing toner cartridge;

 Figure 8 is a partial front elevational view showing the sealing block mounted outside the powder outlet of the developing toner cartridge;

 Figure 9 is a cross-sectional view taken along line A-A of Figure 8;

 Figure 10 is a side elevational view of the developer cartridge on the mounting portion before being loaded into the image forming apparatus;

 Figure 11 is a partial perspective view showing the mounting container mounted on the mounting portion shown in Figure 1;

 Figure 12 is a plan view of Figure 11 taken along the lower surface of the flange;

 Figure 13 is a partial perspective view showing the mounting container mounted on the mounting portion shown in Figure 1;

 Figure 14 is a plan view of Figure 13 taken along the lower surface of the flange;

 Figure 15 is a perspective view of a sealing block with a seal;

 Figure 16 is a perspective view of the sealing block;

 Figure 17 is a side view of the sealing block;

 Figure 18 is a perspective view of the other direction of the sealing block. detailed description

An embodiment made in accordance with the present invention and its accompanying drawings are further described in detail below. 1 is a schematic view of a mounting portion of an image forming apparatus 100 for mounting a toner cartridge, mainly comprising a positioning block 1, a powder inlet 2, an elastic seal 3, a mounting table 4, a rear end surface 5, and a positioning hole provided thereon. 6 and power transmission holes 7, 8.

 2 is a perspective view of the developing toner cartridge 200. The toner cartridge 200 has a casing 20, a flange 21 surrounding the powder outlet, and a sealing block 11 slidable relative to the flange. The structure of the toner agitating device and the like inside the casing 20 is the same as that of the prior art, and will not be described again.

 As shown in FIG. 3, at one end of the developing toner cartridge 200, two positioning posts 41 that cooperate with the positioning holes 6 on the mounting portion of the image forming apparatus, and a power receiving end 42 that cooperates with the power transmitting holes 7, 8 on the mounting portion are provided. , 43.

 The mounting process of the developing toner cartridge 200 to the image forming apparatus mounting portion can be referred to Figs. 1, 2, and 3. First, the developing toner cartridge 200 is inserted in the Xa direction shown in Fig. 1 to the card slot and positioning on the sealing block 11. The block 1 is fully engaged (see Fig. 11), and the position of the developing toner cartridge relative to the mounting portion is referred to as the original position of the developing toner cartridge 200, that is, the position at which the sealing block 11 closes the powder discharging port of the developing toner cartridge; Under the action of the internal mechanism of the apparatus 100, the developing toner cartridge 200 is moved in the Ya direction shown in Fig. 1, to the positioning post 41 of the developing toner cartridge 200 and the power receiving ends 42, 43 and the positioning holes 6 and the power on the end faces 5 of the image forming apparatus, respectively. The transfer holes 7, 8 are fully mated. We refer to this position of the developing toner cartridge 100 with respect to the mounting portion of the image forming apparatus as the working position, that is, the position at which the sealing block 11 releases the sealing of the powder discharging port. In this process, the positional change between the sealing block 11' and the flange 21 and the formation of the powder supply passage will be described later.

 The detaching process of the developing toner cartridge 200 from the image forming apparatus mounting portion is reversed from the above-described mounting process, and the moving direction of the developing cartridge 200 is shown as Yb and Xb as shown in Fig. 1.

 Referring to Figures 4, 5 and 6, the powder outlet 22 of the toner cartridge 200 is located at the bottom of the casing 20, and the powder outlet 22 is located in the rectangular flange 21. The two longitudinal sides of the flange 21 having the upper and lower surfaces 21b and 21a respectively form a pair of guide rails 24, and the outer side of each of the guide rails 24 is provided with an outward projection 27.

 Referring to Figure 7, Figure 8 and Figure 9, the sealing block 11 is installed outside the powder outlet 22, and the powder outlet 22 is sealed. The thickness of the seal 30 fixed in the bottom wall of the sealing block 11 is slightly larger than the difference between the space distance between the walls 13 and 14 (see Fig. 16) minus the thickness of the flange 21, so that the sealing member 30 is pressed against the lower surface of the flange. 21a, to maintain a good seal. At this time, the above-mentioned two projections 27 cooperate with the corresponding recesses 19 in the sliding grooves of the sealing block 11, and the sealing block 11 is locked on the flange (see Fig. 12).

 Referring to Fig. 10, Fig. 11, Fig. 10, the developing toner cartridge 200 is placed on the mounting table 4 in a state to be inserted. Fig. 11 shows a state in which the developing container 200 is completely inserted, and the card slot on the sealing block 11 is engaged with the positioning block 1.

Next, referring to Fig. 12, Fig. 13, and Fig. 14, the positional relationship between the sealing block 11 and the flange 21 during the movement of the developing toner cartridge 200 from the original position to the working position on the mounting table 4 will be described. In the original position, the sealing block 11 is restrained from moving in the Ya direction by the engagement of the card slot with the positioning block 1, and at this time, the image forming apparatus inlet port 2 is downstream of the powder box moving direction of the powder outlet 22 (see FIG. 12), and the powder outlet 22 is sealed by the sealing block 11 (seal 30). With the movement of the toner cartridge 200 (see Fig. 13), the powder outlet 22 is moved toward the powder inlet 2 of the image forming apparatus, and when the openings of the two are overlapped, the powder outlet 22 is gradually opened until the opening areas of the two are completely Overlap, at this time, the lower surface 21a of the flange 21 abuts against the sealing member 3, and the powder supply passage from the developing toner cartridge 200 to the image forming apparatus 100 is completely opened, as shown in Fig. 14.

 Finally, the specific structure of the sealing block 11 will be described. Referring to Figures 15, 16, 17, and 18, the seal member 30 is secured to the inside of the bottom wall 14, and the walls 12, 13 and the bottom wall 14 of the seal block 11 form a chute that slidably engages a pair of rails 24, the wall 15 , 16, 17 and the wall 18 constitute a card slot, wherein the wall 15, 18 is restrained in the Ya and Yb directions when the image forming apparatus is loaded, and the wall 17 stops the powder box 200 in the Xa direction. Bit. Industrial applicability

 The invention adopts the sealing block 11 with simple structure, and is safe and reliable when the powder discharging port of the developing toner cartridge is opened and closed, the failure rate is low, and the cost of the developing toner cartridge can be lowered.

Claims

Claim 1, the developer cartridge, including  a box of toner inside the container;  The bottom of the box body has a powder outlet opening downward;  a pair of guide rails formed on the edge of the flange of the powder outlet opening to open or close the sealing block of the powder outlet;  It is characterized by:  The seal block has an upwardly-oriented chute that engages the rail and an open-down slot for restricting the seal block. 2. The developing toner cartridge according to claim 1, wherein:  The sealing block is provided with an elastic sealing member sealing the powder discharging port in the bottom wall of the sliding groove. 3. The developing toner cartridge according to claim 1 or 2, wherein:  a protrusion is disposed on an outer side surface of each of the guide rails, and a corresponding position of the sliding block of the sealing block is disposed to cooperate with the protrusion to ensure that the sealing block is in the original state The depression of the flange.