WO2011110044A1

WO2011110044A1 - Photosensitve drum assembly and process cartridge

Info

Publication number: WO2011110044A1
Application number: PCT/CN2010/080037
Authority: WO
Inventors: 谢海军
Original assignee: 珠海天威飞马打印耗材有限公司
Priority date: 2010-03-08
Filing date: 2010-12-21
Publication date: 2011-09-15
Also published as: CN201638006U

Abstract

A photosensitive drum assembly (7) and a process cartridge are provided. The photosensitive drum assembly (7) has an upper frame (71) and a lower frame (72) with a photosensitive drum mounted between them. The lower frame (72) is provided with a first identifying part (73, 80). The first identifying part (73, 80) comprises a rear wall (74, 81), wherein a front side of the rear wall (74, 81) is equipped with an end plate (75, 84). The rear wall (74, 81) of the first identifying part (73, 80) is provided with an opened front side. The process cartridge comprises the photosensitive drum assembly (7) and a toner cartridge (6) detachably mounted on the photosensitive drum assembly (7). The photosensitive drum assembly can be equipped with multiple toner cartridges of different types. The process cartridge can be mounted into various laser printers of different types, thus improving the compatibility of the photosensitive drum assembly and the process cartridge.

Description

Photoconductor kit and process cartridge

Technical field

The present invention relates to a process cartridge for a laser printer and a photosensitive drum assembly for use in such a process cartridge. The present invention is based on a Chinese utility model patent application filed on March 8, 2010, the application number of which is incorporated herein by reference.

Background technique

Laser printers are common printing devices that provide great convenience for modern office use. Most of the existing laser printers use a process cartridge that is detachably mounted in a laser printer to provide toner for printing. During the printing process, the toner loaded in the process cartridge is transferred onto the paper as a printing medium to form a desired paper. Patterns and text.

A conventional type of process cartridge is shown in FIG. 1. The process cartridge is composed of a toner cartridge 1 and a photosensitive drum assembly 2. The toner cartridge 1 has a casing 11 which encloses a cavity for accommodating toner. There are components such as the developing roller 12. The toner cartridge 1 is detachably mounted into the photosensitive drum unit 2, and constitutes a process cartridge with the photosensitive drum unit 2. The photosensitive drum unit 2 has an upper frame 21 and a lower frame 23, and the upper frame 21 is mounted above the lower frame 23, and a photosensitive drum 22 is mounted between the upper frame 21 and the lower frame 22.

Referring to Figures 2 and 3, the lower frame 23 of the photosensitive drum unit 2 is provided with two

first identification portions

24 and 30, the first identification portion 24 has a rear wall 29, and the front side of the rear wall 29 is provided with two forward sides. The end plates 25 are arranged in parallel, and four parallel partitions 26 are arranged between the end plates 25, and a baffle 27 is connected between the adjacent partitions 26 and between the partitions 26 and the end plates 25, and The partition 26, the rear wall 29 and the baffle 27 enclose a recess 28. As shown in FIG. 3, the first identification portion 24 has three recesses 28, and the three recesses 28 are each disposed on a side away from the center line of the lower frame 23.

In the direction of the side of the center line of the lower frame 23, there is no baffle 27 between the adjacent two partition plates 26, the partition plate 26 and the end plate 25, that is, the adjacent partition plates 26 and the openings between them are open grooves.

As shown in FIG. 2, the rear end of the toner cartridge 1 is provided with an identification rib 13, and when the toner cartridge 1 is loaded into the lower frame 23, the identification rib 13 is inserted into the opening groove of the first identification portion 24. Only the toner cartridge 1 in which the identification rib 13 matches the position of the opening groove of the lower frame 23 can be correctly loaded into the lower frame 23.

Similarly, the other first identifying portion 30 is also provided with a rear wall 31. The rear wall 31 is provided with an end plate 32 parallel to each other and a plurality of partition plates 33. The baffle plate 34 is provided with a baffle 34 in front of the partition plate 33, and forms three A groove 35 and two open slots 36. Another set of identification ribs 14 are provided on the toner cartridge 1, and the identification ribs 14 can be inserted into the opening grooves 36 to recognize the toner cartridge 1 and the photosensitive drum unit 2. Thus, the two sets of

identification ribs

13, 14 on the toner cartridge 1 and the two first identification portions of the lower frame 23 are identified to ensure proper use of the toner cartridge 1 and the photosensitive drum assembly 2.

Moreover, the rear side of the

rear wall

29, 31 is further provided with two

second identification portions

40, 50. The second identification portion 40 includes two end plates 41 arranged in parallel, and two parallel plates are provided between the end plates 41. A partition 42 is provided, and a baffle 43 is provided at the rear end of the partition 42 to form a plurality of continuously distributed grooves 44.

Similarly, the other second identifying portion 50 also has two parallel end plates 51. A plurality of parallel baffles 52 are disposed between the end plates 51, and a baffle 53 is disposed at the rear end of the baffle 52 to form a plurality of baffles 53. A groove 54. Unlike the second recognition portion 40, the second identification portion 50 is provided with an opening groove 56 at one end away from the center line of the lower frame 23. After the photosensitive drum unit 2 is loaded into the laser printer, the second identifying portion 50 will be engaged with the bump on the laser printer, and the bump will be inserted into the opening groove 56 of the second identifying portion 50, and the second identifying portion 40 has no open groove. There is no corresponding bump in the corresponding position of the laser printer, so that the process cartridge can be installed in position relative to the laser printer and perform subsequent printing work.

Referring to Fig. 4, another conventional process cartridge is composed of a toner cartridge 101 and a photosensitive drum assembly 120, and the toner cartridge 101 is detachably housed in the lower frame of the photosensitive drum assembly 120. The lower frame of the photosensitive drum assembly 120 is provided with two

first identification portions

121, 123, and two

central slots

122, 124 are provided in the middle of each of the

first identification portions

121, 123. The toner cartridge 101 is provided with two sets of

identification ribs

111 and 112, which can be inserted into the

opening grooves

122 and 124 of the

first identification portions

121 and 123, respectively, to realize the identification of the photosensitive drum assembly 120 by the toner cartridge 101. Comparing Fig. 3 with Fig. 4, the positions of the first identification opening grooves of the two photosensitive drum assemblies in the lateral direction are different.

Moreover, the photosensitive drum assembly 120 is further provided with two

second identifying portions

131, 133, wherein the central portion of the second identifying portion 131 is provided with an opening groove 132 for engaging with a bump on the laser printer. Moreover, the position of the second identification portion opening groove 132 of the second process cartridge is also different from the position of the second processing portion opening groove of the first process cartridge in the lateral direction.

Referring to Fig. 5, the conventional third process cartridge is composed of a toner cartridge 141 and a photosensitive drum assembly 150, and the toner cartridge 141 is detachably housed in the lower frame of the photosensitive drum assembly 150. The lower frame of the photosensitive drum assembly 150 is provided with two first identifying

portions

151 and 153, and each of the first identifying

portions

151, 153 is provided with

open grooves

152, 154, and two sets of

identification ribs

142, 143 of the toner cartridge 141. The toner cartridges 141 are recognized by the toner cartridge 141 by being inserted into the

opening grooves

152, 154 of the two first identifying

portions

151, 153, respectively.

Moreover, the lower frame of the photosensitive drum assembly 150 is also provided with two

second identifying portions

155, 156, wherein the second identifying portion 156 is provided with an opening groove 157 in the middle for cooperation with the laser printer bump.

Referring to Fig. 6, a conventional fourth process cartridge is composed of a toner cartridge 160 and a photosensitive drum assembly 170, wherein the toner cartridge 160 is detachably housed in the photosensitive drum assembly 170, and the rear end of the toner cartridge 160 is provided. The two groups identified

ribs

161, 162. The lower frame of the photosensitive drum assembly 170 is provided with two first identifying

portions

171, 173. Each of the first identifying

portions

171, 173 is provided with an

open slot

172, 174, and the

identification strips

161, 162 of the toner cartridge 160 are respectively The opening of the photosensitive drum unit 170 by the toner cartridge 160 is realized by being inserted into the

opening grooves

172, 174.

The photosensitive drum assembly 170 is further provided with two

second identifying portions

175, 177, and the second identifying portion 175 is provided with an opening groove 176 for performing an identification fit with the bump on the laser printer.

technical problem

The only difference in the structure of the photosensitive drum assembly in the above various process cartridges is that the lateral positions of the first identification portion and the second identification portion opening groove are different, so that a specific model of the toner cartridge is loaded into the corresponding type of photosensitive drum assembly. The inside and specific type of process cartridges are loaded into the corresponding model of the laser printer. In this way, when the process cartridge manufacturer produces the process cartridge, it is necessary to design and produce the photosensitive drum assembly with different opening positions of the first identification portion for different types of toner cartridges, and design and manufacture the second identification portion for different types of laser printers. The processing box with different opening positions not only causes inconvenience to production and storage, but also brings inconvenience to sales, purchase and replacement. Therefore, it is designed and manufactured to be compatible with various types of toner cartridges and various types of laser printers. Drum components have become the consensus of many process cartridge manufacturers.

Technical solution

The main object of the present invention is to provide a photosensitive drum assembly that can be applied to a plurality of different types of toner cartridges;

Another object of the present invention is to provide a process cartridge that can be applied to a variety of different types of laser printers.

In order to achieve the above main object, the photosensitive drum assembly provided by the present invention has an upper frame and a lower frame, the upper frame is fixed above the lower frame, and a photosensitive drum is mounted between the upper frame and the lower frame, and the lower frame is provided with a first identification portion. The first identification portion has a rear wall, and the front side of the rear wall is provided with an end plate, wherein the front side of the rear wall of the first identification portion is open.

It can be seen from the above scheme that the front wall of the first identification part is not provided with a baffle, and the identification rib of the toner cartridge can be inserted into the opening in front of the rear wall of the first identification part, and the photosensitive drum assembly can be loaded with a plurality of different types of carbon. Powder box.

In a preferred embodiment, the front side of the rear wall of the first identification portion is provided with a plurality of partition plates disposed in parallel with each other, and an open groove is formed between all the adjacent two partition plates.

It can be seen that the first identification portion partitions are open slots, and no matter which position the toner cartridge identification rib is disposed, it can be inserted into the open slot of the first identification portion, that is, a plurality of toner cartridges can be Mounting on the photoconductor kit greatly improves the compatibility of the photoconductor kit.

In a further aspect, the lower frame is further provided with a second identification portion, and the second identification portion has two end plates arranged in parallel, and the area between the end plates is a communication area. Thus, the second identifying portion is not provided with the spacer and the groove, and can be engaged with the second identifying portion regardless of the position at which the bump of the laser printer is disposed. It can be seen that the process cartridge can be mounted on a variety of different types of laser printers to improve the compatibility of the process cartridge.

In order to achieve the above other object, the present invention provides a process cartridge including a photosensitive drum assembly and a toner cartridge detachably incorporated in the photosensitive drum assembly, the photosensitive drum assembly having an upper frame and a lower frame, the upper frame being fixed above the lower frame And a photosensitive drum is disposed between the upper frame and the lower frame, the lower frame is provided with a first identification portion, the first identification portion has a rear wall, and the front side of the rear wall is provided with an end plate, wherein the rear wall of the first identification portion The front side is open.

It can be seen that although a plurality of different types of toner cartridge identification ribs have different positions, they can be inserted into the first identification opening groove of the photosensitive drum assembly, that is, the photosensitive drum of the process cartridge can be installed with a plurality of different types of carbon. The toner cartridge improves the compatibility of the photosensitive drum assembly.

In a preferred embodiment, the lower frame of the photosensitive drum assembly is further provided with a second identification portion, and the second identification portion has two end plates arranged in parallel, and the area between the end plates is a communication area.

It can be seen that since the second identification portion of the photosensitive drum assembly is a wide open slot, the bumps of different types of laser printers can be inserted into the second identification portion, that is, the process cartridge can be mounted to different types of laser printers. In the process, the compatibility of the process cartridge is greatly improved.

DRAWINGS

Figure 1 is an exploded view showing the structure of a conventional first process cartridge;

Figure 2 is an exploded perspective view showing another view of the first type of process cartridge;

Figure 3 is a partial enlarged view of still another view of the photosensitive drum assembly of Figure 2;

Figure 4 is an exploded view showing the structure of a conventional second processing cartridge;

Figure 5 is a structural exploded view of a conventional third process cartridge;

Figure 6 is a structural exploded view of a conventional fourth processing cartridge;

Figure 7 is a structural exploded view of an embodiment of the process cartridge of the present invention;

Figure 8 is an enlarged plan view showing another embodiment of the photosensitive drum module of the present invention.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiments of the invention

Referring to Fig. 7, a process cartridge according to the present invention is constituted by a photosensitive drum unit 7 and a toner cartridge 6, and a toner cartridge 6 is detachably housed in a photosensitive drum unit 7, and the toner cartridge 6 has a casing 65 and a casing. The body 65 encloses a cavity for accommodating the toner, and the toner cartridge 6 is also mounted with a developing roller 66 and the like. The rear end of the casing 61 of the toner cartridge 6 is further provided with two sets of

identification ribs

61, 62, and each set of

identification ribs

61, 62 has two ribs protruding rearward.

The photosensitive drum module 7 according to the present invention has an upper frame 71 and a lower frame 72, and the upper frame 71 is fixed to the lower frame 72, and a photosensitive drum (not visible in the drawing) is mounted between the upper frame 71 and the lower frame 72. The lower frame 72 is provided with two first identifying

portions

73, 80, and the specific structure of the first identifying

portions

73, 80 is as shown in FIG.

The first identification portion 73 has a rear wall 74. The rear wall 74 is provided with an end plate 75 at one end of the center line, and a plurality of partition plates 76 are arranged in the direction away from the center line. The end plate 75 and the partition plate 76 are arranged in parallel with each other. A plurality of open slots 77 are defined between the plate 75 and the partition plate 76 and between the adjacent partition plates 76, that is, no baffle is disposed in front of the partition plate 76, that is, between the end plate 75 and the partition plate 76, adjacent to each other. There are open slots 77 between the two partitions 76.

Similarly, the other first identifying portion 80 is also provided with a rear wall 81. The rear wall 81 is provided with an end plate 84 at one end of the center line, and a plurality of partition plates 82 are arranged in the direction away from the center line, and the end plate 84 and the partition plate are sequentially disposed. 82 is disposed in parallel, and an open groove 83 is formed between the end plate 84 and the partition 82 and between the adjacent two partition plates 82, that is, no baffle is disposed in front of the partition plate 84.

Thus, regardless of the position in which the

identification ribs

61, 62 of the toner cartridge 6 are disposed in the lateral direction, they can be inserted into the opening grooves 77, 83 of the

first identification portions

73, 80, that is, the photosensitive drum assembly 7 can be mounted in various kinds. Different types of toner cartridges 6 improve the compatibility of the photosensitive drum assembly 7.

Referring back to Figure 7, the lower frame 72 of the photosensitive drum unit 7 is further provided with two

second identification portions

90, 95. The second identification portion 90 has a rear wall 91, and the rear side 91 is provided with two parallel end portions on the rear side. The plate 92, the area between the two end plates 92, is an open groove 94 having a wide width, and no partition is provided in the middle.

Similarly, the second identification portion 95 is also provided with a rear wall 96. The rear side of the rear wall 96 is provided with two parallel end plates 97. The two end plates 97 are also connected regions, and no partition is provided. An open groove 99 having a wide width is formed.

It can be seen that the opening

grooves

94, 99 of the second identification portion of the photosensitive drum assembly 7 are wide, and when the process cartridge is loaded into a laser printer of a different type, the projection of the laser printer can be inserted into the opening

grooves

94, 99, that is, The process cartridge can be used in a variety of different types of laser printers to improve the compatibility of the process cartridge.

Of course, the above solution is only a preferred embodiment of the present invention. In practical applications, the first identification portion of the photosensitive drum assembly 2 can also be provided with only the rear wall and the end plate, and all the partitions on the front side of the rear wall can be removed. The object of the invention is achieved.

Finally, it should be emphasized that the present invention is not limited to the above embodiments, and changes such as the number of the first identification portion partitions and the number of open slots, the change in the opening width of the second identification portion, and the like should also be included in the protection of the present invention. Within the scope.

Industrial applicability

The photosensitive drum assembly of the present invention has no baffle in front of the rear wall of the first identification portion, and the identification rib of the toner cartridge can be inserted into the opening in front of the rear wall of the first identification portion, so that the photosensitive drum assembly can be applied to a plurality of different types of toner. The cartridge greatly increases the range of application of the photosensitive drum assembly, thereby reducing manufacturing and use costs. The second identification portion of the photosensitive drum assembly has two end plates arranged in parallel, and a region between the end plates is a communication region. Thus, the second identifying portion is not provided with the spacer and the groove, and can be engaged with the second identifying portion regardless of the position at which the bump of the laser printer is disposed. It can be seen that the process cartridge can be mounted on a variety of different types of laser printers to improve the compatibility of the process cartridge.

Claims

Photoconductor kit, including

An upper frame and a lower frame, the upper frame is fixed on the lower frame, and a photosensitive drum is mounted between the upper frame and the lower frame;

The lower frame is provided with a first identification portion, the first identification portion has a rear wall, and the front side of the rear wall is provided with an end plate;

It is characterized by:

The front side of the rear wall of the first identification portion is open.
A photosensitive drum module according to claim 1, wherein:

The front side of the rear wall is provided with a plurality of partition plates arranged in parallel with each other, and an open groove is formed between all the adjacent two partition plates.
A photosensitive drum module according to claim 1 or 2, wherein:

The number of the first identifying portions is two, and an open slot is formed between all adjacent partitions of each of the first identifying portions.
A photosensitive drum module according to claim 1 or 2, wherein:

The lower frame is further provided with a second identification portion having two end plates arranged in parallel, and a region between the end plates is a communication region.
The photosensitive drum module according to claim 4, wherein:

The number of the second identifying portions is two, and the end plates of each of the second identifying portions are connected regions.
Processing box, including

a photosensitive drum assembly and a toner cartridge detachably loaded in the photosensitive drum assembly, the photosensitive drum assembly having

An upper frame and a lower frame, the upper frame is fixed on the lower frame, and a photosensitive drum is mounted between the upper frame and the lower frame;

The lower frame is provided with a first identification portion, the first identification portion has a rear wall, and the front side of the rear wall is provided with an end plate;

It is characterized by:

The front side of the rear wall of the first identification portion is open.
The process cartridge according to claim 6, wherein:

The front side of the rear wall is provided with a plurality of partition plates arranged in parallel with each other, and an open groove is formed between all the adjacent two partition plates.
A process cartridge according to claim 6 or 7, wherein:

The number of the first identifying portions is two, and an open slot is formed between all adjacent partitions of each of the first identifying portions.
A process cartridge according to claim 6 or 7, wherein:

The lower frame is further provided with a second identification portion having two end plates arranged in parallel, and a region between the end plates is a communication region.
The process cartridge according to claim 9, wherein:

The number of the second identifying portions is two, and the end plates of each of the second identifying portions are connected regions.