摘要:
The developing apparatus of the present invention includes a developer holding member for supplying a developer including a toner and a carrier onto the surface of an electrostatic latent image holding member; first developer transporter for transporting the developer in a first direction, the first developer transporter being disposed in a first developer transport path; second developer transporter for transporting the developer in a second direction that is opposite to the first direction and supplying the developer to the developer holding member, the second developer transporter being disposed in a second developer transport path; a magnet roller for drawing up the developer that has been transported through the second developer transport path into the first developer transport path; and an inclined surface that is disposed in contact with or close to the surface of the magnet roller and that is inclined such that the height thereof decreases along the first direction, wherein the developer that is held on the magnet roller is detached by the inclined surface, and the detached developer is transported in the first direction, and wherein a space in the first developer transport path that surrounds the magnet roller has a portion having a cross-sectional open area larger than that of a space in the first developer transport path that surrounds the first developer transporter.
摘要:
The present invention provides a developing apparatus that can effectively prevent generation of a ghost due to poor detachment of a developer after development, and generation of unevenness in density between a left part and a right part of an image region due to lack of an amount of the developer transported. The developing apparatus satisfies the relationship r+R≦d≦3r+R where r denotes a rotational radius of a second developer transporting screw, R denotes a rotational radius of a development roller, and d denotes a center distance between the second developer transporting screw and the development roller. The developing apparatus also satisfies the relationship M0≧(mg0×v×l)/0.02 where mg0 (g/mm2) denotes an amount of a toner per unit area that is supplied from the development roller to an electrostatic latent image having 100% image coverage which is formed on a photosensitive drum, v (mm/s) denotes a rotational peripheral velocity of the photosensitive drum, l (mm) denotes a maximum printing width on the photosensitive drum, and M0 (g/s) denotes an amount of the developer transported per unit time by the second developer transporting screw in a second developer transport direction.
摘要翻译:本发明提供一种显影装置,其能够有效地防止由于显影后的显影剂的分离不良而产生重影,并且由于缺少量的图像区域的图像区域的左侧部分和右侧部分之间的密度不均匀性的产生 开发商运送。 显影装置满足关系<?in-line-formula description =“In-line Formulas”end =“lead”?> r + R <= D <= 3R + R <?in-line-formula description =“In 其中r表示第二显影剂传送螺杆的旋转半径,R表示显影辊的旋转半径,d表示第二显影剂传送螺丝和显影辊之间的中心距离 。 显影装置还满足关系<?in-line-formula description =“In-line Formulas”end =“lead”?> M0> =(mg0xvxl)/0.02 <?in-line-formula description =“In-line 公式“end =”tail“?>其中,mg0(g / mm 2)表示从显影辊供给到具有100%图像覆盖率的静电潜像的每单位面积的调色剂量 其形成在感光鼓上,v(mm / s)表示感光鼓的旋转圆周速度,l(mm)表示感光鼓上的最大打印宽度,M0(g / s)表示感光鼓的旋转圆周速度, 通过第二显影剂输送螺杆在第二显影剂输送方向上每单位时间输送的显影剂。
摘要:
The developing apparatus of the present invention includes a developer holding member for supplying a developer including a toner and a carrier onto the surface of an electrostatic latent image holding member; first developer transporter for transporting the developer in a first direction, the first developer transporter being disposed in a first developer transport path; second developer transporter for transporting the developer in a second direction that is opposite to the first direction and supplying the developer to the developer holding member, the second developer transporter being disposed in a second developer transport path; a magnet roller for drawing up the developer that has been transported through the second developer transport path into the first developer transport path; and an inclined surface that is disposed in contact with or close to the surface of the magnet roller and that is inclined such that the height thereof decreases along the first direction, wherein the developer that is held on the magnet roller is detached by the inclined surface, and the detached developer is transported in the first direction, and wherein a space in the first developer transport path that surrounds the magnet roller has a portion having a cross-sectional open area larger than that of a space in the first developer transport path that surrounds the first developer transporter.
摘要:
The present invention provides a developing apparatus that can effectively prevent generation of a ghost due to poor detachment of a developer after development, and generation of unevenness in density between a left part and a right part of an image region due to lack of an amount of the developer transported. The developing apparatus satisfies the relationship r+R≦d≦3r+R where r denotes a rotational radius of a second developer transporting screw, R denotes a rotational radius of a development roller, and d denotes a center distance between the second developer transporting screw and the development roller. The developing apparatus also satisfies the relationship M0≧(mg0×v×l)/0.02 where mg0 (g/mm2) denotes an amount of a toner per unit area that is supplied from the development roller to an electrostatic latent image having 100% image coverage which is formed on a photosensitive drum, v (mm/s) denotes a rotational peripheral velocity of the photosensitive drum, l (mm) denotes a maximum printing width on the photosensitive drum, and M0 (g/s) denotes an amount of the developer transported per unit time by the second developer transporting screw in a second developer transport direction.
摘要翻译:本发明提供一种显影装置,其能够有效地防止由于显影后的显影剂的分离不良而产生重影,并且由于缺少量的图像区域的图像区域的左侧部分和右侧部分之间的密度不均匀性的产生 开发商运送。 显影装置满足关系<?in-line-formula description =“In-line Formulas”end =“lead”?> r + R <= D <= 3r + R <?in-line-formula description =“In 其中r表示第二显影剂传送螺杆的旋转半径,R表示显影辊的旋转半径,d表示第二显影剂传送螺丝和显影辊之间的中心距离 。 显影装置还满足关系<?in-line-formula description =“In-line Formulas”end =“lead”?> M0> =(mg0xvxl)/0.02 <?in-line-formula description =“In-line 公式“end =”tail“?>其中,mg0(g / mm 2)表示从显影辊供给到具有100%图像覆盖率的静电潜像的每单位面积的调色剂量 其形成在感光鼓上,v(mm / s)表示感光鼓的旋转圆周速度,l(mm)表示感光鼓上的最大打印宽度,M0(g / s)表示感光鼓的旋转圆周速度, 通过第二显影剂输送螺杆在第二显影剂输送方向上每单位时间输送的显影剂。
摘要:
An image output apparatus for controlling an output image stably. The image output apparatus comprises a database for storing data giving a relation between manipulated variables and a controlled variable for a reference pattern. The apparatus estimates sets of values of the manipulated variables used when outputting an image of the reference pattern, by using the data on the database to obtain values of the manipulated variables from a desired value for the reference pattern. By means of detected values for a plurality of images of the reference pattern outputted according to the estimated values of the manipulated variables, set values of the manipulated variables for the desired value is calculated.
摘要:
The present invention provides a one-component development type developing apparatus including a rotatable electrostatic latent image holding member 1 on the surface of which an electrostatic latent image is formed, and using a toner 4 for rendering the electrostatic latent image visible, wherein when the shape factor SF-1 of a toner fine particle is expressed by: SF-1=(M2/A)×(π/4)×100 where A is the projected area of the fine particle and M is the absolute maximum length of the fine particle, then the shape factor SF-1 of the toner 4 is at least 100 and at most 140, and the developing apparatus includes: a toner holding member 3 that is formed from a silicone rubber elastic material and that is for holding the toner 4 and transporting it to the electrostatic latent image holding member 1; a toner layer regulating member 9 for forming the toner on the toner holding member 3 into a thin layer; and a toner supply member 5 that is formed from a silicone rubber foam and that rotates, in a position opposed to the toner holding member 3, in a direction opposite to that of the toner holding member 3, and an AC electric field is formed between the toner holding member 3 and the toner supply member 5.
摘要:
The present invention provides a one-component development type developing apparatus including a rotatable electrostatic latent image holding member 1 on the surface of which an electrostatic latent image is formed, and using a toner 4 for rendering the electrostatic latent image visible, wherein when the shape factor SF-1 of a toner fine particle is expressed by: SF-1=(M2/A)×(π/4)×100 where A is the projected area of the fine particle and M is the absolute maximum length of the fine particle, then the shape factor SF-1 of the toner 4 is at least 100 and at most 140, and the developing apparatus includes: a toner holding member 3 that is formed from a silicone rubber elastic material and that is for holding the toner 4 and transporting it to the electrostatic latent image holding member 1; a toner layer regulating member 9 for forming the toner on the toner holding member 3 into a thin layer; and a toner supply member 5 that is formed from a silicone rubber foam and that rotates, in a position opposed to the toner holding member 3, in a direction opposite to that of the toner holding member 3, and an AC electric field is formed between the toner holding member 3 and the toner supply member 5.
摘要:
The present invention provides a developing apparatus to be provided in a quick start up electrophotographic image forming apparatus that can efficiently prevent generation of unevenness by a screw pitch in a short period of time. The developing apparatus rotates a developer transporting screw so as to transport and supply a developer to a developer bearing member, and develops a latent image formed on an image bearing member by the developer. The developer transporting screw includes a vane winding around a rotation shaft in a spiral form. A vane surface on other side of a developer transport direction of the vane includes two planes having different angles with a rotational center line of the rotation shaft. Relationships of θ2
摘要:
The present invention provides a developing apparatus to be provided in a quick start up electrophotographic image forming apparatus that can efficiently prevent generation of unevenness by a screw pitch in a short period of time. The developing apparatus rotates a developer transporting screw so as to transport and supply a developer to a developer bearing member, and develops a latent image formed on an image bearing member by the developer. The developer transporting screw includes a vane winding around a rotation shaft in a spiral form. A vane surface on other side of a developer transport direction of the vane includes two planes having different angles with a rotational center line of the rotation shaft. Relationships of θ2
摘要:
A drug transferring needle includes a needle base portion, a first needle portion having therein an air passage, and a second needle portion longer than the first needle portion and arranged parallel to the first needle portion. In the first needle portion, a first air vent being one end of the air passage is provided on a distal end side of the second needle portion from a second air vent being the other end of the air passage. In the second needle portion, one end of a liquid passage is connected to the inside of the needle base portion, and the other end thereof is a liquid pass opening of the second needle portion. The second needle portion has a distal end having the liquid pass opening, a base portion connected to the needle base portion, and an intermediate portion connecting the distal end and the base portion.