초록 ▼

A developing apparatus designed to allow toner uniformly charged with a predetermined electric charge to be formed into a toner layer formed on a circumferential surface of a developing roller, and further to allow a good image to remain formed. In order to allow a proper amount of toner having a pr

A developing apparatus designed to allow toner uniformly charged with a predetermined electric charge to be formed into a toner layer formed on a circumferential surface of a developing roller, and further to allow a good image to remain formed. In order to allow a proper amount of toner having a proper specific electric charge to deposit on the circumferential surface of the developing roller, the blade is bent at a bending angle of at least 45° while being positioned against the circumferential surface of the developing roller when displacement amount ΔL is at most plus 0.4 mm.

대표청구항 ▼

A developing apparatus designed to allow toner uniformly charged with a predetermined electric charge to be formed into a toner layer formed on a circumferential surface of a developing roller, and further to allow a good image to remain formed. In order to allow a proper amount of toner having a pr

A developing apparatus designed to allow toner uniformly charged with a predetermined electric charge to be formed into a toner layer formed on a circumferential surface of a developing roller, and further to allow a good image to remain formed. In order to allow a proper amount of toner having a proper specific electric charge to deposit on the circumferential surface of the developing roller, the blade is bent at a bending angle of at least 45° while being positioned against the circumferential surface of the developing roller when displacement amount ΔL is at most plus 0.4 mm. of residual light from two different pump beams, each of which can be a combination of two source beams. As the pump light travels along the special fiber in the absorptive loops between the launch sections, it is significantly absorbed by the gain medium in the signal-carrying core, where it generates signal light in the core or amplifies existing signal light. The special fiber may have single cladding or double cladding. said second pair of inner sides, being led by said first pair of inner sides. 3. A focused image tremble correcting device according to claim 2, wherein, in a two-dimensional coordinate system on a plane which is perpendicular to said optical axis of said correcting optical system that is positioned at a standard position in which said optical axis of said correction optical system is coaxial with an optical axis of other optical systems included in said imaging optical system, an origin of said two-dimensional coordinate being an intersection point of said optical axis of said correction optical system and said perpendicular plane, an X-axis of said two-dimensional coordinate being a straight line connecting said origin and an intersection point of said first axis and said perpendicular plane, a Y-axis of said two-dimensional coordinate being a straight line connecting said origin and an intersection point of said second axis and said perpendicular plane, a rotational angle θ1 of said first rotating board which is rotated to cancel said focused image tremble and a rotational angle θ2 of said second rotating board which is rotated to cancel said focused image tremble are calculated based on the formulas to follow: θ1=tan-1(p2/(d1+p1)) (7) θ2=tan-1(p1/(d2+p2)) (8) (herein, d1: an absolute value of an X coordinate of said first axis in said two-dimensional coordinate d2: an absolute value of a Y coordinate of said second axis in said two-dimensional coordinate p1: an absolute value of an X coordinate of said optical axis of said correcting optical system being at an aimed position at which said correction optical system has to be moved to cancel said image tremble, p2: an absolute value of a Y coordinate of said optical axis of said correcting optical system being at said aimed position). 4. A focused image tremble correcting device according to claim 2, wherein said correcting optical system is held in a supporting member which has a generally cylindrical shape, and a flange which has a predetermined height is formed on an outer surface of said supporting member, and a cylindrical portion at one end side of said supporting member penetrates through said first opening, and a cylindrical portion at another end side of said supporting member penetrates through said second opening, and said first and second rotating boards are provided so as to hold said flange therebetween. 5. A focused image tremble correcting device according to claim 2, wherein said correcting optical system is held in a supporting member which has a generally cylindrical shape, and a flange which has a predetermined height is formed on an outer surface of said supporting member, and a cylindrical portion at one end side of said supporting member penetrates through said first opening, and a cylindrical portion at another end side of said supporting member penetrates through said second opening, and said flange is slidably engaged with slits which are formed at an inner wall of said optical device. 6. A focused image tremble correcting device according to claim 1, wherein said correcting optical system is supported by a supporting member which has a generally cylindrical shape, and said first opening has a generally rectangular shape, the long sides of which are said first pair of inner sides, and said second opening has generally rectangular shape, the long sides of which are said second pair of inner sides. 7. A focused image tremble correcting device according to claim 1, wherein a line which connects said optical axis of said correcting optical system and said first axis and a line which connects said optical axis of said correcting optical system and said second axis cross at right angles. 8. A focused image tremble correcting device according to claim 1, further comprising a position detecting mechanism that detects the position of said first and second rotating boards, wherein said controller calculates the driving amount of said first and second rotating boards based on the result of the detection by said tremble detector and the result of the detection by said position detecting mechanism.