摘要:
For use with an optical scanning device, a reading head (40) comprising a housing (41, 83) having at least one bore (42, 84, 84') for accommodating therein a respective photo-multiplier tube (43, 81, 82) and a non-intersecting lateral bore (44, 85) for accommodating therein a stimulating light source (45, 86) for producing a stimulating beam having a first wavelength. A focusing lens (46, 91) is mounted in association with the stimulating light source for focusing the stimulating beam on a film (92) of the scanning device so as to produce stimulated fluorescent light having a second wavelength in the film at a point of contact by the stimulating beam. A window (50, 88) is provided within the housing for mounting therein a filter (51, 89, 90) for transmitting therethrough the stimulated fluorescent light whilst substantially blocking reflections of the stimulating beam. The housing is mounted in spaced relationship with the film so as to direct the stimulating light beam perpendicular to the film such that the distance from the film to an internal periphery of the lateral bore within the housing is equal to a focal length of the focusing lens, and the stimulating light source is fixed within the lateral bore so that the focusing lens is in precise registration with the internal periphery.
摘要:
The invention relates to a system (21) for transferring data onto disk-type data carriers (23, 23'), comprising a support (22, 22') for receiving said data carriers (23, 23') said support being configured at least partially as an inner cylinder and the side of said data carriers which is used for carrying data facing towards the cylinder axis (29) of the support (22, 22'), and a transfer head (30). Said transfer head (30) can rotate around said cylinder axis (29) and has at least one transfer element (24) for transferring the data onto the data carriers (23, 23'). The support (22, 22') and the transfer head can also move in relation to each other in the direction of the cylinder axis (29) and the distance between at least one surface of the transfer head (30) or transfer element (24) and the data carrier (whilst data is being transferred), is preferably less than 1/4 of the diameter of the support, especially less than 1 cm. The system (21) is characterized in that the transfer element (24) comprises an array of light sources for transferring the data using a multibeam technique. According to a first embodiment, the transfer head is arranged so that it is able to both move in the direction of and rotate around the cylinder axis (29) of the support and the transfer elements (24) comprise a plurality or an array of laser diodes for transferring the data onto a thermo-printing plate (23, 23') using a multibeam technique.
摘要:
The present invention relates to an electrophotographic apparatus in which maximum potential difference ΔVD (volt) in a potential of a dark portion of the electrostatic image in the longitudinal direction, maximum potential difference ΔVL in a potential of a light portion of the electrostatic image in the longitudinal direction, a value a (1/volt) represented by (variation amount in density, in the longitudinal direction, in the image formed by developing the light portion with the developing means)/(the maximum potential difference ΔVD) and a value b (1/volt) represented by (variation amount in density, in the longitudinal direction, in the image formed by developing the light portion with the developing means)/(the maximum potential difference ΔVL) satisfy a relation: 0.3 ≤ a × ΔVD + b × ΔVL ≤ 0.3 in which 100 ≥ |ΔVD| ≥ 20 and 100 ≥ |ΔVL| ≥ 20.
摘要:
In order to can obtain parallelism of an image with respect to an image recording medium, there is provided an image-recording apparatus comprising a rotary body on which the recording medium has been wound, the image-recording section, which includes a plurality of light sources arranged in the sub-scanning direction, the image-recording section being capable of contemporaneously forming a plurality of main scanning lines on the recording medium in accordance with one cycle of main scanning, the recording medium having been pre-inclined with respect to the rotary body when being wound thereon, such that the main scanning lines formed on the recording medium are substantially parallel with one edge of the recording medium; and a control section which alters timing for forming the main scanning lines of each main scan on the basis of an angle at which the recording medium is wound with respect to the rotary body.
摘要:
The present invention relates to an electrophotographic apparatus in which maximum potential difference ΔVD (volt) in a potential of a dark portion of the electrostatic image in the longitudinal direction, maximum potential difference ΔVL in a potential of a light portion of the electrostatic image in the longitudinal direction, a value a (1/volt) represented by (variation amount in density, in the longitudinal direction, in the image formed by developing the light portion with the developing means)/(the maximum potential difference ΔVD) and a value b (1/volt) represented by (variation amount in density, in the longitudinal direction, in the image formed by developing the light portion with the developing means)/(the maximum potential difference ΔVL) satisfy a relation:0.3 ≤ a × ΔVD + b × ΔVL ≤ 0.3 in which 100 ≥ |ΔVD| ≥ 20 and 100 ≥ |ΔVL| ≥ 20.
摘要:
A plotter for recording an image on a sheet of light sensitive flexible medium. The plotter includes a drum having a wall with a cylindrical inner surface, which is adapted to have the sheet attached thereto. The drum is rotatable about the geometric axis of the cylindrical inner surface. The plotter also includes an electro-optical assembly for projecting at least one modulatable light beam onto the inner surface.
摘要:
An apparatus and method for clamping the leading edge (46) of media (18) from a supply (20) of recording media (18), such as a printing plate (18), on the external drum (24) of an imaging system (10). The leading edge (46) clamping apparatus (48) includes a spring segment (108) disposed on the external drum (24), wherein the spring segment (108) may be selectively displaced between a clamping position (Fig. 4) for clamping the leading edge (46) of the printing plate (18) against the external drum (24) and a release position (Fig. 5), and an inflatable member (118, 308) positioned between the spring segment (108) and the external drum (24) for displacing the spring segment (108) between the clamping position (Fig. 4) and the release position (Fig. 5).
摘要:
An apparatus and method for clamping the leading edge (46) of media (18) from a supply (20) of recording media (18), such as a printing plate (18), on the external drum (24) of an imaging system (10). The leading edge (46) clamping apparatus (48) includes a spring segment (108) disposed on the external drum (24), wherein the spring segment (108) may be selectively displaced between a clamping position (Fig. 4) for clamping the leading edge (46) of the printing plate (18) against the external drum (24) and a release position (Fig. 5), and an inflatable member (118, 308) positioned between the spring segment (108) and the external drum (24) for displacing the spring segment (108) between the clamping position (Fig. 4) and the release position (Fig. 5).
摘要:
For use with an optical scanning device, a reading head (40) comprising a housing (41, 83) having at least one bore (42, 84, 84') for accommodating therein a respective photo-multiplier tube (43, 81, 82) and a non-intersecting lateral bore (44, 85) for accommodating therein a stimulating light source (45, 86) for producing a stimulating beam having a first wavelength. A focusing lens (46, 91) is mounted in association with the stimulating light source for focusing the stimulating beam on a film (92) of the scanning device so as to produce stimulated fluorescent light having a second wavelength in the film at a point of contact by the stimulating beam. A window (50, 88) is provided within the housing for mounting therein a filter (51, 89, 90) for transmitting therethrough the stimulated fluorescent light whilst substantially blocking reflections of the stimulating beam. The housing is mounted in spaced relationship with the film so as to direct the stimulating light beam perpendicular to the film such that the distance from the film to an internal periphery of the lateral bore within the housing is equal to a focal length of the focusing lens, and the stimulating light source is fixed within the lateral bore so that the focusing lens is in precise registration with the internal periphery.