Abstract:
A four-direction adjustable optical module including a carriage and a CCD module is disclosed. The carriage includes a coupling window for coupling with the CCD module. Each of the two sides of the CCD module includes a screw hole and an elastic device. The elastic device slightly protrudes from the surface of the coupling window. While the CCD module and the coupling window are coupled, screws are employed to screw through the CCD module and into the screw holes of the coupling windows. Therefore, the elastic devices deform by the stress from the CCD module. By adjusting the tightness of the screws, the orientation of the CCD module rotating on the Z axis can be calibrated. Thus, the adjustable optical module of the invention can be calibrated at least in four directions.
Abstract:
In an image reading apparatus (1), a plurality of reading sensors (9. 11) extend in a main scanning direction and separated from each other in the main scanning direction so as to be located in a staggered arrangement in which a part of one of the reading sensors (9. 11) in the longitudinal direction faces a part of adjacent one of the reading sensors in a subscanning direction. A first connection member (25) is provided to the part of one of the reading sensors facing the part of the adjacent one of the reading sensors. The first connection member (25) protrudes toward the adjacent one of the reading sensors. A second connection member (27) is provided to the part of the adjacent one of the reading sensors facing the part of the one of the reading sensors. The second connection member (27) protrudes toward the one of the reading sensors. The first and second connection members are brought into contact with each other by being urged by a spring (29).
Abstract:
In an imaging system (60) of the type having a photosensor package (510) and at least one optical component (570), e.g., a lens, mounted within an optical assembly housing (200), the photosensor package (510) is mounted to a substrate (540), such as a printed circuit board, which has a shorter length than the photosensor package (510). This shorter length causes the ends of the photosensor package (510) to extend beyond the substrate (540) and, thus, be exposed. The exposed ends (524, 526) of the photosensor package (510), in turn, allow the photosensor package (510) to be directly referenced to reference surfaces (442, 446, 450, 452) formed on the optical assembly housing (200).
Abstract:
A four-direction adjustable optical module including a carriage and a CCD module is disclosed. The carriage includes a coupling window for coupling with the CCD module. Each of the two sides of the CCD module includes a screw hole and an elastic device. The elastic device slightly protrudes from the surface of the coupling window. While the CCD module and the coupling window are coupled, screws are employed to screw through the CCD module and into the screw holes of the coupling windows. Therefore, the elastic devices deform by the stress from the CCD module. By adjusting the tightness of the screws, the orientation of the CCD module rotating on the Z axis can be calibrated. Thus, the adjustable optical module of the invention can be calibrated at least in four directions.
Abstract:
To provide a scanning head (10) suitable for scanning large-size documents, a plurality of contact type CCDs (12, 14, 16) are staggered on a common substrate (18) with overlapping end portions, so that their sensitive ranges (22, 24, 26) are adjoined to one another. The adjacent ends of two CCDs (12, 14) are fixed on the substrate by stops (28, 34), and the opposite ends of these CCDs are elastically supported to allow for thermal expansion or contraction. Between the first CCD (12) and the third CCD (16), a spacer (40) is interposed which has a thermal expansion coefficient comparable to that of the CCDs, so that the sensitive ranges (24, 26) of the second and third CCDs (14, 16) are matched to one another, irrespective of the expansion or contraction of the second CCD (14).
Abstract:
Film gate for a virtual contact scanner includes a base having a precision site adapted to receive a solid-state scanner assembly so as to position the sensor photosites at a precise spacing from the film image plane. A separate circuit board carrying control circuits for the scanner assembly is clamped over the scanner with contact terminals aligned with mating input/output terminals of the scanner assembly. Preferably the scanner terminals are aligned with open slots in the substrate and electrical contact is made between the scanner and circuit board terminals by means of compressible electrically conductive pads. Clamping force is concentrated over the region of electrical contact between the circuit board and scanner terminals to assure good electrical contact.
Abstract:
An image reader is capable of improving the quality of reading a transmission manuscript and of reducing a cost for a luminaire power source compared with the conventional image reader. The image reader comprises a casing (1) having a ceiling (2A) of a transparent manuscript plate (5), the casing (1) further housing therein a read unit (40) provided with a reflection read light source unit (55), a drive mechanism for reciprocally moving the read unit (4) from its home position (HP) and a luminaire power source unit; and a transmission read light source unit (20) provided separately from the casing (1), wherein the transmitted light which has passed the manuscript or the reflected light which has reflected from the manuscript is focused on the receiving surface of a read sensor (48) of the read unit (40) to thereby produce the image thereon, wherein the transmission read light source unit (20) can be connected to the read unit (40) mechanically and electrically by a connecting mechanism having a releasing function, and cooperate with the read unit (40), and wherein the casing (1) has recess portions (6, 6) thereon in the scanning direction of the connecting mechanism, and wherein the luminaire power source unit is provided with an inverter power source (60) which is common to the reflection read light source unit (55) and the transmission read light source unit (20) and a light source unit switching device (61) which can switch the output of the inverter power source (60) to the reflection read light source unit (55) or the transmission read light source unit (20).
Abstract:
To provide a scanning head (10) suitable for scanning large-size documents, a plurality of contact type CCDs (12, 14, 16) are staggered on a common substrate (18) with overlapping end portions, so that their sensitive ranges (22, 24, 26) are adjoined to one another. The adjacent ends of two CCDs (12, 14) are fixed on the substrate by stops (28, 34), and the opposite ends of these CCDs are elastically supported to allow for thermal expansion or contraction. Between the first CCD (12) and the third CCD (16), a spacer (40) is interposed which has a thermal expansion coefficient comparable to that of the CCDs, so that the sensitive ranges (24, 26) of the second and third CCDs (14, 16) are matched to one another, irrespective of the expansion or contraction of the second CCD (14).
Abstract:
An image reader is capable of improving the quality of reading a transmission manuscript and of reducing a cost for a luminaire power source compared with the conventional image reader. The image reader comprises a casing (1) having a ceiling (2A) of a transparent manuscript plate (5), the casing (1) further housing therein a read unit (40) provided with a reflection read light source unit (55), a drive mechanism for reciprocally moving the read unit (4) from its home position (HP) and a luminaire power source unit; and a transmission read light source unit (20) provided separately from the casing (1), wherein the transmitted light which has passed the manuscript or the reflected light which has reflected from the manuscript is focused on the receiving surface of a read sensor (48) of the read unit (40) to thereby produce the image thereon, wherein the transmission read light source unit (20) can be connected to the read unit (40) mechanically and electrically by a connecting mechanism having a releasing function, and cooperate with the read unit (40), and wherein the casing (1) has recess portions (6, 6) thereon in the scanning direction of the connecting mechanism, and wherein the luminaire power source unit is provided with an inverter power source (60) which is common to the reflection read light source unit (55) and the transmission read light source unit (20) and a light source unit switching device (61) which can switch the output of the inverter power source (60) to the reflection read light source unit (55) or the transmission read light source unit (20).
Abstract:
The optical scanning apparatus has a first light source, a second light source disposed in a side-by-side relationship with the first light source in a sub-scanning direction, a deflector deflecting respectively a first light beam outgoing from the first light source and a second light beam outgoing from the second light source, and scanning over different scanned surfaces with the light beams, a first optical member provided in a first optical path between the first light source and the deflector, wherein the first light beam outgoing from the first light source passes through, a second optical member provided in a second optical path between the second light source and the deflector, wherein the second light beam outgoing from the second light source passes through, disposed beside the first optical member in the sub-scanning direction, the second optical member having the same optical characteristic as the first optical member, a holding member that holds a side face of the optical member and a side face of the second optical member and positions the first optical member and the second optical member in a main-scanning direction; and an adjusting mechanism adjusting an attitude of the holding member.