Abstract:
An optical scanning apparatus includes a plate member, having a rotation axis and a reflection surface, that deflects and scans a laser beam emitted from a light source by performing reciprocating-rotation around the rotation axis, an actuator configured to drive the plate member, an ftheta-lens configured to focus the laser beam deflected by the plate member on a surface of a photosensitive drum, and an optical box configured to house the plate member, the actuator, and the ftheta-lens. The actuator is provided nearer to a side of the optical box toward which the laser beam is reflected by the reflection surface than the reflection surface of the plate member is.
Abstract:
스캔장치에 관한 것으로, 스크류와 같은 별도의 체결부품 없이 상하부 커버가 결합될 수 있도록 독취될 원고가 상측에 위치되는 글래스; 글래스가 장착되는 상부커버; 글래스의 상측을 덮는 원고커버; 글래스의 하측에서 원고를 스캐닝하는 독취수단; 상부커버의 하측에 위치되며 독취수단이 설치되는 하부커버; 및 상부커버 또는 하부커버 중 어느 하나의 커버에 돌기부를 형성하고, 다른 커버의 대향되는 위치에는 걸림턱을 형성하여 탄성에 의해 끼워맞춤되는 결합수단;이 포함된다.
Abstract:
An image sensor which does not produce stress in a line illuminating device or a frame and therefore is free from warping or the like even when thermal expansion difference or thermal contraction difference exists between the line illuminating device and the frame, and a production method of the image sensor. The image sensor comprises a line illuminating device for applying light to an original copy, an light reception element array for receiving light reflected from the original copy thus illuminated, an lens array for imaging the original copy and the light reception element array, a frame housing the line illuminating device, the lens array and the light reception element array, and a resilient holding unit mounted on the frame, for pressing the line illuminating device against the frame.
Abstract:
A scanning head comprises a support member (2) for supporting the head in pressing contact with a platen (26). The support member has lower strength portions (A) spaced longitudinally of the head, and higher strength portions (B) alternate with the lower strength portions. The support member is easily bendable at the lower strength portions, and the higher strength portions are urged by springs (27) toward the platen. Thus, the head can come into intimate pressing contact with the platen even if the surface flatness of the support member as a whole is not strictly realized.
Abstract:
An image reading device capable of correctly reading an image on a document is provided without the need to increase the size of an upper cover, etc. of the device. A CIS (Contact Image Sensor) is supported by holders and support shafts to be movable toward the upper cover (rib) and is biased toward the rib by compression springs. In this configuration, the rib for holding the document is not required to be installed as a movable component and there is no need to provide a space for allowing the rib to move or providing the upper cover with a mechanism for allowing the rib to move, which can avoid the need to increase the size of the upper cover.
Abstract:
A scanner (10) includes a carriage unit (20) having a cover (30) with an elongated slot (26) and groove (25) for helping to define a document illumination area on a document (16) to be scanned. A flexible reflector (24) is disposed within the groove for reflecting non uniform light in a substantially uniform manner. A print screen (90) disposed on the reflector (24) controls the dispersion of light from the reflector and includes an elongated narrow reflective center portion (96) sandwiched between a pair of elongated non reflective center portions (92,94) and a pair of spaced apart reflective end portions (93,98).
Abstract:
A document scanner carriage (20) housing contains a pair of spaced mirrors (34,36) whose spacing and parallelism is precisely maintained by floating metal spacer plates (60,62) which are not affixed to the housing. Spaced springs (35) urge one of the mirrors (34,36) into engagement with the spacer plates (60,62), the other mirror(34,36) being referenced to the molded plastic housing (50). The parallel facing image plane sides of the mirrors (34,36) are substantially unobstructed by the spacer plates (60,62) which contact them thus allowing the scanner (10) to efficiently use a substantial proportion of the image planes of the mirrors (34,36) and occupy a comparatively small footprint. The floating spacer plates (60,62) and mirrors (34,36) are cushioned against shock and vibration by compressed elastomeric pads (80,81,82,83) on the underside of the housing cover (30) which allows the spacing and parallelism of the mirrors (34,36) to be maintained without direct affixation of the mirrors (34,36) or spacer plates (60,62) to the housing (50).
Abstract:
A scanner (10) includes a carriage unit (20) having a cover (30) with an elongated slot (26) and groove (25) for helping to define a document illumination area on a document (16) to be scanned. A flexible reflector (24) is disposed within the groove for reflecting non uniform light in a substantially uniform manner. A print screen (90) disposed on the reflector (24) controls the dispersion of light from the reflector and includes an elongated narrow reflective center portion (96) sandwiched between a pair of elongated non reflective center portions (92,94) and a pair of spaced apart reflective end portions (93,98).
Abstract:
A scanning head comprises a support member (2) for supporting the head in pressing contact with a platen (26). The support member has lower strength portions (A) spaced longitudinally of the head, and higher strength portions (B) alternate with the lower strength portions. The support member is easily bendable at the lower strength portions, and the higher strength portions are urged by springs (27) toward the platen. Thus, the head can come into intimate pressing contact with the platen even if the surface flatness of the support member as a whole is not strictly realized.