摘要:
An image reading apparatus accurately determines the positions of image forming mirrors formed with an off-axis reflecting surface, while enabling any thermal expansion caused by a rise in temperature due to a rise in the surrounding temperature to be absorbed. Each image forming mirror formed with an off-axis reflecting surface comprises respective and independent units for determining the positions in the longitudinal direction, in the lateral position, and in the direction orthogonal to the reflecting surface. Holes with which the longitudinal position determining units and the lateral position determining units engage have gaps in the directions orthogonal to the position determining directions to absorb the thermal expansion caused by a rise in the temperature of the image forming mirror when the position determining units engage with the holes. Determination of the position of the reflecting surfaces of the image forming mirrors is carried out by urging urging faces provided on the reflecting surface side against the housing.
摘要:
An image reading apparatus includes a second image reader reading the back of an original in an original reader, and is capable of alleviating the impact acting on the second image reader upon opening/closing of the original reader. The image reading apparatus also improves the opening/closing operability and permits easy placement of the original on the reading section. The image reading apparatus includes a line sensor which reads originals on original tables, an original feeding unit which conveys the original onto the original table, a hinge section which rotatably supports the original feeding unit relative to the apparatus main body, and a contact-type image sensor which is provided on the original feeder and reads the back of the original. The rotation axis of the hinge section is arranged so as to be perpendicular to the arrangement direction of the line sensor. A contact-type image sensor is attached to the original feeding unit via elastic members.
摘要:
An object of this invention is to provide an image reading apparatus capable of reading an original image at high speed. And other object is to provide an image reading apparatus in which even when heat is generated at an inverter, reading operation is not influenced. In order to achieve these object, the image reading apparatus is comprised with a scanning means including, a light source for illuminating an original, an image pickup element for receiving reflected light from the original, a cabinet and an inverter provided at a vicinity of a side face of the cabinet in parallel with a direction of moving the light source for driving the light source, a communicating means provided at a vicinity of a side face of the cabinet opposed to the side face at the vicinity of the inverter and a cooling fan for cooling an interval between the inverter and the communicating means.
摘要:
In an image reader that adopts an off-axial optical system, an adjustable imaging mirror and a CCD fixed to a highly rigid structure. Since the relative position between reflecting mirrors and imaging mirrors can be set highly accurately, adjusting only the CCD-mounting position allows a required specification of the read image to be met. The imaging mirror can easily be adjusted without distorting the reflecting surface when necessary. The reflecting mirrors, the imaging mirrors, and the CCD-mounting-position adjusting means are positioned directly to reflecting-mirror supporting sections, imaging-mirror supporting sections, and CCD supporting sections, which are integrated with a carriage casing, and fixed to them. The CCD is fixed to the carriage casing with the CCD-mounting-position adjusting means. An imaging mirror close to a diaphragm and adjacent to the image is supported by a mirror adjusting plate. The position of the imaging mirror is adjusted by displacing the mirror adjusting plate.
摘要:
An image reading apparatus having an original base unit on which an original is placed, a light source for illuminating the original on the original base unit, a light-receiving unit for receiving light reflected from the original, air blasting unit for sending air in the direction away from the light source, and a wall surface for allowing air sent from the air blasting unit toward the light source.