Abstract:
A sheet conveying apparatus and an original reading apparatus according to the present invention can reduce a load of a drive system for rotating a convey rotary member and can be made compact. The apparatus comprises an original convey roller 1 rotatably supported by a frame 5, and a CS holder 3 rockably held by a CS holder rotation shaft 3a regulated (in a thickness-wise direction of an original) by a CS holder rotation shaft holding portion 5a of the frame 5 and adapted to hold a CS 2 in a confronting relation to the original convey roller 1. The CS 2 is urged against the original convey roller 1 by an urging spring 4.
Abstract:
An automatic sheet conveying mechanism comprising an automatic document conveying mechanism and having a sheet guide plate (102) defining an opening (P9b) for receiving an elongate contact type image sensor (109) for scanning a lower surface of a document conveyed in a sheet conveying path (103) and guiding said lower surface of said document. The sheet guide plate (102) is integrally formed with an accommodating part (102c) for accommodating the image sensor (109) in a predetermined position, and the opening (P9b) is dimensioned to enable the image sensor to be put in and taken out of said accommodating part (102c) from above said sheet guide plate (102).
Abstract:
An image sensor has a frame, a transparent cover which is mounted on the top of the frame and on which an original document is to be placed, and a base plate disposed within the frame. On the base plate, there are mounted a light emitting section, a lens for condensing the reflective light and a light receiving section. The base plate is disposed within the frame so that the light emitting section is located directly below the transparent cover and the optical axis of the condensing lens is inclined relative to the plane of the transparent cover. Light rays emitted from the light emitting section enter the transparent cover in a direction substantially perpendicular to the plane thereof and are reflected by the transparent cover slantingly toward the light receiving section. By arranging the condensing lens inclined relative to the plane of the transparent cover, the vertical distance between the light receiving section and the transparent cover can be reduced. The entire configuration of the frame is tapered toward the transparent cover on the top thereof. Thus, the image sensor can be more easily assembled into any electronic instrument. The light emitting section is enclosed by walls which are increased in reflectivity, resulting in an increase of the amount of irradiating light. The condensing lens can be mounted and held in a recess formed in the top of the frame without the need for any adhesive.
Abstract:
Dispositif de numérisation d'articles de courrier comprenant un capteur d'images à contact (22) disposé selon une direction perpendiculaire à la direction de convoyage des articles de courrier au travers d'un module d'un système d'affranchissement; un support (40 ; 40A, 40B) sur lequel est fixé le capteur, le support pouvant pivoter à une extrémité d'au moins un premier levier d'entraînement (44) dont l'autre extrémité peut elle même pivoter autour d'un premier axe d'articulation commun (46), solidaire d'une partie fixe (38) du module et disposé en amont d'un ensemble de rouleaux de transport, de façon à permettre un déplacement vertical du capteur d'images à contact ; et au moins un second levier d'entraînement (48) dont une extrémité peut pivoter autour d'un second axe d'articulation commun (50), solidaire de la partie fixe du module et disposé en aval de l'ensemble de rouleaux de transport et dont l'autre extrémité déplacée en synchronisme avec le déplacement vertical de cet ensemble de rouleaux de transport va assurer le déplacement du capteur d'images à contact via le premier levier d'entraînement.
Abstract:
An image forming apparatus includes a laser scanning unit (30) having at least two coupling parts (133), and a main body frame (170) having a main body coupling part (171) corresponding to each of the coupling parts (133), at least one of the coupling parts (133) and the main body coupling part (171) having a deformation limiting cut-out (173) to limit a relative deformation of the laser scanning unit (30) coupled to the main body frame (170).
Abstract:
An electrophotographic apparatus (1) achieves miniaturization thereof and improvement of image quality. The shape of an optical scanning device mount frame (16) mounting an optical scanning device is trapezoidal, and asymmetrical with respect to a center line (CL) thereof, and a short side part and a long side part are attached to a first (13) and second frames (14) of the apparatus, respectively. A space for attaching parts is available on the side of the first frame, and a driving device (15) is placed inside the first frame (13) so that the apparatus can be miniaturized. Since the optical scanning device mount frame (16) is asymmetrical with respect to the center line thereof, as compared with one having a symmetrical shape, an eigenvalue of vibration can be shifted to a high frequency, and the mount frame is resistant to vibrate. Thus, the fluctuation of a light beam is suppressed, and the image quality can be improved.
Abstract:
A contact image sensor (CIS) (201) is incorporated into a drive belt (203) attached to the length of the CIS, resulting in a more compact scanning mechanism and in lighter and smaller scanning devices. The CIS (201) is forced to traverse the document by a drive mechanism (235) that pulls the entire belt and CIS across the document while maintaining the tension necessary to keep the document in the narrow depth of focus. This mechanism provides a uniform force on the CIS, reducing the possibility of yawing motion, and keeps the document in focus through the tension on the drive belt. The combined CIS and transport mechanism power requirements can be supplied by standard computer interfaces. The mechanism also hides the internal workings of the scanner behind a drive belt (203) that is the size of the platen window (301). The drive belt can either be printed with instructions or markings to indicate document placement, or left blank.