JPS60229019A - Slide cord unit for exposure lamp - Google Patents

Abstract

PURPOSE:To prevent the cord of an exposure lamp from being wound or caught in a copying machine by fixing the cord in the copying machine through a pulley provided to a half-rate carriage. CONSTITUTION:The cord 3 of the exposure lamp 2 incorporated in a full-rate carriage 1 moving on the reverse surface of a platen is fixed with a screw to the fixation part 6 in the copying machine through the pulley 5 provided rotatably to a side part of the half-rate carriage 4 moving a half as fast as the full- rate carriage 1. When the full-rate carriage 1 moves at a speed V so as to expose a copy original, the half-rate carriage moves in the same direction at V/2, so the distance from the exposure lamp 2 to the fixation part 6 of the cord 3 of the exposure lamp through the pulley 5 is considered to be held constant all the time. Consequently, even when the half-rate carriage 1 moves, the cord 3 has no play and moves following up the movement of the half-rate carriage 1 while applied with constant tension.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a slide cord unit for an exposure lamp of a copying machine.

Conventional technology In a copying machine having a fixed platen on which a copied original is placed, light is scanned onto the original from below the fixed platen, and the resulting reflected light from the original is focused and irradiated onto the photosensitive drum surface. ing. A copying machine having a fixed platen is normally constructed as follows so that the reflected light from the original is always focused on the photosensitive drum surface when the light is scanned over the entire width of the original. That is, a full-rate carriage is equipped with an exposure lamp that irradiates light onto the original and a reflecting mirror that reflects light reflected from the original, and the light is reflected by the reflecting mirror provided on this Sollet 1 carriage. receive the light that is given to you,
The focusing optical system consists of a half-rate carriage that has a strong reflecting mirror and moves at half the speed of the full-rate calison as the full-rate carriage moves.

However, in this fixed platen type copying machine, the cord of the exposure lamp may get caught in the half-rate carriage when the full-rate carriage moves.
There were many problems with the parts getting caught on the edges of parts inside the copier and causing damage.

OBJECTS OF THE INVENTION An object of the present invention is to prevent the cord of the exposure lamp attached to the full-rate carriage from becoming entangled within the copying machine in a fixed platen type copying machine equipped with a full-rate carriage and a half-rate carriage as described above. The purpose is to prevent getting caught.

Structure of the Invention In the exposure lamp slide cord unit of the present invention, an exposure lamp cord provided on a full rate carriage that moves on the lower surface of a platen is rotatably provided on a half rate carriage that moves at half the speed of the full rate carriage. It is characterized by being fixed inside the copying machine via a pulley.

Therefore, according to the present invention, even if the full rate carriage moves in order to irradiate the entire surface of the copy document with light,
Since the distance from the fixed point of the exposure lamp cord inside the copying machine to the exposure lamp of the full rate carriage via the half rate carriage pulley is kept constant, there is no play in the exposure lamp cord, and the exposure lamp cord is fixed. No more damage caused by the cord getting caught or caught.

EXAMPLES The present invention will be explained below using examples. FIG. 1 is a schematic perspective view of an embodiment of the present invention.

A cord 3 of an exposure lamp 2 incorporated in a full rate carriage 1 that moves on the lower surface of a platen (not shown) is rotatably provided on the side of a half rate carriage 4 that moves at half the speed of the full rate carriage 1. It is screwed and fixed via a pulley 5 to a fixing part 6 inside the copying machine. As shown in FIG. 12, when the full-rate carriage l moves at a speed V to expose a copy document, the half-rate carriage moves in the same direction at a speed of V/2. The distance 11 from the pulley 5 of the rate carriage 4 to the fixed portion 6 of the cord 3 of the exposure lamp is kept constant at all times. Therefore, even if the half-rate carriage 1 moves, the cord 3 moves following the movement of the half-rate carriage 1 with a constant tension without causing any play.

Effects of the Invention In the present invention, the cord of the exposure lamp provided on the full rate carriage is fixed inside the copying machine via the pulley provided on the half rate carriage.
- Even if the carriage body moves, there is no play in the cord. Therefore, it is possible to obtain an extremely advantageous practical advantage in that the cord of the exposure lamp is prevented from getting caught in the half-rate carriage or being caught on other parts and causing damage.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of an embodiment of the present invention, and FIG. 2 is a side view illustrating the present invention. 1...Full rate carriage, 2...Exposure lamp,
3... Code, 4... Half rate carriage, 5
...Pulley, 6...Fixed part.

Claims (1)

[Claims] The cord of the exposure lamp installed on the full rate carriage 7 that moves on the underside of the platen is transferred into the copying machine through a pulley rotatably installed on the bar fly 1 carriage that moves at half the speed of the full rate carriage. Exposure lamp slider 1' characterized by being fixed to the
1 Nino I.