JPS6349959U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a recording head cooling device according to a first embodiment of this invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 shows a group of heat radiation fins reached in this first embodiment. A graph showing the distribution of air volume,
FIG. 4 is a schematic perspective view showing a recording head cooling device according to the second embodiment, FIG. 5 is a schematic perspective view showing a recording head cooling device according to the third embodiment, and FIG. 6 is a fourth embodiment. 7 is a schematic perspective view showing an example of a cooling device for a conventional recording head, FIG. 8 is a view taken from the direction of the arrow in FIG. 7, and FIG. This figure is a schematic perspective view showing another example of a conventional recording head cooling device, and FIG. 10 is a graph diagram showing heat storage distribution characteristics of a head substrate in the conventional example. [Explanation of symbols] 1... LED head (recording head), 4... head board, 10... heat radiating member, 12... heat radiating fin, 20a... cross flow fan (air blowing means), 20b... propeller fan (air blowing means), 3
0a...Side ventilation guide plate (airflow guide), 30b
...Air distribution guide plate (air blow guide).

Claims (1)

[Claims for Utility Model Registration] (1) A recording head cooling device in which recording elements are arranged at different pixel densities along the longitudinal direction of the front surface of the head substrate; A large number of heat dissipation fins extending in the width direction are arranged in the longitudinal direction of this head board, and on the sides of these heat dissipation fins there is a spacer along the heat dissipation surface of each heat dissipation fin, which is at least shorter than the length of the heat dissipation fin group. A blowing means for blowing air from the direction toward the heat dissipation fin group is provided, and the center of the air blowing means is made to substantially coincide with the center of the heat dissipation fin group. A cooling device for a recording head, characterized in that an air blowing guide is provided so that the air flow reaches a maximum and decreases as it approaches both ends. (2) The recording head cooling device according to claim 1, wherein the air blowing guide provided between the air blowing means and the group of heat radiating fins is a blow distribution guide that distributes the air that reaches the group of heat radiating fins. . (3) The recording head cooling device according to claim 1 or 2, wherein the heat radiation area of the heat radiation fin group is maximum at the center and decreases as it approaches both ends.