JPS6337243U

JPS6337243U -

Info

Publication number: JPS6337243U
Application number: JP12889786U
Authority: JP
Priority date: 1986-08-26
Filing date: 1986-08-26
Publication date: 1988-03-10

Description

[Brief explanation of drawings]

第１図はこの考案に係る記録ヘツドの冷却装置
の実施例１を示す概略斜視図、第２図は第１図中
方向から見た矢視図、第３図ａは実施例１にお
けるヘツド基板の温度分布特性を示すグラフ図、
第３図ｂは実施例１における放熱部材の放熱分布
特性を示すグラフ図、第４図はこの考案に係る記
録ヘツドの冷却装置の実施例２を示す概略斜視図
、第５図は第４図中方向から見た矢視図、第６
図は従来における記録ヘツドの冷却装置の一例を
示す概略斜視図、第７図は第６図中方向から見
た矢視図、第８図は従来における記録ヘツドの冷
却装置の他の例を示す概略斜視図、第９図は従来
例におけるヘツド基板の蓄熱分布特性を示すグラ
フ図である。〔符号の説明〕１……ＬＥＤヘツド（記録ヘツ
ド）、４……ヘツド基板、１０……放熱部材、１
２……放熱フイン、２０……冷却フアン（送風手
段）、Ｐ、Ｐ_０……放熱フインの配列ピツチ、ｈ
……放熱フインの高さ寸法。 FIG. 1 is a schematic perspective view showing a first embodiment of the recording head cooling device according to the invention, FIG. 2 is a view taken from the direction of the arrow in FIG. 1, and FIG. 3a is a head board in the first embodiment. A graph showing the temperature distribution characteristics of
FIG. 3b is a graph showing the heat radiation distribution characteristics of the heat radiation member in Example 1, FIG. 4 is a schematic perspective view showing Example 2 of the recording head cooling device according to this invention, and FIG. View from the middle direction, No. 6
The figure is a schematic perspective view showing an example of a conventional recording head cooling device, FIG. 7 is a view taken from the direction of the arrow in FIG. 6, and FIG. 8 is a diagram showing another example of a conventional recording head cooling device. The schematic perspective view and FIG. 9 are graphs showing heat storage distribution characteristics of a head substrate in a conventional example. [Explanation of symbols] 1... LED head (recording head), 4... Head board, 10... Heat dissipation member, 1
2... Heat dissipation fin, 20... Cooling fan (air blowing means), P, P ₀ ... Arrangement pitch of heat dissipation fin, h
...Height dimension of heat dissipation fin.

Claims

[Claims for Utility Model Registration] (1) A cooling device attached to a recording head in which recording elements are arranged at different pixel densities along the longitudinal direction of the front side of the head substrate, which is attached to the back side of the head substrate. is provided with a heat dissipating member having a large number of heat dissipating fins arranged along the width direction of the head board in the longitudinal direction of the head board, and an air blowing means for blowing air to the heat dissipating fin portion from a direction along the heat dissipating surface of the heat dissipating fin. A cooling device for a recording head, characterized in that the heat radiation area of the heat radiation fin per unit length along the longitudinal direction of the head substrate is variably set in accordance with the heat storage distribution in the longitudinal direction of the head substrate. (2) The above-mentioned heat dissipation fin group is formed to have the same size, and the arrangement pitch thereof becomes denser toward the longitudinal center of the head board. A cooling device for a recording head according to item 1. (3) The above-mentioned group of heat dissipation fins are arranged at a common arrangement pitch, and the area of the heat dissipation fins increases toward the longitudinal center of the head board. A cooling device for a recording head according to scope 1.