JPS63189646U

JPS63189646U -

Info

Publication number: JPS63189646U
Application number: JP8240687U
Authority: JP
Priority date: 1987-05-29
Filing date: 1987-05-29
Publication date: 1988-12-06

Description

[Brief explanation of the drawing]

第１図は本考案に係るプリンタにおけるプラテ
ンの位置調整機構の実施例を示す要部の平面図、
第２図、第３図は第１図のＡ矢視図およびＢ矢視
図、第４図は第１図の偏心カムの斜視図、第５図
は第４図の扇形板の拡大図、第６図は一般的なプ
リンタを示す平面図、第７図は第６図の右側面図
、第８図および第９図は従来のプリンタにおける
プラテンの位置調整機構を示す平面図および縦断
面図である。１……プラテン、２……プラテンゴム、３……
記録紙、６……サーマルヘツド、１０……インク
リボン、１８……プラテンフレーム、１９……舌
片、２０……支持部材、２４……プラテン付勢部
材、２５……係合部、２８……偏心カム、２９…
…回転軸、３０……扇形板、３１……凹凸、３２
……ボール、３４……印字ヘツド。 FIG. 1 is a plan view of essential parts showing an embodiment of a platen position adjustment mechanism in a printer according to the present invention;
Figures 2 and 3 are views in the direction of arrows A and B in Figure 1, Figure 4 is a perspective view of the eccentric cam in Figure 1, Figure 5 is an enlarged view of the sector plate in Figure 4, FIG. 6 is a plan view showing a general printer, FIG. 7 is a right side view of FIG. 6, and FIGS. 8 and 9 are a plan view and a vertical sectional view showing a platen position adjustment mechanism in a conventional printer. It is. 1... platen, 2... platen rubber, 3...
Recording paper, 6... Thermal head, 10... Ink ribbon, 18... Platen frame, 19... Tongue piece, 20... Supporting member, 24... Platen biasing member, 25... Engaging portion, 28... ...Eccentric cam, 29...
...rotating shaft, 30... sector-shaped plate, 31... unevenness, 32
...Ball, 34...Print head.

Claims

[Claims for Utility Model Registration] 1. A printer that is provided with a printing head opposite to a platen along which recording paper is placed, and that uses this printing head to print on the recording paper located on the platen, in which the platen is moved toward and away from the printing head. The platen is elastically biased in a direction away from the print head by a platen biasing member, and the platen is held by an eccentric cam against the elasticity of the platen biasing member. A mechanism for adjusting the position of a platen in a printer, characterized in that the position of the platen is adjusted by rotating an eccentric cam to adjust the gap between the platen and the print head. 2. A fan-shaped plate is integrally supported by the eccentric cam,
This fan-shaped plate has a plurality of recesses arranged in a row in the circumferential direction, and a ball is disposed that elastically fits into the recess to position the eccentric cam. A platen position adjustment mechanism in the printer according to item 1.