JPS644664U

JPS644664U -

Info

Publication number: JPS644664U
Application number: JP10041187U
Authority: JP
Priority date: 1987-06-30
Filing date: 1987-06-30
Publication date: 1989-01-12

Description

[Brief explanation of drawings]

第１図は本考案の構成を示す機能ブロツク図、
第２図〜第１２図は本考案の実施例を示すもので
、第２図はタイプライタの斜視図、第３図はリボ
ンカセツトの平面図、第４図は第３図―線断
面図、第５図は供給スプールの外周面を示す展開
図、第６図はタイプライタの制御系のブロツク図
、第７図はリボン巻取り制御のルーチンのフロー
チヤート、第８図〜第１２図は本実施例の変形例
を示すもので、第８図は供給スプールから展開し
た印字リボンの終端近傍部の展開図、第９図は供
給スプール近傍の要部断面図、第１０図は供給ス
プールの底面図、第１１図は供給スプール近傍の
要部断面図、第１２図は供給スプール近傍の要部
断面図である。３……キーボード、２５……リボンカセツト、
２６……印字リボン、２９……リボン巻取りモー
タ、３３……巻取りスプール、３４……供給スプ
ール、４９……光学式センサ、５０……反射板、
６０……ＣＰＵ、７０……ＲＯＭ、８０……ＲＡ
Ｍ、８６……リボン量メモリ、Ｃ……制御装置、
ＰＭ……印字機構。 Figure 1 is a functional block diagram showing the configuration of the present invention.
2 to 12 show embodiments of the present invention, in which FIG. 2 is a perspective view of a typewriter, FIG. 3 is a plan view of a ribbon cassette, FIG. 4 is a sectional view taken along the line of FIG. Fig. 5 is a developed view showing the outer peripheral surface of the supply spool, Fig. 6 is a block diagram of the control system of the typewriter, Fig. 7 is a flowchart of the ribbon winding control routine, and Figs. This shows a modification of the embodiment, in which Fig. 8 is a developed view of the vicinity of the end of the printing ribbon developed from the supply spool, Fig. 9 is a sectional view of the main part near the supply spool, and Fig. 10 is a bottom view of the supply spool. 11 is a sectional view of the main part near the supply spool, and FIG. 12 is a sectional view of the main part near the supply spool. 3...keyboard, 25...ribbon cassette,
26...Print ribbon, 29...Ribbon take-up motor, 33...Take-up spool, 34...Supply spool, 49...Optical sensor, 50...Reflector,
60...CPU, 70...ROM, 80...RA
M, 86... Ribbon amount memory, C... Control device,
PM...Printing mechanism.

Claims

[Claims for Utility Model Registration] A printing device removably equipped with a ribbon cassette having a supply spool wound with a printing ribbon and a take-up spool winding up the printing ribbon exposed to the outside from the supply spool, a ribbon take-up motor that rotationally drives the take-up spool; a ribbon amount detection means that detects the amount of printing ribbon wound around the supply spool or the amount of print ribbon wound around the take-up spool; Based on the ribbon amount detected by the ribbon amount detection means, the printing ribbon is wound up by a predetermined amount.
A ribbon feeding device for a printing device, comprising: a control means for controlling rotation of the ribbon winding motor.