JPH0115389B2 - - Google Patents
Info
- Publication number
- JPH0115389B2 JPH0115389B2 JP12574981A JP12574981A JPH0115389B2 JP H0115389 B2 JPH0115389 B2 JP H0115389B2 JP 12574981 A JP12574981 A JP 12574981A JP 12574981 A JP12574981 A JP 12574981A JP H0115389 B2 JPH0115389 B2 JP H0115389B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- crosslinking
- printing
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920000459 Nitrile rubber Polymers 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011256 inorganic filler Substances 0.000 claims description 4
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 2
- 239000003431 cross linking reagent Substances 0.000 description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000002174 Styrene-butadiene Substances 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- UJPKMTDFFUTLGM-UHFFFAOYSA-N 1-aminoethanol Chemical compound CC(N)O UJPKMTDFFUTLGM-UHFFFAOYSA-N 0.000 description 1
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920003261 Durez Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- -1 ethylhexyl Chemical group 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/02—Platens
Description
本発明は端末機等の印字用として使用されるプ
ラテンロールの改良に関する。
従来よりコンピユーター等における端末機には
印字方式として活字タイプのものが多く使用され
ていたが、近年ドツトタイプが普及し、又印字速
度が高速化してきたことに伴ない、端末機に使用
されているローラーも、活字タイプよりもドツト
タイプの方が印字時にローラーに対する衝撃が大
きいため、ローラーに凹現象が発生する頻度が多
くなつた。通常このプラテンロールは金属シヤフ
ト又はパイプ上に、ウレタンゴム（URと略称す
る）やスチレン・ブタジエンゴム（SBRと略称
する）あるいはアクリロニトリルゴム（NBRと
略称する）とハイスチレンSBRのブレンド物等
を主成分とする硬度90〜100の組成物が被覆され
ている。これらのゴムを被覆したロールで実機試
験を行うと、URは反撥弾性（リバウンド）が大
きく印字の遅れを生じ、又SBR、ハイスチレン
SBR／NBRは、凹現象が比較的早く発生すると
いう難点があつた。本発明は、これらの印字特
性、耐久性を充分に満足させるべく検討を行なつ
た結果、ベースポリマーとしてカルボキシル基含
有NBRを使用し、これに熱可塑性フエノール樹
脂等を配合した組成物でロールを構成すれば、上
記特性を満足するとともに、早期架橋の危険性が
なく加工作業の良好なプラテンロールが得られる
ことを見い出した。
本発明はこのような知見に基づいてなされたも
ので、プラテンロールにおける金属シヤフト又は
パイプの被覆層を、カルボキシル基含有ニトリル
ゴム100重量部に熱可塑性フエノール樹脂25〜40
重量部、無機質充填剤30〜60重量部、可塑剤を混
合し架橋させて成る硬度90以上の組成物で形成し
たことを特徴とする、耐印字性、耐久性の優れた
プラテンロールを提供するものである。
本発明に使用するカルボキシル基含有NBRに
は、例えばグツドリツチ社製ハイカー1072、日本
ゼオン社製ニツポール1072等がある。
又本発明に使用する熱可塑性フエノール樹脂
は、架橋剤を含有しないもので、例えば住友デユ
レズ社製スミライトレジン12686等がある。
本発明においては最終製品の硬度を90以上にす
るために、補強剤として炭酸カルシウム、タル
ク、クレーHAFカーボンブラツク等の無機質充
填剤を添加し、又加工性をあげるためジー（２―
エチルヘキシル）フタレート（DOPと略称する）
等の可塑剤を添加する。
又本発明に使用するNBRの架橋剤、架橋促進
剤としては硫黄、亜鉛華、テトラメチルチウラム
モノスルフイド等があげられ、フエノール樹脂の
架橋剤としてはアルデヒドアンモニア系のヘキサ
メチレンテトラミン等があげられる。
なお上述の成分の配合量は、NBR100重量部に
対して熱可塑性フエノール樹脂25〜40重量部、無
機質充填剤30〜60重量部、可塑剤10〜30重量部、
架橋剤５〜10重量部が適切であり、これらの値を
はずれると印字特性、耐久性が不充分になる。
本発明のローラーは、上述の成分を常法により
混練したあと、押出機を用いてチユーブ状に下作
りをしたものに金属シヤフト又はパイプを通して
金型にてプレス加硫することにより得られる。
次に実施例について説明する。
実施例
カルボキシル基含有NBR 100重量部
熱可塑性フエノール樹脂 35 〃
カーボンブラツク 40 〃
DOP 20 〃
架橋剤 ８ 〃
以上の成分をバンバリーミキサーを使用して混
練し、２mm厚のシートを作成して150℃20分間の
プレス架橋を行なつた。シートの特性は表の通り
であつた。又30mmφ×200mmのアルミニウム芯金
に上述の組成物を被覆し150℃、150Kg/cm2、50分
の架橋条件で肉厚15mmのローラーを製造し、実機
試験を行なつたところ凹発生までの印字数、及び
印字の鮮明度（表中、良は明瞭な印字、不良はぼ
やけた印字）は表に示す通りであつた。
比較例 １〜８
表に示す配合に従つて、実施例１と同様にして
シート及びローラーを製造し、同様に試験した。
The present invention relates to improvements in platen rolls used for printing in terminals and the like. Conventionally, type printing has been used in many terminals for computers, etc., but as dot type has become popular in recent years and printing speeds have become faster, it has started to be used in terminals. As for the roller, the impact on the roller during printing is greater in dot type than in type type, so dents occur more frequently in the roller. Usually, this platen roll is made of urethane rubber (abbreviated as UR), styrene-butadiene rubber (abbreviated as SBR), or a blend of acrylonitrile rubber (abbreviated as NBR) and high styrene SBR, etc., on a metal shaft or pipe. It is coated with a composition having a hardness of 90 to 100. When we conducted actual machine tests using rolls coated with these rubbers, we found that UR has a large rebound that causes printing delays, and SBR and high styrene
SBR/NBR had the disadvantage that the concavity phenomenon occurred relatively quickly. As a result of studies to fully satisfy these printing characteristics and durability, the present invention uses carboxyl group-containing NBR as a base polymer, and uses a composition containing thermoplastic phenolic resin, etc. to form a roll. It has been found that if configured, a platen roll that satisfies the above properties, is free from the risk of early crosslinking, and is easy to work with can be obtained. The present invention was made based on this knowledge, and the coating layer of the metal shaft or pipe in the platen roll is made by mixing 100 parts by weight of carboxyl group-containing nitrile rubber with 25 to 40 parts by weight of thermoplastic phenolic resin.
To provide a platen roll with excellent printing resistance and durability, characterized in that it is formed from a composition having a hardness of 90 or more, which is obtained by mixing and crosslinking 30 to 60 parts by weight of an inorganic filler and a plasticizer. It is something. Examples of the carboxyl group-containing NBR used in the present invention include Hiker 1072 manufactured by Gutdoritsu and Nitzpol 1072 manufactured by Nippon Zeon. The thermoplastic phenolic resin used in the present invention does not contain a crosslinking agent, such as Sumilite Resin 12686 manufactured by Sumitomo Durez. In the present invention, in order to make the hardness of the final product 90 or higher, inorganic fillers such as calcium carbonate, talc, and clay HAF carbon black are added as reinforcing agents, and in order to improve processability,
ethylhexyl) phthalate (abbreviated as DOP)
Add a plasticizer such as Examples of crosslinking agents and crosslinking accelerators for NBR used in the present invention include sulfur, zinc white, and tetramethylthiuram monosulfide, and examples of crosslinking agents for phenol resin include aldehyde ammonia-based hexamethylenetetramine. It will be done. The blending amounts of the above-mentioned components are 25 to 40 parts by weight of thermoplastic phenolic resin, 30 to 60 parts by weight of inorganic filler, 10 to 30 parts by weight of plasticizer, and 100 parts by weight of NBR.
A suitable amount of crosslinking agent is 5 to 10 parts by weight, and if it deviates from these values, printing characteristics and durability will become insufficient. The roller of the present invention is obtained by kneading the above-mentioned components in a conventional manner, and then passing the mixture through a metal shaft or pipe through a tube-shaped base using an extruder and press-curing it in a mold. Next, an example will be described. Example Carboxyl group-containing NBR 100 parts by weight Thermoplastic phenolic resin 35 〃 Carbon black 40 〃 DOP 20 〃 Crosslinking agent 8 〃 The above ingredients were kneaded using a Banbury mixer to make a 2 mm thick sheet and heated at 150℃20 Press crosslinking was carried out for 1 minute. The properties of the sheet were as shown in the table. In addition, a roller with a wall thickness of 15 mm was manufactured by coating a 30 mmφ x 200 mm aluminum core metal with the above composition under crosslinking conditions of 150°C, 150 Kg/cm 2 and 50 minutes, and an actual machine test was conducted. The number of prints and the clarity of the prints (in the table, good means clear prints and bad means blurry prints) are as shown in the table. Comparative Examples 1 to 8 Sheets and rollers were manufactured in the same manner as in Example 1 according to the formulations shown in the table, and tested in the same manner.
【表】【table】
【表】
以上の実施例から明らかなように本願発明のプ
ラテンローラーは凹に対する耐久性即ち、印字性
能も従来のものと比較して良好な評価が得られ
た。[Table] As is clear from the above examples, the platen roller of the present invention was evaluated favorably in terms of durability against concavities, that is, printing performance, compared to conventional rollers.
Claims (1)
イプの被覆層を、カルボキシル基含有ニトリルゴ
ム100重量部に熱可塑性フエノール樹脂25〜40重
量部、無機質充填剤30〜60重量部、可塑剤を混合
し架橋させて成る硬度90以上の組成物で形成した
ことを特徴とするプラテンロール。1 The coating layer of the metal shaft or pipe in the platen roll is made by mixing and crosslinking 100 parts by weight of carboxyl group-containing nitrile rubber, 25 to 40 parts by weight of thermoplastic phenolic resin, 30 to 60 parts by weight of inorganic filler, and a plasticizer. A platen roll characterized by being formed from a composition having a hardness of 90 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12574981A JPS5825979A (en) | 1981-08-11 | 1981-08-11 | Platen roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12574981A JPS5825979A (en) | 1981-08-11 | 1981-08-11 | Platen roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5825979A JPS5825979A (en) | 1983-02-16 |
| JPH0115389B2 true JPH0115389B2 (en) | 1989-03-16 |
Family
ID=14917849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12574981A Granted JPS5825979A (en) | 1981-08-11 | 1981-08-11 | Platen roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825979A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629538U (en) * | 1985-07-01 | 1987-01-21 | ||
| JPS6255448U (en) * | 1985-07-01 | 1987-04-06 | ||
| JPS62286771A (en) * | 1986-06-05 | 1987-12-12 | Canon Inc | Platen roller |
| JPS63114676A (en) * | 1986-10-31 | 1988-05-19 | Mitsubishi Electric Corp | Thermal printer |
-
1981
- 1981-08-11 JP JP12574981A patent/JPS5825979A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5825979A (en) | 1983-02-16 |
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